* bug#39341: Installer using 100% of a CPU core @ 2020-01-29 5:19 Maxim Cournoyer 2021-04-25 21:41 ` Ludovic Courtès 0 siblings, 1 reply; 19+ messages in thread From: Maxim Cournoyer @ 2020-01-29 5:19 UTC (permalink / raw) To: 39341 While using the Guix 1.0.1 installer, I noticed that it was constantly maxing one of the cores on the machine. The guilty process is: --8<---------------cut here---------------start------------->8--- USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 377 99.8 0.3 37268 10328 ? Rs 08:20 377:09 /gnu/store/8asv37pjsq3n4b4hgz9ys840f9j531hk-kmscon-0.0.0-1.01dd0a2/libexec/kmscon/kmscon --login --vt tty1 --no-switchvt --login -- /gnu/store/cb92798ps1xpla3ai14ik81vkl7jbw97-installer -p --8<---------------cut here---------------end--------------->8--- ^ permalink raw reply [flat|nested] 19+ messages in thread
* bug#39341: Installer using 100% of a CPU core 2020-01-29 5:19 bug#39341: Installer using 100% of a CPU core Maxim Cournoyer @ 2021-04-25 21:41 ` Ludovic Courtès 2021-04-26 14:32 ` pelzflorian (Florian Pelz) 0 siblings, 1 reply; 19+ messages in thread From: Ludovic Courtès @ 2021-04-25 21:41 UTC (permalink / raw) To: Maxim Cournoyer; +Cc: Mathieu Othacehe, 39341-done Hi! (Cc: Florian + Mathieu) Maxim Cournoyer <maxim.cournoyer@gmail.com> skribis: > While using the Guix 1.0.1 installer, I noticed that it was constantly > maxing one of the cores on the machine. > > The guilty process is: > > USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND > root 377 99.8 0.3 37268 10328 ? Rs 08:20 377:09 /gnu/store/8asv37pjsq3n4b4hgz9ys840f9j531hk-kmscon-0.0.0-1.01dd0a2/libexec/kmscon/kmscon --login --vt tty1 --no-switchvt --login -- /gnu/store/cb92798ps1xpla3ai14ik81vkl7jbw97-installer -p Good news! This is finally fixed: https://git.savannah.gnu.org/cgit/guix.git/commit/?id=d904abe0768293b2322dbf355b6e41d94e769d78 (Mathieu, Florian: let me know if anything looks fishy.) The commit log says it all. With this patch, a new FIFO is opened after each keymap-change request so kmscon no longer polls on a stale file descriptor. I’ve verified that keymap choices in the installer are honored, that you can change anytime via the F1 menu, and that there’s no file descriptor leak in the kmscon process. Now people will be less likely to hear the fan of their laptop right from the start of the installation process. :-) Ludo’. ^ permalink raw reply [flat|nested] 19+ messages in thread
* bug#39341: Installer using 100% of a CPU core 2021-04-25 21:41 ` Ludovic Courtès @ 2021-04-26 14:32 ` pelzflorian (Florian Pelz) 2021-04-26 16:07 ` Ludovic Courtès 0 siblings, 1 reply; 19+ messages in thread From: pelzflorian (Florian Pelz) @ 2021-04-26 14:32 UTC (permalink / raw) To: Ludovic Courtès; +Cc: Mathieu Othacehe, 39341-done, Maxim Cournoyer On Sun, Apr 25, 2021 at 11:41:59PM +0200, Ludovic Courtès wrote: 65;6003;1c> I’ve verified that keymap choices in the installer are honored, that you > can change anytime via the F1 menu, and that there’s no file descriptor > leak in the kmscon process. Keyboard layout selection completely broke for me, I will check again later if the mistake is on my part. Regards, Florian ^ permalink raw reply [flat|nested] 19+ messages in thread
* bug#39341: Installer using 100% of a CPU core 2021-04-26 14:32 ` pelzflorian (Florian Pelz) @ 2021-04-26 16:07 ` Ludovic Courtès 2021-04-26 16:14 ` pelzflorian (Florian Pelz) 0 siblings, 1 reply; 19+ messages in thread From: Ludovic Courtès @ 2021-04-26 16:07 UTC (permalink / raw) To: pelzflorian (Florian Pelz); +Cc: Mathieu Othacehe, 39341-done, Maxim Cournoyer Hi, "pelzflorian (Florian Pelz)" <pelzflorian@pelzflorian.de> skribis: > On Sun, Apr 25, 2021 at 11:41:59PM +0200, Ludovic Courtès wrote: > 65;6003;1c> I’ve verified that keymap choices in the installer are honored, that you >> can change anytime via the F1 menu, and that there’s no file descriptor >> leak in the kmscon process. > > Keyboard layout selection completely broke for me, I will check again > later if the mistake is on my part. How did you test? I made the initial choice in the early menu and later modified it by pressing F1 and “Change keyboard layout”. Ludo’. ^ permalink raw reply [flat|nested] 19+ messages in thread
* bug#39341: Installer using 100% of a CPU core 2021-04-26 16:07 ` Ludovic Courtès @ 2021-04-26 16:14 ` pelzflorian (Florian Pelz) 2021-04-27 10:38 ` Ludovic Courtès 0 siblings, 1 reply; 19+ messages in thread From: pelzflorian (Florian Pelz) @ 2021-04-26 16:14 UTC (permalink / raw) To: Ludovic Courtès; +Cc: Mathieu Othacehe, 39341-done, Maxim Cournoyer On Mon, Apr 26, 2021 at 06:07:33PM +0200, Ludovic Courtès wrote: > Hi, > > "pelzflorian (Florian Pelz)" <pelzflorian@pelzflorian.de> skribis: > > > On Sun, Apr 25, 2021 at 11:41:59PM +0200, Ludovic Courtès wrote: > > 65;6003;1c> I’ve verified that keymap choices in the installer are honored, that you > >> can change anytime via the F1 menu, and that there’s no file descriptor > >> leak in the kmscon process. > > > > Keyboard layout selection completely broke for me, I will check again > > later if the mistake is on my part. > > How did you test? > > I made the initial choice in the early menu and later modified it by > pressing F1 and “Change keyboard layout”. > > Ludo’. I selected the layout to be Amharic (or anything else, even QWERTZ Deutsch/German) both directly and via F1. Keyboard layout of the same image (guix git master, with updated guix package) works on QEMU and fails on real hardware where an old image worked. Regards, Florian ^ permalink raw reply [flat|nested] 19+ messages in thread
* bug#39341: Installer using 100% of a CPU core 2021-04-26 16:14 ` pelzflorian (Florian Pelz) @ 2021-04-27 10:38 ` Ludovic Courtès 2021-04-27 12:32 ` pelzflorian (Florian Pelz) 0 siblings, 1 reply; 19+ messages in thread From: Ludovic Courtès @ 2021-04-27 10:38 UTC (permalink / raw) To: pelzflorian (Florian Pelz); +Cc: Mathieu Othacehe, 39341-done, Maxim Cournoyer Hi, "pelzflorian (Florian Pelz)" <pelzflorian@pelzflorian.de> skribis: > On Mon, Apr 26, 2021 at 06:07:33PM +0200, Ludovic Courtès wrote: >> Hi, >> >> "pelzflorian (Florian Pelz)" <pelzflorian@pelzflorian.de> skribis: >> >> > On Sun, Apr 25, 2021 at 11:41:59PM +0200, Ludovic Courtès wrote: >> > 65;6003;1c> I’ve verified that keymap choices in the installer are honored, that you >> >> can change anytime via the F1 menu, and that there’s no file descriptor >> >> leak in the kmscon process. >> > >> > Keyboard layout selection completely broke for me, I will check again >> > later if the mistake is on my part. >> >> How did you test? >> >> I made the initial choice in the early menu and later modified it by >> pressing F1 and “Change keyboard layout”. >> >> Ludo’. > > I selected the layout to be Amharic (or anything else, even QWERTZ > Deutsch/German) both directly and via F1. Keyboard layout of the same > image (guix git master, with updated guix package) works on QEMU and > fails on real hardware where an old image worked. What do you mean by “fails on real hardware”? That the keyboard layout is unchanged? Is there anything in /var/log/messages or wherever kmscon writes its logs? Ludo’. ^ permalink raw reply [flat|nested] 19+ messages in thread
* bug#39341: Installer using 100% of a CPU core 2021-04-27 10:38 ` Ludovic Courtès @ 2021-04-27 12:32 ` pelzflorian (Florian Pelz) 2021-04-27 17:43 ` Bengt Richter 2021-04-27 21:26 ` Ludovic Courtès 0 siblings, 2 replies; 19+ messages in thread From: pelzflorian (Florian Pelz) @ 2021-04-27 12:32 UTC (permalink / raw) To: Ludovic Courtès; +Cc: Mathieu Othacehe, 39341-done, Maxim Cournoyer On Tue, Apr 27, 2021 at 12:38:23PM +0200, Ludovic Courtès wrote: > What do you mean by “fails on real hardware”? That the keyboard layout > is unchanged? Yes. > Is there anything in /var/log/messages No, nothing out of the ordinary, only the installer pages I went through. > or wherever kmscon > writes its logs? I try with diff --git a/gnu/services/base.scm b/gnu/services/base.scm index 24b3ea785b..0eff24828c 100644 --- a/gnu/services/base.scm +++ b/gnu/services/base.scm @@ -2330,6 +2330,7 @@ This service is not part of @var{%base-services}." (define kmscon-command #~(list + #$(file-append strace "/bin/strace") "-o" "/var/log/kmscon-out" "-f" #$(file-append kmscon "/bin/kmscon") "--login" "--vt" #$virtual-terminal "--no-switchvt" ;Prevent a switch to the virtual terminal. I do cat /var/log/kmscon-out | grep keymap-update I see 231 unlink("/tmp/kmscon-231-keymap-update") = -1 ENOENT (No such file or directory) 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 17 231 unlink("/tmp/kmscon-231-keymap-update") = 0 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 20 231 unlink("/tmp/kmscon-231-keymap-update") = 0 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 23 231 unlink("/tmp/kmscon-231-keymap-update") = 0 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 26 259 stat("/tmp/kmscon-231-keymap-update", {st_mode=S_IFIFO|0700, st_size=0, ...}) = 0 259 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 19 259 lstat("/tmp/kmscon-231-keymap-update", {st_mode=S_IFIFO|0700, st_size=0, ...}) = 0 231 unlink("/tmp/kmscon-231-keymap-update") = 0 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 26 231 unlink("/tmp/kmscon-231-keymap-update") = 0 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 18 231 unlink("/tmp/kmscon-231-keymap-update") = 0 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 21 231 unlink("/tmp/kmscon-231-keymap-update") = 0 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 24 Now I checked again; after going back to the installer via Ctrl-Alt-F1, I can actually type Amharic. Maybe it just took a long time? But it does not change back to English. I have more lines in kmscon-out by now 231 unlink("/tmp/kmscon-231-keymap-update") = -1 ENOENT (No such file or directory) 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 17 231 unlink("/tmp/kmscon-231-keymap-update") = 0 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 20 231 unlink("/tmp/kmscon-231-keymap-update") = 0 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 23 231 unlink("/tmp/kmscon-231-keymap-update") = 0 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 26 259 stat("/tmp/kmscon-231-keymap-update", {st_mode=S_IFIFO|0700, st_size=0, ...}) = 0 259 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 19 259 lstat("/tmp/kmscon-231-keymap-update", {st_mode=S_IFIFO|0700, st_size=0, ...}) = 0 231 unlink("/tmp/kmscon-231-keymap-update") = 0 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 26 231 unlink("/tmp/kmscon-231-keymap-update") = 0 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 18 231 unlink("/tmp/kmscon-231-keymap-update") = 0 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 21 231 unlink("/tmp/kmscon-231-keymap-update") = 0 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 24 259 stat("/tmp/kmscon-231-keymap-update", {st_mode=S_IFIFO|0700, st_size=0, ...}) = 0 259 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 19 259 lstat("/tmp/kmscon-231-keymap-update", {st_mode=S_IFIFO|0700, st_size=0, ...}) = 0 231 unlink("/tmp/kmscon-231-keymap-update") = 0 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 24 It has still not gone back to English layout (except when I press Alt+Shift). Regards, Florian ^ permalink raw reply related [flat|nested] 19+ messages in thread
* bug#39341: Installer using 100% of a CPU core 2021-04-27 12:32 ` pelzflorian (Florian Pelz) @ 2021-04-27 17:43 ` Bengt Richter 2021-04-27 19:58 ` pelzflorian (Florian Pelz) 2021-04-27 21:26 ` Ludovic Courtès 1 sibling, 1 reply; 19+ messages in thread From: Bengt Richter @ 2021-04-27 17:43 UTC (permalink / raw) To: pelzflorian (Florian Pelz); +Cc: Mathieu Othacehe, 39341-done, Maxim Cournoyer Hi Florian, On +2021-04-27 14:32:09 +0200, pelzflorian (Florian Pelz) wrote: > On Tue, Apr 27, 2021 at 12:38:23PM +0200, Ludovic Courtès wrote: > > What do you mean by “fails on real hardware”? That the keyboard layout > > is unchanged? > > Yes. > > > > Is there anything in /var/log/messages > > No, nothing out of the ordinary, only the installer pages I went > through. > > > or wherever kmscon > > writes its logs? > > I try with > > diff --git a/gnu/services/base.scm b/gnu/services/base.scm > index 24b3ea785b..0eff24828c 100644 > --- a/gnu/services/base.scm > +++ b/gnu/services/base.scm > @@ -2330,6 +2330,7 @@ This service is not part of @var{%base-services}." > > (define kmscon-command > #~(list > + #$(file-append strace "/bin/strace") "-o" "/var/log/kmscon-out" "-f" > #$(file-append kmscon "/bin/kmscon") "--login" > "--vt" #$virtual-terminal > "--no-switchvt" ;Prevent a switch to the virtual terminal. > > I do > > cat /var/log/kmscon-out | grep keymap-update > > I see > > 231 unlink("/tmp/kmscon-231-keymap-update") = -1 ENOENT (No such file or directory) > 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 > 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 17 > 231 unlink("/tmp/kmscon-231-keymap-update") = 0 > 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 > 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 20 > 231 unlink("/tmp/kmscon-231-keymap-update") = 0 > 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 > 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 23 > 231 unlink("/tmp/kmscon-231-keymap-update") = 0 > 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 > 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 26 > 259 stat("/tmp/kmscon-231-keymap-update", {st_mode=S_IFIFO|0700, st_size=0, ...}) = 0 > 259 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 19 > 259 lstat("/tmp/kmscon-231-keymap-update", {st_mode=S_IFIFO|0700, st_size=0, ...}) = 0 > 231 unlink("/tmp/kmscon-231-keymap-update") = 0 > 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 > 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 26 > 231 unlink("/tmp/kmscon-231-keymap-update") = 0 > 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 > 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 18 > 231 unlink("/tmp/kmscon-231-keymap-update") = 0 > 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 > 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 21 > 231 unlink("/tmp/kmscon-231-keymap-update") = 0 > 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 > 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 24 > > > Now I checked again; after going back to the installer via > Ctrl-Alt-F1, I can actually type Amharic. Maybe it just took a long > time? But it does not change back to English. > > I have more lines in kmscon-out by now > > 231 unlink("/tmp/kmscon-231-keymap-update") = -1 ENOENT (No such file or directory) > 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 > 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 17 > 231 unlink("/tmp/kmscon-231-keymap-update") = 0 > 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 > 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 20 > 231 unlink("/tmp/kmscon-231-keymap-update") = 0 > 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 > 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 23 > 231 unlink("/tmp/kmscon-231-keymap-update") = 0 > 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 > 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 26 > 259 stat("/tmp/kmscon-231-keymap-update", {st_mode=S_IFIFO|0700, st_size=0, ...}) = 0 > 259 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 19 > 259 lstat("/tmp/kmscon-231-keymap-update", {st_mode=S_IFIFO|0700, st_size=0, ...}) = 0 > 231 unlink("/tmp/kmscon-231-keymap-update") = 0 > 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 > 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 26 > 231 unlink("/tmp/kmscon-231-keymap-update") = 0 > 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 > 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 18 > 231 unlink("/tmp/kmscon-231-keymap-update") = 0 > 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 > 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 21 > 231 unlink("/tmp/kmscon-231-keymap-update") = 0 > 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 > 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 24 > 259 stat("/tmp/kmscon-231-keymap-update", {st_mode=S_IFIFO|0700, st_size=0, ...}) = 0 > 259 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_WRONLY|O_CREAT|O_TRUNC, 0666) = 19 > 259 lstat("/tmp/kmscon-231-keymap-update", {st_mode=S_IFIFO|0700, st_size=0, ...}) = 0 > 231 unlink("/tmp/kmscon-231-keymap-update") = 0 > 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 > 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 24 > > It has still not gone back to English layout (except when I press > Alt+Shift). > > Regards, > Florian > > > Perhaps this old bug in some form? https://bugzilla.gnome.org/show_bug.cgi?id=776570 and solution linked from there might help? http://unix.stackexchange.com/questions/333368 -- Regards, Bengt Richter ^ permalink raw reply [flat|nested] 19+ messages in thread
* bug#39341: Installer using 100% of a CPU core 2021-04-27 17:43 ` Bengt Richter @ 2021-04-27 19:58 ` pelzflorian (Florian Pelz) 0 siblings, 0 replies; 19+ messages in thread From: pelzflorian (Florian Pelz) @ 2021-04-27 19:58 UTC (permalink / raw) To: Bengt Richter; +Cc: Mathieu Othacehe, 39341-done, Maxim Cournoyer Hello Bengt, On Tue, Apr 27, 2021 at 07:43:56PM +0200, Bengt Richter wrote: > Perhaps this old bug in some form? > https://bugzilla.gnome.org/show_bug.cgi?id=776570 > and solution linked from there might help? > http://unix.stackexchange.com/questions/333368 No, I believe it is unrelated to the old bug <https://bugs.gnu.org/40493> when I changed kmscon, since - this affects the layout switch at the start of the installer or when pressing F1 (Alt+Shift is unrelated, I should not have mentioned it), - reverting Ludo’s fix d904abe0768 to the original bug makes layout selection work again (but causes the original bug 100% CPU usage) - German keyboard layout is affected too, even though it does not use Alt+Shift toggleing, and - apparently even with Ludo’s d904abe0768 the layout switch from the start of the installer can still be triggered somehow, since keyboard layout eventually switched to Amharic, but I don’t know how I triggered it last time. Regards, Florian ^ permalink raw reply [flat|nested] 19+ messages in thread
* bug#39341: Installer using 100% of a CPU core 2021-04-27 12:32 ` pelzflorian (Florian Pelz) 2021-04-27 17:43 ` Bengt Richter @ 2021-04-27 21:26 ` Ludovic Courtès 2021-04-28 7:02 ` pelzflorian (Florian Pelz) 1 sibling, 1 reply; 19+ messages in thread From: Ludovic Courtès @ 2021-04-27 21:26 UTC (permalink / raw) To: pelzflorian (Florian Pelz); +Cc: Mathieu Othacehe, 39341-done, Maxim Cournoyer Hi, "pelzflorian (Florian Pelz)" <pelzflorian@pelzflorian.de> skribis: > On Tue, Apr 27, 2021 at 12:38:23PM +0200, Ludovic Courtès wrote: >> What do you mean by “fails on real hardware”? That the keyboard layout >> is unchanged? > > Yes. > > >> Is there anything in /var/log/messages > > No, nothing out of the ordinary, only the installer pages I went > through. > >> or wherever kmscon >> writes its logs? > > I try with > > diff --git a/gnu/services/base.scm b/gnu/services/base.scm > index 24b3ea785b..0eff24828c 100644 > --- a/gnu/services/base.scm > +++ b/gnu/services/base.scm > @@ -2330,6 +2330,7 @@ This service is not part of @var{%base-services}." > > (define kmscon-command > #~(list > + #$(file-append strace "/bin/strace") "-o" "/var/log/kmscon-out" "-f" > #$(file-append kmscon "/bin/kmscon") "--login" > "--vt" #$virtual-terminal > "--no-switchvt" ;Prevent a switch to the virtual terminal. I tried this in ‘guix system vm gnu/system/install.scm’. I proceed like so: 1. after the installer’s welcome screen I choose French layout; 2. the next dialog is the host name, which is where I confirm I really got French layout; 3. from there I press F1, choose German layout, confirm by typing into the host name dialog that I got German layout; 4. I repeat step #3 with a variety of layouts. Changing layouts there just works and is instantaneous. (Note that this only changes the layout of kmscon, so tty3 & co. are unaffected.) The strace log shows this when changing layouts (FD 17 corresponds to /tmp/kmscon-165-keymap-update, the FIFO node): --8<---------------cut here---------------start------------->8--- 165 epoll_wait(3, [{EPOLLIN, {u32=17731792, u64=17731792}}, {EPOLLIN|EPOLLHUP, {u32=18285248, u64=18285248}}, {EPOLLIN, {u32=17639536, u64=17639536}}], 32, -1) = 3 165 epoll_wait(12, [{EPOLLIN, {u32=17678528, u64=17678528}}], 32, 0) = 1 165 read(20, "\33[5;22H\33[44m\33[K\33[6;22H\33[K\33[7;22H"..., 16384) = 1657 165 read(20, 0x10f6c28, 16384) = -1 EAGAIN (Resource temporarily unavailable) 165 read(17, "p", 1) = 1 165 read(17, "c", 1) = 1 165 read(17, "1", 1) = 1 165 read(17, "0", 1) = 1 165 read(17, "5", 1) = 1 165 read(17, "\0", 1) = 1 165 read(17, "f", 1) = 1 165 read(17, "r", 1) = 1 165 read(17, "\0", 1) = 1 165 read(17, "\0", 1) = 1 165 read(17, "\0", 1) = 1 165 read(17, "", 1) = 0 165 stat("/gnu/store/m734r6j7g74x9k74sgjb8835pg7dnqbk-libxkbcommon-1.0.3/etc/xkb", 0x7fff179314b0) = -1 ENOENT (No such file or directory) 165 stat("/gnu/store/qz3zdrz12rxawlkvah9qjhjyf6fh1v98-xkeyboard-config-2.31/share/X11/xkb", {st_mode=S_IFDIR|0555, st_size=4096, ...}) = 0 [...] 165 openat(AT_FDCWD, "/gnu/store/qz3zdrz12rxawlkvah9qjhjyf6fh1v98-xkeyboard-config-2.31/share/X11/xkb/symbols/inet", O_RDONLY) = 22 165 fstat(22, {st_mode=S_IFREG|0444, st_size=64040, ...}) = 0 165 mmap(NULL, 64040, PROT_READ, MAP_SHARED, 22, 0) = 0x7f50d23b5000 165 brk(0x12bb000) = 0x12bb000 165 munmap(0x7f50d23b5000, 64040) = 0 165 close(22) = 0 165 epoll_ctl(3, EPOLL_CTL_DEL, 17, NULL) = 0 165 close(17) = 0 165 getpid() = 165 165 unlink("/tmp/kmscon-165-keymap-update") = 0 165 mknod("/tmp/kmscon-165-keymap-update", S_IFIFO|0700) = 0 165 openat(AT_FDCWD, "/tmp/kmscon-165-keymap-update", O_RDONLY|O_NONBLOCK) = 17 165 epoll_ctl(3, EPOLL_CTL_ADD, 17, {EPOLLIN, {u32=19410896, u64=19410896}}) = 0 --8<---------------cut here---------------end--------------->8--- The last lines show that we delete the FIFO from the poll set, close the FIFO, recreate it, and re-add it to the poll set. So for me it works exactly as intended. Do you have a scenario I could follow to try to reproduce the problem? Thanks, Ludo’. ^ permalink raw reply [flat|nested] 19+ messages in thread
* bug#39341: Installer using 100% of a CPU core 2021-04-27 21:26 ` Ludovic Courtès @ 2021-04-28 7:02 ` pelzflorian (Florian Pelz) 2021-04-28 7:06 ` pelzflorian (Florian Pelz) ` (2 more replies) 0 siblings, 3 replies; 19+ messages in thread From: pelzflorian (Florian Pelz) @ 2021-04-28 7:02 UTC (permalink / raw) To: Ludovic Courtès; +Cc: Mathieu Othacehe, 39341-done, Maxim Cournoyer Hi Ludo, On Tue, Apr 27, 2021 at 11:26:41PM +0200, Ludovic Courtès wrote: > I tried this in ‘guix system vm gnu/system/install.scm’. I proceed like > so: > > 1. after the installer’s welcome screen I choose French layout; > 2. the next dialog is the host name, which is where I confirm I really > got French layout; At the host name dialog, I still have QWERTY layout, on both my Beebox and my Macbook. I can however switch in QEMU on the same Macbook. Oh and I just noticed now; the same USB drive does switch layouts on my fastest machine. All are UEFI. > 3. from there I press F1, choose German layout, confirm by typing into > the host name dialog that I got German layout; No effect, I still got QWERTY layout. > 4. I repeat step #3 with a variety of layouts. Same. > Changing layouts there just works and is instantaneous. (Note that this > only changes the layout of kmscon, so tty3 & co. are unaffected.) > > The strace log shows this when changing layouts (FD 17 corresponds to > /tmp/kmscon-165-keymap-update, the FIFO node): > > --8<---------------cut here---------------start------------->8--- > 165 epoll_wait(3, [{EPOLLIN, {u32=17731792, u64=17731792}}, {EPOLLIN|EPOLLHUP, {u32=18285248, u64=18285248}}, {EPOLLIN, {u32=17639536, u64=17639536}}], 32, -1) = 3 > 165 epoll_wait(12, [{EPOLLIN, {u32=17678528, u64=17678528}}], 32, 0) = 1 > 165 read(20, "\33[5;22H\33[44m\33[K\33[6;22H\33[K\33[7;22H"..., 16384) = 1657 > 165 read(20, 0x10f6c28, 16384) = -1 EAGAIN (Resource temporarily unavailable) > 165 read(17, "p", 1) = 1 > 165 read(17, "c", 1) = 1 > 165 read(17, "1", 1) = 1 > 165 read(17, "0", 1) = 1 > 165 read(17, "5", 1) = 1 > 165 read(17, "\0", 1) = 1 > 165 read(17, "f", 1) = 1 > 165 read(17, "r", 1) = 1 > 165 read(17, "\0", 1) = 1 > 165 read(17, "\0", 1) = 1 > 165 read(17, "\0", 1) = 1 > 165 read(17, "", 1) = 0 > 165 stat("/gnu/store/m734r6j7g74x9k74sgjb8835pg7dnqbk-libxkbcommon-1.0.3/etc/xkb", 0x7fff179314b0) = -1 ENOENT (No such file or directory) > 165 stat("/gnu/store/qz3zdrz12rxawlkvah9qjhjyf6fh1v98-xkeyboard-config-2.31/share/X11/xkb", {st_mode=S_IFDIR|0555, st_size=4096, ...}) = 0 Yes i do have this output too: 231 epoll_wait(3, [{EPOLLIN, {u32=8232720, u64=8232720}}, {EPOLLIN|EPOLLHUP, {u32=8124896, u64=8124896}}], 32, -1) = 2 231 epoll_wait(12, [{EPOLLIN, {u32=8182976, u64=8182976}}], 32, 0) = 1 231 read(29, "\33[5;67H\33[44m\33[K\33[6;67H\33[K\33[7;67H"..., 16384) = 1833 231 read(29, 0x7fc4f8, 16384) = -1 EAGAIN (Resource temporarily unavailable) 231 read(26, "p", 1) = 1 231 read(26, "c", 1) = 1 231 read(26, "1", 1) = 1 231 read(26, "0", 1) = 1 231 read(26, "5", 1) = 1 231 read(26, "\0", 1) = 1 231 read(26, "f", 1) = 1 231 read(26, "r", 1) = 1 231 read(26, "\0", 1) = 1 231 read(26, "\0", 1) = 1 231 read(26, "\0", 1) = 1 231 read(26, "", 1) = 0 231 stat("/gnu/store/m734r6j7g74x9k74sgjb8835pg7dnqbk-libxkbcommon-1.0.3/etc/xkb", 0x7fff282d66b0) = -1 ENOENT (No such file or directory) 231 stat("/gnu/store/qz3zdrz12rxawlkvah9qjhjyf6fh1v98-xkeyboard-config-2.31/share/X11/xkb", {st_mode=S_IFDIR|0555, st_size=2048, ...}) = 0 231 stat("/gnu/store/qz3zdrz12rxawlkvah9qjhjyf6fh1v98-xkeyboard-config-2.31/share/X11/xkb", {st_mode=S_IFDIR|0555, st_size=2048, ...}) = 0 > > [...] > > 165 openat(AT_FDCWD, "/gnu/store/qz3zdrz12rxawlkvah9qjhjyf6fh1v98-xkeyboard-config-2.31/share/X11/xkb/symbols/inet", O_RDONLY) = 22 > 165 fstat(22, {st_mode=S_IFREG|0444, st_size=64040, ...}) = 0 > 165 mmap(NULL, 64040, PROT_READ, MAP_SHARED, 22, 0) = 0x7f50d23b5000 > 165 brk(0x12bb000) = 0x12bb000 > 165 munmap(0x7f50d23b5000, 64040) = 0 > 165 close(22) = 0 > 165 epoll_ctl(3, EPOLL_CTL_DEL, 17, NULL) = 0 > 165 close(17) = 0 > 165 getpid() = 165 > 165 unlink("/tmp/kmscon-165-keymap-update") = 0 > 165 mknod("/tmp/kmscon-165-keymap-update", S_IFIFO|0700) = 0 > 165 openat(AT_FDCWD, "/tmp/kmscon-165-keymap-update", O_RDONLY|O_NONBLOCK) = 17 > 165 epoll_ctl(3, EPOLL_CTL_ADD, 17, {EPOLLIN, {u32=19410896, u64=19410896}}) = 0 > --8<---------------cut here---------------end--------------->8--- > > The last lines show that we delete the FIFO from the poll set, close the > FIFO, recreate it, and re-add it to the poll set. I got: 231 openat(AT_FDCWD, "/gnu/store/qz3zdrz12rxawlkvah9qjhjyf6fh1v98-xkeyboard-config-2.31/share/X11/xkb/symbols/inet", O_RDONLY) = 31 231 fstat(31, {st_mode=S_IFREG|0444, st_size=64040, ...}) = 0 231 mmap(NULL, 64040, PROT_READ, MAP_SHARED, 31, 0) = 0x7f1b1f5c7000 231 munmap(0x7f1b1f5c7000, 64040) = 0 231 close(31) = 0 231 epoll_ctl(3, EPOLL_CTL_DEL, 26, NULL) = 0 231 close(26) = 0 231 getpid() = 231 231 unlink("/tmp/kmscon-231-keymap-update") = 0 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 26 231 epoll_ctl(3, EPOLL_CTL_ADD, 26, {EPOLLIN, {u32=9609568, u64=9609568}}) = 0 231 epoll_wait(3, [{EPOLLIN, {u32=8123856, u64=8123856}}], 32, -1) = 1 231 read(14, "\2\0\0\0 \0\0\0000\373{\0\0\0\0\0\326\0\0\0^\335\t\0\347,\0\0]\0\0\0", 1024) = 32 231 ioctl(14, DRM_IOCTL_MODE_PAGE_FLIP, 0x7fff282d6b50) = 0 Slightly different. This is the next occurrence after the pci05\0fr. My layout is still QWERTY after waiting for some time; I do not know how the layout switch was eventually triggered after a while last time. > > So for me it works exactly as intended. > > Do you have a scenario I could follow to try to reproduce the problem? > > Thanks, > Ludo’. ^ permalink raw reply [flat|nested] 19+ messages in thread
* bug#39341: Installer using 100% of a CPU core 2021-04-28 7:02 ` pelzflorian (Florian Pelz) @ 2021-04-28 7:06 ` pelzflorian (Florian Pelz) 2021-04-28 13:43 ` Ludovic Courtès 2021-04-28 15:22 ` Ludovic Courtès 2 siblings, 0 replies; 19+ messages in thread From: pelzflorian (Florian Pelz) @ 2021-04-28 7:06 UTC (permalink / raw) To: Ludovic Courtès; +Cc: Mathieu Othacehe, 39341-done, Maxim Cournoyer On Wed, Apr 28, 2021 at 09:02:10AM +0200, pelzflorian (Florian Pelz) wrote: > On Tue, Apr 27, 2021 at 11:26:41PM +0200, Ludovic Courtès wrote: > > 165 openat(AT_FDCWD, "/gnu/store/qz3zdrz12rxawlkvah9qjhjyf6fh1v98-xkeyboard-config-2.31/share/X11/xkb/symbols/inet", O_RDONLY) = 22 > > 165 fstat(22, {st_mode=S_IFREG|0444, st_size=64040, ...}) = 0 > > 165 mmap(NULL, 64040, PROT_READ, MAP_SHARED, 22, 0) = 0x7f50d23b5000 > > 165 brk(0x12bb000) = 0x12bb000 > > 165 munmap(0x7f50d23b5000, 64040) = 0 > > 165 close(22) = 0 > > 165 epoll_ctl(3, EPOLL_CTL_DEL, 17, NULL) = 0 > > 165 close(17) = 0 > > 165 getpid() = 165 > > 165 unlink("/tmp/kmscon-165-keymap-update") = 0 > > 165 mknod("/tmp/kmscon-165-keymap-update", S_IFIFO|0700) = 0 > > 165 openat(AT_FDCWD, "/tmp/kmscon-165-keymap-update", O_RDONLY|O_NONBLOCK) = 17 > > 165 epoll_ctl(3, EPOLL_CTL_ADD, 17, {EPOLLIN, {u32=19410896, u64=19410896}}) = 0 > > --8<---------------cut here---------------end--------------->8--- > > > > The last lines show that we delete the FIFO from the poll set, close the > > FIFO, recreate it, and re-add it to the poll set. > > I got: > > 231 openat(AT_FDCWD, "/gnu/store/qz3zdrz12rxawlkvah9qjhjyf6fh1v98-xkeyboard-config-2.31/share/X11/xkb/symbols/inet", O_RDONLY) = 31 > 231 fstat(31, {st_mode=S_IFREG|0444, st_size=64040, ...}) = 0 > 231 mmap(NULL, 64040, PROT_READ, MAP_SHARED, 31, 0) = 0x7f1b1f5c7000 > 231 munmap(0x7f1b1f5c7000, 64040) = 0 > 231 close(31) = 0 > 231 epoll_ctl(3, EPOLL_CTL_DEL, 26, NULL) = 0 > 231 close(26) = 0 > 231 getpid() = 231 > 231 unlink("/tmp/kmscon-231-keymap-update") = 0 > 231 mknod("/tmp/kmscon-231-keymap-update", S_IFIFO|0700) = 0 > 231 openat(AT_FDCWD, "/tmp/kmscon-231-keymap-update", O_RDONLY|O_NONBLOCK) = 26 > 231 epoll_ctl(3, EPOLL_CTL_ADD, 26, {EPOLLIN, {u32=9609568, u64=9609568}}) = 0 > 231 epoll_wait(3, [{EPOLLIN, {u32=8123856, u64=8123856}}], 32, -1) = 1 > 231 read(14, "\2\0\0\0 \0\0\0000\373{\0\0\0\0\0\326\0\0\0^\335\t\0\347,\0\0]\0\0\0", 1024) = 32 > 231 ioctl(14, DRM_IOCTL_MODE_PAGE_FLIP, 0x7fff282d6b50) = 0 > > Slightly different. This is the next occurrence after the pci05\0fr. The brk does happen, just later, if it is important. Regards, Florian ^ permalink raw reply [flat|nested] 19+ messages in thread
* bug#39341: Installer using 100% of a CPU core 2021-04-28 7:02 ` pelzflorian (Florian Pelz) 2021-04-28 7:06 ` pelzflorian (Florian Pelz) @ 2021-04-28 13:43 ` Ludovic Courtès 2021-04-28 15:20 ` pelzflorian (Florian Pelz) 2021-04-29 9:33 ` Mathieu Othacehe 2021-04-28 15:22 ` Ludovic Courtès 2 siblings, 2 replies; 19+ messages in thread From: Ludovic Courtès @ 2021-04-28 13:43 UTC (permalink / raw) To: pelzflorian (Florian Pelz); +Cc: Mathieu Othacehe, 39341-done, Maxim Cournoyer Hi, "pelzflorian (Florian Pelz)" <pelzflorian@pelzflorian.de> skribis: > On Tue, Apr 27, 2021 at 11:26:41PM +0200, Ludovic Courtès wrote: >> I tried this in ‘guix system vm gnu/system/install.scm’. I proceed like >> so: >> >> 1. after the installer’s welcome screen I choose French layout; >> 2. the next dialog is the host name, which is where I confirm I really >> got French layout; > > At the host name dialog, I still have QWERTY layout, on both my Beebox > and my Macbook. I can however switch in QEMU on the same Macbook. Oh > and I just noticed now; the same USB drive does switch layouts on my > fastest machine. All are UEFI. > >> 3. from there I press F1, choose German layout, confirm by typing into >> the host name dialog that I got German layout; > > No effect, I still got QWERTY layout. > >> 4. I repeat step #3 with a variety of layouts. > > Same. [...] > My layout is still QWERTY after waiting for some time; I do not know > how the layout switch was eventually triggered after a while last time. Hmm I don’t know what to think. Could you confirm that keyboard switching works if you revert d904abe0768293b2322dbf355b6e41d94e769d78? To anyone reading this: could you please give it a try and report back? You can run the image in a VM from current master: ./pre-inst-env guix system vm gnu/system/install.scm or better yet, build the ISO, copy it to USB, and boot it on bare metal: ./pre-inst-env guix system image -t iso9660 gnu/system/install.scm Thanks, Ludo’. ^ permalink raw reply [flat|nested] 19+ messages in thread
* bug#39341: Installer using 100% of a CPU core 2021-04-28 13:43 ` Ludovic Courtès @ 2021-04-28 15:20 ` pelzflorian (Florian Pelz) 2021-04-29 9:33 ` Mathieu Othacehe 1 sibling, 0 replies; 19+ messages in thread From: pelzflorian (Florian Pelz) @ 2021-04-28 15:20 UTC (permalink / raw) To: Ludovic Courtès; +Cc: Mathieu Othacehe, 39341-done, Maxim Cournoyer On Wed, Apr 28, 2021 at 03:43:06PM +0200, Ludovic Courtès wrote: > Hmm I don’t know what to think. Could you confirm that keyboard > switching works if you revert d904abe0768293b2322dbf355b6e41d94e769d78? Yes, revert fixes it but goes back to 100% CPU usage. Note that layout switching works on QEMU for me and bare-metal only fails on some of my machines. Regards, Florian ^ permalink raw reply [flat|nested] 19+ messages in thread
* bug#39341: Installer using 100% of a CPU core 2021-04-28 13:43 ` Ludovic Courtès 2021-04-28 15:20 ` pelzflorian (Florian Pelz) @ 2021-04-29 9:33 ` Mathieu Othacehe 2021-04-29 9:59 ` Ludovic Courtès 2021-04-29 10:47 ` pelzflorian (Florian Pelz) 1 sibling, 2 replies; 19+ messages in thread From: Mathieu Othacehe @ 2021-04-29 9:33 UTC (permalink / raw) To: Ludovic Courtès; +Cc: 39341, 39341-done, Maxim Cournoyer [-- Attachment #1: Type: text/plain, Size: 487 bytes --] Hey Ludo, Your recent patch is just revealing an issue we always had with this Kmscon patch. Basically, without the "unlink" called you introduced, the FIFO fd was added only to the first discovered input and the keyboard layout was only applied to that very input. Conveniently, that input was always the main user keyboard I guess. The attached patch fixes that issue by registering the FIFO on the first input, but applying the keyboard layout to all the inputs. Thanks, Mathieu [-- Warning: decoded text below may be mangled, UTF-8 assumed --] [-- Attachment #2: 0001-gnu-kmscon-Fix-layout-setup.patch --] [-- Type: text/x-patch, Size: 3378 bytes --] From 1a0fddd844ced62c802db0d6d133af45880435f0 Mon Sep 17 00:00:00 2001 From: Mathieu Othacehe <othacehe@gnu.org> Date: Thu, 29 Apr 2021 11:11:32 +0200 Subject: [PATCH] gnu: kmscon: Fix layout setup. Kmscon may discover multiple inputs, corresponding to multiple devices. This means that the uxkb_dev_keymap_update function may be called multiple times, and the FIFO is registered on each input poll loop. When a new layout is written on the FIFO by the installer, the first input picking up the message, will apply the new layout. However, that input may not be the input that the user is currently using. To fix it, register the FIFO on the first input poll loop, but apply the new layout on all the inputs in the uxkb_keymap_update_handler function. * gnu/packages/patches/kmscon-runtime-keymap-switch.patch (uxkb_keymap_update_handler): Apply the new layout to all the inputs. (uxkb_dev_keymap_update): Register the FIFO fd only on the first input poll loop. --- .../kmscon-runtime-keymap-switch.patch | 29 ++++++++++++++----- 1 file changed, 22 insertions(+), 7 deletions(-) diff --git a/gnu/packages/patches/kmscon-runtime-keymap-switch.patch b/gnu/packages/patches/kmscon-runtime-keymap-switch.patch index 480aaecad2..abff9c460d 100644 --- a/gnu/packages/patches/kmscon-runtime-keymap-switch.patch +++ b/gnu/packages/patches/kmscon-runtime-keymap-switch.patch @@ -132,7 +132,7 @@ index 925c755..8fe08f8 100644 #include <xkbcommon/xkbcommon.h> #include "shl_hook.h" #include "shl_llog.h" -@@ -178,6 +181,95 @@ static void timer_event(struct ev_timer *timer, uint64_t num, void *data) +@@ -178,6 +181,110 @@ static void timer_event(struct ev_timer *timer, uint64_t num, void *data) shl_hook_call(dev->input->hook, dev->input, &dev->repeat_event); } @@ -171,7 +171,23 @@ index 925c755..8fe08f8 100644 + + llog_info(dev->input, "HANDLER CALLED %s|%s|%s\n", + model, layout, variant); -+ uxkb_desc_init(dev->input, model, layout, variant, options, NULL); ++ ++ struct uterm_input *input = dev->input; ++ struct shl_dlist *iter; ++ ++ /* Apply the new layout to all the inputs. */ ++ shl_dlist_for_each(iter, &input->devices) { ++ struct uterm_input_dev *dev; ++ dev = shl_dlist_entry(iter, ++ struct uterm_input_dev, ++ list); ++ uxkb_desc_init(dev->input, model, layout, variant, options, NULL); ++ dev->state = xkb_state_new(dev->input->keymap); ++ if (!dev->state) { ++ llog_error(dev->input, "cannot create XKB state"); ++ return; ++ } ++ } + + /* The client will now close the FIFO. Close it too, and re-create a + * FIFO so other clients can eventually connect. */ @@ -180,11 +196,6 @@ index 925c755..8fe08f8 100644 + dev->rupdate_fd = -1; + uxkb_dev_keymap_update(dev); + -+ dev->state = xkb_state_new(dev->input->keymap); -+ if (!dev->state) { -+ llog_error(dev->input, "cannot create XKB state"); -+ return; -+ } +} + +int uxkb_dev_keymap_update(struct uterm_input_dev *dev) @@ -193,6 +204,10 @@ index 925c755..8fe08f8 100644 + char *file; + int pid = getpid(); + ++ /* Add the FIFO fd only to the first input poll loop. */ ++ if (dev->rupdate_fd > 0) ++ return 0; ++ + ret = asprintf(&file, INPUT_KEYMAP_UPDATE_FILE, pid); + if (ret < 0) + return ret; -- 2.31.1 ^ permalink raw reply related [flat|nested] 19+ messages in thread
* bug#39341: Installer using 100% of a CPU core 2021-04-29 9:33 ` Mathieu Othacehe @ 2021-04-29 9:59 ` Ludovic Courtès 2021-04-29 10:13 ` Mathieu Othacehe 2021-04-29 10:47 ` pelzflorian (Florian Pelz) 1 sibling, 1 reply; 19+ messages in thread From: Ludovic Courtès @ 2021-04-29 9:59 UTC (permalink / raw) To: Mathieu Othacehe; +Cc: 39341, 39341-done, Maxim Cournoyer Hello! Mathieu Othacehe <othacehe@gnu.org> skribis: > Your recent patch is just revealing an issue we always had with this > Kmscon patch. Basically, without the "unlink" called you introduced, the > FIFO fd was added only to the first discovered input and the keyboard > layout was only applied to that very input. > > Conveniently, that input was always the main user keyboard I guess. The > attached patch fixes that issue by registering the FIFO on the first > input, but applying the keyboard layout to all the inputs. Oh, fun (indeed I tested on a laptop with an external USB keyboard). >>From 1a0fddd844ced62c802db0d6d133af45880435f0 Mon Sep 17 00:00:00 2001 > From: Mathieu Othacehe <othacehe@gnu.org> > Date: Thu, 29 Apr 2021 11:11:32 +0200 > Subject: [PATCH] gnu: kmscon: Fix layout setup. > > Kmscon may discover multiple inputs, corresponding to multiple devices. This > means that the uxkb_dev_keymap_update function may be called multiple times, > and the FIFO is registered on each input poll loop. > > When a new layout is written on the FIFO by the installer, the first input > picking up the message, will apply the new layout. However, that input may not > be the input that the user is currently using. > > To fix it, register the FIFO on the first input poll loop, but apply the new > layout on all the inputs in the uxkb_keymap_update_handler function. > > * gnu/packages/patches/kmscon-runtime-keymap-switch.patch > (uxkb_keymap_update_handler): Apply the new layout to all the inputs. > (uxkb_dev_keymap_update): Register the FIFO fd only on the first input poll loop. Tested in a VM: it switches layouts like crazy, doesn’t leak a single FD, and generally behaves as expected. Thumbs up! Thanks, Ludo’. ^ permalink raw reply [flat|nested] 19+ messages in thread
* bug#39341: Installer using 100% of a CPU core 2021-04-29 9:59 ` Ludovic Courtès @ 2021-04-29 10:13 ` Mathieu Othacehe 0 siblings, 0 replies; 19+ messages in thread From: Mathieu Othacehe @ 2021-04-29 10:13 UTC (permalink / raw) To: Ludovic Courtès; +Cc: 39341, 39341-done, Maxim Cournoyer > Tested in a VM: it switches layouts like crazy, doesn’t leak a single > FD, and generally behaves as expected. Thanks for testing :) I pushed a variant of this patch both on master and version-1.3.0 branches. Mathieu ^ permalink raw reply [flat|nested] 19+ messages in thread
* bug#39341: Installer using 100% of a CPU core 2021-04-29 9:33 ` Mathieu Othacehe 2021-04-29 9:59 ` Ludovic Courtès @ 2021-04-29 10:47 ` pelzflorian (Florian Pelz) 1 sibling, 0 replies; 19+ messages in thread From: pelzflorian (Florian Pelz) @ 2021-04-29 10:47 UTC (permalink / raw) To: Mathieu Othacehe; +Cc: 39341, 39341-done, Maxim Cournoyer On Thu, Apr 29, 2021 at 11:33:17AM +0200, Mathieu Othacehe wrote: > Conveniently, that input was always the main user keyboard I guess. The > attached patch fixes that issue […] Aha! Thank you. This patch fixed it on my Beebox PC. Note that my Beebox only ever had a single input device: a USB keyboard. Now I can also confirm how before your fix, Mathieu, I triggered the keyboard layout switch the one time it did actually switch: By unplugging and replugging my USB keyboard. Then it used the new layout. (When I use another computer, I take the keyboard to the new computer, that is why I did that.) Regards, Florian ^ permalink raw reply [flat|nested] 19+ messages in thread
* bug#39341: Installer using 100% of a CPU core 2021-04-28 7:02 ` pelzflorian (Florian Pelz) 2021-04-28 7:06 ` pelzflorian (Florian Pelz) 2021-04-28 13:43 ` Ludovic Courtès @ 2021-04-28 15:22 ` Ludovic Courtès 2 siblings, 0 replies; 19+ messages in thread From: Ludovic Courtès @ 2021-04-28 15:22 UTC (permalink / raw) To: pelzflorian (Florian Pelz); +Cc: Mathieu Othacehe, 39341-done, Maxim Cournoyer "pelzflorian (Florian Pelz)" <pelzflorian@pelzflorian.de> skribis: > My layout is still QWERTY after waiting for some time; I do not know > how the layout switch was eventually triggered after a while last time. I reproduced the bug on the bare metal. I noticed in /proc/PID/fd/ a couple of leaked /tmp/kmscon-PID-keymap-update file descriptors with “(deleted)” (17 and 20), but repeating F1 → “Change keyboard layout” doesn’t leak additional FDs. I don’t see which code path leads to this. To be continued… Ludo’. ^ permalink raw reply [flat|nested] 19+ messages in thread
end of thread, other threads:[~2021-04-29 10:48 UTC | newest] Thread overview: 19+ messages (download: mbox.gz follow: Atom feed -- links below jump to the message on this page -- 2020-01-29 5:19 bug#39341: Installer using 100% of a CPU core Maxim Cournoyer 2021-04-25 21:41 ` Ludovic Courtès 2021-04-26 14:32 ` pelzflorian (Florian Pelz) 2021-04-26 16:07 ` Ludovic Courtès 2021-04-26 16:14 ` pelzflorian (Florian Pelz) 2021-04-27 10:38 ` Ludovic Courtès 2021-04-27 12:32 ` pelzflorian (Florian Pelz) 2021-04-27 17:43 ` Bengt Richter 2021-04-27 19:58 ` pelzflorian (Florian Pelz) 2021-04-27 21:26 ` Ludovic Courtès 2021-04-28 7:02 ` pelzflorian (Florian Pelz) 2021-04-28 7:06 ` pelzflorian (Florian Pelz) 2021-04-28 13:43 ` Ludovic Courtès 2021-04-28 15:20 ` pelzflorian (Florian Pelz) 2021-04-29 9:33 ` Mathieu Othacehe 2021-04-29 9:59 ` Ludovic Courtès 2021-04-29 10:13 ` Mathieu Othacehe 2021-04-29 10:47 ` pelzflorian (Florian Pelz) 2021-04-28 15:22 ` Ludovic Courtès
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