bug#39341: Installer using 100% of a CPU core

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From: "pelzflorian (Florian Pelz)" <pelzflorian@pelzflorian.de>
To: "Ludovic Courtès" <ludo@gnu.org>
Cc: Mathieu Othacehe <othacehe@gnu.org>,
	39341-done@debbugs.gnu.org,
	Maxim Cournoyer <maxim.cournoyer@gmail.com>
Subject: bug#39341: Installer using 100% of a CPU core
Date: Tue, 27 Apr 2021 14:32:09 +0200	[thread overview]
Message-ID: <20210427123209.jyqw77edsbt5qhdj@pelzflorian.localdomain> (raw)
In-Reply-To: <878s546mhs.fsf@gnu.org>

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

next prev parent reply	other threads:[~2021-04-27 12:36 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
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) [this message]
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

find likely ancestor, descendant, or conflicting patches for this message:
( dfblob:24b3ea785 dfblob:0eff24828 )
 OR (
bs:"bug#39341: Installer using 100% of a CPU core" )
	(help)

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