* bug#28652: 26.0.60; Display often "flashes" due to double buffering when switching to Emacs frames
@ 2017-09-29 18:44 N. Jackson
2017-09-30 8:32 ` martin rudalics
2021-09-03 7:57 ` Lars Ingebrigtsen
0 siblings, 2 replies; 7+ messages in thread
From: N. Jackson @ 2017-09-29 18:44 UTC (permalink / raw)
To: 28652
When switching between windows in Gnome using Alt-Tab there is
often a bright flash just after switching to an Emacs frame.
It seems as if the Emacs frame is displayed and then a window of
some other application appears for a fraction of a second before
the display settles down to the showing the Emacs frame.
Because the flash is so quick, I Initially thought the Emacs frame
was being displayed in white before being painted to it's correct
display, but this is not the case. By choosing distinctive colours
or distinctive images in my other applications, I can tell that it
is the window of another application that is flashing up.
[This flashing might be particularly noticeable on this system as
I use a dark theme in Emacs (Wheatgrass) and most other
application windows are predominantly white. Also I keep all my
Emacs frames and all my other application windows maximised or
full screen (because I have a small display).]
This flashing does not happen in Emacs 24 or 25. It happens in
Emacs 26 and I think I also saw it when I built master back in
March [1].
However, it does not happen in Emacs 26 if I put
(add-to-list 'default-frame-alist '(inhibit-double-buffering . t))
in my init file and restart Emacs.
[1] https://debbugs.gnu.org/cgi/bugreport.cgi?bug=25851#170
In GNU Emacs 26.0.60 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.17)
of 2017-09-24 built on moondust.localdomain
Repository revision: d93301242f38d3d9aaa55899c07496f0bdecf391
Windowing system distributor 'Fedora Project', version 11.0.11903000
System Description: Fedora release 25 (Twenty Five)
Configured using:
'configure --without-pop 'CFLAGS=-O2 -g3 -gdwarf-4''
Configured features:
XPM JPEG TIFF GIF PNG RSVG IMAGEMAGICK SOUND DBUS GSETTINGS NOTIFY ACL
LIBSELINUX GNUTLS LIBXML2 FREETYPE LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS
GTK3 X11 LCMS2
Important settings:
value of $LANG: en_CA.UTF-8
value of $XMODIFIERS: @im=none
locale-coding-system: utf-8-unix
Major mode: Text
Minor modes in effect:
diff-auto-refine-mode: t
flyspell-mode: t
pdf-occur-global-minor-mode: t
shell-dirtrack-mode: t
recentf-mode: t
display-battery-mode: t
display-time-mode: t
show-paren-mode: t
savehist-mode: t
save-place-mode: t
electric-pair-mode: t
desktop-save-mode: t
delete-selection-mode: t
cua-mode: t
tooltip-mode: t
global-eldoc-mode: t
electric-indent-mode: t
mouse-wheel-mode: t
file-name-shadow-mode: t
global-font-lock-mode: t
font-lock-mode: t
blink-cursor-mode: t
auto-composition-mode: t
auto-encryption-mode: t
auto-compression-mode: t
temp-buffer-resize-mode: t
size-indication-mode: t
column-number-mode: t
line-number-mode: t
global-visual-line-mode: t
visual-line-mode: t
transient-mark-mode: t
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Features:
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score-mode nnvirtual gnus-msg nntp gnus-cache cl-extra help-mode vc-git
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semantic semantic/tag semantic/lex semantic/fw mode-local cedet
pdf-isearch let-alist pdf-misc imenu pdf-tools compile cus-edit pdf-view
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ob-comint comint ansi-color ring ob-core ob-eval org-compat org-macs
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timezone bbdb-loaddefs finder-inf tex-site info package epg-config
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frameset cl-loaddefs cl-lib delsel cua-base cus-start cus-load time-date
mule-util tooltip eldoc electric uniquify ediff-hook vc-hooks
lisp-float-type mwheel term/x-win x-win term/common-win x-dnd tool-bar
dnd fontset image regexp-opt fringe tabulated-list replace newcomment
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syntax facemenu font-core term/tty-colors frame cl-generic cham georgian
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ethiopic indian cyrillic chinese composite charscript charprop
case-table epa-hook jka-cmpr-hook help simple abbrev obarray minibuffer
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custom widget hashtable-print-readable backquote dbusbind inotify lcms2
dynamic-setting system-font-setting font-render-setting move-toolbar gtk
x-toolkit x multi-tty make-network-process emacs)
Memory information:
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(symbols 48 103149 168)
(miscs 40 14262 10745)
(strings 32 162301 27047)
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^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#28652: 26.0.60; Display often "flashes" due to double buffering when switching to Emacs frames
2017-09-29 18:44 bug#28652: 26.0.60; Display often "flashes" due to double buffering when switching to Emacs frames N. Jackson
@ 2017-09-30 8:32 ` martin rudalics
2017-09-30 19:07 ` N. Jackson
2021-09-03 7:57 ` Lars Ingebrigtsen
1 sibling, 1 reply; 7+ messages in thread
From: martin rudalics @ 2017-09-30 8:32 UTC (permalink / raw)
To: N. Jackson, 28652
> In GNU Emacs 26.0.60 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.17)
> of 2017-09-24 built on moondust.localdomain
If this happened for a build of master in between commits
c0af83b6ccf2dab9a515dd7f52eb9d4500275ae3
and
2fa19cc5510cdbf00c54991a9959be984dd99fbe
it would imply that inhibiting double buffering is also needed even if
it did not cause problems like those from bug#28589. But apparently you
built from the release branch. So I'm slightly confused.
martin
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#28652: 26.0.60; Display often "flashes" due to double buffering when switching to Emacs frames
2017-09-30 8:32 ` martin rudalics
@ 2017-09-30 19:07 ` N. Jackson
2017-10-01 8:24 ` martin rudalics
0 siblings, 1 reply; 7+ messages in thread
From: N. Jackson @ 2017-09-30 19:07 UTC (permalink / raw)
To: martin rudalics; +Cc: 28652
At 10:32 +0200 on Saturday 2017-09-30, martin rudalics wrote:
>
>> In GNU Emacs 26.0.60 (build 1, x86_64-pc-linux-gnu, GTK+ Version 3.22.17)
>> of 2017-09-24 built on moondust.localdomain
>
> If this happened for a build of master in between commits
>
> c0af83b6ccf2dab9a515dd7f52eb9d4500275ae3
>
> and
>
> 2fa19cc5510cdbf00c54991a9959be984dd99fbe
>
> it would imply that inhibiting double buffering is also needed
> even if it did not cause problems like those from bug#28589. But
> apparently you built from the release branch. So I'm slightly
> confused.
>
> martin
Hi Martin,
Sorry, I don't know if I can help with your confusion.
Yes, I built from the release branch (emacs-26) on 2017-09-24 at
commit d93301242f38d3d9aaa55899c07496f0bdecf391.
The commits you mention were made 2017-08-27 and 2017-09-26
respectively, but neither of them seem to be in the emacs-26
branch.
I am not familiar with bug#28589.
N.
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#28652: 26.0.60; Display often "flashes" due to double buffering when switching to Emacs frames
2017-09-30 19:07 ` N. Jackson
@ 2017-10-01 8:24 ` martin rudalics
0 siblings, 0 replies; 7+ messages in thread
From: martin rudalics @ 2017-10-01 8:24 UTC (permalink / raw)
To: N. Jackson; +Cc: 28652
> Yes, I built from the release branch (emacs-26) on 2017-09-24 at
> commit d93301242f38d3d9aaa55899c07496f0bdecf391.
>
> The commits you mention were made 2017-08-27 and 2017-09-26
> respectively, but neither of them seem to be in the emacs-26
> branch.
Then this was pure coincidence and you're facing a more general issue
with double buffering.
martin
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#28652: 26.0.60; Display often "flashes" due to double buffering when switching to Emacs frames
2017-09-29 18:44 bug#28652: 26.0.60; Display often "flashes" due to double buffering when switching to Emacs frames N. Jackson
2017-09-30 8:32 ` martin rudalics
@ 2021-09-03 7:57 ` Lars Ingebrigtsen
2021-09-03 11:52 ` N. Jackson
1 sibling, 1 reply; 7+ messages in thread
From: Lars Ingebrigtsen @ 2021-09-03 7:57 UTC (permalink / raw)
To: N. Jackson; +Cc: 28652
nljlistbox2@gmail.com (N. Jackson) writes:
> When switching between windows in Gnome using Alt-Tab there is
> often a bright flash just after switching to an Emacs frame.
>
> It seems as if the Emacs frame is displayed and then a window of
> some other application appears for a fraction of a second before
> the display settles down to the showing the Emacs frame.
>
> Because the flash is so quick, I Initially thought the Emacs frame
> was being displayed in white before being painted to it's correct
> display, but this is not the case. By choosing distinctive colours
> or distinctive images in my other applications, I can tell that it
> is the window of another application that is flashing up.
>
> [This flashing might be particularly noticeable on this system as
> I use a dark theme in Emacs (Wheatgrass) and most other
> application windows are predominantly white. Also I keep all my
> Emacs frames and all my other application windows maximised or
> full screen (because I have a small display).]
(I'm going through old bug reports that unfortunately weren't resolved
at the time.)
I'm also using Gnome (I'm on Debian bullseye), but I can't see these
flashes (I've tried in Emacs 26.1 and Emacs 28) when Alt-Tab-ing between
something that has a bright background and Emacs (which has a black
background).
Are you still seeing this in recent Emacs/Gnome versions?
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#28652: 26.0.60; Display often "flashes" due to double buffering when switching to Emacs frames
2021-09-03 7:57 ` Lars Ingebrigtsen
@ 2021-09-03 11:52 ` N. Jackson
2021-09-03 12:07 ` Lars Ingebrigtsen
0 siblings, 1 reply; 7+ messages in thread
From: N. Jackson @ 2021-09-03 11:52 UTC (permalink / raw)
To: Lars Ingebrigtsen; +Cc: 28652
Hello Lars,
At 09:57 +0200 on Friday 2021-09-03, Lars Ingebrigtsen wrote:
>
> nljlistbox2@gmail.com (N. Jackson) writes:
>
>> When switching between windows in Gnome using Alt-Tab there is
>> often a bright flash just after switching to an Emacs frame.
>>
>> It seems as if the Emacs frame is displayed and then a window of
>> some other application appears for a fraction of a second before
>> the display settles down to the showing the Emacs frame.
>>
>> Because the flash is so quick, I Initially thought the Emacs frame
>> was being displayed in white before being painted to it's correct
>> display, but this is not the case. By choosing distinctive colours
>> or distinctive images in my other applications, I can tell that it
>> is the window of another application that is flashing up.
>>
>> [This flashing might be particularly noticeable on this system as
>> I use a dark theme in Emacs (Wheatgrass) and most other
>> application windows are predominantly white. Also I keep all my
>> Emacs frames and all my other application windows maximised or
>> full screen (because I have a small display).]
>
> (I'm going through old bug reports that unfortunately weren't resolved
> at the time.)
>
> I'm also using Gnome (I'm on Debian bullseye), but I can't see these
> flashes (I've tried in Emacs 26.1 and Emacs 28) when Alt-Tab-ing between
> something that has a bright background and Emacs (which has a black
> background).
>
> Are you still seeing this in recent Emacs/Gnome versions?
No, I haven't seen this problem -- at all -- in quite a few Emacs
versions.
(Sorry I didn't update the bug report with that information -- I had
completely forgotten about the bug.)
[The only time I see any "flashing" of any sort in Emacs now is
while it starts up and restores my desktop frames and windows. My
understanding is that this is expected. (It is also much less
frenetic that it was in the past.)]
Thank you and best regards,
Neil.
^ permalink raw reply [flat|nested] 7+ messages in thread
* bug#28652: 26.0.60; Display often "flashes" due to double buffering when switching to Emacs frames
2021-09-03 11:52 ` N. Jackson
@ 2021-09-03 12:07 ` Lars Ingebrigtsen
0 siblings, 0 replies; 7+ messages in thread
From: Lars Ingebrigtsen @ 2021-09-03 12:07 UTC (permalink / raw)
To: N. Jackson; +Cc: 28652
"N. Jackson" <nljlistbox2@gmail.com> writes:
> No, I haven't seen this problem -- at all -- in quite a few Emacs
> versions.
>
> (Sorry I didn't update the bug report with that information -- I had
> completely forgotten about the bug.)
No problem. :-) I'm closing this bug report, then.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2021-09-03 12:07 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-09-29 18:44 bug#28652: 26.0.60; Display often "flashes" due to double buffering when switching to Emacs frames N. Jackson
2017-09-30 8:32 ` martin rudalics
2017-09-30 19:07 ` N. Jackson
2017-10-01 8:24 ` martin rudalics
2021-09-03 7:57 ` Lars Ingebrigtsen
2021-09-03 11:52 ` N. Jackson
2021-09-03 12:07 ` Lars Ingebrigtsen
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