GNU bug report logs - #28589
27.0.50; Emacs screen often becomes blank

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Katsumi Yamaoka <yamaoka <at> jpl.org>
Subject: bug#28589: closed (Re: bug#28589: 27.0.50; Emacs screen often
 becomes blank)
Date: Tue, 26 Sep 2017 18:32:02 +0000

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Your bug report

#28589: 27.0.50; Emacs screen often becomes blank

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 28589 <at> debbugs.gnu.org.

-- 
28589: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=28589
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Philipp Stephani <p.stephani2 <at> gmail.com>
To: Katsumi Yamaoka <yamaoka <at> jpl.org>, 28589-done <at> debbugs.gnu.org
Subject: Re: bug#28589: 27.0.50; Emacs screen often becomes blank
Date: Tue, 26 Sep 2017 18:31:37 +0000

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Katsumi Yamaoka <yamaoka <at> jpl.org> schrieb am Di., 26. Sep. 2017 um
06:44 Uhr:

> On Mon, 25 Sep 2017 10:01:30 +0900, Katsumi Yamaoka wrote:
> > Emacs screen often becomes blank or blinks.  This didn't happen
> > the last weekend, doesn't happen sometimes but often happens.
> > Changing the window configuration --- scrolling a window, showing
> > a message of two or more lines in the echo area, etc. --- seems
> > to cause it.  More funny thing is, when two Emacsen are running,
> > the one of which the frame is not selected becomes blank.
> > Typing any key in the selected blank frame will help, as if
> > (sit-for ∞) is running.
>
> Reverting the change c0af83b[1] solves this problem.
>
> [1]
> Don't attempt to disable double buffering in newer GTK+ versions
> <http://lists.gnu.org/archive/html/emacs-diffs/2017-09/msg00293.html>
>
>
Sigh, I had almost expected this would happen. Reverted with 2fa19cc551.
But now we have another time bomb in the codebase:
the gtk_widget_set_double_buffered function is deprecated and will probably
be removed sometime. This makes the migration to a pure GTK+ build even
more pressing.

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From: Katsumi Yamaoka <yamaoka <at> jpl.org>
To: bug-gnu-emacs <at> gnu.org
Subject: 27.0.50; Emacs screen often becomes blank
Date: Mon, 25 Sep 2017 10:01:30 +0900

Hi,

Emacs screen often becomes blank or blinks.  This didn't happen
the last weekend, doesn't happen sometimes but often happens.
Changing the window configuration --- scrolling a window, showing
a message of two or more lines in the echo area, etc. --- seems
to cause it.  More funny thing is, when two Emacsen are running,
the one of which the frame is not selected becomes blank.
Typing any key in the selected blank frame will help, as if
(sit-for ∞) is running.

Thanks.

In GNU Emacs 27.0.50 (build 1, i686-pc-cygwin, GTK+ Version 3.18.9)
 of 2017-09-25 built on localhost
Windowing system distributor 'The Cygwin/X Project', version 11.0.11900000

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