From: Eli Zaretskii <eliz@gnu.org>
To: Bastian Beischer <bastian.beischer@gmail.com>
Cc: 38199@debbugs.gnu.org
Subject: bug#38199: 27.0.50; [Cairo] Display artifacts (small vertical colored bars)
Date: Thu, 14 Nov 2019 15:30:31 +0200 [thread overview]
Message-ID: <83tv7660w8.fsf@gnu.org> (raw)
In-Reply-To: <87eeybd12v.fsf@bastian-desktop.i-did-not-set--mail-host-address--so-tickle-me> (message from Bastian Beischer on Wed, 13 Nov 2019 20:32:24 +0100)
> From: Bastian Beischer <bastian.beischer@gmail.com>
> Date: Wed, 13 Nov 2019 20:32:24 +0100
>
> When emacs is built with cairo I see small display artifacts from time
> to time, in particular there are small thin vertical bars, for example,
> with the default theme (starting from emacs -Q) I get those bars in the
> mode-line and they are always in a cyan color, but it is possible that
> other occurences can be observed even with emacs -Q.
>
> In real world usage I have seen these bars in regular buffers, too,
> usually they are red and/or blue but that might depend on my theme.
>
> A recipe to produce them (on my machine) is:
>
> 1) emacs -Q
> 2) M-<
> 3) C-space
> 4) M->
> 5) M-w
> 6) C-y (repeat ten or twenty times)
>
> Then move around in the resulting buffer and after a bit of cursor
> movement the vertical lines appear. They are not permanent and often
> disappear when the buffer is refreshed.
Did you try to disable "advanced" or "optimization" features of your
display driver software? Or upgrade it to a newer version? The
artifacts your screenshot shows don't look like something Emacs could
produce.
Can someone else reproduce this in a Cairo build?
Thanks.
next prev parent reply other threads:[~2019-11-14 13:30 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-13 19:32 bug#38199: 27.0.50; [Cairo] Display artifacts (small vertical colored bars) Bastian Beischer
2019-11-14 13:30 ` Eli Zaretskii [this message]
2019-11-14 15:33 ` Dmitry Gutov
2019-11-14 22:30 ` Bastian Beischer
2019-11-15 7:59 ` Eli Zaretskii
2019-11-23 13:03 ` Bastian Beischer
2020-08-25 23:22 ` Stefan Kangas
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