Public bug reported:
Applications utilizing gtk3 text views display terrible rendering
artifacts on my system. A portion of the canvas immediately below the
drawn text view gets redrawn (or perhaps more accurately *not* redrawn),
and then text gets drawn over the top. Subsequent updates to the text
view will just draw on top of the existing text.
This is visible in (among other things) gtk3-demo (from gtk-3-examples),
gnome-calculator, EiskaltDC++ Gtk3. A screenshot comparing gtk3-demo and
gtk-demo (via gtk2.0-examples) is attached.
It's a distinct possibility that the real issue is in the video driver
or compiz or something, but this was my best guess for a starting point,
since I've isolated the issue to [seemingly] gtk3 text views (and
possibly also transparency overlay? the top right and bottom left of
Overlay -> Decorative Overlay exhibits the problem, along with
Transparency also in the Overlay section of gtk3-demo).
Kernel: 4.10.0-26-generic
xorg-server 2:1.19.3-1ubuntu1
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Ivybridge Desktop
OpenGL version string: 3.0 Mesa 17.0.3
Although I haven't tried a fresh install, I have confirmed the behavior
persists in a guest session. The issue had briefly gone away a month or
two ago, but I didn't have time to closely track what changed
(presumably: what updates were installed?).
ProblemType: Bug
DistroRelease: Ubuntu 17.04
Package: libgtk-3-0 3.22.11-0ubuntu3
ProcVersionSignature: Ubuntu 4.10.0-26.30-generic 4.10.17
Uname: Linux 4.10.0-26-generic x86_64
ApportVersion: 2.20.4-0ubuntu4.1
Architecture: amd64
CurrentDesktop: Unity:Unity7
Date: Fri Jul 7 23:07:37 2017
InstallationDate: Installed on 2014-11-29 (951 days ago)
InstallationMedia: Ubuntu 14.10 "Utopic Unicorn" - Release amd64 (20141022.1)
SourcePackage: gtk+3.0
UpgradeStatus: Upgraded to zesty on 2017-04-14 (85 days ago)
** Affects: gtk+3.0 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug zesty
** Attachment added: "gtk3-demo vs gtk-demo: Text View -> Markup"
https://bugs.launchpad.net/bugs/1703068/+attachment/4911135/+files/Screenshot%20from%202017-07-07%2023-05-04.png
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https://bugs.launchpad.net/bugs/1703068
Title:
Badly broken rendering of text views
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