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 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1703068 Title: Badly broken rendering of text views To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/gtk+3.0/+bug/1703068/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs