I'm also affected by this character corruption bug. My hardware is a notebook with Intel 4500M (i915 driver). First I thought it's caused by a hardware issue with my external screen, but the notebook screen shows the currupted characters as well. Sometimes when I scroll down to the end of a website with text and then keep scrolling (when the end is reached), about 2 characters per sentence are corrupted and about every 1/10 second the position of the curruptions change. The characters that were corrupted before look fine then and different characters are corrupted.
What I have tried so far: - Disable/enable xcompmgr (no effect) - Use XFCE (no effect) - Change driver options i915_enable_rc6, i915_enable_fbc, lvds_downclock (no effect) - Use different fonts (no effect) - Disable sna (works) - Test firefox, libreoffice, chromium (all affected) Version Info: Kernel 3.10.1-1-ARCH xf86-video-intel 2.21.12 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xserver-xorg-video-intel in Ubuntu. https://bugs.launchpad.net/bugs/1098334 Title: [gen4 sna] Font corruption in Chromium tab bar Status in X.org xf86-video-intel: In Progress Status in “xserver-xorg-video-intel” package in Ubuntu: Triaged Bug description: After enabling the SNA acceleration method and rebooting, I noticed that graphical glitches appeared in the letters on Chromium's tab bar during the mouse hover animation. I've attached a screenshot illustrating this, particularly with the letter "g" in the screenshot. ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: xorg 1:7.7+1ubuntu4 ProcVersionSignature: Ubuntu 3.7.0-7.15-generic 3.7.0 Uname: Linux 3.7.0-7-generic x86_64 ApportVersion: 2.8-0ubuntu1 Architecture: amd64 Date: Thu Jan 10 16:00:55 2013 InstallationDate: Installed on 2012-09-24 (107 days ago) InstallationMedia: Kubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120822.2) MarkForUpload: True SourcePackage: xorg UpgradeStatus: Upgraded to raring on 2012-09-25 (107 days ago) To manage notifications about this bug go to: https://bugs.launchpad.net/xserver-xorg-video-intel/+bug/1098334/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp