Well I'm curious how this explains this - I've taken current git - changed the value to '44' - and I'm typing this text. I could see a lot of errors during text typing - but these errors seems to be somehow limited only to certain regions of shown text.
It's not destroyed everywhere - only in some particularly piece and in particular time - it's kind of weird defect to observe - and it also happen for only some specific use-case i.e. my text edit 'fte' which is using X drawing code has absolutely no issue - all characters are always correct. But in firefox - typing this BZ I could see a lot of changing letters (usually everything after 10 letter on the line is weirdly changing - like if the font cache would be not working correctly. Typing on keyboard shows rending bugs - as soon as right mouse button is hit - everything is instantly redrawn correctly and pop window is shown. Another thing I notice is - I've about 20 lines of email headers in thunderbird. And exactly only the 4th line is showing problems with letters - even when I just move the mouse over the TB window - this text is being continuously modified - but everything else in that window is without any problem. So if you say - there is hw bug - how is that - it could very easily render everything correctly ? Why only certain portions of text have distortions - why it's not randomly spread over the whole screen (which I'd have expected for time collisions)? -- 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 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