For me #define MAX_FLUSH_VERTICES 1 fixes the issue. #define MAX_FLUSH_VERTICES 2 is also stable so far. Values starting from 3 result in artifacts.
However, as I wrote in post #150, reverting this: diff --git a/src/sna/sna_glyphs.c b/src/sna/sna_glyphs.c index 62415c8..43086a0 100644 --- a/src/sna/sna_glyphs.c +++ b/src/sna/sna_glyphs.c @@ -1130,8 +1130,7 @@ next_image: - if (this_atlas->format == (format->depth << 24 | format->format) && - (sna->kgem.gen >> 3) != 4) { /* XXX cache corruption? how? */ + if (this_atlas->format == (format->depth << 24 | format->format)) { Solves the problem at all - even setting #define MAX_FLUSH_VERTICES 128 works correct, as well as #define FORCE_FLUSH 0 is also fine. -- 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