Running with all workarounds disabled, this change doesn't fix anything nor seem to make any difference, but anyway: Shouldn't the cache flush bits be in dword 0 for gen4 GEN4_PIPE_CONTROL? Maybe gen5 also?
diff --git a/src/sna/gen4_render.c b/src/sna/gen4_render.c index 1d164b6..894418b 100644 --- a/src/sna/gen4_render.c +++ b/src/sna/gen4_render.c @@ -575,8 +575,10 @@ inline static void gen4_emit_pipe_flush(struct sna *sna) { #if 1 - OUT_BATCH(GEN4_PIPE_CONTROL | (4 - 2)); - OUT_BATCH(GEN4_PIPE_CONTROL_WC_FLUSH); + OUT_BATCH(GEN4_PIPE_CONTROL | + GEN4_PIPE_CONTROL_WC_FLUSH | + (4 - 2)); + OUT_BATCH(0); OUT_BATCH(0); OUT_BATCH(0); #else @@ -601,8 +603,10 @@ inline static void gen4_emit_pipe_invalidate(struct sna *sna) { #if 0 - OUT_BATCH(GEN4_PIPE_CONTROL | (4 - 2)); - OUT_BATCH(GEN4_PIPE_CONTROL_WC_FLUSH | GEN4_PIPE_CONTROL_TC_FLUSH); + OUT_BATCH(GEN4_PIPE_CONTROL | + GEN4_PIPE_CONTROL_WC_FLUSH | GEN4_PIPE_CONTROL_TC_FLUSH | + (4 - 2)); + OUT_BATCH(0); OUT_BATCH(0); OUT_BATCH(0); #else -- 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: Fix Released 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