Something worth experimenting with is detuning the GPU, e.g.:
diff --git a/src/sna/gen4_render.c b/src/sna/gen4_render.c index e239c21..bc6af68 100644 --- a/src/sna/gen4_render.c +++ b/src/sna/gen4_render.c @@ -52,7 +52,7 @@ */ #define FORCE_SPANS 0 #define FORCE_NONRECTILINEAR_SPANS -1 -#define FORCE_FLUSH 1 /* https://bugs.freedesktop.org/show_bug.cgi?id=55500 */ +#define FORCE_FLUSH 0 /* https://bugs.freedesktop.org/show_bug.cgi?id=55500 */ #define NO_COMPOSITE 0 #define NO_COMPOSITE_SPANS 0 @@ -74,7 +74,7 @@ #define URB_CS_ENTRIES 0 #define URB_VS_ENTRY_SIZE 1 -#define URB_VS_ENTRIES 32 +#define URB_VS_ENTRIES 16 #define URB_GS_ENTRY_SIZE 0 #define URB_GS_ENTRIES 0 @@ -83,7 +83,7 @@ #define URB_CL_ENTRIES 0 #define URB_SF_ENTRY_SIZE 2 -#define URB_SF_ENTRIES 64 +#define URB_SF_ENTRIES 1 /* * this program computes dA/dx and dA/dy for the texture coordinates along @@ -93,9 +93,9 @@ #define SF_KERNEL_NUM_GRF 16 #define PS_KERNEL_NUM_GRF 32 -#define GEN4_MAX_SF_THREADS 24 -#define GEN4_MAX_WM_THREADS 32 -#define G4X_MAX_WM_THREADS 50 +#define GEN4_MAX_SF_THREADS 8 +#define GEN4_MAX_WM_THREADS 16 +#define G4X_MAX_WM_THREADS 16 static const uint32_t ps_kernel_packed_static[][4] = { #include "exa_wm_xy.g4b" -- 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: Incomplete 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
