http://bugs.freedesktop.org/show_bug.cgi?id=22056
Summary: [regression UMS]compiz leads rendering slow due to
vblank
Product: Mesa
Version: unspecified
Platform: Other
OS/Version: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/DRI/i915
AssignedTo: dri-devel@lists.sourceforge.net
ReportedBy: haien....@intel.com
Created an attachment (id=26381)
--> (http://bugs.freedesktop.org/attachment.cgi?id=26381)
xorg.0.log
System Environment:
--------------------------
Host: x-aspire1
Arch: i386
Platform: 945GME
Libdrm: (master)dbffeadcfca7cb4e3905ec0b8573d10e0418295e
Mesa: (mesa_7_5_branch)1aef032d438aaa40ec28bf279ad5c089370773f0
Xserver: (server-1.6-branch)5cd5a01259ba349f1868ca4af04207cf120d69e4
Xf86_video_intel:
(master)704771f1c595df481d244a6f074e9f5620d4a720
Kernel: (for-linus)07f4f3e8a24138ca2f3650723d670df25687cd05
Bug detailed description:
--------------------------
startx with UMS,all renderings under compiz become very slow.and I think it is
caused by vlank, and only happens with LVDS(pipe 0?). it works well with VGA.
same issue happens on gm45.dmesg shows error like below:
[drm:i915_get_vblank_counter] *ERROR* trying to get vblank count for disabled
pipe 0
Reproduce Steps:
-----------------------
1.xinit&
2.gnome-session&
3. enable compiz(direct)
4.run any application
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