|Summary:||xf86-video-intel 2.21.14-1 slows down gnome-shell with SNA accelleration|
|Product:||xorg||Reporter:||Volker Holthaus <v.holthaus>|
|Component:||Driver/intel||Assignee:||Chris Wilson <chris>|
|Status:||RESOLVED DUPLICATE||QA Contact:||Intel GFX Bugs mailing list <intel-gfx-bugs>|
|i915 platform:||i915 features:|
Description Volker Holthaus 2013-08-06 11:03:30 UTC
Hardware: NVidia GT555M Software: Arch Linux Kernel 3.10.3-1-ARCH bumblebee 3.2.1-3 nvidia driver 319.32 xf86-video-intel 2.21.14-1 If i change the accelleration from UXA to SNA the gnome-shell slows dramatically down. No error in the Xorg.0.log or dmesg log. With the UXA accelleration everything works fine.
Comment 1 Volker Holthaus 2013-08-06 11:06:14 UTC
Comment 2 Chris Wilson 2013-08-06 12:01:32 UTC
The obvious candidate is commit 3f04b6f33f05f8a24698f934a23462269b84917d Author: Chris Wilson <firstname.lastname@example.org> Date: Thu Aug 1 14:49:36 2013 +0100 sna/dri: Disable TripleBuffering by default for compositors which is more or less at the request of the gnome-shell authors.
Comment 3 Chris Wilson 2013-08-06 12:03:19 UTC
(Except you didn't actually say this was a regression. And haven't even attached the Xorg log or stated the exact nature of the slowdown).
Comment 5 Volker Holthaus 2013-08-06 13:42:46 UTC
The regression was the slow animation of the windows, when you change to the activity screen and choose workplace with another application. The applications behavior is normal.