[Bug 371662] Re: Slow/no 3d acceleration on Intel cards after upgrade to 9.04

[Martin Olsson]

Tiling is not being enabled properly. In your xorg.log there is:
(EE) intel(0): Failed to set tiling on front buffer: rejected by kernel
(EE) intel(0): Failed to set tiling on back buffer: rejected by kernel
(EE) intel(0): Failed to set tiling on depth buffer: rejected by kernel

I think there has been some fixes for tiling upstream but I don't
remember the details. I'd suggest that you try out mainline kernel
2.6.30-rc4 or later and see if that fixes your issue:
https://wiki.ubuntu.com/KernelMainlineBuilds

Anyway, intel has some known perf issues right now in jaunty. The
primary bug tracking this situation is bug 252094, you'll likely see
people mentioning a lot of different issues there but tiling is one of
them.

https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-
intel/+bug/252094

-- 
Slow/no 3d acceleration on Intel cards after upgrade to 9.04
https://bugs.launchpad.net/bugs/371662
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.

-- 
ubuntu-bugs mailing list
ubuntu-bugs at lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs