[Bug 349992] Re: [i945 tiling] (Needs kernel 2.6.30-rc3) Low performance due to no A17 workaround

Ike Panhc ike.pan at canonical.com
Fri May 15 08:46:24 UTC 2009


I try to cherry-pick the bit 17 swizzling patch, it looks like a proper
solution for this issue, but lots of conflict when I merge to current
Jaunty tree, I check for the upstream and find out that I need to pull
lots of commit to solve the conflict. It is against the policy of SRU.

Fortunately we have the disable-gem patch which will force intel driver
in the traditional mode and have some improvement with the benchmark.

I merge the patch and build the kernel image. I put those packages at
http://people.ubuntu.com/~ikepanhc/lp349992/

If anyone suffers with this issue, could you have a test with the http://people.ubuntu.com/~ikepanhc/lp349992/linux-image-2.6.28-13-ikepanhc-lp349992_1_i386.deb, and add the following line to "/etc/modprobe.d/options"
options i915 enable_gem=0

Please let me know if it works fine or not.

-- 
[i945 tiling] (Needs kernel 2.6.30-rc3) Low performance due to no A17 workaround
https://bugs.launchpad.net/bugs/349992
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