Comment 44 for bug 535640

(In reply to comment #20)
> Put another way; is the patch in
> http://kernel.ubuntu.com/git?p=ubuntu/ubuntu-lucid.git;a=commit;h=0d2907f4bead56cff60f91068b3a3efa7149e702
> still required in current (i.e. 2.6.35-rc) kernels?

The Ubuntu 10.10 development version has been without this patch since late May, and we haven't got the storms of bug reports for this issue like we did for 10.04, but then again that started only later in the release cycle when more people started testing. The patch was apparently removed after one person confirmed that the patch was no longer needed for him [1].

We have had one recent bug report with Maverick with the same type of batchbuffer hanging in MI_WAIT_FOR_EVENT after two MI_LOAD_SCAN_LINES_INCL [2,3], but the circumstances seems to be different (watching video) and Chris Wilson has committed a DDX patch [4] which may solve this but it has not been tested yet.

I have asked for verification at the downstream bug report and I will report back here and clear the NEEDINFO flag when/if I get some feedback.

[1]: https://lists.ubuntu.com/archives/kernel-team/2010-May/010602.html
[2]: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-video-intel/+bug/603064
[3]: http://bugs.freedesktop.org/show_bug.cgi?id=28964
[4]: video: apply the crtc box checks from dri. (http://cgit.freedesktop.org/xorg/driver/xf86-video-intel/commit/?id=272d1c14a39c32ade39b5a8b080a891f2b3d6e8e)