[Bug 37679] [RS690M] No 3d acceleration in Radeon X1200 with the new Gallium r300 / 3d drivers

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=37679

--- Comment #60 from André Oliva <gandreoliva at gmail.com> 2011-09-23 07:45:08 PDT ---
(In reply to comment #59)
> (In reply to comment #58)
> > I don't think that is the Bios. I have 3 OS on 3 partitions: Windows XP,
> > Ubuntu 10.04 LTS and Ubuntu 11.04. 3d acc works well on Windows and Ubuntu
> > 10.04. It doesn't work in Ubuntu 11.04.
> 
> As I mentioned previously, it depends if 10.04 used KMS or UMS.  UMS did not
> make as extensive use of interrupts as KMS does.  If 10.04 used KMS, then
> please bisect the kernel to see what commit caused the problem.

Based on here
https://help.ubuntu.com/community/RadeonDriver and the release notes of Lucid,
I guess that 10.04 used KMS, not UMS.

I have 10.04 still installed in my laptop. Is there a way to check if KMS is
been used?

And if so, I'm completely unfamiliar with bisecting the kernel. Could you
please give me more instructions about what does it mean and how to do it?

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