Bug#572880: video-radeon: frequent lockups on suspend to disk/resume with KMS

[Nix]

On 7 Mar 2010, Hramrach verbalised:

> I have upgraded the system to get KMS working and now the system would
> lockup about once in three tries when doing suspend to disk/resume.
>
> I suspect this is related to KMS but I had to upgrade quite a bit of
> stuff to get it working so I cannot be sure.

Bug <https://bugs.freedesktop.org/show_bug.cgi?id=26872> is a bisection
of a 100%-reproducible (for me) lockup in KMS suspension in 2.6.33. It
may be related. (Then again it may not: your lockup is not consistently
reproducible. I'm not sure how we can get useful debugging info out at
freeze time. Will even a netconsole work?)