How to debug drm/kernel on system freeze

[Alex Deucher]

On Tue, May 3, 2011 at 8:41 AM, Frederik Vogelsang
<frederik.vogelsang at googlemail.com> wrote:
> Hi,
>
> I am experiencing constant freezes on my HP nx6125 laptop with a
> Radeon XPress 200M. I suspect it has something to do with the video
> driver because pure VESA seems to work.
>
> I'd like to debug the freezes a little bit further, but unfortunately
> I do not find any way to access logs/dumps. This is the situation:
>
> * system freezes randomly ( with KMS *and* UMS) when moving the mouse
> around/scrolling
> * screen turns white
> * no more SSH/network connections possible
> * keyboard dead
> * SYSRQ does not work any more after freezing
>
> Can anyone think of another way of retrieving log messages/dumps?

Have you tried a newer kernel, ddx, and mesa?

Alex