[LAU] suspend not working with 2.6.22-14-rt

[Matthias Schönborn]

Am Samstag 01 März 2008 11:36:24 schrieb Atte André Jensen:
> Hi
>
> I'm running ubuntu with 2.6.22-14-rt. Suspend is not working (it never
> goes into suspend, and doesn't react when I open the lid). Suspend works
> fine with the non-rt stock ubuntu kernel.
>
> Any ideas? How can I approach such a problem, I mean which files can I
> look in after reboot that'll tell me something about what went wrong?

I've got the same issue, and in my case it's because the proprietary ati 
drivers won't install on the rt-kernel. I'm not able to fix this.