https://bugs.freedesktop.org/show_bug.cgi?id=38488
--- Comment #4 from Harald Judt h.judt@gmx.at 2011-06-23 02:36:33 PDT ---
The funny voltage value isn't a real value it's a flag for the driver. This patch should fix up that issue:
[...]
I had this patch already applied, but this seems to fix a different issue not related to resuming.
I reproduced the problem on git vanilla kernel now (bccaeafd7c117acee36e90d37c7e05c19be9e7bf) using in-kernel suspend. I didn't check whether this has your patch already applied, but I don't think it would change anything here.
So there are two things to conclude: * The strange voltage reading and the power_profile malfunction are both caused by doing hibernate/resume. * The self-modified tuxonice patch is not the culprit, as the symptoms are the same with in-kernel suspend.
Therefore, something is not right with the cayman power management code.
Would it help if I provide drm.debug information? Any special parameters required for drm.debug?