[Bug 43829] Resuming my AMD A4-3300 based laptop leaves the screen black

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=43829

--- Comment #13 from Helge Bahmann <hcb at chaoticmind.net> 2012-09-16 17:23:37 UTC ---
Created attachment 67252
  --> https://bugs.freedesktop.org/attachment.cgi?id=67252
t525-dmesg-patch-bug43829

(In reply to comment #12)
> Created attachment 67249 [details] [review]
> testing patch
> 
> If my 3.7 branch by itself doesn't work, does this patch on top of my 3.7
> branch help?  Please attach the output of dmesg after resume with this patch
> applied.

attached (the added DRM_INFO yields "bl_level: 0xff" )

as an additional experiment, I used "kexec" after suspending to reboot the same
kernel and let the radeon driver do a full reinitialization -- but even that
fails to bring the display back to life :(

Anything further I can do?

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