[Bug 54661] Backlight doesn't turn on after suspend on Acer 1830T with Ironlake chip running 3.8.1

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=54661





--- Comment #8 from Ilya Tumaykin <itumaykin at gmail.com>  2013-03-08 17:23:03 ---
(In reply to comment #7)
> Please attach dmesg with drm.debug=0xe module parameter from boot to suspend to
> resume and the issue.
> 
> Please attach output of intel_reg_dumper tool (from the intel-gpu-tools
> package) before suspend and after resume.

Here go the results with today's drm-intel-next kernel (drm-intel-testing
branch at commit d08a6eb2690b1ac6f0582feb41c2ccbea945285f).

There were three points where data was collected: first is after the normal
boot and login into X, second right after suspend/resume cycle when backlight
is not working yet and the last one right after the second only I hit
"brightness up" key to make backlight work again.

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