[Bug 67454] After suspend/resume, screen is black for all but the highest levels with i915 driver on MacBook Air 6,2

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=67454

--- Comment #106 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to Yuan Chao from comment #105)
> Created attachment 126443 [details] [review]
> proposed patch to store extra registers
> 
> Here is a proposed patch based on comment 14 of [Bug 97486].

Sorry, that won't do.

Please report the output of 'lspci -nns 2' and try
http://patchwork.freedesktop.org/patch/msgid/1473329920-4449-1-git-send-email-shawn.c.lee@intel.com

--- Comment #107 from Yuan Chao <yuanchao at gmail.com> ---
The output of MBA 6,2 (2013) is 

00:02.0 VGA compatible controller [0300]: Intel Corporation Haswell-ULT
Integrated Graphics Controller [8086:0a26] (rev 09)

Just tested the patch by shawn.c.lee on kernel 4.8.0 RC3, it actually works.

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