[Bug 98517] Skylake gen6 suspend/resume video regression 4.9

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=98517

--- Comment #21 from Pablo Cholaky <waltercool at slash.cl> ---
Created attachment 131523
  --> https://bugs.freedesktop.org/attachment.cgi?id=131523&action=edit
DMESG drm with 0x1e, suspend, wake, open terminal, xrandr, screen turns on

Attaching a new log enabling the screen only with xrandr instead restarting
drm.

The following error always appears on Xorg.0.log at start time, not sure if
related.

[  8859.247] (EE) 
[  8859.247] (EE) Backtrace:
[  8859.248] (EE) 0: /usr/bin/X (xorg_backtrace+0x4e) [0x58cf3e]
[  8859.248] (EE) 1: /usr/lib64/xorg/modules/drivers/intel_drv.so
(0x7f93f8f16000+0x1733ad) [0x7f93f90893ad]
[  8859.248] (EE) 2: /usr/bin/X (0x400000+0x111f61) [0x511f61]
[  8859.248] (EE) 3: /usr/bin/X (0x400000+0x1139af) [0x5139af]
[  8859.248] (EE) 4: /usr/bin/X (0x400000+0x35f4b) [0x435f4b]
[  8859.248] (EE) 5: /usr/bin/X (0x400000+0x3a088) [0x43a088]
[  8859.248] (EE) 6: /lib64/libc.so.6 (__libc_start_main+0xf0) [0x7f93fd4ad2c0]
[  8859.248] (EE) 7: /usr/bin/X (_start+0x2a) [0x423faa]
[  8859.248] (EE) 
[  8859.248] sna_present_queue_vblank:477 assertion 'msc - swap->msc <
1ull<<31' failed

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