[Bug 100221] New: [SKL] Resume from suspend to disk fails

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100221

            Bug ID: 100221
           Summary: [SKL] Resume from suspend to disk fails
           Product: DRI
           Version: XOrg git
          Hardware: x86-64 (AMD64)
                OS: Linux (All)
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: le.trmr at gmail.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org

Created attachment 130240
  --> https://bugs.freedesktop.org/attachment.cgi?id=130240&action=edit
System info

Description: I have bisected Kernel 4.9.9 and determined the following to be
the cause:

commit f2a0409a08502d64fbe3990354dff5902b08d2fb
Author: Chris Wilson <chris at chris-wilson.co.uk>
Date:   Wed Sep 21 14:51:08 2016 +0100

    drm/i915/execlists: Reset RING registers upon resume

    commit bafb2f7d4755bf1571bd5e9a03b97f3fc4fe69ae upstream.

Kernel 4.10 does show the same behaviour.

Please also see the bisect history on github [1] and this forum thread [2].
[1] https://github.com/kxv/linux49.9
[2]
https://forum.manjaro.org/t/linux-4-9-9-breaks-hibernation-4-9-8-works/17499


Expected behaviour: Resuming from suspend to disk normally by displaying lock
screen.

Actual behaviour: System powers on but resumes to a black screen.

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