[Bug 102224] New: Screen does not wake after screen blank is triggered after some time

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=102224

            Bug ID: 102224
           Summary: Screen does not wake after screen blank is triggered
                    after some time
           Product: DRI
           Version: unspecified
          Hardware: x86-64 (AMD64)
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/Intel
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: dopey at moonteeth.com
        QA Contact: intel-gfx-bugs at lists.freedesktop.org
                CC: intel-gfx-bugs at lists.freedesktop.org
     i915 platform: KBL
     i915 features: power/runtime PM

On my Dell XPS 13 9360 with i7-7560U and Iris graphics when the screen sleeps,
after a certain amount of the time the screen will not wake (and keyboard input
is locked and unresponsive).  Remote input still works.

enable_rc6=0 works around the issue.  When the issue occurs the following is
always logged in kernel logs:

May 26 11:12:01 hostname kernel: [drm:i915_gem_idle_work_handler [i915]]
*ERROR* Timeout waiting for engines to idle

The issue started occurring with the 4.10.x kernel with Fedora 25 and continues
to occur through 4.12.x kernels in Fedora 26.

There's a relatively long bug report at:
https://bugzilla.redhat.com/show_bug.cgi?id=1440988 for the issue.

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