[Bug 102224] [KBL/SKL] Screen does not wake after screen blank

[bugzilla-daemon at freedesktop.org]

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

--- Comment #9 from Gordon Messmer <gordon.messmer at gmail.com> ---
I ran 4.11.11-300.fc26.x86_64 with "drm.debug=0x1e log_bug_len=2M" for a few
weeks and was not able to reproduce the problem.

Yesterday I removed those options, and today I got the blank-screen hang and
"*ERROR* Timeout waiting for engines to idle" error message.

Seems the failure might not manifest while debugging is enabled.

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