[Bug 111690] Monitor does not wake from sleep with Haswell/DisplayPort

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111690

--- Comment #2 from Mark <tokamark at mail.com> ---
Created attachment 145384
  --> https://bugs.freedesktop.org/attachment.cgi?id=145384&action=edit
dmesg output

Steps to produce this log:
1. Reboot
2. startx
3. systemctl suspend
4. wait for monitor to sleep
5. pressed key on keyboard to wake computer (monitor stays asleep)
6. switch to VT1 (monitor wakes up)
7. capture dmesg output

Sometimes switching to VT1 does not wake the monitor. In that case switching
back to the terminal running X will wake the monitor, but crashes X.

This problem is always reproducible.

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