[Bug 90861] [SNB/BSW/SKL bisected] black screen on DP+eDP

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90861

--- Comment #32 from Andreas Reis <andreas.reis at gmail.com> ---
Created attachment 116425
  --> https://bugs.freedesktop.org/attachment.cgi?id=116425&action=edit
dmesg warnings

It's indeed the revert of the faulty "Read hw state" commit that causes the
livelock. If reapplied I can boot again, though with attached dmesg warnings
and the HDMI output now stays quiet entirely. Reapplying the other commit, both
separately or in addition, does not make the latter work again.

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