[Bug 108773] i915.fastboot=1 is broken on Thinkpad S1 Yoga (Haswell)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108773

--- Comment #7 from Johannes Krampf <johannes.krampf at gmail.com> ---
Created attachment 142648
  --> https://bugs.freedesktop.org/attachment.cgi?id=142648&action=edit
Dmesg from drm-tip 20181128 with fastboot on T440s

I built drm-tip at 5912c54d9804fb15d6a9fa2798bfef1e837c8938 (Nov 27 18:38:00
2018 -0800) with default config + EFISTUB, booted and there was no output on
the screen.

When I forced the monitor into sleep mode (xset dpms force off) and woke the
screen up by moving the mouse I had normal output again.

It seems the LUT update patch does not solve the issue for me.

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