[Bug 108826] [GLK DSI] Black screen after grub - Ubuntu 18.04 - kernel latest tip 21.11.2018

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108826

--- Comment #88 from Miroslaw <mirek190 at gmail.com> ---
Hi

Sorry I answer so late but I was very busy lately.
I attach i915_vbt  ... but looks exactly identical.
So I also attach whole folders dri/0 for both panels.

That not working properly panel "a" works ok now with the path ... until I
sleep device...when I wake up device the screen is totally black not even
backlight works only restart device helps ... until I sleep device again...
I have the same result on panel "b" ( with that path but panel do not need it -
just for test )...  waking up device from sleep  - ... only black screen.


Without the path:
- panel "a" only works until kernel starts loading drm driver then is black but
backlight works.
- panel "b" - everything is ok.. no problems.

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