[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 #53 from Stanislav Lisovskiy <stanislav.lisovskiy at intel.com> ---
> If Gemini lake config ( pin ctrl )  is "on" everything works except screen.
> But on device with "b" screen everything works including screen.

You should have described this in the beginning.
The bug originally was:


"The screen after the grub is getting black ( backlight is still working ).  
System is booting normally - after that backlight screen is working .. and
black all the time.
I can control brightness by shortcuts.
If connect HDMI cable then on the new via HDMI the screen works perfect but on
the device screen is still black unfortunately .

I attached the kernel.



- edid from windows 10 

Monitor
  Model name............... WLY-10102FHD
  Windows description...... Generic PnP Monitor
  Manufacturer............. AUO
  Plug and Play ID......... AUO17D8
  Serial number............ n/a
  Manufacture date......... 2013, ISO week 11
  Filter driver............ None
  -------------------------
  EDID revision............ 1.4
  Input signal type........ Digital
  Color bit depth.......... 8 bits per primary color
  Color encoding formats... RGB 4:4:4, YCrCb 4:4:4
  Screen size.............. 140 x 220 mm (10,3 in)
  Power management......... Active off/sleep
  Extension blocs.......... None
  -------------------------
  DDC/CI................... n/a

Color characteristics
  Default color space...... sRGB
  Display gamma............ 3,55
  Red chromaticity......... Rx 0,625 - Ry 0,340
  Green chromaticity....... Gx 0,285 - Gy 0,605
  Blue chromaticity........ Bx 0,148 - By 0,063
  White point (default).... Wx 0,281 - Wy 0,309
  Additional descriptors... None



Thanks for any help."

And no mentioning about that. I'm really happy to help, however don't have
telepathy skills unfortunately :)

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