[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 #83 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to Miroslaw from comment #74)
> Here you go 
> 
> kernel_5.0-rc4-pathed--screen_a
> https://pastebin.com/0qg18CMi
> 
> kernel_5.0-rc4-no-pathed--screen_a
> https://pastebin.com/EvCUPsBa
> 
> kernel_5.0-rc4-pathed_screen_b
> https://pastebin.com/CCzLsPX1
> 
> kernel_5.0-rc4-not-pathed-screen_b
> https://pastebin.com/Y2jAV6UV
> 
> 
> I remind :
> The same device with 2 different screens
> 
> Ssreen a - had a problem  after kms with a "blank screen" .. path solved it
> Screen b - is ok no problems at all
> 
> If you need more data just ask .

Miroslaw, please attach /sys/kernel/debug/dri/0/i915_vbt for each device type,
with display a and with display b.

The VBT contains display sequences to run at specific stages of display
control, including changing GPIO states. This probably conflicts with pin
control.

For future reference, please *attach* all logs and binaries etc. instead of
using pastebin. The pastebins will go away eventually.

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