[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 #93 from Microtech <fabio.rifici at microtechsrl.com> ---
(In reply to Jani Nikula from comment #83)
> (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.

Hi Jani, I write for the first time because I would like to say thanks you to
you and your colleagues for the work you did until now. 
I ask you a little additional effort because the tablet still don't work
properly, since there is some pending issue. You have this device in your
hands, I think, so you can debug it easily because you can test everything. 
Please help us to close this ticket. Now we really need to close it because we
are stopped on this project from December and we can't go ahead.

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