[Bug 2147309] Re: [X1E] Display panel failure MEDION 14 S1 Elite

[James Addison]

Thanks ~juergh - yep, please find attached the dmesg output from booting
the same ISO on the device (I didn't realise that I could mount and
write to USB storage from the shell - that was much easier than taking
screenshots and transcribing them!).

** Attachment added: "dmesg.txt"
   https://bugs.launchpad.net/ubuntu-concept/+bug/2147309/+attachment/5959624/+files/dmesg.txt

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https://bugs.launchpad.net/bugs/2147309

Title:
  [X1E] Display panel failure MEDION 14 S1 Elite

Status in ubuntu-concept:
  New

Bug description:
  Hello,

  I have downloaded a recent Ubuntu Concept (resolute, 20260326) ISO and
  am attempting to boot my MEDION 14 S1 Elite from that image.

  By removing the 'quiet splash' kernel commandline arguments, I can see
  that it seems to make good progress starting the system (as I've
  mentioned in #2137257).

  However, after the boot sequence has begun multiple systemd services
  successfully, and attempts to switch to a graphical environment, the
  display turns blank and the laptop reboots.

  I've been able to access a bash shell on the laptop and to run dmesg
  to gather kernel output messages.  In particular there is one
  stacktrace related to probing the display driver that I think may be
  relevant.  I am attaching the (manually transcribed; beware typos)
  stacktrace and some of the preceding and subsequent dmesg log output
  with this bugreport.

  The error is reproducible; I can replicate it and the output seems
  similar aside from small details like the kthread and CPU ID.  Please
  let me know if I can provide more information to help track down the
  problem.

  Thanks,
  James

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