[Bug 2147309] [NEW] Display panel failure MEDION 14 S1 Elite

[James Addison]

Public bug reported:

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

** Affects: ubuntu-concept
     Importance: Undecided
         Status: New

** Attachment added: "medion-s1-elite-panel-stacktrace.txt"
   https://bugs.launchpad.net/bugs/2147309/+attachment/5958861/+files/medion-s1-elite-panel-stacktrace.txt

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

Title:
  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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