[Bug 99316] Radeon crash when laptop on AC power

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=99316

            Bug ID: 99316
           Summary: Radeon crash when laptop on AC power
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: major
          Priority: medium
         Component: DRM/Radeon
          Assignee: dri-devel at lists.freedesktop.org
          Reporter: LordSamanon at gmail.com

Created attachment 128807
  --> https://bugs.freedesktop.org/attachment.cgi?id=128807&action=edit
AC Power Unigine Heaven dmesg

I have a Dell laptop with an Intel iGPU and a Radeon dGPU (a Firepro W5130M,
recognized as a Radeon HD 8830M by lspci).

Whenever I attempt to use the Radeon card via DRI_PRIME=1 while the laptop is
plugged in, the card crashes. When on battery the card performs fine.

One way I have tested this is with glxgears. Often glxgears will work the first
time it is run, but if it is closed and then opened a few seconds later, it
will crash.

I have also tried running programs like Portal 2 and Unigine Heaven. These
always hang. Unfortunately the error messages produced in dmesg are not the
most consistent. Sometimes I get a backtrace, sometimes even a kernel panic on
reboot.

I'll post the various logs I have. One thing I have found is that glxgears does
not crash if I use radeon.runpm=0, however it still hangs when running
something like Portal.

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