[Bug 84431] Kernel crash when unloading radeon module for switcheroo card

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=84431

Peter Wu <peter at lekensteyn.nl> changed:

           What    |Removed                     |Added
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                 CC|                            |peter at lekensteyn.nl

--- Comment #9 from Peter Wu <peter at lekensteyn.nl> ---
(In reply to Pali Rohár from comment #7)
> Function vga_switcheroo_init_domain_pm_optimus_hdmi_audio() is used in
> sound/pci/hda/hda_intel.c. So that driver has same problem and cause kernel
> panic on driver unload.

A patch for this issue is queued at
http://mailman.alsa-project.org/pipermail/alsa-devel/2016-July/110125.html

Joaquín, how does 97d30fa35 break nouveau vga-switcheroo? If you load nouveau
with runpm=0, then you can write OFF to debugfs' vga_switcheroo. However
runpm=1 (or -1 for Optimus systems) is recommended.

I think that the original bug is fixed, so this can be marked as resolved?

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