[Bug 61891] Cannot switch off Radeon 6400M with vgaswitcheroo

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=61891

--- Comment #56 from Rafael J. Wysocki <rjw at rjwysocki.net> ---
Created attachment 119961
  --> https://bugzilla.kernel.org/attachment.cgi?id=119961&action=edit
ACPIPHP / radeon: Fix VGA switcheroo problem related to hotplug events

Thanks for testing!

That was a debug-only version of the patch, though, because the no_hotplug flag
also needs to be checked in trim_stale_devices().  The attached one is a
candidate for the final version (in addition to extending the ACPIPHP changes I
removed the debug output from it and added a comment explaining what's going on
to radeon_atpx_detect().

Please test this one and report back.

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