[Bug 61891] Cannot switch off Radeon 6400M with vgaswitcheroo
bugzilla-daemon at bugzilla.kernel.org
bugzilla-daemon at bugzilla.kernel.org
Sat Dec 28 04:45:32 PST 2013
https://bugzilla.kernel.org/show_bug.cgi?id=61891
--- Comment #41 from Rafael J. Wysocki <rjw at rjwysocki.net> ---
(In reply to Mike Lothian from comment #39)
> Created attachment 119881 [details]
> Output of "ls -lR /sys/devices/LNXSYSTM\:00/"
>
> In case mine is different
It is different, but the layout seems to be analogous.
In your case the files of interest are:
/sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/device:2f/LNXVIDEO:00/path
/sys/devices/LNXSYSTM:00/device:00/PNP0A08:00/LNXVIDEO:01/path
In both cases LNXVIDEO:00 and LNXVIDEO:01 seem to be the Radeon and the Intel
graphics, respectively.
If that's the case, the attached dmesg output means that the power_removed flag
in the patch is set for the Intel graphics, but the hotplug event is generated
for the Radeon. I'm not sure why at the moment.
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