[Bug 73901] Kernel crash after modprobe radeon runpm=1

bugzilla-daemon
2014-04-14T17:31:34Z

--- Comment #8 from Pali Rohár <pali.rohar@gmail.com> ---
(In reply to Alex Deucher from comment #7)
> (In reply to Pali Rohár from comment #6)
> > Btw, I looked into DSDT/SSDT acpi tables and there is ATPX method (in SSDT7,
> > scope \_SB.PCI0.GFX0).
>
> Did you enable vgaswitcheroo support in your kernel config?

Kernel is from http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.14-trusty/

And in file /boot/config-3.14.0-031400-generic I see:

CONFIG_VGA_SWITCHEROO=y