[Bug 74551] Unable to run linux with radeon.runpm=1

bugzilla-daemon
2014-07-18T15:08:52Z

--- Comment #18 from maxis11 <ya.maxis11@yandex.ru> ---
(In reply to Alex Deucher from comment #17)
> (In reply to maxis11 from comment #16)
> >
> > So it seems that this is Acer BIOS problem freezes laptop, when trying to
> > turn off dGPU. Am I right?
>
>
> Either that or it requires some special system specific handling.

In BIOS switch menu Graphics mode from switchable to integrated. Now system
starts with runpm, but, as expected, dGPU turned off and linux can't find them.
Seems that this is exactly BIOS problem.
Bios:
Vendor: Phoenix Technologies Ltd.
Version: V1.17
Release Date: 04/09/2012