[Bug 30052] Fails to start X with intel+Ati video, whith modeset=1

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=30052





--- Comment #16 from Seth Forshee <seth.forshee at canonical.com>  2011-06-03 13:53:31 ---
Adding here some of the information that I added to the freedesktop.org
bugzilla here:

https://bugs.freedesktop.org/show_bug.cgi?id=36003

It seems to me that nothing being done currently in the radeon and switcheroo
code guarantees that the ATI card is powered on before probing the hardware. I
tried adding a call to the ATPX method to turn on power from
radeon_register_atpx_handler(), but this doesn't seem to be helping. Can anyone
comment on what steps need to be taken to ensure that the card is powered on
before proceeding with hardware initialization?

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