[Bug 36003] [Radeon HD 5650 and 5470] Driver crash during recovery boot and in normal boot (Regression from 2.6.38-3 to -4)

[bugzilla-daemon at freedesktop.org]

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

--- Comment #15 from Ap. Syvertsen <taperkatt at gmail.com> 2011-05-27 05:29:27 PDT ---
(In reply to comment #14)
> It's not the ucode.  It looks like the driver is loading on a gfx card that is
> not powered up.  As such the driver is not able to initialize the card. 
> There's an acpi method that's required to power up the discrete card.

Is this acpi method supposed to be run by the kernel prior to the loading of
the driver?
Would a fail in this acpi method call cause the GPU softreset, the discrepancy
of the VRAM and ultimately the fail during the loading of the driver?

I can't find any differences between the acpi-calls in the good and bad
kern.log files but then again I'm not a linux developer and don't really know
what to look for.

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