[Bug 56911] Switching to i915 cause a black screen on macbookpro 8,2

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=56911

Stephane Travostino <stephane.travostino at gmail.com> changed:

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--- Comment #5 from Stephane Travostino <stephane.travostino at gmail.com> ---
Yes, I'm experiencing the same problem on Archlinux, kernel 3.12.1.

My laptop is a Sony Vaio SA series with hardware GPU switch. The systems always
starts with the Intel GPU enabled and active.
When switching to the dedicated ATI card I get a blank screen.

How may I help debug this? I'd really like to use the dedicated card, and
there's no way, apart from using the proprietary Catalyst drivers, to enable
the ATI card.

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