[Bug 26891] Radeon KMS fails with inaccessible AtomBIOS on systems with (U)EFI boot

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=26891

--- Comment #47 from Bruno <bonbons67 at internet.lu> ---
> Radeon now works for me on a MBP 8,2 booted from efistub in Linux 3.8.x.
> Can anyone else confirm this? You just need to make sure you add the PCI IDs
> to the xorg for both cards. Should Xorg detect them automatically? Is this
> another bug?

For nouveau on a MBA also booted via EFI stub I was told that "detection of
display by Xorg" happened through some magic bit set by first going through
efifb prior to native driver.

Without going through efifb Xorg didn't want to choose the available nVidia
GPU. (though linux console happily used the GPU).

Possibly the same applies to radeon.

-- 
You are receiving this mail because:
You are the assignee for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20121229/f78b94ed/attachment.html>