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

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

--- Comment #30 from David L. equinox-freedesktopbugs@diac24.net 2012-08-03 22:54:12 UTC --- (In reply to comment #29)

Is the lvds console display shifted if you don't connect any external monitor ?

So far I only got the LVDS to display anything by connecting the DP monitor, so I don't really know. I didn't try much there... I'll try some other magic incantations/plug sequences tomorrow, maybe there's a sequence to get LVDS-only with it actually showing something.

Starting X while the LVDS is off works fine, reenabling it.

Also, the "LVDS off" state after loading the module has the backlight off too, maybe it's a bug in the brightness control and there is content but I just don't see it...