[Bug 64850] Second screen black on Pitcairn PRO

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=64850

--- Comment #17 from Jakob Nixdorf <flocke at shadowice.org> ---
Created attachment 79737
  --> https://bugs.freedesktop.org/attachment.cgi?id=79737&action=edit
ROM Dump

I played around some more. I compiled my kernel with UMS enabled and booted
with 'radeon.modeset=0' which resultet in the 'radeon' module beeing loaded
successful and without the 'Invalid ROM contents' error. Also both screens are
active in the TTY.
After running 'rmmod radeon && modprobe -v radeon modeset=1' the DVI-0 screen
goes black again and the TTY is only shown on HDMI-0. Also the 'Invalid ROM
contents' error shows up again.

Additionally I made a dump of the ROM ('echo 1 >
/sys/bus/pci/devices/0000:01:00.0/rom && cat
/sys/bus/pci/devices/0000:01:00.0/rom > rom-dump'), because this error somehow
bugs me ;) maybe it can help.

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