https://bugs.freedesktop.org/show_bug.cgi?id=70910
--- Comment #6 from Michel Dänzer michel@daenzer.net --- (In reply to comment #2)
Unfortunately I can't make both drivers work with glamor now, X fails to start.
The log file looks like it starts up fine; it looks like there's a VT switch before the end of the log. Why do you say it fails to start? Is there more information in the X server's stderr output?
(In reply to comment #4)
If I remove xorg.conf (both cards still plugged in), I have one screen working (radeonsi) with correct colors.
Looks like the Evergreen card should be available via DRI_PRIME in this case.