Recently installed a R9 270x on my system. For the life of me, I cannot determine what is wrong. The BIOS uses it by default, during early boot the system uses it, but during the VT switchoff, my system switches to APU graphics during a series of GPU page faults. Also, when running startxfce, the first time after boot fails, and the following uses only the APU graphics.
sudo lshw -sanitize > http://pastebin.com/tkihM4rH
sudo journalctl -b -kxam > http://pastebin.com/EJcwcYU6
cat /var/log/Xorg.0.log > http://pastebin.com/wCbzws9d
cat /var/log/Xorg.o.log.old > http://pastebin.com/GaAL5Tqa
Xorg is working on auto.
Opened a bug report at https://bugs.freedesktop.org/show_bug.cgi?id=81255 since this is not a configuration issue.