https://bugs.freedesktop.org/show_bug.cgi?id=107324
--- Comment #1 from jamesstewartmiller@gmail.com --- sudo modprobe radeon gives modprobe: ERROR: could not insert 'radeon': Invalid argument I have tried oibaf drivers ppa and also have compiled a custom rt kernel (for audio use), with no joy. I have tried removing the hw xorg drivers reinstalling xorg-core, but again, no luck.