https://bugzilla.kernel.org/show_bug.cgi?id=19002
--- Comment #35 from Holger Lenz holger.lenz@onlinehome.de 2010-12-15 22:19:00 --- (In reply to comment #34)
(In reply to comment #33)
Question is, why is radeon not loaded before X is started?
Depends on your distro's inird and modprode config. It should load automatically at boot on most recent distros that support kms.
OK, I'll just add radeon and any helpers it needs to the initrd and be done with it.
The situation is as follows: - in AGP mode radeon needs to be loaded manually before X starts (then uses r600). Probably tries to do this automatically and fails somehow, - in PCI mode, X with radeon will be loaded automatically (!) The error described above (ttm_backend_bind) disables r600 and makes X use radeon+swrast
I have not figured this out yet - what to complain about in a new bug report.