https://bugzilla.kernel.org/show_bug.cgi?id=19002

--- Comment #20 from Holger Lenz holger.lenz@onlinehome.de 2010-12-14 21:08:06 --- Thanks a lot Ducan, for all the info. You helped me eliminate several variables. AGP still won't work, but I'll just see how far I get with PCI(E) mode I'm now always forcing KMS by using radeon.modeset=1

Looking at the demsg, the following two errors seem to prevent X from loading the r600 module:

This (1) [drm] Forcing AGP to PCIE mode [ 17.311865] radeon 0000:01:00.0: PCI: Disallowing DAC for device [ 17.311867] radeon: No suitable DMA available.

and this (2) [drm:radeon_ttm_backend_bind] *ERROR* failed to bind 1 pages at 0x00000000 [ 17.485886] radeon 0000:01:00.0: object_init failed for (4096, 0x00000002) [ 17.485889] radeon 0000:01:00.0: (-12) create WB bo failed [ 17.485892] radeon 0000:01:00.0: disabling GPU acceleration [ 17.502518] radeon 0000:01:00.0: f7229e00 unpin not necessary

any ideas, how to fix these?