2012/6/28 Michel Dänzer <daen...@debian.org> > On Mit, 2012-06-27 at 22:24 +0200, Johannes Baiter wrote: > > 'a' at the prompt after writing the report, but it was included by the > package bug script anyway. >
The log that was auto-attached was actually the log without rotation, not that it mattered greatly :-) > > > > OpenGL renderer string: Gallium 0.4 on llvmpipe (LLVM 0x209) > > llvmpipe is software rendering, not hardware acceleration. > > > Ah, that explains a lot! Somehow my brain was hard-wired into associating lack of acceleration with the MESA software driver, I haven't been using the open source radeon driver for a long time :-) > > > DRM Information from dmesg: > > --------------------------- > > [ 0.000000] No AGP bridge found > > [ 0.000000] No AGP bridge found > > [ 0.463471] Linux agpgart interface v0.103 > > Looks like something is preventing the radeon kernel driver from > loading / initializing. Is it built into the kernel or as a module? If > the latter, what happens if you try to run 'sudo modprobe radeon' from > console (ideally before X starts)? > That did the trick! Turns out the radeon module was not loaded at boot-time, probably it was not in the initrd. Loading the module and starting X.org with rotation enabled works now, as does XRandR. Sorry for opening a silly "bug" like this, but maybe this could be considered a real-world use-case for more explicit error messages ;-) Thank you!