(In reply to Felix Miata from comment #17) > Now it works. I found a conflict left behind from a failing try to make a > 'Section "ServerLayout"' work for dual displays: > > 15-ddxdrv.conf: > Section "Device" > Identifier "DefaultDevice" > Driver "modesetting" > EndSection > > Apparently 'Option "AccelMethod" "none"' from 50-device.conf wasn't getting > read as a result. Yeah. This explains it ... At least we now have a workaround for Mindaugas' 32bit machine from 2005. Dumb slow, but what can we do? Nobody will still look into RS400 issues. Seriously.