On up to date Lucid as of 2010-03-09, this is still a problem with no xorg.conf file, with KMS and with compiz. (X defaults to EXA).
$ cat /proc/version_signature Ubuntu 2.6.32-16.24-generic Messages in kern.log are: [ 415.461546] [drm:radeon_cs_ioctl] *ERROR* Failed to parse relocation ! [ 1754.333393] [drm:radeon_cs_ioctl] *ERROR* Failed to parse relocation ! [ 1754.347688] [drm:radeon_cs_ioctl] *ERROR* Failed to parse relocation ! [ 2089.468099] [drm:radeon_cs_ioctl] *ERROR* Failed to parse relocation ! [ 2089.482369] [drm:radeon_cs_ioctl] *ERROR* Failed to parse relocation ! [ 3899.003282] [drm:radeon_cs_ioctl] *ERROR* Failed to parse relocation ! [ 3922.245559] [drm:radeon_cs_ioctl] *ERROR* Failed to parse relocation ! [ 3948.117491] [drm:radeon_cs_ioctl] *ERROR* Failed to parse relocation ! -- [lucid] desktop runs out of video memory on ATI Radeon Mobility 7500 https://bugs.launchpad.net/bugs/507148 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs