I can confirm this on FireGL Mobility V5000 (M26). The relevant Xorg log says:
$ grep -B3 EE /var/log/Xorg.20.log ... drmOpenByBusid: drmOpenMinor returns 10 drmOpenByBusid: drmGetBusid reports pci:0000:01:00.0 (II) [drm] DRM interface version 1.0 (EE) [drm] Could not set DRM device bus ID. (EE) RADEON(0): [dri] DRIScreenInit failed. Disabling DRI. This error can be found in the attached log as well. ** Attachment added: "Xorg log of guest session" http://launchpadlibrarian.net/25683692/Xorg.20.log -- Extra X sessions very slow because of EXA and no DRI [Jaunty, radeon] https://bugs.launchpad.net/bugs/361060 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