I am using a single-monitor 1280x1024 setup with a 256M FireGL V3700, and a similar issue is exhibited (differing only in log output). I have successfully used a dual-monitor setup with this card where _both_ monitors had higher resolution than this one; I agree that this is not likely to be caused by a lack of sufficient memory to start an X server.
The issue remains when no compositing manager is running, and on a system that has been booted recently. Logs: (==) Log file: "/var/log/Xorg.1.log", Time: Tue Mar 20 05:52:50 2012 (==) Using config file: "/etc/X11/xorg.conf" (==) Using system config directory "/usr/share/X11/xorg.conf.d" (EE) fglrx(0): Not enough video memory to allocate back buffer. Fatal server error: AddScreen/ScreenInit failed for driver 0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/939858 Title: Switch user does not work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/fglrx-installer/+bug/939858/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs