happende here too: what helped me: try this PPA. it helped with my probs
deb http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu karmic main then do a dist-upgrade notice: install ppa-purge at first! if you can't get to X again, you might have no internet connection (wifi) so the best would be to first dist- upgrade, then downgrade via ppa-purge, and then dist-upgrade again, then all packages are in /var/cache/apt/archives and can be installed with ppa-purge without a internet connection from their website: !!!!!!!!To revert to official packages, you can install the ppa-purge package and run "sudo ppa-purge xorg-edgers". Note that you will want to reinstall linux-libc-dev afterwards manually if you had libdrm-dev installed on karmic and newer!!!!!!! website: https://launchpad.net/~xorg-edgers https://launchpad.net/~xorg-edgers/+archive/ppa posted this "solution" also on https://bugs.launchpad.net/ubuntu/+source /xserver-xorg-video-ati/+bug/500056 one thing to add: I know my solution isn't first best, but perhaps it helps someone and the developers can figure out what exactly caused the problem -- On first login, but not second, switch user freezes X https://bugs.launchpad.net/bugs/526181 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
