Basic info about your system would help. That includes dmesg, xorg.0.log and lspci -vvvnn as attachments to bug report. SysRq magic keys could help you get to console login. (Alt Gr+SysRq+k to kill the "dead" xserver.)
I just had same symptoms and I was browsing if bug was reported. But the causes is nvidia binary driver for me. Also for future easiest way to report bugs is to use ubnutu-bug command. It will automaticaly collect relevant info and add to bug reports. Usage is ubuntu-bug <package which has problems>. In this case ubuntu-bug gdm would have worked for you. -- 9-12 update gives me a black sreen, no mouse or keyboard https://bugs.launchpad.net/bugs/428951 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
