I have also had the same symptoms, I stop receiving keyboard events in X after a VT switch, and I get the same errors in Xorg log. I started getting this bug when upgrading to karmic from jaunty, however, the live cd environment or a clean install in a separate partition isn't able to reproduce the bug.
The bug seems to depend on when gdm starts. For instance, if I let gdm start automatically like normal, then I will have the keyboard disabled in X on a VT switch. Logging out and logging back in will workaround the problem, and then I can do as much VT switching as I want without losing the keyboard. I can also completely avoid the bug by delaying gdm to start at rc.local, for instance by adding "initctl emit startdm" to my /etc/rc.local script and adding to "and startdm" to the "start on" upstart condition in /etc/init/gdm.conf. The bug also only seems to affect my keyboard when plugged in as a PS/2 keyboard. I have a PS/2 to USB adaptor that lets me plug in the keyboard into a usb slot, and then I will not get this issue anymore. I hope that helps. -- device key_bitmask has changed https://bugs.launchpad.net/bugs/437862 You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-input-evdev in ubuntu. _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp