Hi! I had the same problem:
After doing a full upgrade from Jaunty keyboard and mouse were disabled under X. I could ssh to the machine and after shutting down gdm I got back to the terminal where the keyboard was working well. After reading through the comments, I checked the Device entries in xorg.conf It turned out that udev has some different naming scheme and the old device paths were invalid. So for example: instead of: Option "Device" "/dev/input/mouse" I had to write Option "Device" "/dev/input/by-path/platform-i8042-serio-3-mouse" and do the same for the keyboard as well. After this change the system is back on track! Greets, pentike -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/555169 Title: [lucid] Keyboard and mouse freeze after grub, usb and PS/2 keyboard not working in X (after upgrade? bad-upgrade to lucid) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-keyboard/+bug/555169/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
