Ok, this is indeed Slow keys. The problem is caused by holding SHIFT button for N seconds. It can be turned off by holding SHIFT again for N seconds (not a permanent fix). Unfortunately it seems that under Gnome 3, there is no gui to configure this accessibility feature correctly.
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/746892 Title: Keyboard randomly stops working, but autorepeat and mouse work To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/746892/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs