Christopher, thanks for your time. Please disregard comment #8, as I was just making a comparison between two different machines - but probably that only added confusion.
Now, about the machine I reported the bug on: * 12.04.0, 12.04.1, 12.04.2, 12.04.4: X does not start after boot, not even by 'startx' (I attach /var/log/Xorg.0.log); * 12.04.3 halts right after boot with a kernel panic ("Kernel panic - not syncing - Attempted to kill init!"). So the first distribution running X is effectively 12.04.5, with the kernel reported above. Thanks, MZ ** Attachment added: "Xorg.0.log" https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1574667/+attachment/4692477/+files/Xorg.0.log ** Changed in: xorg (Ubuntu) Status: Incomplete => New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1574667 Title: Mouse pointer occasionally jumps to the bottom-left corner To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1574667/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs