i get similar problem after upgrade to 12.04 my cpu is dell optiplex 780
* keyboard and mouse does not respond on gui login prompt * can access grub, but failed to press 'e' to try to login into text mode * network is not active now. before upgraded, i could ping and login using ssh. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1006145 Title: Logitech Mouse not recognised on boot in 12.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1006145/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs