Okay, the problem is not USB, but X server of Ubuntu Lucid. In my PC, it needs "xforcevesa".
--- Okajima. -- Lucid beta2 unstable https://bugs.launchpad.net/bugs/559432 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs