I can confirm this bug and the solution presented by Jon A.: My system is a "Dell Latitude D820" with no cables connected at all. A boot up with the WiFi switch turned OFF will fail with a freezed splash screen, the recovery mode shows a "Bug: soft lockup detected on CPU#0!" during starting LVM. If I set the WiFi switch to ON the system boots up normal. I tested this behaviour five times each way.
I have an up-to-date system with no special adaptions. I use the nvidia- glx. If more informations are needed, please feel free to contact me. -- BUG: soft lockup detected on CPU#0! https://launchpad.net/bugs/60053 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs