Comment 13 indicated that it was indeed a hardware problem, and I never got any dmesg output (see comment 14) from Jackflap, which would give some more information about the problem.
Parameshwara, your dmesg output in comment 6 also points to a hardware problem: [ 36.652000] usb 5-3: device not accepting address 4, error -110 thus I didn't see anything here which we could fix in hal. -- USB drive not detected if booted with drive connected https://bugs.launchpad.net/bugs/49890 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