I have the same problem. But unfortunately couldn't umount my usb either with umount ....
In my case the problem is Beagle. That for some reason runs on the devices. Here is what works for me: This will list all processes running on usbdisk: sudo lsof | grep /media/usbdisk The output in my case is: beagled-h 6160 nasos 48r REG 8,17 192000 54791 /me...... Next I kill beagled - helper (proccess 6160 in here) : sudo kill -9 6160 and then I just unmount. sudo umount /media/usbdisk I don't know what effects to beagle this might have. -- Cannot unmount volume: not very helpful error message https://bugs.launchpad.net/bugs/81239 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
