Same here, when I "safely remove" the external USB drive, Maxtor, 500GB. It does unmount as it should, though. Ubuntu 12.04.4, gnome-shell.
Error detaching: helper exited with exit code 1: Detaching device /dev/sdc USB device: /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-1/2-1.2) SYNCHRONIZE CACHE: OK STOP UNIT: FAILED: No such file or directory -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/466575 Title: secure remove of external USB-HDD produces error To manage notifications about this bug go to: https://bugs.launchpad.net/udisks/+bug/466575/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs