When safely removing a device with the option from the context menu the following error is generated.
"Unable to stop device
Error detaching: helper exited with exit code 1: sense buffer empty
Error SYNCHRONIZE CACHE for /dev/sdc: Success sense buffer empty
Error STOP UNIT for /dev/sdc: No such file or directory"
A screenshot of the warning dialogue, taken from a downstream duplicate: http://launchpadlibrarian.net/36693130/USB_Flash_Memory_error.png
This image says:
"Unable to stop USB Flash Memory
Error detaching: helper exited with error code 1: synchronize
cache(10): Fixed format, current; Sense key: Key=9
Additional sense: Logical unit not ready, cause not reportable
Info fld=0x0 
Error SYNCHRONIZE CACHE for /dev/sdd: Success
start stop unit: transport: Host_status=0x07 [DID_ERROR]
Driver_status=0x00 [DRIVER_OK, SUGGEST_OK]
Error STOP UNIT for /dev/sdd: No such file or directory"
This bug was reported originally by Martin Thoma at Launchpad in Ubuntu at <https://launchpad.net/bugs/466575>.
Created attachment 38891 [details]
Same problem here Ubuntu 10.04
<code>Error detaching: helper exited with exit code 1: Detaching device /dev/sdc</code>
Kernel 2.6.32-24-generic #42-Ubuntu SMP Fri Aug 20 14:21:58 UTC 2010 x86_64 GNU/Linux
USB3 hdd Bus 002 Device 005: ID 174c:5106 ASMedia Technology Inc.
Ext4 partition on external hard drive
Automatic mount unmount appear to be ok but get this error when "safe remove" it.
Here is a hwinfo if it can help.
Created attachment 38892 [details]
Fail to stop the volume dialog window
Error detaching: helper exited with exit code 1: Detaching device /dev/sdc
USB device: /sys/devices/pci0000:00/0000:00:1d.7/usb2/2-2)
SYNCHRONIZE CACHE: FAILED: No such file or directory
(Continuing despite SYNCHRONIZE CACHE failure.)
STOP UNIT: FAILED: No such file or directory
Just got this on Ubuntu 11.04
Method "DriveEject" with signature "as" on interface "org.freedesktop.UDisks.Device" doesn't exist
We no longer do this so closing.