mlogic / suspend-usb-device Goto Github PK

Solution?:
replace line:
echo 'suspend' > "$POWER_LEVEL_FILE"
by
echo "0" > "/sys/bus/usb/devices/$DEV_BUS_ID/power/autosuspend"
echo "auto" > "/sys/bus/usb/devices/$DEV_BUS_ID/power/level"

I'm using ubuntu 11.04 and found the the echo suspend line didn't work.

I searched and found; https://bbs.archlinux.org/viewtopic.php?id=95659 -
In kernels up to 2.6.32, you could also specify "suspend", meaning that the device should remain suspended and autoresume was not allowed. This setting is no longer supported.

solution - replace suspend with;
echo "0" > "/sys/bus/usb/devices/$port/power/autosuspend"
echo "auto" > "/sys/bus/usb/devices/$port/power/level"

Hi, thanks for a great script, it should do what I was looking for.. I just tested it with my USB disk, and I get this output - is that an error or is the disk powered off (the LED is still on so I think it's not):
$ sudo ./suspend-usb-device -v /dev/sdb
Found device /devices/pci0000:00/0000:00:1d.7/usb2/2-1 associated to /dev/sdb; USB bus id is 2-1
Syncing device /dev/sdb
synchronize cache(10): transport: Host_status=0x07 [DID_ERROR]
Driver_status=0x08 [DRIVER_SENSE, SUGGEST_OK]

Stopping device /dev/sdb
start stop unit: transport: Host_status=0x07 [DID_ERROR]
Driver_status=0x08 [DRIVER_SENSE, SUGGEST_OK]