I have this USB hard drive enclosure that can also share the files on the local network (LAN DRIVE HD9-U2LA, vendor id – 05e3:0702). Due to that it has an operating system and some other software inside. Unfortunately this software is rather slow to start and that cause the following kernel error when trying to mount this enclosure:
[90459.236000] usb 5-5: new high speed USB device using ehci_hcd and address 9
[90459.368000] usb 5-5: configuration #1 chosen from 1 choice
[90459.368000] scsi4 : SCSI emulation for USB Mass Storage devices
[90459.368000] usb-storage: device found at 9
[90459.368000] usb-storage: waiting for device to settle before scanning
[90464.368000] usb-storage: device scan complete
[90470.148000] usb 5-5: USB disconnect, address 9
[90470.148000] scsi 4:0:0:0: scsi: Device offlined - not ready after error recovery
The device is fine, it is just slow to start. To work around this bug you can change /sys/module/usb_storage/parameters/delay_use from a default 5 second delay to something larger. 15 seconds worked fine in my case.
echo 15 | sudo tee /sys/module/usb_storage/parameters/delay_use
Update:
To do that permanently, create a file in /etc/modprobe.d (with a name slow_storage for example) that contains such line:
options usb_storage delay_use=15
2 Comments
Note: you might have to do this first:
modprobe usb_storage
I’m trying to get some files onto a MP4 player, and Linux was causing it to repeatedly crash and restart. The info you provided here helped me determine that it was the usb-storage scan that was causing the device to crash. Now I just need to find a workaround for that.
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