[Nut-upsuser] How do I get the richcomm_usb driver - to work !

Charles Lepple clepple at gmail.com
Thu Nov 17 00:40:36 UTC 2011

On Nov 16, 2011, at 3:34 PM, Iain Simpson wrote:

> Here yet again
> got the driver built but when I ran got the following errors :
> $19:54:10 ~/nut/nut-2.6.2/drivers >sudo ./upsdrvctl -D start
> [sudo] password for iain:
> Network UPS Tools - UPS driver controller 2.6.2
>   0.000000	Starting UPS: vix2120
> Network UPS Tools - Richcomm dry-contact to USB driver 0.04 (2.6.2)
> Warning: This is an experimental driver.
> Some features may not function correctly.
> USB device [0925:1234] matches, but driver callback failed: could not detach kernel driver from interface 0: Operation not permitted
>   0.091309	Driver failed to start (exit status=1)

What does 'ls -lR /proc/bus/usb' say?

Also, what if you try 'sudo /lib/nut/richcomm_usb -D -a vix2120 -u root'?

> Sorry I don't really understand what's happening.

'Operation not permitted' means there's probably a permissions error, in this case on the node in /proc/bus/usb corresponding to your UPS.

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