[Nut-upsuser] Bogus "UPS not available" messages

[Arjen de Korte]

Eric S. Raymond wrote:

> But now I've got different troubles.  Trunk no longer detects the UPS.
> 
> root at snark:/home/esr/svn/nut/trunk# /usr/bin/upsdrvctl start
> Network UPS Tools - UPS driver controller 2.1.0 (916M)
> Network UPS Tools 2.1.0 (916M) - Megatec protocol driver 1.5.3 [megatec_usb]
> Carlos Rodrigues (c) 2003-2007
> 
> Serial-over-USB transport layer for Megatec protocol driver [megatec_usb]
> 
> Megatec protocol UPS not detected.
> Driver failed to start (exit status=1)
> 
> System log has many entries that say:
> 
> May 24 12:18:37 snark kernel: [136718.407859] usb 3-2: usbfs: process 26061 (megatec_usb) did not claim interface 0 before use
> 
> How do I troubleshoot this?

Generally it is a good idea to run the driver in debug mode and see what
it is reporting then.

     megatec_usb -u root -DDDDD -a <upsname>

Best regards, Arjen