[Nut-upsuser] Cyberpower Value 600E UPS (USB) is not recognized by usbhid-ups under FreeBSD 7.2

[Daniel O'Connor]

On Tue, 19 May 2009, forsite wrote:
> Have anybody tried Cyberpower Value 600E (USB) under FreeBSD?
> usbhid-ups from nut 2.4.1 does not recognize (find) the device on my
> machine.
> [root at substance /usr/local/libexec/nut]# dmesg | grep uhid
> uhid0: <CPS UPS VALUE, class 0/0, rev 1.10/0.01, addr 2> on uhub0
>
> [root at substance /usr/local/libexec/nut]# ls -l /dev/uhid0
> crw-rw----  1 uucp  wheel    0,  79 18 May 20:51 /dev/uhid0
...
> Any ideas what could be wrong here?

As you found later, the problem is that the uhid driver grabs the UPS 
but NUT needs ugen to get it before it can talk (unlike Linux libusb 
can't kick the kernel driver off the device).

You can try not loading uhid as a work around and see if it works (it 
should do, make sure you chmod /dev/ugenX* as required).

The actual fix is to add an entry in the blacklist for uhid devices 
in /usr/src/sys/dev/usb/usb_quirks.c (around line 115) for the vendor/id 
of your UPS. I think you also need to add an entry 
to /usr/src/sys/dev/usb/usbdevs for the UPS itself. That requires a 
kernel rebuild BTW.

If you give me the output of 'usbdevs -v' I can whip up a quick patch.

-- 
Daniel O'Connor software and network engineer
for Genesis Software - http://www.gsoft.com.au
"The nice thing about standards is that there
are so many of them to choose from."
  -- Andrew Tanenbaum
GPG Fingerprint - 5596 B766 97C0 0E94 4347 295E E593 DC20 7B3F CE8C
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