[Nut-upsdev] Re: Fw: NUT hidups dont working on new linux kernels

[Peter Selinger]

=?windows-1252?Q?Kri=9Atof_Petr?= wrote:
> 
> Peter Selinger wrote:
> > I am forwarding the below message. Does anybody on this list know
> > anything about this problem?
> > 
> > Petr - perhaps you should switch from the "hidups" to the "newhidups"
> > driver. I believe it supported the APC Back UPS even in NUT 2.0.2, and
> > it certainly does so in the Development version that you can get from
> > CVS (see the NUT download page).
> 
> No, the result is the same:
> # service ups start
> Starting newhidups: Network UPS Tools: New USB/HID UPS driver 0.23 (2.0.2)
> 
> No USB/HID UPS found

Yes, but you should start the driver with debugging enabled. Try this
(as root):

drivers/newhidups -u root -DD auto

At the very least, it should give you some more useful debugging info.

> > Also, could you post the output of "ls -l /dev/usb"? Perhaps this is
> > not a kernel problem at all, but a problem of a missing device node.
> 
> # ls -al /dev/usb
> total 0
> drwxr-xr-x  2 root root     60 Dec  8 11:33 .
> drwxr-xr-x  9 root root   3740 Dec  8 11:35 ..
> crw-rw----  1 root nut  189, 1 Dec  8 11:33 ups0

Hm. Newhidups actually does not use /dev/usb, it uses /proc/bus/usb.
I believe the kernel change only affected hotplugging, i.e.,
permissions, and not the actual USB interface. If this is true, then
with "-u root", it should work anyway. 

-- Peter