[Nut-upsdev] NUT-2.0.5: newhidups on RedHat ES4 ( cont'd )

[Arnaud Quette]

Hi Patrick,

any news on that front?
I haven't had time to step up before, so don't hesitate to call me...
And thanks to Charles for the interim ;-)

2007/4/4, Charles Lepple <clepple at gmail.com>:
> On 4/4/07, Patrick Agrain <patrick.agrain at alcatel-lucent.fr> wrote:
> > At 14:22 04/04/2007, Charles Lepple wrote:
> > >On 4/4/07, Patrick Agrain <patrick.agrain at alcatel-lucent.fr> wrote:
> > >>
> > >> >
> > >> >This error doesn't look good.
> > >> >
> > >> >Can you retrieve the HID Report Descriptor with either Peter
> > >> >Selinger's descriptor tool (mentioned in the NUT list archives; email
> > >> >me back if you can't find it) or 'lsusb -vvv' run as root?
> > >>
> > >>Charles, here is the lsusb output :
> > >>
> > >>[root at sxb ~]# lsusb -vvv
> > >>Bus 001 Device 003: ID 0463:ffff MGE UPS Systems UPS
> > >[...]
> > >>          HID Device Descriptor:
> > >>            bLength                 9
> > >>            bDescriptorType        33
> > >>            bcdHID               1.00
> > >>            bCountryCode           33 US
> > >>            bNumDescriptors         1
> > >>            bDescriptorType        34 Report
> > >>            wDescriptorLength    1635
> > >>cannot get report descriptor
> > >
> > >You will sometimes see that last line when the kernel usbhid driver
> > >has taken over the UPS.
> >
> > usbhid tries, but exits with error :
> > Apr  5 04:43:22 sxb kernel: usb 1-1: new full speed USB device using address 3
> > Apr  5 04:43:22 sxb kernel: usbhid: probe of 1-1:1.0 failed with error -5
>
> Ah, right, I forgot about that. MGE UPSes were blacklisted from the
> usbhid driver, since at that time, usbhid could not retrieve reports
> from nested collections. So you're right, usbhid is not affecting the
> outcome.
>
> > [root at sxb tmp]# cat /proc/bus/usb/devices
> > T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  4 Spd=12  MxCh= 0
> > D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
> > P:  Vendor=0463 ProdID=ffff Rev= 1.00
> > S:  Manufacturer=MGE UPS SYSTEMS
> > S:  Product=EXtreme
> > S:  SerialNumber=885B25011
> > C:* #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr= 20mA
> > I:  If#= 0 Alt= 0 #EPs= 1 Cls=03(HID  ) Sub=00 Prot=00 Driver=(none)
> > E:  Ad=81(I) Atr=03(Int.) MxPS=   8 Ivl=10ms
> >
> > In /proc/bus/usb/devices, the UPS is not owned by the usbhid driver. This
> > is probably due to the previous probe error.
> >
> >
> > >I am not sure if this is the latest copy of Peter's get_descriptor
> > >tool, but it should do the trick:
> > >
> > >http://lists.alioth.debian.org/pipermail/nut-upsdev/2006-February/000612.html
> > >
> > >That mailing list thread was concerned with getting the correct
> > >wDescriptorLength, which I think you are seeing, but it also retrieves
> > >that many bytes from the UPS (and that is apparently where newhidups
> > >is getting an error).
> >
> > I'll try it.
>
> Sounds good.

Arnaud
-- 
Linux / Unix Expert - MGE UPS SYSTEMS - R&D Dpt
Network UPS Tools (NUT) Project Leader - http://www.networkupstools.org/
Debian Developer - http://people.debian.org/~aquette/
OpenSource Developer - http://arnaud.quette.free.fr/