On 02/03/2012 08:51 PM, Charles Lepple wrote:
> On Feb 3, 2012, at 3:10 PM, Arnaud Quette wrote:
> 
>>> On the USB side of things, something seems fishy with the APC usb
>>> connection: it's been incrementing the Device ID, up to 124 from 004.
>>
>> this is not a big issue, and probably due to the 2.4.3 driver.
> 
> I tend not to agree - the device ID should not increase because of anything 
> the driver is doing. New device IDs are assigned after the kernel gives up 
> while trying to request the standard USB descriptors from the device.
> 
> Check your USB cable, and also see if there are messages in the kernel log 
> which match the increasing device ID.
> 

After looking into it more, it seems that running the usbhid-ups driver
is actually causing the device ID to increment.  If I just look at the
device under dmesg, I see it sitting in /dev/bus/usb/005/<deviceID>.
Here's an example dmesg output:
[252368.035392] usb 5-1: new full speed USB device using uhci_hcd and
address 53
[252368.188270] usb 5-1: New USB device found, idVendor=051d, idProduct=0003
[252368.188274] usb 5-1: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[252368.188277] usb 5-1: Product: Smart-UPS 3000 FW:UPS 06.5 / ID=18
[252368.188280] usb 5-1: Manufacturer: American Power Conversion
[252368.188282] usb 5-1: SerialNumber: IS1134004019
[252368.221312] generic-usb 0003:051D:0003.0037: hiddev96,hidraw4: USB
HID v1.00 Device [American Power Conversion Smart-UPS 3000 FW:UPS 06.5 /
ID=18] on usb-0000:00:1d.0-1/input0

When I try to start the driver, I get this message:

Network UPS Tools - Generic HID driver 0.35 (2.6.0)
USB communication driver 0.31
interrupt pipe disabled (add 'pollonly' flag to 'ups.conf' to get rid of
this message)
Using subdriver: APC HID 0.95
libusb_get_report: error sending control message: Invalid or incomplete
multibyte or wide character

At this point, the process is running:
root@www:/dev/bus/usb/005# ps aux | grep hid
nut       6290  0.0  0.0  14820   880 ?        Ss   13:47   0:00
/lib/nut/usbhid-ups -a rack1ups

And the device ID is incrementing:
[252551.896567] usb 5-1: usbfs: USBDEVFS_CONTROL failed cmd usbhid-ups
rqt 161 rq 1 len 512 ret -71
(lots of these, about 25)
[252552.004304] usb 5-1: USB disconnect, address 64

This keeps happening forever, until I kill the process manually.

Any ideas on how to debug this further?  I believe I'm using all of the
correct binaries.  To recap, I manually installed the 2.6.0 nut and
libupsclient on 10.04, but it seemed to be fine.  I'm using the amd64 build.

Thanks,

Zach

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