On Fri, 14 Mar 2014, Peter Fassberg wrote:
> Hi!
>
> I'm using quite a few USB HID devices, but one of them fail.
>
> I have really no idea about what is going on here, and it's an odd
> card (my geothermal heat pump).
>
> Maybe you have an idea about why it doesn't get recognized by the HID driver?
>
> VID/PID: 0xFFFF / 0x0002 :(
>
> Kernel: 3.3.8
>
> Kernel output:
> ----------------------------------------------------------------------
> [ 416.820000] usb 1-1: USB disconnect, device number 2
> [ 425.030000] usb 1-1: new full-speed USB device number 3 using ehci-platform
> ----------------------------------------------------------------------
>
>
> cat /proc/bus/usb/devices
> ----------------------------------------------------------------------
> T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 8 Spd=12 MxCh= 0
> D: Ver= 1.10 Cls=ff(vend.) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1
> P: Vendor=ffff ProdID=0002 Rev= 1.00
The Class value is probably the reason. The device claims to belong to
a vendor-specific class, not the standard HID class.
You may be able to get it to work by doing
echo 0xffff 0x0002 >/sys/bus/usb/drivers/usbhid/new_id
Alan Stern
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