[Nut-upsuser] Working UPS report: Geek Squad GS-700U (Cyberpower clone?)

Charles Lepple clepple at gmail.com
Wed Oct 10 14:05:30 UTC 2007

On 10/10/07, Victor Rehorst <chuma at chuma.org> wrote:
> The USB bus layout here is extremely simple: one root hub with one
> port.  /proc/bus/usb/devices tells me this about the CyberPower USB
> device.  Is there supposed to be a driver loaded for it?
> T:  Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#=  3 Spd=1.5 MxCh= 0
> D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
> P:  Vendor=0764 ProdID=0005 Rev= 4.00
> S:  Manufacturer=Cyber Power System
> S:  Product=CPS RS232 USB BRIDGE for UPS
> C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr= 20mA
> I:  If#= 0 Alt= 0 #EPs= 2 Cls=03(HID  ) Sub=00 Prot=00 Driver=(none)
> E:  Ad=81(I) Atr=03(Int.) MxPS=   8 Ivl=10ms
> E:  Ad=02(O) Atr=03(Int.) MxPS=   8 Ivl=10ms

After usbhid-ups starts, it detaches the Linux kernel HID driver
(usbhid) from the UPS. This is necessary to work around the
limitations in the current kernel HID API.

- Charles Lepple

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