[Nut-upsdev] Cyberpower 900AVR/BC900D newhidups problem

Lincoln Turner lincolnturner at gmail.com
Fri Apr 14 03:14:32 UTC 2006

I'm trying to get nut to work with a Cyberpower 900AVR. There are many
different products known by this name, but this one has the extra name

I am told by a cyberpower tech that this one should talk exactly the
same USB protocol as the 685AVR, which was recently made to work with

Unfortunately, when I run the SVN checkout (trunk) of nut-2.1, I get:

sstreet drivers # ./newhidups -DDDDD -u root /dev/usb/hiddev0
Network UPS Tools: New USB/HID UPS driver 0.28 (2.1.0)

debug level is '5'
Checking device (0000/0000) (005/001)
- VendorID: 0000
Checking device (0764/0005) (002/002)
- VendorID: 0764
- ProductID: 0005
- Manufacturer: unknown
- Product: unknown
- Serial Number: unknown
- Bus: 002
Trying to match device
Device matches
failed to claim USB device, trying 2 more time(s)...
detaching kernel driver from USB device...
trying again to claim USB device...
HID descriptor too short (expected 8, got 0)
Checking device (0000/0000) (002/001)
- VendorID: 0000

The dmesg output at this time is:

usb 2-2: newhidups timed out on ep0in len=0/255
usb 2-2: usbfs: USBDEVFS_CONTROL failed cmd newhidups rqt 128 rq 6 len 255 ret
usb 2-2: newhidups timed out on ep0in len=0/255
usb 2-2: usbfs: USBDEVFS_CONTROL failed cmd newhidups rqt 128 rq 6 len 255 ret
usbhid 2-2:1.0: disconnect by usbfs
drivers/usb/core/file.c: removing 96 minor

which seems to indicate a low-level communications error. I do have
the usbhid module loaded, with the standard HID-extensions options
checked in kernel config. I'm running Linux 2.6.15-gentoo-r1 #8 SMP.

The bootup logs for initing this device, from dmesg are:
usb 2-2: Product: CPS RS232 USB BRIDGE for UPS
usb 2-2: Manufacturer: Cyber Power System
usb 2-2: hotplug
usb 2-2: adding 2-2:1.0 (config #1, interface 0)
usb 2-2:1.0: hotplug
drivers/usb/core/inode.c: creating file '002'
hub 3-0:1.0: state 5 ports 2 chg 0000 evt 0000
usbcore: registered new driver hiddev
hub 4-0:1.0: state 5 ports 2 chg 0000 evt 0004
usbhid 2-2:1.0: usb_probe_interface
usbhid 2-2:1.0: usb_probe_interface - got id
uhci_hcd 0000:00:1d.1: suspend_rh (auto-stop)
uhci_hcd 0000:00:1d.3: suspend_rh (auto-stop)
drivers/usb/input/hid-core.c: usb_submit_urb(ctrl) failed
drivers/usb/input/hid-core.c: timeout initializing reports

drivers/usb/core/file.c: looking for a minor, starting at 96
hiddev96: USB HID v1.10 Device [Cyber Power System CPS RS232 USB BRIDGE for UPS
] on usb-0000:00:1d.0-2
usbcore: registered new driver usbhid
drivers/usb/input/hid-core.c: v2.6:USB HID core driver
uhci_hcd 0000:00:1d.2: port 2 portsc 009b,00

Oh, and I had to comment out these lines in libhid.h to get it to
/* ensure these exists (required for Solaris 10) */
//#ifndef u_int16_t
//      typedef uint16_t u_int16_t;
//#ifndef u_int8_t
//      typedef uint8_t u_int8_t;

... but I assume these were only relevant to solaris? Or is this a



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