[Nut-upsuser] CyberPower usbhid-ups continuously disconnects/reconnects

[nut at johnea.net]

On 06/08/2011 12:35 AM, Arnaud Quette wrote:
> Hi
> 
Thanks for your reply Arnaud!

I've installed a bunch of updates, including an update to nut 2.6.1, and
the symptoms have changed slightly, but I believe the root issue is
still unchanged.

I attempt to start the daemon during init, but it fails.

After boot, I see repeated disconnect/reconnect of the UPS:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jun  8 18:07:03 sensor003 kernel: [  387.250020] usb 3-2: USB
disconnect, address 18
Jun  8 18:07:06 sensor003 kernel: [  390.366650] usb 3-2: new low speed
USB device using uhci_hcd and address 19
Jun  8 18:07:07 sensor003 kernel: [  390.688533] generic-usb
0003:0764:0501.0012: hiddev0,hidraw0: USB HID v1.10 Device [CPS CP425HG]
on usb-0000:00:10.1-2/input0

Jun  8 18:07:28 sensor003 kernel: [  411.500020] usb 3-2: USB
disconnect, address 19
Jun  8 18:07:29 sensor003 kernel: [  412.476677] usb 3-2: new low speed
USB device using uhci_hcd and address 20
Jun  8 18:07:29 sensor003 kernel: [  412.794806] generic-usb
0003:0764:0501.0013: hiddev0,hidraw0: USB HID v1.10 Device [CPS CP425HG]
on usb-0000:00:10.1-2/input0
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

However, if I manually run the rc.d script, or 'usbhid-ups -a nexups' or
'upsdrvctl start' the connection to the UPS will sometimes succeed.

On successful start, this line appears with the upsd and upsmon messages:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jun  8 17:55:34 sensor003 usbhid-ups[1066]: Startup successful
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

On failed startup, the above line is missing from messages.log. but
(after boot) I do see:
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Jun  8 18:00:48 sensor003 kernel: [    7.816712] usb 3-2: new low speed
USB device using uhci_hcd and address 2
Jun  8 18:00:48 sensor003 kernel: [    8.319356] generic-usb
0003:0764:0501.0001: hiddev0,hidraw0: USB HID v1.10 Device [CPS CP425HG]
on usb-0000:00:10.1-2/input0
Jun  8 18:00:48 sensor003 kernel: [    8.319395] usbcore: registered new
interface driver usbhid
Jun  8 18:00:48 sensor003 kernel: [    8.319400] usbhid: USB HID core driver
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Once nut is successfully started, the cycle of disconnect/reconnect
stops. If I stop nut, the cycle starts again.

Does this seems to indicate the conflict of drivers you mentioned?

What can I do to prevent the core usbhid driver from attaching to this
device?

Thank You for All of Your Hard Work!

johnea