[Nut-upsuser] Tripp-lite SMART1050SLT

[Kris Jordan]

Windows 7  Pro x64
Tripp-lite SMART1050SLT (USBHID)
NUT 2.6.4-5

Driver is malfunctioning if the UPS goes on-battery (quick test or 
otherwise).

usbhid-ups - libusb_get_report: libusb0-dll:err [control_msg] sending 
control message failed, win error: A device attached to the system is 
not functioning. (from event log)

libusb_get_interrupt: libusb0-dll:err [_usb_reap_async] reaping request 
failed, win error: A device attached to the system is not functioning.

5D log attached.

Disabling and re-enabling the LibUSB entry in device manager will get it 
back to normal without restarting NUT. Re-plugging the USB cord also works.

Windows built-in driver works reliably, but is very limited.

Unlike my APC UPS's on Windows 7, this UPS + NUT works just fine through 
a sleep cycle.
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