[Nut-upsuser] megatec_usb[17249]: Reconnecting to UPS failed; will retry later

[Anton Gorlov]

after I starting battery test on my laptop I see in my logs some error 
and ups (IPPON Smart Power Pro 1400. usb interface) isn't monitoring now

[ippon]
	driver = megatec_usb
	port = auto
	desc = "local"


Feb 16 23:22:09 f37 upsd[17150]: Instant command: stlk at 127.0.0.1 did 
test.battery.start on ippon
Feb 16 23:22:12 f37 megatec_usb[17249]: ser_get_line: Device detached? 
(error -1: Unknown error)
Feb 16 23:22:12 f37 megatec_usb[17249]: Reconnecting to UPS failed; will 
retry later...
Feb 16 23:22:12 f37 megatec_usb[17249]: Battery test started.
Feb 16 23:22:12 f37 megatec_usb[17249]: Reconnecting to UPS failed; will 
retry later...
Feb 16 23:22:17 f37 last message repeated 5 times
Feb 16 23:22:17 f37 upsd[17150]: Data for UPS [ippon] is stale - check 
driver
Feb 16 23:22:18 f37 megatec_usb[17249]: Reconnecting to UPS failed; will 
retry later...
Feb 16 23:22:49 f37 last message repeated 31 times