[Nut-upsuser] mge-shut driver fails almost after every reboot

[Panagiotis Kritikakos]

Hello Arno,

> Question: have you also tested oldmge-shut?
> Otherwise, that might be interesting to do so and send back the 
> results of these tests...
Yes, I've tried this as well with worse results unfortunately. This 
driver seems to be even more unstable. When it gets able to set 
communication with the UPS (which is not always the case), it usually 
lost it again after a while.

~# /usr/local/libexec/nut/oldmge-shut -DD -a ups-filesrv01
Network UPS Tools - Eaton / SHUT driver 0.70 (2.7.2)
    0.000000     debug level is '2'
    0.000882     entering upsdrv_initups()
    0.001019     entering shut_ups_start()

    0.028445     Communication with UPS established
    0.028457     entering shut_get_descriptor(n 21, 9)
    0.111394     shut_wait_ack(): ACK received
    0.185328     entering shut_get_descriptor(n 01, 18)
    0.273455     shut_wait_ack(): ACK received
    0.423238     Device Descriptor:
bLength:                0x12
bDescriptorType:                                        0x01
bcdUSB:                 0x0110
bDeviceClass:           0x00
bDeviceSubClass:                                        0x00
bDeviceProtocol:        0x00
bMaxPacketSize0:                                        0x08
idVendor:               0x0463
idProduct:              0xffff
bcdDevice:                                              0x0100
iManufacturer:          0x01
iProduct:                                               0x02
iSerialNumber:          0x03
bNumConfigurations:     0x01

    0.423251     entering shut_get_descriptor(n 22, 1538)
    0.525087     shut_wait_ack(): ACK received
    9.705471     Unable to get Report Descriptor


It there a possibility to be an issue of the UPS, or the connection 
between the serial port of the machine and the UPS?

Cheers,
Panagiotis