[Nut-upsdev] nut vs. ModemManager and device stealing

[Arjen de Korte]

Citeren Charles Lepple <clepple op gmail.com>:

> We have auto-reconnect code for some USB devices (only after the  
> device has been opened successfully, IIRC) and it is a mess. I  
> personally don't think we should add similar complexity to the  
> serial side of NUT, and if we do, it should be disabled by default.

+1

I'm fairly certain that some contact closure UPS devices consider a  
probing sequence as a signal to shutdown the load. You definitely  
don't want that to happen.

I'm also quite sure that based on the VID:PID combination of the  
prospective modem, ModemManager should be able to figure out if a  
device could be a modem or an ordinary USB to serial converter that is  
not known to be a (wireless) modem. Like NUT doesn't probe known  
non-UPS devices, neither should ModemManager.

Best regards, Arjen
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