[Nut-upsuser] APC SC 450 serial connection

[Jim Klimov]

I don't see any mention of a "dumb" driver in sources, so first please
check you've got a useful driver name there.

Also you may have to chown/chmod the devfs sockets to let your packaged
run-time user/group accounts for NUT daemons access them.

On Thu, Apr 21, 2022, 18:47 Philippe LeCavalier via Nut-upsuser <
nut-upsuser at alioth-lists.debian.net> wrote:

> I'm trying to connect my debian box to an apc smart-ups SC 450 with serial
> port only. The debian box has a serial male port. I' got nut-server and
> client installed put dumb as the driver.
>
> Debian 10.7
> nut-server 2.7.4-8
>
>         driver = dumb
>         port = /dev/ttyS0
>         cable = 940-0024E
> 00:02: ttyS0 at I/O 0x3f8 (irq = 4, base_baud = 115200) is a 16550A
>
> I also bought a cable with a FTDI chip which Debian sees as ttyUSB0 but
> that isn't working either.
>
> All I ever get is Driver not connected.
>
> Thanks, Phil
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