[Nut-upsuser] Can't connect to UPS [mustek] (megatec-mustek): No such file or directory

[Vedran Furač]

NUT recently stopped working on my debian. I'm not sure which upgrade
broke it.

ups.conf:

[mustek]
        driver = megatec
        port = /dev/ttyS0
        desc = "mustek ups"


# upsd -DDDD

Network UPS Tools upsd 2.4.1
listen_add: added ::1:3493
listen_add: added 127.0.0.1:3493
setuptcp: try to bind to 127.0.0.1 port 3493
listening on 127.0.0.1 port 3493
setuptcp: try to bind to ::1 port 3493
listening on ::1 port 3493
Can't connect to UPS [mustek] (megatec-mustek): No such file or directory

# strace -f upsd
[...]

connect(6, {sa_family=AF_FILE, path="megatec-mustek"}, 110) = -1 ENOENT
(No such file or directory)

Where is "megatec-mustek" file?

Regards,

Vedran