Not able to get conmux working

try stopping the service first, then starting:
sudo stop conmux
sudo start conmux

I've tried restarting the service too.

iirc, restart doesn't work properly in conmux because it doesn't support it in the expected way. Instead, you should specifically stop and start it as described above.

Sorry, I meant stopping and starting the service, by 'restart'. So even after doing the above steps I still get the error.

Is it possible that something else has got hold of ttyUSB0, and so you're never getting a serial connection established?

Now I come to think of it, I also remember reading on some wiki page (and no, I can't find it again - just looked) that if that command line in the .cf file didn't work, try an alternative. Anyone else any ideas?

Dave,

No other application got hold of ttyUSB0. After starting conmux service, I get:

$ ps aux | grep ttyUSB0
root 24032 0.0 0.0 1876 500 ? S 12:17 0:00 sh -c sg dialout "cu -l ttyUSB0 -s 115200"
root 24033 0.0 0.0 2232 820 ? S 12:17 0:00 sg dialout cu -l ttyUSB0 -s 115200
uucp 24034 0.0 0.0 2160 788 ? S 12:17 0:00 cu -l ttyUSB0 -s 115200
uucp 24035 0.0 0.0 2160 116 ? S 12:17 0:00 cu -l ttyUSB0 -s 115200
aviksil 30739 0.0 0.0 3372 728 pts/3 S+ 12:57 0:00 grep --color=auto ttyUSB0

I think the issue is that conmux is referring to INET socket instead of serial port for the connection:

$ conmux-console panda01
Conmux::connect aviksil-laptop.in.ibm.com:40231: connect failed - IO::Socket::INET: Bad hostname 'aviksil-laptop.in.ibm.com:40231'

This is why I think, maybe, the alternative config line is needed. Just wish I could find the reference I remember reading a while back. I'll keep digging my end.

Avik, what happens when you have started the service and do:

ps ax | grep conmux

What output do you get?

$ ps ax | grep conmux
 3870 ? Ss 0:00 /usr/bin/perl /usr/sbin/conmux-registry 63000 /var/run/conmux-registry
 3874 ? Ss 0:00 /usr/bin/perl /usr/sbin/conmux /etc/conmux/panda01.cf
23202 pts/3 S+ 0:00 grep --color=auto conmux

12:23 < aviksil> lool: $ ping aviksil-laptop.in.ibm.com
12:23 < aviksil> ping: unknown host aviksil-laptop.in.ibm.com
12:24 < aviksil> lool: $ cat /etc/hosts
12:24 < aviksil> 127.0.0.1Ilocalhost
12:24 < aviksil> 127.0.1.1Iaviksil-laptop
12:24 < aviksil> ...
12:24 < lool> aviksil: right, that's your problem
12:24 < aviksil> lool: $ cat /etc/resolv.conf
12:24 < lool> aviksil: add aviksil-laptop.in.ibm.com after aviksil-laptop in
              your etc/hosts
[...]

12:25 < lool> second line should look like "127.0.1.1 aviksil-laptop
              aviksil-laptop.in.ibm.com"
12:26 < aviksil> lool: done. now it's pinging

12:27 < lool> aviksil: ok; restart the conmux stuff and it should (hopefully)
              work
12:27 < aviksil> lool: $ conmux-console --status panda01
12:27 < aviksil> connected