Comment 4 for bug 1329783

I'm seeing something similar using the tmux backend:

alistair@cjagpu3:~$ byobu
Attaching: [tmux____1]

Sending variable: ['tmux', 'setenv', '-t', '1', 'DISPLAY', 'localhost:10.0']

At this point it just hangs. My system details are below:

alistair@cjagpu3:~$ byobu --version
byobu version 5.74
tmux 1.8
alistair@cjagpu3:~$ uname -a
Linux cjagpu3 3.13.0-49-generic #83-Ubuntu SMP Fri Apr 10 20:11:33 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux