Comment 2 for bug 1329783

the only hint I can give to reproducing this is to keep connecting to existing sessions, and eventually it gets stuck. I get this pretty much every time it sticks, which is perhaps 1 in 10 times? I'm connecting using PuTTY, byobu is configured to launch at login.

Any hints as to how to diagnose what's going on here would be appreciated.

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Using username "[redacted]".
Authenticating with public key "[redacted]"
Attaching: [screen____3604.boot]

Sending variable: ['screen', '-S', u'3604.boot', '-X', 'setenv', 'DISPLAY', 'localhost:10.0']
Sending variable: ['screen', '-S', u'3604.boot', '-X', 'setenv', 'XDG_SESSION_COOKIE', 'ab5e6992b69fe53a40ff4ca20000018c-1409305469.288543-1364373822']