Re: sshd freezed on my (@#$%&^*!)

[kamaraju kusumanchi <raju.mailinglists@gmail.com>]

Paul Smith wrote:

> I have an extremely annoying problem I hope someone can help me with, or
> at least make some suggestion.  The environment is complex,
> unfortunately, but...
>
>
> I work remotely from home.  I'm running Debian "sarge" on both the local
> and work systems.
>
> I do a lot of work in Emacs, and rather than start a graphical Emacs and
> DISPLAY through the VPN, which is slow (yes, I know about VNC etc.; I'm
> happy with my current method for various reasons), I start a terminal
> here, ssh to my system at work, and run "emacs -nw" to force TTY-mode
> Emacs.  So basically I run something like this:
>
>  rxvt -e ssh -t <remotehost> emacs -nw
>
> This works fine EXCEPT... every so often it will completely freeze up.
> Nothing I type is seen by the Emacs session.  The only way I can get out
> of this is to kill the sshd on the remote system.  All my other
> sessions/terminals/etc. continue to run fine, by the way, and if I start
> another Emacs that works fine too.  It's nothing like that.
>
>  

Do you have any firewall installed between the your machine (at home) 
and the server? Then that could be the problem. My guess is that ssh 
connection is automatically disabled after certain period of inactivity. 
If this infact is your situation, then try adding

ServerAliveInterval 300

to $HOME/.ssh/config  and see if the problem goes away.

raju

--
Kamaraju S Kusumanchi
Graduate Student, MAE
Cornell University
http://www.people.cornell.edu/pages/kk288/