On Thu, Dec 17, 2009 at 1:06 PM, Andrew Schulman wrote: > Karim, I'm afraid that I don't have much to offer here. A few thoughts: > > After you kill ssh, what does screen -list say?
After I kill ssh, screen -list doesn't do anything. It basically becomes unresponsive as well. > You probably know that when you're connected to a screen session, there are > two screen processes, which communicate with each other through a socket. > When you detach, the foreground screen process exits but the background one > stays around, waiting for a new attach. It seems that when you kill ssh, > somehow data stops flowing to or from the background screen process from > that socket. And that unfortunately is about as deep as my knowledge of > screen goes. > > strace can probably point to the problem, although I don't know if I have > the ability to find it. Others on this list probably can. I would think > of looking at strace output for the following: > > * the background screen process (i.e., the one that stays running when you > detach from it) at the time you kill ssh, especially compared to when you > detach from it normally. > > * the foreground and background screen processes when you try to reattach > after having killed ssh. Again this might be most useful when compared to > a successful reattach after a normal detach. > > If you post or link to this, I'll take a look and maybe I or someone else > can find the problem. I'm sorry, I'm not really sure how to use strace. What I am currently doing is (for the background process): - Run screen, detach from the screen session - Find the PID of the remaining screen process - Attach to it with strace using: strace -o screen_bg -p <PID> - Attach to the screen session, detach, reattach and then run 'exit' in the session After I do this strace has ended and the screen_bg file has no output in it. Is there something I'm doing wrong or is this normal? Thanks, Karim -- Problem reports: http://cygwin.com/problems.html FAQ: http://cygwin.com/faq/ Documentation: http://cygwin.com/docs.html Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple
