May be this another possible reason then. http://www4.informatik.uni-erlangen.de/~jnweiger/screen-faq.html
Q: If I leave screen too long detached it mysteriously disappears, although I feel that this is not a flaw in the program but rather my system being 'cleaned' of stray jobs. A: Check the output of "screen -ls". If there is no session, your shells inside screen possibly have set an autologout. This kills the processes after a certain time of inactivity. Such a feature is often installed per default in the users account, as it helps to keep intruders off on terminals where you forgot to log out. But it is not a good idea for shells running under screen. http://www.ivorde.ro/Secure_Unix_shell_account_with_auto_logout_after_seconds_of_inactivity__Idle_TMOUT-42.html Regards Pandu On Sat, Dec 19, 2009 at 1:38 AM, Leinartas, Michael <michael.leinar...@orbitz.com> wrote: > My screen sockets are actually in /var/run/screen/S-<user>/ > > I can't find anything that would be clearing it (checked crons, logrotate, > etc). When these screens disappear, both the SCREEN process and the socket > are gone. It seems almost like screen shuts itself down for some reason. If > it were shutting down uncleanly (say a crash or a kill -9) it'd leave behind > a socket, right? > > > -----Original Message----- > From: Pandurangan R S [mailto:pandurangan....@gmail.com] > Sent: Wednesday, December 16, 2009 9:29 PM > To: Leinartas, Michael > Cc: screen-users@gnu.org > Subject: Re: Detached screens disappear - help debugging? > >>> After detaching, my screen session will disappear some time after. > > Is the screen process dead (check using ps) or you are not just able > to attach to the screen. > > If the screen process is alive and "screen -ls" tells "No sockets found" > then it may the case that your sockdir (usually /tmp/uscreens/<user>) > is getting cleaned up! > > My admin was wiping off the entire /tmp when diskspace was low and > this was causing me a similar issue. > > Regards > Pandu > > On Wed, Dec 16, 2009 at 11:06 AM, Leinartas, Michael > <michael.leinar...@orbitz.com> wrote: >> I've had a problem with screen on my home computer for quite some time >> that's been driving me crazy. After detaching, my screen session will >> disappear some time after. Sometimes an hour later it's there, sometimes >> it's not. It's nearly always gone if I leave it overnight. I never have >> any problems if I'm attached - if I say, leave a screen session on the >> console open for 3 days, it'll be fine. It also doesn't seem to matter how >> many terminals are in the session or whether they're idle at a prompt or >> running something. >> >> So where can I start figuring out what's causing these sessions to die? It >> doesn't seem to be anything obvious like an oom killer (nothing in dmesg). >> I've checked the system crons in /etc/cron.* and it doesn't look like >> there's anything wiping stuff in /var/run or anything. >> >> Some system details incase it matters to anyone: >> Screen 4.0.3 >> Debian squeeze (same problem when I was on lenny) amd64 arch >> linux-2.6.32 (vanilla) >> AMD quad core (Phenom II) >> 4gb ram >> >> >> I'd appreciate any help on this because it's driving me nuts. >> >> michael >> >> _______________________________________________ >> screen-users mailing list >> screen-users@gnu.org >> http://lists.gnu.org/mailman/listinfo/screen-users >> >> > _______________________________________________ screen-users mailing list screen-users@gnu.org http://lists.gnu.org/mailman/listinfo/screen-users
