Adding the systemd list. I had this working a few systemd releases ago, but I 
now get the same behaviour as you are seeing.

Op 22 mrt. 2012, om 08:32 heeft Ken Restivo het volgende geschreven:

> Systemd wipes out screen sessions, thus making screen unusable.
> 
> I've been thrashing around for hours, following these instructions and 
> discussions:
> 
> http://lists.freedesktop.org/archives/systemd-devel/2011-May/002416.html
> https://bugzilla.redhat.com/show_bug.cgi?id=612712
> http://0pointer.de/blog/projects/systemd.html
> http://en.gentoo-wiki.com/wiki/Systemd#PAM_support:_su.2C_sudo.2C_screen...
> http://wiki.debian.org/systemd
> 
> I tried adding this line as suggested, to almost every file in /etc/pam.d, 
> but it seems to silently not have any effect at all:
> 
>> session required pam_systemd.so create-session=1 kill-user=0 kill-session=0
> 
> It appears not to be able to be forced to NOT wipe out screen sessions.
> 
> I tried turning debug logging on for systemd, and it seems that systemd is 
> mounting the cgroups, and is compiled to support PAM:
> 
>> [    1.094966] systemd[1]: systemd 40 running in system mode. (+PAM +LIBWRAP 
>> -AUDIT  -SELINUX +SYSVINIT -LIBCRYPTSETUP; angstrom)
> 
> The pam_systemd.so module is also present.
> 
> I looked at the source to 
> setup-scripts/build/tmp-angstrom_2010_x-eglibc/work/armv7a-angstrom-linux-gnueabi/systemd-git-r17/packages-split/systemd-dbg/usr/src/debug/systemd-git-r17/git/src/login/pam-module.c,
>  and the args seem to be correct.
> 
> This is on an image built from bitbake on 2/14/12, a simple cloud9-image.
> 
> I do get a lot of these, but it might just be noise, though I have to wonder 
> if important clues might be missed because of it:
> 
>> [    1.968177] systemd[1]: Failed to open syslog for logging: Invalid 
>> argument
> 
> Other than that, I'm stumped.
> 
> At the moment the screen session gets destroyed, this appears in dmesg:
> 
>> [  162.755125] systemd[1]: 
>> dropbear@192.168.42.4:22-192.168.42.177:40110.service stopping timed out. 
>> Killing.
>> [  162.767310] systemd[1]: dropbear.socket: One connection closed, 1 left.
>> [  162.774914] systemd[1]: 
>> dropbear@192.168.42.4:22-192.168.42.177:40110.service ch anged stop-sigterm 
>> -> failed
>> [  162.786069] systemd[1]: Unit 
>> dropbear@192.168.42.4:22-192.168.42.177:40110.service entered failed state.
>> [  162.796574] systemd[1]: Failed to open syslog for logging: Invalid 
>> argument
>> [  162.804301] systemd[1]: Running GC...
>> [  170.536606] systemd[1]: Received SIGCHLD from PID 284 (screen).
>> [  170.545864] systemd[1]: Received SIGCHLD from PID 272 (dropbear).
>> [  170.553801] systemd[1]: Got SIGCHLD for process 272 (dropbear)
>> [  170.560119] systemd[1]: Child 272 died (code=exited, status=0/SUCCESS)
>> [  170.568124] systemd[1]: Child 272 belongs to 
>> dropbear@192.168.42.4:22-192.168.42.177:40111.service
>> [  170.577902] systemd[1]: 
>> dropbear@192.168.42.4:22-192.168.42.177:40111.service: main process exited, 
>> code=exited, status=0
>> [  170.594275] systemd[1]: 
>> dropbear@192.168.42.4:22-192.168.42.177:40111.service changed running -> 
>> stop-sigterm
>> [  170.610754] systemd[1]: Failed to open syslog for logging: Invalid 
>> argument
>> [  170.618362] systemd[1]: Got SIGCHLD for process 284 (screen)
>> [  170.625516] systemd[1]: Child 284 died (code=exited, status=0/SUCCESS)
>> [  170.633041] systemd[1]: Got SIGCHLD for process 285 (screen)
>> [  170.639182] systemd[1]: Child 285 died (code=exited, status=1/FAILURE)
>> [  170.647759] systemd[1]: Got SIGCHLD for process 287 (top)
>> [  170.654115] systemd[1]: Child 287 died (code=exited, status=129/n/a)
>> [  170.661329] systemd[1]: Got SIGCHLD for process 286 (sh)
>> [  170.667099] systemd[1]: Child 286 died (code=killed, status=1/HUP)
>> [  170.674291] systemd[1]: Received SIGCHLD from PID 286 (n/a).
>> [  170.680937] systemd[1]: Accepted connection on private bus.
>> [  170.688320] systemd[1]: Got D-Bus request: 
>> org.freedesktop.systemd1.Agent.Released() on /org/freedesktop/systemd1/agent
>> [  170.701646] systemd[1]: Got D-Bus request: 
>> org.freedesktop.DBus.Local.Disconnect ed() on /org/freedesktop/DBus/Local
>> 
> 
> Is there some magic incantation required to make systemd stop breaking screen?
> 
> Thanks.
> 
> -ken
> 
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