On Tuesday 02 December 2014 19:44:55 you wrote:
> > On Tuesday 02 December 2014 17:57:06 you wrote:
> >> > Debian Wheezy, Amd64, Nvidia quadro card, drivers from vender, dual
> >> > monitors.
> >> >
> >> > In my .xsession-errors files I can see numerous entries:
> >> > "tdecore] Deleting stale lockfile
> >> > /tmp/tde-pabiVcZK3y/kdesktop_lock_lockfile"
> >> > This crashes my X session, ~ 1 minute uptime, dumps me back to the
> >>
> >> login
> >>
> >> > screen, totaly unworkable.
> >> >
> >> > I have been working around this issue because it only happens on 2
> >> > workstations with the same hardware specs, and drivers from Nvidia.
> >> >
> >> > I remove  '/opt/trinity/bin/kdesktop_lock', I do not use screensaver
> >>
> >> or
> >>
> >> > lock
> >> > desktop, this works..until an update replaces the kdesktop_lock
> >> > binary...this
> >> > will stop eventually.
> >> >
> >> > I read bugs 2222 & 2230, re kdesktop_lock, I could run a backtrace if
> >> > that would help and if someone could give directions on howto.  I will
> >> > file a bug
> >> > with the backtrace.
> >>
> >> Well that's strange.  When you mention it crashing your Xorg session
> >> does
> >> that mean the Xorg server itself crashes (i.e. instantaneous dump back
> >> to
> >> the command line) or that TDE terminates leaving Xorg still running?
> >
> > I do not think the x server crashed,I get dropped to the login prompt
> > pretty
> > quickly, does not seem like enough time to restart the X server also.
>
> You'd be surprised how fast that login prompt shows up after an Xorg
> crash. ;-)  However for now we can proceed under the assumption that it
> isn't one.
>
> >> kdesktop_lock is spawned from kdesktop, so any debugging would likely
> >> involve terminating kdesktop and running kdesktop_lock under gdb from a
> >> terminal.  When I have an answer to the above question I'll get back to
> >> you on how to debug further.
> >
> > killed the 'kdesktop' process, ran 'gdb kdesktop_lock' in a terminal,
> > output
> > below.
> >
> > pabi@tdewheezy:~$ gdb /opt/trinity/bin/kdesktop_lock
> > GNU gdb (GDB) 7.4.1-debian
> > Copyright (C) 2012 Free Software Foundation, Inc.
> > License GPLv3+: GNU GPL version 3 or later
> > <http://gnu.org/licenses/gpl.html>
> > This is free software: you are free to change and redistribute it.
> > There is NO WARRANTY, to the extent permitted by law.  Type "show
> > copying" and "show warranty" for details.
> > This GDB was configured as "x86_64-linux-gnu".
> > For bug reporting instructions, please see:
> > <http://www.gnu.org/software/gdb/bugs/>...
> > Reading symbols from /opt/trinity/bin/kdesktop_lock...Reading symbols
> > from /usr/lib/debug/opt/trinity/bin/kdesktop_lock...done.
> > done.
> > (gdb) q
>
> You'll need to do something like this first...
> export DISPLAY=:0
> then when you are in gdb, to start the program, enter: r <return>
>
> All you did above was load the kdesktop_lock binary into GDB, then exited
> GDB. ;-)
>
> Tim

I should mention i know nothing of these matters..so beginners steps.

Logged into a session, in a terminal:
1. 'ps ax |grep kdesktop'
2. kill -9 <kdesktop PID> 
3. ran 'gdb /opt/trinity/bin/kdsektop_lock'

output: 

pabi@tdewheezy:~$ gdb /opt/trinity/bin/kdesktop_lock
sniped license info

"Reading symbols from /opt/trinity/bin/kdesktop_lock...Reading symbols 
from /usr/lib/debug/opt/trinity/bin/kdesktop_lock...done.
done.
(gdb) r
Starting program: /opt/trinity/bin/kdesktop_lock
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[tdecore] Deleting stale lockfile /tmp/tde-pabi/kdesktop_lock_lockfile
[tdecore] Deleting stale lockfile /tmp/tde-pabi/kdesktop_lock_lockfile
[New Thread 0x7fffec0b9700 (LWP 19047)]
[kdesktop_lock] Warning: unable to create control 
socket '/tmp/tdesocket-global/kdesktoplockcontrol-0'.  Interactive logon 
modules may not function properly.
[Thread 0x7fffec0b9700 (LWP 19047) exited]
X Error: BadAccess (attempt to access private resource denied) 10
  Major opcode:  2
  Minor opcode:  0
  Resource id:  0x1a00054
[Inferior 1 (process 19042) exited normally]
(gdb) q"


-- 
Peace,

Greg