[plug] GDM hanging, leaving zombies

[Craig Ringer]

> I'm almost certainly wrong here but doesn't WCHAN in ps do that?
> 
> ps ax -o pid,comm:12,wchan:42

That's mighty handy. Must RTFM on `ps` some time...

FYI, the output is:

23707 gdm-binary       wait4
24111 gdm-binary       rt_sigsuspend
24250 gdm-binary       wait4
24415 gdm-binary       wait4
24730 gdm-binary <defu do_exit
26835 gdm-binary <defu do_exit
26999 gdm-binary <defu do_exit
24242 gdm-binary       wait4

(my `ps` didn't like the the length info, so I've dropped it, but the 
output should the same otherwise).

24242 is the parent. The rt_sigsuspend strikes me as a bit weird, but I 
don't know enough about the guts of this stuff to really have an idea 
what's going on.

Craig Ringer


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