bug#36221: Make GDM *not* restart 504 times on failure

[pelzflorian (Florian Pelz)]

On Mon, Jun 17, 2019 at 11:22:57AM +0200, Ludovic Courtès wrote:
> "pelzflorian (Florian Pelz)" <address@hidden> skribis:
> I think the auto-restart code that’s triggered is in GDM itself, no?
> 

Yes, you are right, I did not expect that.  GDM gets stuck in a
not-quite-endless loop of recreating its seat after Xorg failures, in
gdm-3.28.2/daemon/gdm-local-display-factory.c in “case
GDM_DISPLAY_FINISHED”, until after some 505 repetitions recreation
fails due to “WARNING **: 20:41:01.908: Could not start command
'/gnu/store/2sh9nh36fdh2k6l65q24154c2czq1v57-gdm-3.28.2/libexec/gdm-session-worker':
Too many open files”.  I will investigate further if this happens on
newer GNOME and other distros as well.

Regards,
Florian