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[Bug 1047427] YaST - Remote Administration (VNC) kills Xserver, drops to root console login prompt when using sddm as displaymanager
  • From: bugzilla_noreply@xxxxxxxxxx
  • Date: Fri, 07 Jul 2017 12:19:02 +0000
  • Message-id: <bug-1047427-21960-8Uapq33Hj5@http.bugzilla.opensuse.org/>
http://bugzilla.opensuse.org/show_bug.cgi?id=1047427
http://bugzilla.opensuse.org/show_bug.cgi?id=1047427#c13

--- Comment #13 from Fabian Vogt <fvogt@xxxxxxxx> ---
(In reply to Michal Srb from comment #12)
(In reply to Fabian Vogt from comment #11)
(In reply to Stefan Dirsch from comment #10)
Ok. So the culprit appears to be sddm. Reassigning.

I'm not sure how the VNC setup without session management is supposed to
work and what sddm needs to support.

Currently sddm maps SIGHUP to quit(), so it just quits on rcxdm reload.

Both VNC with and without session management requires that the display
manager communicates with XDMCP. So when you enable either of those modes in
YaST, it will change the DISPLAYMANAGER_REMOTE_ACCESS to "yes" in
/etc/sysconfig/displaymanager, then it will call the
"/usr/lib/X11/display-manager reload" to reload the configuration, which
sends SIGHUP to the display manager.

By the way, sddm doesn't (yet) support XDMCP, so even if SIGHUP wouldn't
kill it and it would reload the configuration, it would not be useful for
VNC.

I see, so RESOLVED WONTFIX? Should I remove the SIGHUP handling in sddm to
avoid killing the session needlessly?

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