[Pkg-xfce-devel] Bug#865121: LightDM restarts X.org when switching from an unmanaged X11 tty

[Daniel Shahaf]

Hi,

I just upgraded to stretch and I can reproduce the issue reliably.  Here
is the tail of `journalctl -f` as I reproduce the issue:

[[[
Jun 29 14:08:29 tarpaulin org.a11y.atspi.Registry[2691]: XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server ":0"
Jun 29 14:08:29 tarpaulin org.a11y.atspi.Registry[2691]:       after 45 requests (45 known processed) with 0 events remaining.
Jun 29 14:08:29 tarpaulin lightdm[2964]: pam_unix(lightdm-greeter:session): session closed for user lightdm
Jun 29 14:08:29 tarpaulin systemd-logind[688]: Removed session c5.
Jun 29 14:08:29 tarpaulin lightdm[796]: session_get_login1_session_id: assertion 'session != NULL' failed
Jun 29 14:08:29 tarpaulin lightdm[3317]: Error getting user list from org.freedesktop.Accounts: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.Accounts was not provided by any .service files
Jun 29 14:08:29 tarpaulin lightdm[3317]: pam_unix(lightdm-greeter:session): session opened for user lightdm by (uid=0)
Jun 29 14:08:29 tarpaulin systemd-logind[688]: New session c6 of user lightdm.
Jun 29 14:08:29 tarpaulin systemd[1]: Started Session c6 of user lightdm.
Jun 29 14:08:30 tarpaulin org.a11y.atspi.Registry[2691]: SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry

Jun 29 14:08:51 tarpaulin org.a11y.atspi.Registry[2691]: XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server ":0"
Jun 29 14:08:51 tarpaulin org.a11y.atspi.Registry[2691]:       after 29 requests (29 known processed) with 0 events remaining.
Jun 29 14:08:51 tarpaulin lightdm[3317]: pam_unix(lightdm-greeter:session): session closed for user lightdm
Jun 29 14:08:51 tarpaulin systemd-logind[688]: Removed session c6.
Jun 29 14:08:51 tarpaulin lightdm[796]: session_get_login1_session_id: assertion 'session != NULL' failed
Jun 29 14:08:51 tarpaulin lightdm[3348]: Error getting user list from org.freedesktop.Accounts: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.Accounts was not provided by any .service files
Jun 29 14:08:51 tarpaulin lightdm[3348]: pam_unix(lightdm-greeter:session): session opened for user lightdm by (uid=0)
Jun 29 14:08:51 tarpaulin systemd[1]: Started Session c7 of user lightdm.
Jun 29 14:08:51 tarpaulin systemd-logind[688]: New session c7 of user lightdm.
Jun 29 14:08:51 tarpaulin org.a11y.atspi.Registry[2691]: SpiRegistry daemon is running with well-known name - org.a11y.atspi.Registry

Jun 29 14:14:24 tarpaulin org.a11y.atspi.Registry[2691]: XIO:  fatal IO error 11 (Resource temporarily unavailable) on X server ":0"
Jun 29 14:14:24 tarpaulin org.a11y.atspi.Registry[2691]:       after 29 requests (29 known processed) with 0 events remaining.
Jun 29 14:14:24 tarpaulin lightdm[3348]: pam_unix(lightdm-greeter:session): session closed for user lightdm
Jun 29 14:14:24 tarpaulin systemd-logind[688]: Removed session c7.
Jun 29 14:14:24 tarpaulin lightdm[796]: session_get_login1_session_id: assertion 'session != NULL' failed
Jun 29 14:14:24 tarpaulin lightdm[3505]: Error getting user list from org.freedesktop.Accounts: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.Accounts was not provided by any .service files
Jun 29 14:14:24 tarpaulin lightdm[3505]: pam_unix(lightdm-greeter:session): session opened for user lightdm by (uid=0)
Jun 29 14:14:24 tarpaulin systemd-logind[688]: New session c8 of user lightdm.
Jun 29 14:14:24 tarpaulin systemd[1]: Started Session c8 of user lightdm.
]]]

And /var/log/Xorg.0.log:
[[[
[  1079.182] (II) AIGLX: Resuming AIGLX clients after VT switch
[  1079.182] (EE) modeset(0): drmSetMaster failed: Invalid argument
[  1079.182] (EE) modeset(0): failed to set mode: Permission denied
[  1079.182] (EE) 
Fatal server error:
[  1079.182] (EE) EnterVT failed for screen 0
[  1079.182] (EE) 
[  1079.182] (EE) 
Please consult the The X.Org Foundation support 
	 at http://wiki.x.org
 for help. 
[  1079.182] (EE) Please also check the log file at "/var/log/Xorg.0.log" for additional information.
[  1079.182] (EE) 
[  1079.182] (II) AIGLX: Suspending AIGLX clients for VT switch
[  1079.244] (EE) Server terminated with error (1). Closing log file.
]]]

Do let me know if I can help further.

Thanks,

Daniel