I have similar problem on debian stable jessie using GNOME on my laptop.
After about 7 days suspend/resume system doesn't allow login to existing
gnome session.
I am using to users one home-user and 2nd work-user and switch between
them. Today I go to work today (about 8:31) and after
successuly resuming I was unable to login and graphic login window
freezes completly. Keyboard stops responding.
I have login via ssh and kill all Xorg and restart gdm3.
Here are fragments of my /var/log/messages from this point of time today:
May 24 08:32:15 nvme org.gnome.Shell.desktop[883]: (EE)
May 24 08:32:15 nvme org.gnome.Shell.desktop[883]: Fatal server error:
May 24 08:32:15 nvme org.gnome.Shell.desktop[883]: (EE) wl_registry@2:
error 0: invalid global wl_output (26)
May 24 08:32:15 nvme org.gnome.Shell.desktop[883]: (EE)
May 24 08:32:15 nvme gnome-settings-[997]: failed to find device:
property match 'XRANDR_name'='DP-3' does not exist
May 24 08:32:15 nvme gnome-settings-[997]: failed to find device:
property match 'XRANDR_name'='DP-4' does not exist
May 24 08:32:15 nvme gnome-settings-[997]: xft_settings_set_xresources:
assertion 'dpy != NULL' failed
May 24 08:32:15 nvme org.a11y.atspi.Registry[970]: XIO: fatal IO error
11 (Resource temporarily unavailable) on X server ":1024"
May 24 08:32:15 nvme org.a11y.atspi.Registry[970]: after 21
requests (21 known processed) with 0 events remaining.
May 24 08:32:15 nvme kernel: [237922.295325] traps: gnome-shell[883]
trap int3 ip:7fc75c440261 sp:7ffcd26cec30 error:0
May 24 08:32:15 nvme kernel: [237922.295331] in
libglib-2.0.so.0.5000.3[7fc75c3f0000+112000]
May 24 08:32:15 nvme gnome-session[871]: gnome-session-binary[871]:
WARNING: Application 'org.gnome.Shell.desktop' killed by signal 5
May 24 08:32:15 nvme gnome-settings-[32333]: failed to connect to
device: Failed to connect to missing device
/org/freedesktop/ColorManager/devices/xrandr_Panasonic_Industry_Compan
y_Debian_gdm_117
May 24 08:32:15 nvme gdm3: Child process -867 was already dead.
May 24 08:32:17 nvme NetworkManager[725]: <info> [1527143537.1928]
device (ttyUSB0): state change: unmanaged -> unavailable (reason 'none')
[10 20 0]
Regards, Karol
