Let me start by saying I am not sure this is the correct subforum for my problem so feel free to move this thread around as necessary.
I am a long time Mint user and I've recently bought a new laptop in which I am running Linux Mint 18.3 Cinnamon 64-bit. Everything is working fine except for a quite strange problem. Sometimes all programs in a workspace crash (all other workspaces stay intact). This seems to happen when I use the Alt key for some reason, either with Alt-F4 or Alt-Tab, though I am not completely sure this isn't just coincidental. Lately every time this happens I am checking my /var/log/syslog and I realized that at every crash I get similar warnings. Here are four instances of the relevant log:
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Mar 13 19:49:35 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx dbus[1084]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service'
Mar 13 19:49:35 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx systemd[1]: Starting Hostname Service...
Mar 13 19:49:35 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx dbus[1084]: [system] Successfully activated service 'org.freedesktop.hostname1'
Mar 13 19:49:35 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx systemd[1]: Started Hostname Service.
Mar 13 19:49:35 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx org.gtk.vfs.Daemon[1790]: ** (process:2497): WARNING **: send_infos_cb: No such interface 'org.gtk.vfs.Enumerator' on object at path /org/gtk/vfs/client/enumerator/2 (g-dbus-error-quark, 19)
Mar 13 19:49:35 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx org.gtk.vfs.Daemon[1790]: message repeated 8 times: [ ** (process:2497): WARNING **: send_infos_cb: No such interface 'org.gtk.vfs.Enumerator' on object at path /org/gtk/vfs/client/enumerator/2 (g-dbus-error-quark, 19)]
Mar 13 19:49:35 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx org.gtk.vfs.Daemon[1790]: ** (process:2497): WARNING **: send_done_cb: No such interface 'org.gtk.vfs.Enumerator' on object at path /org/gtk/vfs/client/enumerator/2 (g-dbus-error-quark, 19)
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Mar 14 18:36:47 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx dbus[1058]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service'
Mar 14 18:36:47 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx systemd[1]: Starting Hostname Service...
Mar 14 18:36:47 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx dbus[1058]: [system] Successfully activated service 'org.freedesktop.hostname1'
Mar 14 18:36:47 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx systemd[1]: Started Hostname Service.
Mar 14 18:36:47 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx org.gtk.vfs.Daemon[1768]: ** (process:2456): WARNING **: send_infos_cb: No such interface 'org.gtk.vfs.Enumerator' on object at path /org/gtk/vfs/client/enumerator/2 (g-dbus-error-quark, 19)
Mar 14 18:36:47 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx org.gtk.vfs.Daemon[1768]: message repeated 8 times: [ ** (process:2456): WARNING **: send_infos_cb: No such interface 'org.gtk.vfs.Enumerator' on object at path /org/gtk/vfs/client/enumerator/2 (g-dbus-error-quark, 19)]
Mar 14 18:36:47 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx org.gtk.vfs.Daemon[1768]: ** (process:2456): WARNING **: send_done_cb: No such interface 'org.gtk.vfs.Enumerator' on object at path /org/gtk/vfs/client/enumerator/2 (g-dbus-error-quark, 19)
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Mar 18 13:44:53 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx dbus[1050]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service'
Mar 18 13:44:54 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx systemd[1]: Starting Hostname Service...
Mar 18 13:44:54 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx dbus[1050]: [system] Successfully activated service 'org.freedesktop.hostname1'
Mar 18 13:44:54 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx systemd[1]: Started Hostname Service.
Mar 18 13:44:58 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx org.gtk.vfs.Daemon[1964]: ** (gvfsd:1976): WARNING **: dbus_mount_reply: Error from org.gtk.vfs.Mountable.mount(): Failed to retrieve share list from server: Connection refused
Mar 18 13:44:58 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx org.gtk.vfs.Daemon[1964]: ** (process:12040): WARNING **: Couldn't create directory monitor on smb://x-gnome-default-workgroup/. Error: The specified location is not mounted
Mar 18 13:45:01 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx org.gtk.vfs.Daemon[1964]: ** (gvfsd:1976): WARNING **: dbus_mount_reply: Error from org.gtk.vfs.Mountable.mount(): Failed to retrieve share list from server: Connection refused
Mar 18 13:45:01 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx org.gtk.vfs.Daemon[1964]: ** (process:12038): WARNING **: Couldn't create directory monitor on smb://x-gnome-default-workgroup/. Error: The specified location is not mounted
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Mar 18 13:47:24 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx dbus[1050]: [system] Activating via systemd: service name='org.freedesktop.hostname1' unit='dbus-org.freedesktop.hostname1.service'
Mar 18 13:47:24 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx systemd[1]: Starting Hostname Service...
Mar 18 13:47:24 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx dbus[1050]: [system] Successfully activated service 'org.freedesktop.hostname1'
Mar 18 13:47:24 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx systemd[1]: Started Hostname Service.
Mar 18 13:47:42 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx org.gtk.vfs.Daemon[1964]: ** (process:2496): WARNING **: send_infos_cb: No such interface 'org.gtk.vfs.Enumerator' on object at path /org/gtk/vfs/client/enumerator/3 (g-dbus-error-quark, 19)
Mar 18 13:47:42 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx org.gtk.vfs.Daemon[1964]: message repeated 2 times: [ ** (process:2496): WARNING **: send_infos_cb: No such interface 'org.gtk.vfs.Enumerator' on object at path /org/gtk/vfs/client/enumerator/3 (g-dbus-error-quark, 19)]
Mar 18 13:47:42 gilberto-HP-Pavilion-Power-Laptop-15-cb0xx org.gtk.vfs.Daemon[1964]: ** (process:2496): WARNING **: send_done_cb: No such interface 'org.gtk.vfs.Enumerator' on object at path /org/gtk/vfs/client/enumerator/3 (g-dbus-error-quark, 19)
Would anyone have any idea what is going on?
Many thanks!
Gilberto