@Gaara,
Voilà ce que cela a donné:
cmail@cmail-PC:~$ tail -f /var/log/syslog
May 21 10:41:51 cmail-PC kernel: [11442.446686] ata1.00: configured for UDMA/133
May 21 10:41:51 cmail-PC kernel: [11442.446689] ata1.00: retrying FLUSH 0xea Emask 0x4
May 21 10:41:51 cmail-PC kernel: [11442.446798] ata1.00: device reported invalid CHS sector 0
May 21 10:41:51 cmail-PC kernel: [11442.446804] ata1: EH complete
May 21 11:17:01 cmail-PC CRON[5187]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
May 21 11:48:58 cmail-PC ntpd[974]: 212.83.179.156 local addr 192.168.1.31 -> <null>
May 21 12:17:01 cmail-PC CRON[5650]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
May 21 13:17:01 cmail-PC CRON[6085]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
May 21 14:17:01 cmail-PC CRON[6605]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
May 21 15:17:01 cmail-PC CRON[7040]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
May 21 16:17:01 cmail-PC CRON[7727]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
May 21 16:35:26 cmail-PC dhclient[793]: DHCPREQUEST of 192.168.1.31 on enp3s0 to 192.168.1.1 port 67 (xid=0x5eca0b73)
May 21 16:35:26 cmail-PC dhclient[793]: DHCPACK of 192.168.1.31 from 192.168.1.1
May 21 16:35:26 cmail-PC NetworkManager[637]: <info> [1526913326.6772] address 192.168.1.31
May 21 16:35:26 cmail-PC NetworkManager[637]: <info> [1526913326.6776] plen 24 (255.255.255.0)
May 21 16:35:26 cmail-PC NetworkManager[637]: <info> [1526913326.6778] gateway 192.168.1.1
May 21 16:35:26 cmail-PC NetworkManager[637]: <info> [1526913326.6780] server identifier 192.168.1.1
May 21 16:35:26 cmail-PC NetworkManager[637]: <info> [1526913326.6782] lease time 86400
May 21 16:35:26 cmail-PC NetworkManager[637]: <info> [1526913326.6784] hostname 'cmail-PC'
May 21 16:35:26 cmail-PC NetworkManager[637]: <info> [1526913326.6786] nameserver '192.168.1.1'
May 21 16:35:26 cmail-PC NetworkManager[637]: <info> [1526913326.6787] dhcp4 (enp3s0): state changed bound -> bound
May 21 16:35:26 cmail-PC dbus[630]: [system] Activating via systemd: service name='org.freedesktop.nm_dispatcher' unit='dbus-org.freedesktop.nm-dispatcher.service'
May 21 16:35:26 cmail-PC systemd[1]: Starting Network Manager Script Dispatcher Service...
May 21 16:35:26 cmail-PC dbus[630]: [system] Successfully activated service 'org.freedesktop.nm_dispatcher'
May 21 16:35:26 cmail-PC systemd[1]: Started Network Manager Script Dispatcher Service.
May 21 16:35:26 cmail-PC nm-dispatcher: req:1 'dhcp4-change' [enp3s0]: new request (1 scripts)
May 21 16:35:26 cmail-PC nm-dispatcher: req:1 'dhcp4-change' [enp3s0]: start running ordered scripts...
May 21 16:35:26 cmail-PC dhclient[793]: bound to 192.168.1.31 -- renewal in 29986 seconds.
May 21 17:17:01 cmail-PC CRON[8436]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly)
Le freeze est apparu à 17h20 mais n'a pas été détecté dans la commande tail....
