Bonjour, Mon laptop LENOVO (acheté en début d'année 2020) tourne sous cette distribution ( Ubuntu 20.4 ) : https://doc.ubuntu-fr.org/focal Voici l'intégralité du fichier /var/log/dmesg : http://ramix.org/rpm2020/dmesg111 (comporte 1122 lignes) Ce laptop a toujours parfaitement fonctionné mais depuis une semaine il y a des plantages (plusieurs par jour) dont j'ignore la cause. Merci de m'aider à trouver la cause. Ce jour à 8H49 il y a eu un plantage et cet extrait de /var/log/syslog comporte une centaine de lignes (celles relatives au plantage): http://ramix.org/rpm2020/syslog111 dont celles-ci ( avant le plantage) : Oct 6 08:37:30 rpm2020 dbus-daemon[1279]: [session uid=1000 pid=1279] Activating service name='org.freedesktop.Notifications' requested by ':1.626' (uid=1000 pid=36497 comm="/usr/lib/thunderbird/thunderbird " label="unconfined") Oct 6 08:37:30 rpm2020 dbus-daemon[1279]: [session uid=1000 pid=1279] Successfully activated service 'org.freedesktop.Notifications' Oct 6 08:42:03 rpm2020 rtkit-daemon[1098]: Supervising 4 threads of 2 processes of 1 users. Oct 6 08:42:03 rpm2020 rtkit-daemon[1098]: message repeated 3 times: [ Supervising 4 threads of 2 processes of 1 users.] Oct 6 08:42:03 rpm2020 rtkit-daemon[1098]: Successfully made thread 40008 of process 38683 owned by '1000' RT at priority 10. Oct 6 08:42:03 rpm2020 rtkit-daemon[1098]: Supervising 5 threads of 3 processes of 1 users. et celles-ci ( après le plantage) : Oct 6 08:50:39 rpm2020 systemd-modules-load[378]: Inserted module 'lp' Oct 6 08:50:39 rpm2020 systemd-modules-load[378]: Inserted module 'ppdev' Oct 6 08:50:39 rpm2020 systemd-modules-load[378]: Inserted module 'parport_pc' Oct 6 08:50:39 rpm2020 systemd-sysctl[398]: Not setting net/ipv4/conf/all/promote_secondaries (explicit setting exists). Oct 6 08:50:39 rpm2020 systemd-sysctl[398]: Not setting net/ipv4/conf/default/promote_secondaries (explicit setting exists). Oct 6 08:50:39 rpm2020 systemd[1]: Starting Flush Journal to Persistent Storage... Oct 6 08:50:39 rpm2020 systemd[1]: Finished udev Coldplug all Devices. Oct 6 08:50:39 rpm2020 systemd[1]: Starting Helper to synchronize boot up for ifupdown... Oct 6 08:50:39 rpm2020 systemd[1]: Starting Show Plymouth Boot Screen... Oct 6 08:50:39 rpm2020 systemd[1]: Finished Helper to synchronize boot up for ifupdown. Oct 6 08:50:39 rpm2020 systemd[1]: Mounted Mount unit for chromium, revision 1320. Oct 6 08:50:39 rpm2020 systemd[1]: plymouth-start.service: Succeeded. Oct 6 08:50:39 rpm2020 systemd[1]: Started Show Plymouth Boot Screen. Oct 6 08:50:39 rpm2020 systemd[1]: Condition check resulted in Dispatch Password Requests to Console Directory Watch being skipped. Oct 6 08:50:39 rpm2020 systemd[1]: Started Forward Password Requests to Plymouth Directory Watch. Oct 6 08:50:39 rpm2020 systemd[1]: Reached target Local Encrypted Volumes. Oct 6 08:50:39 rpm2020 systemd[1]: Finished Flush Journal to Persistent Storage. Oct 6 08:50:39 rpm2020 systemd[1]: Mounted Mount unit for core18, revision 1885. -- Amicalement Rene Paul Mages (ramix) GnuPG key : 0x9840A6F7 http://www.linux-azur.org/ramix http://wiki.linux-azur.org http://twitter.com/LinuxAzur