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taosheng

Démarrage lent - Temps chargement kernel long

Bonjour,

Depuis quelques jours, le démarrage de mon PC est lent. J'ai l'impression que cela vient du temps de chargement du noyau, mais je ne sais pas si c'est effectivement le cas, et si oui, comment régler le problème. Pourriez-vous m'aider ?

Voici les infos dont je dispose :

systemd-analyze time
Startup finished in 28.357s (firmware) + 1.247s (loader) + 1min 8.059s (kernel) + 11.440s (userspace) = 1min 49.104s 
graphical.target reached after 11.434s in userspace.

systemd-analyze critical-chain
The time when unit became active or started is printed after the "@" character.
The time the unit took to start is printed after the "+" character.

graphical.target @11.434s
└─multi-user.target @11.434s
  └─kerneloops.service @11.423s +10ms
    └─network-online.target @11.413s
      └─NetworkManager-wait-online.service @3.380s +8.032s
        └─NetworkManager.service @2.125s +1.230s
          └─dbus.service @1.956s +167ms
            └─basic.target @1.952s
              └─sockets.target @1.952s
                └─cups.socket @2.262s
                  └─sysinit.target @1.927s
                    └─snapd.apparmor.service @1.749s +177ms
                      └─apparmor.service @1.681s +67ms
                        └─local-fs.target @1.679s
                          └─run-snapd-ns-snapd\x2ddesktop\x2dintegration.mnt.mount @4.210s
                            └─run-snapd-ns.mount @3.890s
                              └─local-fs-pre.target @224ms
                                └─systemd-tmpfiles-setup-dev.service @218ms +6ms
                                  └─systemd-tmpfiles-setup-dev-early.service @199ms +12ms
                                    └─kmod-static-nodes.service @190ms +6ms
                                      └─systemd-journald.socket @185ms
                                        └─system.slice @169ms
                                          └─-.slice @169ms

systemd-analyze blame
8.032s NetworkManager-wait-online.service
4.894s apt-daily.service
3.000s plymouth-quit-wait.service
1.900s fwupd.service
1.601s logrotate.service
1.494s mysql.service
1.317s snapd.seeded.service
1.230s NetworkManager.service
1.197s snapd.service
 839ms apt-daily-upgrade.service
 483ms boot-efi.mount
 387ms apport.service
 310ms dpkg-db-backup.service
 307ms man-db.service
 281ms udisks2.service
 276ms dev-nvme0n1p2.device
 253ms accounts-daemon.service
 217ms gnome-remote-desktop.service
 202ms power-profiles-daemon.service
 191ms polkit.service
 185ms cups.service
 180ms systemd-journal-flush.service
 177ms snapd.apparmor.service
 171ms avahi-daemon.service
 167ms dbus.service
 164ms dev-loop3.device
 150ms dev-loop1.device
 150ms switcheroo-control.service
 149ms dev-loop4.device
 147ms grub-common.service
 140ms user@1000.service
 137ms systemd-udev-trigger.service
 121ms dev-loop5.device
 120ms dev-loop7.device
 116ms rsyslog.service
 111ms dev-loop6.device
 100ms ModemManager.service
  97ms thermald.service
  94ms dev-loop34.device
  91ms systemd-resolved.service
  89ms plymouth-start.service
  88ms dev-loop16.device
  87ms gpu-manager.service
  86ms apache2.service
  86ms apport-autoreport.service
  83ms dev-loop25.device
  73ms systemd-journald.service
  72ms grub-initrd-fallback.service
  69ms upower.service
  68ms dev-loop0.device
  68ms systemd-logind.service
  67ms apparmor.service
  66ms phpsessionclean.service
  66ms systemd-oomd.service
  65ms dev-loop13.device
  61ms gdm.service
  60ms lm-sensors.service
  60ms dev-loop22.device
  60ms dev-loop29.device
  56ms dev-loop27.device
  55ms dev-loop23.device
  55ms dev-loop30.device
  55ms dev-loop19.device
  55ms dev-loop21.device
  55ms dev-loop28.device
  54ms dev-loop24.device
  54ms dev-loop26.device
  54ms systemd-timesyncd.service
  54ms dev-loop18.device
  54ms dev-loop20.device
  54ms dev-loop15.device
  54ms dev-loop17.device
  53ms dev-loop14.device
  53ms dev-loop12.device
  53ms dev-loop11.device
  52ms dev-loop10.device
  52ms dev-loop9.device
  52ms dev-loop31.device
  52ms dev-loop8.device
  51ms dev-loop33.device
  50ms dev-loop32.device
  49ms systemd-udevd.service
  48ms update-notifier-download.service
  46ms systemd-random-seed.service
  46ms systemd-sysctl.service
  40ms snap-bare-5.mount
  39ms snap-codium-448.mount
  38ms snap-core-16928.mount
  38ms snap-core-17200.mount
  37ms snap-core18-2846.mount
  36ms snap-core18-2855.mount
  35ms snap-core20-2434.mount
  35ms colord.service
  34ms wpa_supplicant.service
  34ms snap-core20-2496.mount
  34ms snap-core22-1722.mount
  33ms systemd-tmpfiles-setup.service
  33ms snap-core22-1748.mount
  32ms snap-firefox-5836.mount
  32ms snap-firefox-5889.mount
  31ms e2scrub_reap.service
  31ms snap-firmware\x2dupdater-147.mount
  30ms snap-firmware\x2dupdater-167.mount
  30ms run-rpc_pipefs.mount
  30ms snap-gimp-436.mount
  29ms snap-gimp-484.mount
  29ms keyboard-setup.service
  26ms snap-gnome\x2d3\x2d34\x2d1804-93.mount
  25ms snap-gnome\x2d3\x2d38\x2d2004-119.mount
  25ms snap-gnome\x2d3\x2d38\x2d2004-143.mount
  24ms snap-gnome\x2d42\x2d2204-176.mount
  24ms snap-gnome\x2d42\x2d2204-202.mount
  23ms fwupd-refresh.service
  23ms snap-gtk2\x2dcommon\x2dthemes-13.mount
  22ms snap-gtk\x2dcommon\x2dthemes-1535.mount
  22ms snapd.socket
  22ms snap-pdfarranger-33.mount
  21ms snap-snap\x2dstore-1244.mount
  21ms systemd-modules-load.service
  20ms systemd-remount-fs.service
  20ms snap-snap\x2dstore-1248.mount
  20ms snap-snapd-23545.mount
  19ms snap-snapd-23771.mount
  18ms snap-snapd\x2ddesktop\x2dintegration-247.mount
  18ms systemd-fsck@dev-disk-by\x2duuid-E86D\x2dCE9B.service
  18ms snap-snapd\x2ddesktop\x2dintegration-253.mount
  17ms snap-thunderbird-663.mount
  16ms snap-thunderbird-682.mount
  16ms snap-vlc-3721.mount
  15ms snap-vlc-3777.mount
  14ms var-snap-firefox-common-host\x2dhunspell.mount
  14ms rpcbind.service
  14ms plymouth-read-write.service
  13ms systemd-binfmt.service
  12ms systemd-tmpfiles-setup-dev-early.service
  10ms dev-loop36.device
  10ms systemd-tmpfiles-clean.service
  10ms kerneloops.service
  10ms rtkit-daemon.service
   9ms dev-hugepages.mount
   9ms snap-curl-2283.mount
   9ms dev-mqueue.mount
   8ms sys-kernel-debug.mount
   8ms snap-codium-450.mount
   8ms snap-core24-739.mount
   8ms sys-kernel-tracing.mount
   7ms proc-sys-fs-binfmt_misc.mount
   7ms alsa-restore.service
   6ms systemd-update-utmp.service
   6ms systemd-tmpfiles-setup-dev.service
   6ms kmod-static-nodes.service
   5ms user-runtime-dir@1000.service
   5ms modprobe@configfs.service
   5ms modprobe@drm.service
   5ms systemd-update-utmp-runlevel.service
   4ms systemd-user-sessions.service
   4ms systemd-rfkill.service
   4ms modprobe@fuse.service
   4ms console-setup.service
   4ms rpc-statd-notify.service
   3ms swapfile.swap
   3ms modprobe@efi_pstore.service
   3ms ufw.service
   3ms modprobe@loop.service
   2ms openvpn.service
   2ms sys-fs-fuse-connections.mount
   2ms sys-kernel-config.mount
   1ms modprobe@dm_mod.service
   1ms setvtrgb.service

ls -l /var/crash
total 6028
-rw-r----- 1 gdm      whoopsie 6164881 mars   8 02:49 _usr_bin_gnome-shell.128.crash
-rw-r--r-- 1 gdm      whoopsie       0 mars   8 02:49 _usr_bin_gnome-shell.128.upload
-rw------- 1 whoopsie whoopsie      37 mars   8 02:49 _usr_bin_gnome-shell.128.uploaded

dpkg -l | grep -v ^ii
Souhait=inconnU/Installé/suppRimé/Purgé/H=à garder
| État=Non/Installé/fichier-Config/dépaqUeté/échec-conFig/H=semi-installé/W=attend-traitement-déclenchements
|/ Err?=(aucune)/besoin Réinstallation (État,Err: majuscule=mauvais)
||/ Nom                                           Version                                       Architecture Description
+++-=============================================-=============================================-============-================================================================================

Merci d'avance pour votre aide

lann

Re : Démarrage lent - Temps chargement kernel long

Effectivement le noyau prend plus d'une minute à démarrer

 1min 8.059s (kernel)

ça serait intéressant de récupérer les logs de démarrage :

sudo dmesg

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