Merci pour la réponse et merci de me rassurer, je commençais à flipper; bon, maintenant, je vais devoir regarder ça de près.
Les 2 premiers checks indiquent des temps très longs ce que je savais déjà et n'ajoutent rien de spécial à ma compréhension.
J'ai fait aussi des checks avec rkhunter et checkrootkit qui m'ont un peu rassuré aussi.
Les commandes de systemd-analyse ne sont pas évidentes quand même à interpréter, je ne sais pas trop quoi en déduire.
J'en donne une copie à tout hasard si ça choque quelqu'un.
[gerardm@Asus ~]$ sudo systemd-analyze time
[sudo] Mot de passe de gerardm :
Startup finished in 4.540s (firmware) + 6.068s (loader) + 1.520s (kernel) + 5.905s (initrd) + 3min 16.487s (userspace) = 3min 34.522s
graphical.target reached after 3min 16.469s in userspace
[gerardm@Asus ~]$ sudo systemd-analyze
Startup finished in 4.540s (firmware) + 6.068s (loader) + 1.520s (kernel) + 5.905s (initrd) + 3min 16.487s (userspace) = 3min 34.522s
graphical.target reached after 3min 16.469s in userspace
[gerardm@Asus ~]$ sudo systemd-analyze blame
2min 46.396s akmods.service
2min 4.488s plymouth-quit-wait.service
48.603s firewalld.service
41.755s sssd.service
31.633s upower.service
11.717s udisks2.service
11.067s dnf-makecache.service
9.476s ModemManager.service
9.112s sssd-kcm.service
8.847s systemd-journal-flush.service
7.642s initrd-switch-root.service
7.187s NetworkManager-wait-online.service
6.916s lvm2-monitor.service
5.979s avahi-daemon.service
5.951s rtkit-daemon.service
5.846s systemd-homed.service
5.845s switcheroo-control.service
5.844s systemd-machined.service
5.843s thermald.service
5.761s dbus-broker.service
5.248s abrtd.service
3.416s libvirtd.service
2.364s systemd-udevd.service
1.841s cups.service
1.578s sysroot.mount
1.513s systemd-fsck@dev-disk-by\x2duuid-bac25b83\x2d2313\x2d45e3\x2d880a\x2dc52381108644.service
1.180s systemd-resolved.service
1.175s polkit.service
1.045s dev-zram0.swap
909ms gssproxy.service
803ms systemd-tmpfiles-setup-dev.service
774ms dracut-initqueue.service
761ms auditd.service
708ms livesys.service
504ms systemd-fsck@dev-disk-by\x2duuid-9EB1\x2dCFC7.service
439ms flatpak-system-helper.service
432ms plymouth-switch-root.service
412ms NetworkManager.service
395ms colord.service
384ms packagekit.service
384ms accounts-daemon.service
343ms systemd-backlight@backlight:nv_backlight.service
282ms systemd-random-seed.service
276ms systemd-tmpfiles-setup.service
270ms user@1000.service
259ms systemd-logind.service
237ms var-lib-nfs-rpc_pipefs.mount
232ms initrd-parse-etc.service
224ms import-state.service
224ms systemd-udev-trigger.service
221ms systemd-sysctl.service
204ms wpa_supplicant.service
177ms nfs-convert.service
145ms ecbd.service
141ms gdm.service
139ms mnt-ata\x2dSlimtype_DVD_A_DS8A9SH_3208703_673312406860.mount
129ms boot.mount
115ms home.mount
111ms chronyd.service
109ms rpc-statd-notify.service
105ms plymouth-read-write.service
105ms swap-create@zram0.service
92ms systemd-tmpfiles-clean.service
90ms boot-efi.mount
89ms systemd-remount-fs.service
74ms systemd-journald.service
73ms systemd-vconsole-setup.service
70ms systemd-update-utmp.service
67ms systemd-user-sessions.service
66ms dev-hugepages.mount
64ms dev-mqueue.mount
63ms sys-kernel-debug.mount
56ms dracut-pre-pivot.service
53ms systemd-userdbd.service
51ms dracut-cmdline.service
42ms kmod-static-nodes.service
41ms systemd-fsck-root.service
39ms geoclue.service
39ms uresourced.service
38ms vboxdrv.service
35ms dracut-shutdown.service
32ms systemd-rfkill.service
29ms systemd-backlight@leds:asus::kbd_backlight.service
28ms dracut-pre-udev.service
25ms initrd-cleanup.service
20ms user-runtime-dir@1000.service
17ms sys-fs-fuse-connections.mount
16ms sys-kernel-config.mount
15ms sshd.service
15ms plymouth-start.service
13ms proc-sys-fs-binfmt_misc.mount
12ms systemd-update-utmp-runlevel.service
11ms systemd-modules-load.service
10ms livesys-late.service
8ms initrd-udevadm-cleanup-db.service
5ms modprobe@configfs.service
5ms modprobe@drm.service
4ms tmp.mount
3ms modprobe@fuse.service
3ms iscsi-shutdown.service
.