During Ubuntu boot up it has started pausing about a minute displaying nothing but "Ubuntu 24.04" above four colored (and changing) dots. This is near the upper left-hand corner of the screen. Then it continues normally with the log on screen. I cannot identify any change that caused this.
Here is the requested output from systemd-analyze blame. Sorry about the lack of \n.
1min 984ms NetworkManager.service
1min 774ms snapd.seeded.service
1min 657ms snapd.service
1min 644ms gpu-manager.service
12.396s apt-daily-upgrade.service
8.429s NetworkManager-wait-online.service
3.144s plymouth-quit-wait.service
1.066s fwupd.service
464ms [email protected]
222ms dev-nvme0n1p2.device
177ms apport.service
149ms [email protected]
142ms cups.service
133ms dev-loop7.device
127ms dev-loop2.device
125ms dev-loop1.device
124ms networkd-dispatcher.service
122ms dev-loop5.device
116ms dev-loop6.device
114ms dev-loop4.device
112ms udisks2.service
102ms gnome-remote-desktop.service
96ms com.system76.PowerDaemon.service
95ms dev-loop3.device
89ms systemd-udev-trigger.service
83ms dev-loop10.device
83ms dev-loop0.device
81ms upower.service
78ms rsyslog.service
75ms dev-loop27.device
74ms dev-loop29.device
73ms systemd-journal-flush.service
73ms polkit.service
72ms dev-loop28.device
70ms dev-loop30.device
69ms dev-loop31.device
69ms dev-loop26.device
68ms dev-loop24.device
68ms accounts-daemon.service
68ms dev-loop23.device
67ms dev-loop32.device
67ms dev-loop20.device
67ms dev-loop25.device
66ms dev-loop22.device
65ms dev-loop21.device
65ms dev-loop33.device
65ms dev-loop19.device
64ms dev-loop17.device
64ms dev-loop18.device
63ms dev-loop15.device
63ms dev-loop16.device
62ms dev-loop9.device
62ms systemd-resolved.service
61ms dev-loop12.device
60ms dev-loop13.device
59ms dev-loop14.device
59ms dev-loop11.device
59ms dev-loop8.device
58ms update-notifier-download.service
58ms systemd-journald.service
53ms systemd-udevd.service
52ms lm-sensors.service
51ms systemd-logind.service
50ms ModemManager.service
47ms gdm.service
45ms avahi-daemon.service
44ms bluetooth.service
43ms fwupd-refresh.service
42ms systemd-timesyncd.service
42ms snapd.apparmor.service
42ms apparmor.service
42ms systemd-random-seed.service
41ms systemd-oomd.service
39ms dbus.service
38ms systemd-sysctl.service
36ms systemd-tmpfiles-clean.service
36ms snap-bare-5.mount
35ms grub-common.service
35ms snap-chromium-2873.mount
35ms snap-chromium-2890.mount
34ms snap-core18-2823.mount
34ms snap-core18-2829.mount
33ms snap-core20-2264.mount
32ms snap-core20-2318.mount
32ms snap-core22-1122.mount
31ms wpa_supplicant.service
31ms snap-core22-1380.mount
30ms systemd-backlight@backlight:acpi_video0.service
30ms plymouth-start.service
30ms snap-cups-1047.mount
29ms snap-cups-1052.mount
29ms snap-firefox-4424.mount
28ms switcheroo-control.service
28ms snap-firefox-4451.mount
27ms snap-firmware\x2dupdater-121.mount
26ms keyboard-setup.service
26ms snap-firmware\x2dupdater-127.mount
26ms systemd-fsck@dev-disk-by\x2duuid-3855\x2dA8D4.service
26ms snap-freecad-759.mount
25ms thermald.service
25ms snap-freecad-908.mount
24ms snap-gnome\x2d3\x2d28\x2d1804-198.mount
24ms pulseaudio-enable-autospawn.service
24ms colord.service
23ms snap-gnome\x2d3\x2d38\x2d2004-143.mount
23ms alsa-restore.service
23ms snap-gnome\x2d42\x2d2204-172.mount
22ms snap-gnome\x2d42\x2d2204-176.mount
21ms snap-gtk\x2dcommon\x2dthemes-1535.mount
21ms grub-initrd-fallback.service
21ms snap-kde\x2dframeworks\x2d5\x2d99\x2dqt\x2d5\x2d15\x2d7\x2dcore20-7.mount
20ms snap-shotcut-1389.mount
20ms snap-shotcut-1447.mount
20ms systemd-tmpfiles-setup.service
20ms snapd.socket
19ms snap-snap\x2dstore-1134.mount
19ms systemd-modules-load.service
18ms snap-snap\x2dstore-1147.mount
18ms e2scrub_reap.service
18ms systemd-backlight@leds:system76_acpi::kbd_backlight.service
17ms snap-snapd-21465.mount
17ms kerneloops.service
17ms snap-snapd-21759.mount
16ms snap-snapd\x2ddesktop\x2dintegration-157.mount
16ms snap-snapd\x2ddesktop\x2dintegration-83.mount
15ms snap-thunderbird-480.mount
14ms systemd-remount-fs.service
14ms [email protected]
14ms snap-thunderbird-482.mount
14ms snap-yubioath\x2ddesktop-13.mount
12ms plymouth-read-write.service
12ms var-snap-firefox-common-host\x2dhunspell.mount
11ms dev-disk-by\x2duuid-5a2e642d\x2d3593\x2d4a24\x2da2fd\x2def8dd9870bc1.swap
10ms systemd-binfmt.service
10ms dev-hugepages.mount
10ms dev-mqueue.mount
9ms sys-kernel-debug.mount
9ms atd.service
9ms sys-kernel-tracing.mount
9ms systemd-tmpfiles-setup-dev-early.service
8ms nvidia-persistenced.service
8ms rtkit-daemon.service
8ms kmod-static-nodes.service
8ms [email protected]
7ms systemd-user-sessions.service
7ms [email protected]
6ms [email protected]
6ms proc-sys-fs-binfmt_misc.mount
6ms boot-efi.mount
6ms openvpn.service
5ms systemd-rfkill.service
5ms systemd-tmpfiles-setup-dev.service
5ms systemd-update-utmp.service
4ms systemd-update-utmp-runlevel.service
3ms console-setup.service
3ms modprobe@efi_pstore.service
3ms sys-fs-fuse-connections.mount
3ms ufw.service
3ms sys-kernel-config.mount
2ms [email protected]
2ms modprobe@dm_mod.service
1ms setvtrgb.service
909us postfix.service
systemd-analyze blame.