我的 Kubuntu 启动很慢。需要 1 分 43 秒。
使用systemd-analyze blame结果：
6.859s NetworkManager-wait-online.service
6.541s minidlna.service
6.407s dev-sda5.device
5.564s ModemManager.service
4.479s accounts-daemon.service
4.084s apparmor.service
3.437s grub-common.service
3.407s wpa_supplicant.service
3.296s systemd-tmpfiles-setup.service
2.839s irqbalance.service
2.740s ondemand.service
2.640s systemd-logind.service
2.555s alsa-restore.service
2.551s rsyslog.service
2.551s gpu-manager.service
2.550s systemd-user-sessions.service
2.535s iio-sensor-proxy.service
2.462s thermald.service
2.460s bluetooth.service
2.456s avahi-daemon.service
2.272s NetworkManager.service
1.695s polkitd.service
6.859s NetworkManager-wait-online.service
6.541s minidlna.service
6.407s dev-sda5.device
5.564s ModemManager.service
4.479s accounts-daemon.service
4.084s apparmor.service
3.437s grub-common.service
3.407s wpa_supplicant.service
3.296s systemd-tmpfiles-setup.service
2.839s irqbalance.service
2.740s ondemand.service
2.640s systemd-logind.service
2.555s alsa-restore.service
2.551s rsyslog.service
2.551s gpu-manager.service
2.550s systemd-user-sessions.service
2.535s iio-sensor-proxy.service
2.462s thermald.service
2.460s bluetooth.service
2.456s avahi-daemon.service
2.272s NetworkManager.service
1.695s polkitd.service
1.216s systemd-udevd.service
1.173s keyboard-setup.service
1.054s console-setup.service
750ms preload.service
742ms resolvconf.service
715ms systemd-modules-load.service
687ms packagekit.service
649ms systemd-tmpfiles-setup-dev.service
636ms setvtrgb.service
622ms systemd-remount-fs.service
615ms sys-kernel-debug.mount
614ms dev-mqueue.mount
614ms dev-hugepages.mount
6.859s NetworkManager-wait-online.service
6.541s minidlna.service
6.407s dev-sda5.device
5.564s ModemManager.service
4.479s accounts-daemon.service
4.084s apparmor.service
3.437s grub-common.service
3.407s wpa_supplicant.service
3.296s systemd-tmpfiles-setup.service
2.839s irqbalance.service
2.740s ondemand.service
2.640s systemd-logind.service
2.555s alsa-restore.service
2.551s rsyslog.service
2.551s gpu-manager.service
2.550s systemd-user-sessions.service
2.535s iio-sensor-proxy.service
2.462s thermald.service
2.460s bluetooth.service
2.456s avahi-daemon.service
2.272s NetworkManager.service
1.695s polkitd.service
1.216s systemd-udevd.service
1.173s keyboard-setup.service
1.054s console-setup.service
750ms preload.service
742ms resolvconf.service
715ms systemd-modules-load.service
687ms packagekit.service
649ms systemd-tmpfiles-setup-dev.service
6.859s NetworkManager-wait-online.service
6.541s minidlna.service
6.407s dev-sda5.device
5.564s ModemManager.service
4.479s accounts-daemon.service
4.084s apparmor.service
3.437s grub-common.service
3.407s wpa_supplicant.service
3.296s systemd-tmpfiles-setup.service
2.839s irqbalance.service
2.740s ondemand.service
2.640s systemd-logind.service
2.555s alsa-restore.service
2.551s rsyslog.service
2.551s gpu-manager.service
2.550s systemd-user-sessions.service
2.535s iio-sensor-proxy.service
2.462s thermald.service
2.460s bluetooth.service
2.456s avahi-daemon.service
2.272s NetworkManager.service
1.695s polkitd.service
1.216s systemd-udevd.service
1.173s keyboard-setup.service
1.054s console-setup.service
750ms preload.service
742ms resolvconf.service
715ms systemd-modules-load.service
687ms packagekit.service
649ms systemd-tmpfiles-setup-dev.service
636ms setvtrgb.service
622ms systemd-remount-fs.service
615ms sys-kernel-debug.mount
614ms dev-mqueue.mount
614ms dev-hugepages.mount
558ms apport.service
504ms ufw.service
435ms systemd-journald.service
396ms networking.service
391ms upower.service
314ms kmod-static-nodes.service
301ms systemd-rfkill.service
277ms systemd-backlight@backlight:acpi_video1.service
240ms systemd-backlight@backlight:intel_backlight.service
212ms systemd-sysctl.service
151ms systemd-backlight@backlight:acpi_video0.service
127ms sddm.service
125ms systemd-random-seed.service
118ms systemd-timesyncd.service
116ms systemd-tmpfiles-clean.service
97ms systemd-udev-trigger.service
88ms udisks2.service
82ms dev-disk-by\x2duuid-402730c9\x2dd924\x2d4ff4\x2db1b4\x2d00329db4db9b.swap
77ms systemd-journal-flush.service
77ms snapd.socket
73ms systemd-update-utmp.service
66ms pppd-dns.service
40ms rc-local.service
26ms [email protected]
23ms plymouth-quit.service
17ms plymouth-start.service
13ms plymouth-read-write.service
10ms ureadahead-stop.service
4ms systemd-update-utmp-runlevel.service
4ms rtkit-daemon.service
2ms sys-fs-fuse-connections.mount
请帮帮我....