在我的新Dell笔记本上安装了Ubuntu 18.04之后，我想知道是否有可能加快启动过程。以下是一些基本信息：
systemd-analyze:
有人对如何加快启动过程有什么建议吗？
systemd-analyze:
Startup finished in 3.879s (kernel) + 28.444s (userspace) = 32.323s
graphical.target reached after 28.001s in userspace
systemd-analyze blame:
11.425s dev-sda3.device
10.386s plymouth-quit-wait.service
8.797s plymouth-start.service
6.751s dev-loop1.device
6.719s dev-loop2.device
6.599s dev-loop3.device
6.574s dev-loop4.device
6.565s NetworkManager-wait-online.service
6.551s dev-loop5.device
6.524s dev-loop7.device
6.499s dev-loop8.device
6.277s fwupd.service
6.075s snap-gnome\x2dcalculator-154.mount
5.736s snap-gnome\x2dcharacters-86.mount
5.687s snap-gnome\x2d3\x2d26\x2d1604-64.mount
5.656s snap-gnome\x2dsystem\x2dmonitor-39.mount
5.621s snap-gnome\x2dlogs-31.mount
5.245s dev-loop0.device
2.778s udisks2.service
2.604s networkd-dispatcher.service
2.529s grub-common.service
2.457s snapd.service
2.187s gpu-manager.service
2.057s accounts-daemon.service
2.052s ModemManager.service
2.017s snap-gnome\x2dsystem\x2dmonitor-36.mount
1.946s apport.service
1.681s systemd-udevd.service
1.641s bolt.service
1.618s dev-loop11.device
1.574s dev-loop6.device
1.573s dev-loop12.device
1.552s dev-loop9.device
1.543s keyboard-setup.service
1.508s dev-loop10.device
1.403s NetworkManager.service
1.385s bluetooth.service
1.379s snap-gnome\x2dcalculator-167.mount
1.370s rsyslog.service
1.206s systemd-tmpfiles-setup-dev.service
929ms thermald.service
843ms systemd-remount-fs.service
835ms systemd-journald.service
813ms dev-mqueue.mount
810ms dev-hugepages.mount
802ms sys-kernel-debug.mount
756ms systemd-sysctl.service
706ms snap-gnome\x2d3\x2d26\x2d1604-59.mount
690ms systemd-fsck@dev-disk-by\x2duuid-408C\x2d72C2.service
687ms snap-gnome\x2dcharacters-69.mount
660ms snap-gnome\x2dlogs-25.mount
648ms polkit.service
644ms snap-spotify-13.mount
635ms systemd-modules-load.service
和 systemd-analyze critical-chain：
graphical.target @28.001s
└─multi-user.target @28.000s
**└─kerneloops.service @24.171s +21ms**
└─network-online.target @24.169s
**└─NetworkManager-wait-online.service @17.603s +6.565s
└─NetworkManager.service @16.197s +1.403s**
└─dbus.service @15.305s
└─basic.target @14.841s
└─sockets.target @14.841s
**└─snapd.socket @14.799s +41ms**
└─sysinit.target @14.790s
**└─systemd-timesyncd.service @14.580s +210ms
└─systemd-tmpfiles-setup.service @14.181s +366ms**
└─local-fs.target @14.177s
└─run-user-120.mount @18.907s
└─swap.target @13.501s
**└─dev-disk-by\x2duuid-91bef5fa\x2dfe6b\x2d441f \x2d92c3\x2dcf857dacef7e.swap @13.355s +145ms**
└─dev-disk-by\x2duuid-91bef5fa\x2dfe6b\x2d441f\x2d92c3\x2dcf857dacef7e.device @13.354s
有人对如何加快启动过程有什么建议吗？