在Ubuntu 18.04上慢启动
在我的新戴尔笔记本电脑上安装Ubuntu 18.04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 ：
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
有没有人对如何加快启动过程有任何建议？
18.04没有交换分区
当没有交换分区时，Ubuntu 18.04启动速度很慢。 绕过这个编辑/etc/default/grub并使用LINUX搜索该行并在quiet splash后添加noresume 。 它看起来像这样：
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash noresume"
然后保存文件并运行：
sudo update-grub