Ubuntu – the usual boot time on Ubuntu 16.04 LTS?


I've been using Ubuntu 16.04 LTS (Xenial Xerus) on my Thinkpad E450 for almost a year. My device usually takes over two minutes to boot.

I ran systemd-analyze blame, and the total boot time is 126.741 seconds with the following output:

21.159s dev-sda1.device
14.846s apparmor.service
10.659s snapd.service
8.515s plymouth-read-write.service
6.842s grub-common.service
6.698s NetworkManager-wait-online.service
5.585s networking.service
5.579s systemd-logind.service
5.369s gpu-manager.service
5.110s NetworkManager.service
4.961s bluetooth.service
4.533s ufw.service
4.198s console-setup.service
3.965s systemd-udevd.service
2.724s systemd-tmpfiles-setup.service
2.522s thermald.service
2.304s ModemManager.service
2.254s accounts-daemon.service
2.209s systemd-tmpfiles-setup-dev.service
2.044s binfmt-support.service
1.718s lightdm.service
1.696s keyboard-setup.service
1.251s systemd-modules-load.service

Is this normal?

Best Answer

  • I boot in ~12 sec but boot time bottleneck is usually the disk, with a SSD boot is much faster. So to be fair the comparison has to be done on the same hardware.

    You said you're running on 16.04 but what's your kernel? A new kernel usually boots faster. Check with uname -a and if you're still on 4.4 upgrade your kernel by activating HWE. This is how-to.

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