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Thread: extremely slow boot

  1. #1
    Join Date
    Aug 2005
    Location
    Northern Michigan USA
    Beans
    2,298
    Distro
    Xubuntu 14.04 Trusty Tahr

    extremely slow boot

    My dell desktop booted in less than 30 seconds in 18.04 but now takes over 2 minutes. Once it boots things run at normal speed. I am pasting below the code output. But I don't know how to fix the really slow loading items or if there is a safe way to speed them up. Thank you

    Code:
    sudo systemd-analyze critical-chain
    The time when unit became active or started is printed after the "@" character.
    The time the unit took to start is printed after the "+" character.
    
    graphical.target @30.436s
    └─multi-user.target @30.436s
      └─postfix.service @30.434s +1ms
        └─postfix@-.service @20.734s +9.697s
          └─network-online.target @20.671s
            └─NetworkManager-wait-online.service @14.802s +5.868s
              └─NetworkManager.service @11.005s +3.795s
                └─dbus.service @11.002s
                  └─basic.target @10.967s
                    └─sockets.target @10.967s
                      └─snapd.socket @10.950s +1ms
                        └─sysinit.target @10.811s
                          └─snapd.apparmor.service @10.484s +325ms
                            └─apparmor.service @9.700s +782ms
                              └─local-fs.target @9.699s
                                └─home.mount @9.611s +87ms

  2. #2
    Join Date
    Apr 2008
    Location
    Southern California, USA
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    Hidden!
    Distro
    Ubuntu Development Release

    Re: extremely slow boot

    You might temporarily stop the mail service 'postfix' and reboot to see if it improves.

  3. #3
    Join Date
    Jan 2006
    Location
    Sunny Southend-on-Sea
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    8,275
    Distro
    Kubuntu 20.04 Focal Fossa

    Re: extremely slow boot

    The default timeout when starting or stopping a service is 90 seconds. You could either see which service is stalling at boot and fix it, or make that timeout period shorter.

  4. #4
    Join Date
    Oct 2005
    Location
    Lab, Slovakia
    Beans
    10,299

    Re: extremely slow boot

    Well, why boot? Suspend is much faster.

  5. #5
    Join Date
    Aug 2005
    Location
    Northern Michigan USA
    Beans
    2,298
    Distro
    Xubuntu 14.04 Trusty Tahr

    Re: extremely slow boot

    I eliminated a few services at boot but still takes over 2 min. This same machine in 18.04 booted in <30sec

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