Slow boot on 18.04.2

Support & Help Requests
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Hi I noticed that Ubuntu MATE 18.04.2 is booting rather slow and also takes a while to shut down too. Is anyone else experiencing this? And what could be causing this? After I installed all the updates and apps I wanted after initial install of the OS it started being slower. I don't have that many apps either and my laptop has plenty of processing power and plenty of RAM. Here's my laptop specs:
https://support.hp.com/us-en/document/c05333566

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systemd-analyze blame

will list how much time services take to start ... maybe you can find which one is slow.

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I used that command (systemd-analyze blame) to look at what the heck was keeping galileo's mate 18.04 from booting as fast as newton's. At first I thought that fstrim was causing a bottle-neck but the entry immediately before was the culprit - NetworkManager-wait-online.service

See - https://askubuntu.com/questions/1018576/what-does-networkmanager-wait-online-service-do

sudo systemctl disable NetworkManager-wait-online.service cut what felt like 15 seconds off galileo's boot time. It shuts down much faster also.

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Thanks for the excellent tip.

It knocked about 15 secs off my boot time.

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Ok thanks I'll try that

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Thanks for the info, link and command. I'll give it a shot!

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I also had a PCI bus error on boot up and shutdown and it was making it slow so I found a solution for that and now I don't have any errors and my boot and shutdown are a lot faster. Thanks y'all for the tips! If y'all are having that PCI bus error too then see the post I made about it in Support and Help Requests.