[SOLVED] Ubuntu 20.04 Slow boot

[tuxxtuta]

Hey there,

I had upgraded (clean install ) from 19.04 to 20.04 the last week and i have since then very slow times at boot (almost 2 minutes)

I was seeing the check disks at the loading screen first and i disabled it like this

fsck.mode=skip grub.cfg just before quiet splash


I don't know if you need something from my hardware specs, the pc is 1 years old , Ryzen 5 3400G , no problems at all with the 19.04 distro

So here is the output of systemd-analyze



systemd-analyze
Startup finished in 15.415s (firmware) + 4.265s (loader) + 3.541s (kernel) + 1min 39.750s (userspace) = 2min 2.973s
graphical.target reached after 1min 39.734s in userspace


and here the critical-chain


graphical.target @1min 39.734s
└─multi-user.target @1min 39.734s
└─kerneloops.service @1min 36.919s +21ms
└─network-online.target @1min 36.899s
└─NetworkManager-wait-online.service @1min 30.601s +6.296s
└─NetworkManager.service @1min 30.367s +233ms
└─dbus.service @1min 30.364s
└─basic.target @1min 30.357s
└─sockets.target @1min 30.357s
└─snapd.socket @1min 30.355s +697us
└─sysinit.target @1min 30.349s
└─systemd-timesyncd.service @1min 30.280s +69ms
└─systemd-tmpfiles-setup.service @1min 30.241s +37ms
└─systemd-journal-flush.service @301ms +320ms
└─systemd-journald.service @220ms +79ms
└─systemd-journald.socket @217ms
└─system.slice @214ms
└─-.slice @214ms


Any thoughts where to search next ?

Many thanks in advance

[oldfred]

Wide variety of issues.

HDD or SSD?
Is UEFI firmware & if SSD, the SSD firmware up to date?

Do all UUIDs in fstab match actuall partitions you have, often a reformatted swap changes and causes issues. Compare UUIDs, may sure all are valid.
cat /etc/fstab
lsblk -o NAME,FSTYPE,LABEL,MOUNTPOINT,SIZE,MODEL, uuid | egrep -v "^loop"

Are you using snaps. Many are now installed by default, instead of .deb. But snaps are slower.
Since these posts they have improved snaps, but still not as fast. I uninstall all snaps and install only .deb versions using snaptic or command line.

Other issues:
https://ubuntuforums.org/showthread.php?t=2436900&p=13932499#post13932499
https://ubuntuforums.org/showthread.php?t=2417453 &
https://ubuntuforums.org/showthread.php?t=2417453&p=13857392#post13857392 &
https://www.dedoimedo.com/computers/ubuntu-beaver-slow-boot.html

Changes I make:
turned off NetworkManager-wait with systemctl
changed from quiet splash to noplymouth, will see boot process rather than Ubuntu logo
sudo apt install libblockdev-crypto2 libblockdev-mdraid2
turned off printer when rebooting
removed snaps

Devices using LVFS for firmware updates
https://fwupd.org/lvfs/devicelist
If UEFI firmware update not supported (yet):
sudo apt-get purge fwupd

[tuxxtuta]

Sorry for the late response

Thank you for your reply,
YES! It was a wrong entry in my fstab , i thought that it was my HDD and i had comment the entry but the problem was not fixed , i found that there was an entry from the installation , i removed it and everything works perfect

thx again for your time :)