How to speed up starting of Ubuntu 19.04 on the Dell Inspiron 5580

Open a terminal windows in linux and enter the following commands:

$ sudo apt-get purge snapd* <enter>

Above command removes snapd.

$ sudo systemd-analyze blame <enter>

Also, found the plymouth-quit-wait.service takes very long time in boot. To eliminate the problem, enter following commands:

$ sudo vi /etc/default/grub <enter>

# Insert below line:

Update grub thereafter:

$ sudo update-grub <enter>