Very slow boot after upgrading to Lubuntu 18.04

[pichuchikid]

Hi I was using Lubuntu 17 for my old PC and it was working great. Recently I upgraded to 18.04 and the boot time increased more or less from 1.5 minutes to at least 4 minutes. Since I didn't worried much about my contents I installed Lubuntu 18.04 again from scratch, and the problem didn't recovered. I executed cat /var/log/boot.log in console and this is what it encountered:
https://mega.nz/#!4cZyVI5a!_1l4FmFwzG_VUF-ze-L3AxiAtciTw0G2VmFxsLmK_TE
I didn't know which parts where important so I uploaded the entire file

Is there any paramater I should change to make it faster? I could reinstall Lubuntu 17 otherwise.
Thanks!

[Xian]

You are getting a lot of timeouts similar to:


[ **] A start job is running for Hold until boot process finishes up (3min 8s[ ***]
A start job is running for Hold until boot process finishes up (3min 8s[ *** ]
A start job is running for Hold until boot process finishes up (3min 9s[ *** ]
A start job is running for Hold until boot process finishes up (3min 9s[*** ]
A start job is running for Hold until boot process finishes up (3min 10[** ]
A start job is running for Hold until boot process finishes up (3min 10[* ]
A start job is running for Hold until boot process finishes up (3min 11 ]
Stopping Session c1 of user lightdm.
[ OK ] Stopped Session c1 of user lightdm.

So let's start with the lightdm configuration.

From a terminal type these commands:


sudo dpkg-reconfigure lightdm

At the prompt you should select 'lightdm'.

Reboot system.

[pichuchikid]

I entered that command and there was no prompt.
I rebooted and it made no difference :s.

[Xian]

Do you have lightdm installed?

sudo apt-get install lightdm
By using the command

sudo dpkg-reconfigure lightdm
You should get windows similar to this:

http://i.imgur.com/kB2ehQVl.png (https://imgur.com/kB2ehQV)

http://i.imgur.com/c6HVQKWl.png (https://imgur.com/c6HVQKW)

[pichuchikid]

It was already installed, nothing happens after I enter that command still. Could it be a problem with plymouth-start.service??

[Xian]

From this I wonder ...

Is it possible that you have more than one user with the same UID?


[ OK ] Started Session c1 of user lightdm.[ OK ] Started User Manager for UID 106.
[ **] A start job is running for Hold until boot process finishes up (3min 8s[ ***]
A start job is running for Hold until boot process finishes up (3min 8s[ *** ]
A start job is running for Hold until boot process finishes up (3min 9s[ *** ]
A start job is running for Hold until boot process finishes up (3min 9s[*** ]
A start job is running for Hold until boot process finishes up (3min 10[** ]
A start job is running for Hold until boot process finishes up (3min 10[* ]
A start job is running for Hold until boot process finishes up (3min 11
Stopping Session c1 of user lightdm.
[ OK ] Stopped Session c1 of user lightdm.
Stopping User Manager for UID 106...
[ OK ] Created slice User Slice of lucas.
Starting User Manager for UID 1000...
[ OK ] Started Session c2 of user lucas.
[ OK ] Stopped User Manager for UID 106.
[ OK ] Removed slice User Slice of lightdm.
[ OK ] Started User Manager for UID 1000.

[Xian]

You can also read here to see if any solutions posted helps:

https://askubuntu.com/questions/760825/cannot-boot-system-due-to-start-job-running-for-hold?