[SOLVED] cupsd starts at boot even when I disabled the service

LMINTUSER · 05-01-2019, 01:16 AM

Hi everybody at LQ,

I am running linux mint 19 tessa.

I did my research before posting here on how to disable the cupsd at boot. I tried these two commands so far

Code:

sudo systemctl disable cups

and then the next day I tried

Code:

sudo systemctl disable cups.service

Despite trying these two commands, cupsd still starts at boot.

Am I doing something wrong in the systax or does mint has a different way of disabling services at boot?

I appreciate any help. Thanks

LMINTUSER · 05-01-2019, 03:21 AM

I tried many distros for years and this is the first time that a service still starts at boot when I didn't want it to.

I did more research online and on youtube and the systax is correct. Must be a bug in linux mint 19.

dc.901 · 05-01-2019, 06:20 AM

What is the output of:

Code:

sudo systemctl is-enabled cups

Do you have any service running that requires cups and might be enabling it?

When you run these, is there any output:

Code:

sudo systemctl stop cups
sudo systemctl disable cups

Then, run dmesg and review syslog; is there anything there about cups?

LMINTUSER · 05-01-2019, 07:49 AM

After I did a reboot, i typed this

sudo systemctl is-enabled cups
disabled

However

Code:

service cups status
● cups.service - CUPS Scheduler
   Loaded: loaded (/lib/systemd/system/cups.service; disabled; vendor preset: en
   Active: active (running) since Wed 2019-05-01 08:39:12 EDT; 9s ago
     Docs: man:cupsd(8)
 Main PID: 3458 (cupsd)
    Tasks: 1 (limit: 4915)
   CGroup: /system.slice/cups.service
           └─3458 /usr/sbin/cupsd -l

It shows it is was disable in RED, But it shows active and running. Next, I ran the other commands

sudo systemctl stop cups
dmesg | grep -i cups

sudo systemctl disable cups
Synchronizing state of cups.service with SysV service script with /lib/systemd/systemd-sysv-install.
Executing: /lib/systemd/systemd-sysv-install disable cups

dmesg | grep -i cups

No output from dmesg after stopping and disabling cups

I rebooted again and it is active and running again. lol

joe_2000 · 05-01-2019, 08:19 AM

Maybe cups is started by a depending unit. Run

Code:

systemctl --reverse list-dependencies cups

to find it.

On a debian system I just tested on, this returned cups-browsed.service.

Is that enabled on your system? If so, try disabling it and reboot.

sgrlscz · 05-01-2019, 08:24 AM

The systemctl disable command prevents auto-starting of the service at boot, but it doesn't prevent the service from being started. If the service is a dependency of another service, it will be started when that other service is started.

To completely prevent a service from starting, you can mask it, but you should be very careful with that because I've read that unmasking may not work reliably, so it can be difficult to restore the service if necessary. Masking completely disables a service by making its unit file a symlink to /dev/null, which means there is no way to start the service, so even it's a dependency, it won't be able to start.

LMINTUSER · 05-01-2019, 09:11 AM

Quote:

Originally Posted by joe_2000

Maybe cups is started by a depending unit. Run

Code:

systemctl --reverse list-dependencies cups

to find it.

On a debian system I just tested on, this returned cups-browsed.service.

Is that enabled on your system? If so, try disabling it and reboot.

Hi Joe,

I tried your command at it was depended on cups-browsed.service

Code:

systemctl --reverse list-dependencies cups
cups.service
● └─cups-browsed.service

I then ran

Code:

sudo systemctl disable cups-browsed.service

And rebooted.

Happily the cupsd did not start at boot.

Thank you, Thank you, and THANK YOU JOE !!!!!!!!!!!!!!!

Thanks dc.901 and sgrlscz for the replies and suggestions!