What is the CUPS scheduler dependency

English Applications
1 
sudo cat /etc/cups/cupsd.conf|egrep -i "listen|web|browsing"
# Only **listen** for connections from the local machine. 
**Listen** localhost:631 
**Listen** /run/cups/cups.sock 
**Browsing** On 
# **Web** interface setting... 
**Web**Interface Yes 
# 2022-06-13,19:29:14 modify_cupsd_conf **Browsing** On

and


[FONT=monospace]**#** systemctl status cups 
○ cups.service - CUPS Scheduler 
     Loaded: loaded (/usr/lib/systemd/system/cups.service; enabled; vendor preset: enabled) 
     Active: inactive (dead) (Result: exit-code) since Mon 2022-06-13 19:29:28 EDT; 32min ago 
TriggeredBy: **×** cups.path 
             **×** cups.socket 
       Docs: man:cupsd(8) 
    Process: 14675 ExecStart=/usr/sbin/cupsd -l **(code=exited, status=1/FAILURE)**
   Main PID: 14675 (code=exited, status=1/FAILURE) 
        CPU: 60ms 

Jun 13 19:29:28 new-rr-wifi.ewart.homelinux.net systemd[1]: cups.service: Scheduled restart job, restart counter is at 25. 
Jun 13 19:29:28 new-rr-wifi.ewart.homelinux.net systemd[1]: Stopped CUPS Scheduler. 
Jun 13 19:29:28 new-rr-wifi.ewart.homelinux.net systemd[1]: **Dependency failed for CUPS Scheduler.**
Jun 13 19:29:28 new-rr-wifi.ewart.homelinux.net systemd[1]: **cups.service: Job cups.service/start failed with result 'dependency'.**

I’m running [FONT=monospace]openSUSE Tumbleweed 20220611

I have no printers directly attached to this computer. There are 2 printers directly attached to my lan and one connected to my server

What is the CUPS scheduler dependency?

[/FONT]

[/FONT]

2

Something to check

ls -l /etc/cups/cupsd.conf*

What does the following report?

sudo cupsd -t
3

Systemd tells all:

**6700K:~ #** systemctl list-dependencies cups.service  
cups.service 
○ ├─cups.socket 
**●** ├─system.slice 
**●** └─sysinit.target 
**●**   ├─dev-hugepages.mount 
**●**   ├─dev-mqueue.mount 
**●**   ├─dracut-shutdown.service 
○   ├─grub2-once.service 
**●**   ├─kmod-static-nodes.service 
**●**   ├─plymouth-read-write.service 
○   ├─plymouth-start.service 
**●**   ├─proc-sys-fs-binfmt_misc.automount 
**●**   ├─sys-fs-fuse-connections.mount 
**●**   ├─sys-kernel-config.mount 
**●**   ├─sys-kernel-debug.mount 
**●**   ├─sys-kernel-tracing.mount 
**●**   ├─systemd-ask-password-console.path 
○   ├─systemd-binfmt.service 
○   ├─systemd-boot-system-token.service 
○   ├─systemd-firstboot.service 
○   ├─systemd-hwdb-update.service 
○   ├─systemd-journal-catalog-update.service 
**●**   ├─systemd-journal-flush.service 
**●**   ├─systemd-journald.service 
○   ├─systemd-machine-id-commit.service 
**●**   ├─systemd-modules-load.service 
**●**   ├─systemd-random-seed.service 
**●**   ├─systemd-sysctl.service 
○   ├─systemd-sysusers.service 
**●**   ├─systemd-tmpfiles-setup-dev.service 
**●**   ├─systemd-tmpfiles-setup.service 
**●**   ├─systemd-udev-trigger.service 
**●**   ├─systemd-udevd.service 
○   ├─systemd-update-done.service 
**●**   ├─systemd-update-utmp.service 
**●**   ├─cryptsetup.target 
**●**   ├─integritysetup.target 
**●**   ├─local-fs.target 
**●**   │ ├─-.mount 
**●**   │ ├─\x2esnapshots.mount 
**●**   │ ├─backup\x2dhome.mount 
**●**   │ ├─boot-efi.mount 
**●**   │ ├─boot-grub2-i386\x2dpc.mount 
**●**   │ ├─boot-grub2-x86_64\x2defi.mount 
**●**   │ ├─home.mount 
**●**   │ ├─opt.mount 
**●**   │ ├─root.mount 
**●**   │ ├─srv.mount 
**●**   │ ├─systemd-remount-fs.service 
**●**   │ ├─tmp.mount 
**●**   │ ├─usr-local.mount 
**●**   │ └─var.mount 
**●**   ├─swap.target 
**●**   └─veritysetup.target 
**6700K:~ #**

Cups is disabled on host 6700K:


**6700K:~ #** systemctl list-unit-files cups* 
UNIT FILE            STATE    VENDOR PRESET 
cups.path            disabled enabled       
cups-browsed.service **disabled disabled     ** 
cups-lpd@.service    static   -             
cups.service         disabled enabled       
cups-lpd.socket      **disabled disabled     ** 
cups.socket          **disabled ****enabled      ** 

6 unit files listed. 
**6700K:~ #** systemctl list-units cups*      
  UNIT LOAD ACTIVE SUB DESCRIPTION 
**0 loaded units listed.** Pass --all to see loaded but inactive units, too. 
To show all installed unit files use 'systemctl list-unit-files'. 
**6700K:~ #**
4

I’m getting:

**#** systemctl list-dependencies cups.service 
cups.service 
**×** ├─cups.path 
**×** ├─cups.socket 
**●** ├─system.slice 
**●** └─sysinit.target 
**●**   ├─dev-hugepages.mount 
**●**   ├─dev-mqueue.mount 
**●**   ├─dracut-shutdown.service 
**●**   ├─kmod-static-nodes.service 
**●**   ├─lvm2-lvmpolld.socket 
**●**   ├─lvm2-monitor.service 
**●**   ├─plymouth-read-write.service 
○   ├─plymouth-start.service 
**●**   ├─proc-sys-fs-binfmt_misc.automount 
**●**   ├─sys-fs-fuse-connections.mount 
**●**   ├─sys-kernel-config.mount 
**●**   ├─sys-kernel-debug.mount 
**●**   ├─sys-kernel-tracing.mount 
○   ├─systemd-ask-password-console.path 
○   ├─systemd-binfmt.service 
○   ├─systemd-boot-system-token.service 
○   ├─systemd-firstboot.service 
○   ├─systemd-hwdb-update.service 
○   ├─systemd-journal-catalog-update.service 
**●**   ├─systemd-journal-flush.service 
**●**   ├─systemd-journald.service 
○   ├─systemd-machine-id-commit.service 
**●**   ├─systemd-modules-load.service 
**●**   ├─systemd-random-seed.service 
**●**   ├─systemd-sysctl.service 
○   ├─systemd-sysusers.service 
**●**   ├─systemd-tmpfiles-setup-dev.service 
**●**   ├─systemd-tmpfiles-setup.service 
**●**   ├─systemd-udev-trigger.service 
**●**   ├─systemd-udevd.service 
○   ├─systemd-update-done.service 
**●**   ├─systemd-update-utmp.service 
**●**   ├─cryptsetup.target 
**●**   ├─integritysetup.target 
**●**   ├─local-fs.target 
**●**   │ ├─-.mount 
**●**   │ ├─\x2esnapshots.mount 
**●**   │ ├─boot-efi.mount 
**●**   │ ├─boot-grub2-i386\x2dpc.mount 
**●**   │ ├─boot-grub2-x86_64\x2defi.mount 
**●**   │ ├─home.mount 
**●**   │ ├─oldroot-home.mount 
**●**   │ ├─oldroot.mount 
**●**   │ ├─opt.mount 
**●**   │ ├─root.mount 
**●**   │ ├─srv.mount 
**●**   │ ├─systemd-remount-fs.service 
**●**   │ ├─tmp.mount 
**●**   │ ├─usr-local.mount 
**●**   │ └─var.mount 
**●**   ├─swap.target 
**●**   │ └─dev-disk-by\x2duuid-2f45a992\x2d37ff\x2d4702\x2db914\x2d8e08b8c83a43.swap 
**●**   └─veritysetup.target

There seems to be a problem with cups.path and cups.socket

**#** systemctl list-unit-files cups* 
UNIT FILE            STATE    VENDOR PRESET
cups.path            enabled  enabled      
cups-browsed.service **enabled  ****disabled     **
cups-lpd@.service    static   -            
cups.service         enabled  enabled      
cups-lpd.socket      **disabled disabled     **
cups.socket          **enabled  enabled      **

6 unit files listed.

I tried enabling cups-lpd.socket which changed its state in systemctl list-unit-files cups* to enabled. Still got “Failed to start CUPS Scheduler”

I’m running on an Intel(R) Core™ i9-9900K CPU @ 3.60GHz (CoffeeLake-S) with 64GB of memory (62.5GB after the i915 VGA takes some of it)

5

I got:

ls -l /etc/cups/cupsd.conf*
-rw-r--r-- 1 root root 6454 Jun 13 19:29 /etc/cups/cupsd.conf
-rw-r--r-- 1 root root 6403 Apr 10 21:46 /etc/cups/cupsd.conf.yast2save

and

Unknown SystemGroup "lpadmin" on line 19 of /etc/cups/cups-files.conf. 
"/etc/cups/cups-files.conf" contains errors.

lpadmin was not in /etc/group so I added it as a systemgroup and added lpadmin to my ID.

That was the problem. I have successfully started CUPS and added one of the printers directly to the lan.

Thanks for your help.

6

By default it is “SystemGroup root”. Anyway, glad to have been of assistance! :slight_smile: