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cups cannot connect to server
garyh@HPLap:~$ cups-config --version
2.2.7 garyh@HPLap:~$ lpinfo -v lpinfo: Bad file descriptor garyh@HPLap:~$ lpstat -t scheduler is not running no system default destination lpstat: Bad file descriptor lpstat: Bad file descriptor lpstat: Bad file descriptor lpstat: Bad file descriptor lpstat: Bad file descriptor I was researching and learned the above. My printer-scanner HP 3520 is available via "Simple Scan" from the menu BUT I cannot print anything. I've uninstalled and re-installed HPLIP. Going to the settings-printers only gives option to "connect" and that /run/cups/cups.sock gives me "Cups server error". Don't know how to proceed now. |
It appears that cupsd is not running. Which distro are you using?
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Linux mint 19.3 Tricia
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Ok, try
Code:
sudo systemctl start cupsIt should be enabled already, but if not this will get it started at boot Code:
sudo systemctl enable cups |
start cups .......no errors, but no change
enable cups (Re-booted)...no errors, but no change...'failed to connect to server' |
Wen requesting a "Simple scan" User@HPLap recognizes HP Deskjet_3250_series, but when it comes to printing the print side-note is "Print to file" or "Generic Printer" and neither works.
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my address is 127.0.0.53
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How is the printer connected i.e USB or wireless?
Since simple scan recognizes the printer so connectivity is not a problem. The min version of hplip required by the printer is 3.12.6 and I believe Mint installs 3.19.3 by default so setup should not be a problem. Does the output of this command show active running? systemctl status cups |
usb
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/var/log/cups$ systemctl status cups
● cups.service - CUPS Scheduler Loaded: loaded (/lib/systemd/system/cups.service; enabled; vendor preset: enabled) Active: failed (Result: start-limit-hit) since Thu 2020-07-02 20:13:10 EDT; 26min ago Docs: man:cupsd(8) Main PID: 1095 (code=killed, signal=TERM) Jul 02 20:13:10 HPLap systemd[1]: cups.service: Service hold-off time over, scheduling restart. Jul 02 20:13:10 HPLap systemd[1]: cups.service: Scheduled restart job, restart counter is at 4. Jul 02 20:13:10 HPLap systemd[1]: Stopped CUPS Scheduler. Jul 02 20:13:10 HPLap systemd[1]: Started CUPS Scheduler. Jul 02 20:13:10 HPLap systemd[1]: cups.service: Service hold-off time over, scheduling restart. Jul 02 20:13:10 HPLap systemd[1]: cups.service: Scheduled restart job, restart counter is at 5. Jul 02 20:13:10 HPLap systemd[1]: Stopped CUPS Scheduler. Jul 02 20:13:10 HPLap systemd[1]: cups.service: Start request repeated too quickly. Jul 02 20:13:10 HPLap systemd[1]: cups.service: Failed with result 'start-limit-hit'. Jul 02 20:13:10 HPLap systemd[1]: Failed to start CUPS Scheduler. |
What happened was ... I tried to pipe a cat command to lp0. (unrecognized and suggested "lpr" cups-bsd.
I apt install lpr and see that cups was removed. (mistake) I apt remove lpr -and- apt install cups-bsd (I then go to my email and begin following your suggestion. |
Make sure /etc/cups/cupsd.conf exists. If there is a /etc/cups/cupsd.conf.default but no cupsd.conf then copy the default and try restarting cups.
lp0 references a legacy hardware parallel port. cups has a usb back end which communicates directly with the printer. |
root@HPLap:/etc/cups# ls -l
total 88 -rw-rwxrwx 1 root lp 108 Jun 21 21:49 classes.conf -rw-rwxrwx 1 root root 26954 May 9 2019 cups-browsed.conf -rw-rwxrwx 1 root lp 21 Jun 30 13:51 cupsd.conf -rw-rwxrwx 1 root lp 4571 Jun 30 13:50 cupsd.conf.O -rw-rwxrwx 1 root root 2923 Aug 16 2019 cups-files.conf drwxr-xr-x 2 root root 4096 Aug 16 2019 interfaces drwxr-xr-x 2 root lp 4096 Jun 21 22:15 ppd -rw-rwxrwx 1 root lp 552 Jun 21 22:16 printers.conf -rw-rwxrwx 1 root lp 552 Jun 21 21:49 printers.conf.O -rw-rwxrwx 1 root root 240 Dec 13 2019 raw.convs -rw-rwxrwx 1 root root 211 Dec 13 2019 raw.types -rw-rwxrwx 1 root root 142 Aug 16 2019 snmp.conf drwx------ 2 root lp 4096 Aug 16 2019 ssl -rw-rwxrwx 1 root lp 1222 Jun 30 13:51 subscriptions.conf -rw-rwxrwx 1 root lp 930 Jun 30 13:50 subscriptions.conf.O root@HPLap:/etc/cups# open /etc/cups/cupsd.conf root@HPLap:/etc/cups# Listen Command 'Listen' not found, did you mean: command 'listen' from deb ruby-listen Try: apt install <deb name> root@HPLap:/etc/cups# listen Traceback (most recent call last): 5: from /usr/bin/listen:4:in `<main>' 4: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require' 3: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require' 2: from /usr/lib/ruby/vendor_ruby/listen/cli.rb:1:in `<top (required)>' 1: from /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require' /usr/lib/ruby/2.5.0/rubygems/core_ext/kernel_require.rb:59:in `require': cannot load such file -- thor (LoadError) root@HPLap:/etc/cups# |
Code:
root@HPLap:/etc/cups# ListenCode:
sudo cat /etc/cups/cups.conf |
I do not have cups.conf ... cupsd.conf instead........
------------------------------- root@HPLap:/etc/cups# sudo cat /etc/cups/cupsd.conf PreserveJobFiles Yes ------------------------------- |
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