Troubleshoot Other

HP Device Manager is non-functional for my device

Applies To
Symptoms: 

HP Device Manager is non-functional for my device

Solution: 
  1. Run:
$ hp-info
  1. Look at the output for:
[ERROR]: Model query failed.
  1. First check and verify there are no connection issues with the printer.
  2. If the model query failed or there are errors in the output, then please submit this to the HPLIP Launchpad.net Page along with the hp-info output.

I am trying to setup my printer in SUSE using CUPS and am having 

problems

Solution: 

To install on SUSE, unless you have created a CUPS admin, you must use YaST. Otherwise, printer setup using CUPS will fail. Follow the YaST instructions in the Installation Instructions section.

I installed a printer in CUPS with a usb:, socket:, etc. backend and it doesn't show up in the Device Manager

Solution: 

Only devices installed that are using the "hp:" backend will display in the Device Manager. Re-install the printer using the "hp:" device URI and then re-fresh (with F6) or re-run the Device Manager.

I've plugged in my USB printer, but it doesn't show up in the CUPS interface

Solution: 

Restart CUPS. There are two basic methods: (Note: You must be root to execute these commands)

# /etc/init.d/cupsd restart

or:

# killall -HUP cupsd

There is no listing in CUPS or my printer installation tool for the exact model number of my printer

Solution: 
  1. Check to see if there is another model in the list that is in the correct "series". For example, a "DeskJet 5510" will use a "DeskJet 5500 Series" driver. In general, you "round down" the model number that appears on the case of the printer to the next lowest number that is available in the software.
  2. If this doesn't work, visit this page and follow the instructions to download and install a new PPD file for your printer: http://linuxprinting.org/

Printer still does not show up in CUPS after restarting.

Solution:

  1. Check and make sure that the printer is connected to your system and powered on with no printer errors.
  2. Unplug the printer from your computer, open a terminal/console window and enter this command.
tail -f /var/log/messages

then reconnect the printer. You should see the system display something like:

Mar 16 11:45:43 localhost kernel: [4298892.030000] hub 2-1.2:1.0: USB hub found
Mar 16 11:45:43 localhost kernel: [4298892.033000] hub 2-1.2:1.0: 4 ports detected
Mar 16 11:45:44 localhost kernel: [4298892.316000] usb 2-1.3: new full speed USB device using uhci_hcd and address 11
Mar 16 11:45:44 localhost kernel: [4298892.409000] hub 2-1.3:1.0: USB hub found
Mar 16 11:45:44 localhost kernel: [4298892.412000] hub 2-1.3:1.0: 4 ports detected
Mar 16 11:45:44 localhost kernel: [4298892.697000] usb 2-1.2.1: new full speed USB device using uhci_hcd and address 12
Mar 16 11:45:44 localhost kernel: [4298892.798000] drivers/usb/class/usblp.c: usblp0: USB Bidirectional printer dev 12 if 1 alt 0 proto 2 vid 0x03F0 pid 0x4311
Mar 16 11:45:44 localhost kernel: [4298892.798000] scsi6 : SCSI emulation for USB Mass Storage devices
Mar 16 11:45:44 localhost kernel: [4298892.975000] usb 2-1.2.2: new full speed USB device using uhci_hcd and address 13
Mar 16 11:45:44 localhost kernel: [4298893.063000] usb 2-1.2.2: not running at top speed; connect to a high speed hub
Mar 16 11:45:45 localhost kernel: [4298893.077000] drivers/usb/class/usblp.c: usblp0: USB Bidirectional printer dev 13 if 0 alt 0 proto 2 vid 0x03F0 pid 0x8804
Mar 16 11:45:45 localhost kernel: [4298893.255000] usb 2-1.3.1: new full speed USB device using uhci_hcd and address 14
Mar 16 11:45:45 localhost kernel: [4298893.342000] usb 2-1.3.1: not running at top speed; connect to a high speed hub
Mar 16 11:45:45 localhost kernel: [4298893.356000] drivers/usb/class/usblp.c: usblp0: USB Bidirectional printer dev 14 if 0 alt 1 proto 2 vid 0x03F0 pid 0x2817
Mar 16 11:45:45 localhost kernel: [4298893.360000] scsi7 : SCSI emulation for USB Mass Storage devices
Mar 16 11:45:45 localhost kernel: [4298893.539000] usb 2-1.3.3: new full speed USB device using uhci_hcd and address 15
Mar 16 11:45:45 localhost kernel: [4298893.624000] usb 2-1.3.3: not running at top speed; connect to a high speed hub
Mar 16 11:45:45 localhost kernel: [4298893.638000] drivers/usb/class/usblp.c: usblp0: USB Bidirectional printer dev 15 if 1 alt 0 proto 2 vid 0x03F0 pid 0x5711
Mar 16 11:45:45 localhost kernel: [4298893.638000] scsi8 : SCSI emulation for USB Mass Storage devices

Then enter this command:

dmesg

You should see something like this displayed:

[4298893.638000] scsi8 : SCSI emulation for USB Mass Storage device
[4298893.638000] usb-storage: device found at 15
[4298893.638000] usb-storage: waiting for device to settle before scanning
[4298897.802000]   Vendor: HP        Model: Officejet 74xx S  Rev: 1.00
[4298897.802000]   Type:   Direct-Access                      ANSI SCSI revision: 02
[4298897.816000] sd 6:0:0:0: Attached scsi removable disk sdb
[4298897.816000] sd 6:0:0:0: Attached scsi generic sg1 type 0
[4298897.817000] usb-storage: device scan complete
[4298898.366000]   Vendor: HP        Model: LaserJet 2840     Rev: 1.00
[4298898.366000]   Type:   Direct-Access                      ANSI SCSI revision: 02
[4298898.381000] sd 7:0:0:0: Attached scsi removable disk sdc
[4298898.381000] sd 7:0:0:0: Attached scsi generic sg2 type 0
[4298898.384000] usb-storage: device scan complete
[4298898.642000]   Vendor: HP        Model: Photosmart C4180  Rev: 1.00
[4298898.642000]   Type:   Direct-Access                      ANSI SCSI revision: 02
[4298898.657000] sd 8:0:0:0: Attached scsi removable disk sdd
[4298898.657000] sd 8:0:0:0: Attached scsi generic sg3 type 0
[4298898.660000] usb-storage: device scan complete

Enter this command:

/usr/lib/cups/backend/hp

You should see something like this displayed:

direct hp:/usb/Photosmart_C4100_series?serial=XXXXXXXXXXXXXX "HP Photosmart_C4100_series" "hp:/usb/Photosmart_C4100_series?serial=XXXXXXXXXXXXXX"
direct hp:/usb/HP_Color_LaserJet_2840?serial=XXXXXXXXXXXX "HP HP_Color_LaserJet_2840" "hp:/usb/HP_Color_LaserJet_2840?serial=XXXXXXXXXXXX"
direct hp:/usb/Deskjet_6980_series?serial=XXXXXXXXXXXXXX "HP Deskjet_6980_series" "hp:/usb/Deskjet_6980_series?serial=XXXXXXXXXXXXXX"
direct hp:/usb/Officejet_7400_series?serial=XXXXXXXXXXXXXX "HP Officejet_7400_series" "hp:/usb/Officejet_7400_series?serial=XXXXXXXXXXXXXX"

These are several ways to confirm that the printer is connected and working with your system.

  1. If any of the above steps failed try replacing the USB cable or there could be a hardware issue.

When I go to login to the CUPS web interface (http://localhost:631) it asks for my root password--and my root password doesn't give me access

Solution: 

First verify with your distribution the best way to install your printer.

To enable the CUPS web interface follow these directions.

Edit the cupsd.conf file.

# gedit /etc/cups/cupsd.conf

Find this section:

# Restrict access to the admin pages...
<Location /admin>
#Order allow,deny
#Allow localhost
</Location>

Change it to:

# Restrict access to the admin pages...
<Location /admin>
Order allow,deny
Allow localhost
</Location>

Save/Exit, restart CUPS:

# /etc/init.d/cups restart

for Ubuntu

$ /etc/init.d/cupsys restart

Open your web browser, go to http://localhost:631. Complete the administrative tasks you need to complete.

openSUSE: Password Not Excepted In hp-toolbox When Changing Printer Settings

Symptoms: 

I'm trying to change the printer settings in the toolbox and I'm getting prompted for a password in the terminal window and my password isn't working

Solution: 

You will need to add your user to the "LP" user group. To do this in SUSE:

Run YaST
Goto Security and Users
Edit your user
Click 'details'
Click LP
Finally click 'accept'.

Note: You may need to logout and back in for the changes to take effect.

Note: If you continue to experience problems you may need to add the following groups to your user account; lp, sys, and/or root.