If you cancel print job during printing, or for some reason
(printer cable disconnected, power failure, etc.)
printer stops printing. Then you delete the failed print jobs, power the printer off and on, even restart the computer, but
printer still won't print. In this case, printer was disabled because of error during printing,
and you have to edit the printer configuration, to enable it back.
You need root (administrator) permissions for this operation.
To check the printer status, click icon 
on the Desktop. This will open Print Job Viewer. Choose Filter > Select Printer.
If you printer with red cross icon 
close to your printer model
name, then your printer is disabled and you need to edit printer configuration.
To open YaST click the K Menu icon 
on
the panel and choose System > YaST. You will need to enter the root password.
Click Hardware in the left-side menu, then Printer in the right-side menu.
In the new window click the Change button.
Select printer, that you want to edit, and click the Edit button.
In the Option area select State and banners settings, and click the Edit button.
The printer is idle or printing check-box is unmarked. This means that printer is disabled.
Check the field and click the Next button.
Click the OK button.
To save new configuration click the Finish button.
The system writes new configuration, and closes the window automatically.
You are now ready to print again.
We wish to thank Johannes Meixner of SUSE for the tip on improving these instructions.