Bug 328059

Summary:	printer - Systemsettings crashes when selecting new driver for installed printer
Product:	[Frameworks and Libraries] print-manager	Reporter:	Matthew <zenomorph.ebe>
Component:	general	Assignee:	Daniel Nicoletti <dantti12>
Status:	RESOLVED WORKSFORME
Severity:	crash
Priority:	NOR
Version:	4.11.3
Target Milestone:	---
Platform:	Fedora RPMs
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description Matthew 2013-11-25 13:44:47 UTC

I had installed a Samsung ML-2510 laser printer and was shown the recommended drivers to use as being the ML-2550 printer. I installed the simplified version of this driver, but after that the printer wasn't printing anything, so I wanted to try the other 2550 driver, but once I went into Printer - systemsettings and selected the other driver, system settings would no longer responde as expected, it just froze.
I tried to close the process the usual ways but found nothing worked.

However after I had tried closing the whole printer - systemsettings windows by using the red cross a couple of times, I got a popup message to say the process wasn't responding and do I want to wait or terminate it.

I terminated the process as just waiting still didn't do anything more.

when I tried the printer settings again, I got into printer-systemsettings window but it's still frozen after that, could even select a new driver, let alone try to save the change.

Reproducible: Always

Steps to Reproduce:
1.Add printer in the usual way using the add printer wizard.
2.test printer to see if it worked, but it didn't print.
3.try to change the driver being used by modifying the installed printers driver selection.
Actual Results:
Printer - systemsettings process stops working when I try to save the new driver, window freezes and can't be closed under normal procedures, I had to terminate the process.

Expected Results:
I should have been able to modify the driver selected for the installed printer, appy the change and close Printer - Systemsettings window.

Proiblems seem to have appeared after a recent kernel update, but I've also recently started using KDM instead of Gnome as KDM seemed to be updating better than Gnome. Note sure yet if the printer problem effects Gnome as well, but will test this soon.

Comment 1 Matthew 2013-11-25 17:38:47 UTC

I went back to my system and logged onto a Gnome session and used it's printer configuration tool to see if the instaleld driver worked with gnome, it didn't.  I still had the problem where the printer wouldn't produce an output, just made noises like it was going to print.  

However under Gnome, I wasn't getting any problems with selecting drivers, they could be selected but didn't do anything more than before.

As a last resort I removed the printer completely, then re-added the samsung ML-2510 in the usual way.  This time however when I selected the ML-2510 to install, the next step was that the installer came up with a new driver pack to be installed, which wasn't indicated when I installed the same printer under KDE.  The extra package it was asking for now was Driver for QPDL/SPL2 printers (Samsung and several Xerox printers).  Now when the installation had finished, the printer operated correctly.

It appears to me now that when I installed the Samsung ML-2510 under a KDE session, the installation process had not correctly pulled in the relevent driver pack it should have, so only part of the installation had been carried out.

Could it therefore be that the KDE printer installation process doesn't search for the required dependencies?

Comment 2 Daniel Nicoletti 2018-01-27 03:46:23 UTC

I can not reproduce your issue, it works for me, if you can still reproduce it, please attach the process to gdb and provide us a backtrace or more info like which exact driver did you use.
This is likely crashing CUPS but our UI shouldn't be affected by that.

Comment 3 Matthew 2018-01-30 15:15:49 UTC

I was advised years ago that this bug was expired, being as it was reported in 2013.

However I think the bug got solved by some subsequent updates in KDE and Gnome.