This page is part of the debugging series — pages with debugging details for a variety of Ubuntu packages.
Bugs relating to KDE typically fall into 3 categories:
- User interface bugs - require a detailed description of the issue, steps to reproduce and screen captures where appropriate.
- Incorrect Functionality - require a detailed description of the issue, steps to reproduce and screen captures where appropriate.
- Crasher bugs - Log files from the crash incident are required to track down these.
Some possible problems with bug reports include:
- Hardware specific bugs - The developers may not have access to the hardware that triggers this bug. Certain log files and command outputs can help. For KDE, this can be relevant e.g. in configuration dialogs.
Package selection - Help to find the right package
How to file
See Reporting Bugs.
Choosing the right package
Usually you can find the right package in Launchpad by searching for the application. There is a lot of information about choosing a package at FindRightPackage. Here are some other useful guidelines for KDE components:
System Settings lives in kdebase-workspace, though is just the shell that gives you icons for the various settings modules. If you want to file a bug about a settings module, it should probably be against one of kdebase kdeadmin, or kdenetwork. Specifically:
knetworkconf, the manual network configuration module, is in kdeadmin
The filesharing module is in kdenetwork
Most others are in kdebase
Konqueror, Kate, and Konsole (and more) are in kdebase
Krunner, klipper, kscreensaver, ksysguard, kwin, and systemsettings are in kdebase-workspace
Knotify, kio slaves are in kdebase-runtime
Ark is in kdeutils.
If you have an issue consistent for all KDE applications, such as not being able to launch them, the problem is likely in kdelibs
Most parts of KDE use KDE's Bug Tracking System. If you think a bug is in KDE and not Kubuntu specific, please search for it at KDE's Bug Tracking System and file one there if need be. Link the upstream bug in the Launchpad bug by clicking "Also Effects Project." A bug with an upstream report should usually be "Confirmed" (you often shouldn't file it upstream if it's not). These bug reports can do a lot to improve the next version of KDE.
Bug tags specific to the package or area should be included here for reporters so they can tag their bug report.
Note: When adding new tags, the Bugs/Tags wiki page should then be modified to include these tags.
This bug needs the report to be forwarded to the upstream project
This bug is reported to the upstream project
This bug has been forwarded to the upstream project which has released a fix that has not been merged yet
This kde-guidance bug is in powermanager
This kde-guidance bug is in displayconfig
This kde-guidance bug is in userconfig
This kde-guidance bug is in mountconfig
This kde-guidance bug is in serviceconfig
This kde-guidance bug is in wineconfig
Every official KDE module has an additional package in the repository, suffixed with -dbg.
Debugging a crash
Applications by default on Kubuntu will generate useless backtraces when they crash. To get useful backtraces, all debugging symbols for the application need to be installed.
When utilizing the Crash Reporting Assitant, this should give you the opportunity to install the necessary debug symbol packages. However, if one gets a window noting the following example:
Missing debug information packages The packages containing debug information for the following application and libraries are missing: /usr/bin/plasmashell /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5 /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
Then one needs to manually enable the additional debugging symbols by folowing the instructions from here.
For additional information on how to debug KDE applications, see:
How to Triage
You can find information on what triaging is and how to do it at HowToTriage. Here are some pointers as well:
What does triaging bugs mean?
- Responding to new bugs as they are filed.
- Reproducing and confirming bug reports.
- Asking the reporter to provide missing information.
- Searching for duplicates in the bug tracking system.
Sending bugs to their upstream authors, when applicable. For KDE this is http://bugs.kde.org.
- Cross-referencing bugs from other distributions.
- Classifying bugs by package.
- Prioritizing bugs.
- Expiring old bugs with missing information and no response.
Suggestions and rules
- Read the wiki pages:
Unconfirmed ("New") bugs are a priority. An unconfirmed bug isn't of much use to a developer or to the reporter. It's a waste of developers' time to try to figure out if things are even real bugs, so that's our job. Do your best to reproduce bugs so that you can confirm them.
Bug reports often lack essential information required to fix them or to find out if they are already fixed. This can range from basic information such as what release they are using or even what program the bug is in to slightly more complex things like stack traces for crashes. Ask the reporter for any missing information. Be clear and polite. When you ask questions, mark the bug status as "Incomplete" until all the required information is provided. If you can reproduce the bug, provide the information yourself and mark "Confirmed."
Duplicate bug reports are common. When you are looking at a new bug, open up another window and do an advanced search for similar bugs, including ALL bugs -- closed and open. If you are certain a bug report is a duplicate, mark it that way and comment on the bug to inform the reporter. Usual responses for this can be found here. Other than this, avoid commenting on bugs marked as duplicates -- comment on the root bug.
Many bugs have already been fixed. For older bugs that you cannot reproduce, ask if the reporter is sill having the problem. If the problem was fixed with an update that can be identified, you can close the bug as "Fix Released". If the problem just magically went away, close the bug as "Invalid".
Bugs that are marked as "Incomplete" for over 3 months with a clear request for information but without a response that you can't reproduce aren't particularly useful. They should be closed as "Invalid". When closing a bug for this reason, be polite and inform the reporter why you are closing it, and tell them that they can reopen the bug if they still have the problem and can provide the needed information. Some responses for this can be found here.
If you think a bug is in KDE and not Kubuntu specific, please search for it at KDE's Bug Tracking System and file one there if need be. Link the upstream bug in the Launchpad bug by clicking "Also Effects Project." A bug with an upstream report should usually be "Confirmed" (you often shouldn't file it upstream if it's not). These bug reports can do a lot to improve the next version of KDE.
- Pick an application that you use a lot, and concentrate on it. This helps narrow down the list of bugs you are looking at and makes the work much more manageable. It also helps to be knowledgeable in the program(s) you are doing bug work for.
- If you have some rare configuration, look at bugs relating to it. For example, if you have a dual monitor setup, try to confirm some xinerama/xrandr related bugs. This is particularly helpful since many other people who come across those bugs have no way of doing anything with them.
- Keep all this in mind when filing your own bugs.
- Don't confirm your own bugs.
- Don't duplicate efforts. If there is already someone working on a bug and asking the right questions, move on to another one. There are plenty to go around.
- Keep in mind that while closing bugs is important, the key is that the bugs are FIXED.
DO get on #ubuntu-bugs and #kubuntu-bugs if you need help, to discuss bugs, and to watch for incoming bugs. #ubuntu+1 can also be useful to discuss development release problems with other users. Don't use #kubuntu for this.
Other useful bug lists
Here are the major Kubuntu Desktop packages and their bugs: https://launchpad.net/~kubuntu-team/+packagebugs
A vague list of all the unconfirmed bugs in Kubuntu.
Why can't I change the importance of bugs? Why can't I set Won't Fix or Triaged status?
You need to be a member of the ubuntu-bugcontrol team on launchpad to change the importance of bugs. This is mostly so people are responsible and don't raise the importance of their own bugs. Get someone to help you and set it for you, and consider applying for membership once you have some experience. See UbuntuBugControl for more information.