Guidelines and HOWTOs/Bug triaging

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Revision as of 16:19, 15 August 2018 by Omar (talk | contribs) (Keywords)
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Help Konqi catch some bugs!

KDE bug triagers verify that Bugzilla tickets describe real bugs, are accurate and reproducible, and that the reporter has given enough information. The goal is to save developers from doing this work, which helps them fix bugs more quickly and do more work on KDE software.

You don't need any programming knowledge to be a bug triager, but experience has shown that members of this team often learn a lot in the course of dealing with bug reports, and many move on to developing the software itself. If you are just starting to learn programming, it's a great way to gain familiarity with the components and give practical support to the KDE community.

General considerations

  • Be polite. Bug triagers are the face of KDE. Be nice to bug reporters, even if they aren't nice to you! You have an opportunity to showcase the best of the KDE community, and turn skeptics into fans. Being nice is more impactful than being right.
  • Explain your decisions. It can be very frustrating for a bug reporter if his/her report is suddenly closed without any reason. Write why you think that your action is the correct one, and don't establish your opinion as the all-ruling fact.
  • Don't be afraid to make mistakes. Everybody does make mistakes, especially when starting out with bug triaging. And as long as you think before you act, you should be fine

Decide what to work on

Today's bug reports

All bug reports of a single product

You'll want to use the Advanced search for this:

You can see which products are most in need of bug triaging here, with links to their bug lists:

Here are some common and popular KDE products in need of bug triaging:

What to do with bug reports

Now that you have a list of bug reports, pick one and start working! Here is the optimal bug triaging workflow:

DarioAndres GuideToBugTriaging Workflow.png

There are several things that must be checked and "fixed" to make an initial bug report an interesting and useful piece of information for the developers.

if at any point you aren't sure how to proceed, move onto the next bug or ask a KDE developers or other more experienced contributor

Identify duplicates

As KDE has so many users, we get a lot of reports about bugs which have already been reported (duplicates). Before putting any effort in the current report, check for an existing report. If you find a pre-existing bug report describing the same issue, mark this one as a duplicate of it.

Please see the article on identifying duplicates.

Identify bugs caused by external issues (UPSTREAM/DOWNSTREAM)

Not all real bugs affecting KDE software are actually caused by a fault in KDE software. The issue may be "upstream" or "downstream" of KDE.

If you imagine software as a river, then software that flows to KDE from others (e.g. Qt, X11, the Linux kernel) is Upstream of KDE, and others who make use of KDE software that's flowing to them (e.g Linux distributions, 3rd party Plasma plugins) are Downstream of KDE.

Examples of Upstream issues:

  • KDE app experiences a new behavioral issue after upgrading to a neer version of Qt
  • KDE app crashes in QtQuick
  • KDE app experiences an issue, but only when using the proprietary NVIDIA driver

Examples of Downstream issues:

  • A KDE app crashes because a dependent package is not automatically installed by the user's distro
  • Fonts are really hard to read, but only in certain distros
  • Graphical corruption with a Plasma theme downloaded from

Ask for any missing information

Now that you know that the bug report is unique and that it is not an external issue, you need to check that all the needed information is there.

  • If the description is not written in English and you cannot understand it, you may want to ask other KDE contributors to translate it for you. Alternatively, you can ask the reporter to use some online translation system (you won't get a clear explanation, but it is something).
After asking for further information, mark the report as "NEEDSINFO" with resolution "WAITINGFORINFO" (or resolution "BACKTRACE" if you are waiting for a complete backtrace)

Reproduce the bug

At this point, the bug report enough is complete enough that you should use the information provided by the reporter and try to make the bug appear on your own system.

It is important to have up-to-date KDE components installed to test bugs. Only try to reproduce bugs using the latest versions of KDE software, or even development versions

Testing bug reports may modify/alter your own desktop configuration; also, to try to reproduce some bugs you may need a clean pristine (or slightly modified) environment. We recommend you to perform tests on a separate KDE installation or a clean user. There is also a way to start KDE applications with a clean configuration, even under your current configuration (setting the KDEDIR environment variable at run-time to an empty directory).

You may want to use this reference text to setup your testing environment: Preparing a testing environment

If you can't reproduce with any scenario mentioned in the comments, you may want to try other related situations. Hopefully you will find a combination that reproduces the bug reliably. Write down any newly discovered steps to reproduce.

If you cannot reproduce the bug under any circumstances

Write down the steps you performed. You may want to ask the reporter if your steps missed something, or if anyone notices any other strange or non-default situation or configuration which may be related.

Hopefully, you will get feedback from the reporters and you could gather more information to try to reproduce the bug or close the report as RESOLVED WORKSFORME (or FIXED). Time to move onto the next bug!

If you can reproduce the bug

If you had to combine several steps to make your own "recipe" to reproduce, write them down. This kind of information is useful for the developers. If you had to use custom input data (text, or a file), you may want to attach it to the bug report. And mention the environment and circumstances under which you can reproduce the bug.

Reassign the bug report to a different Product, if necessary

Many bug reports are reported against the wrong product. This may happen because the original reporter didn't know which application/library the bug belongs to. For example, many bugs filed to Dolphin are actually about KIO (the I/O framework) or Baloo (the search frameworks). Remember to check the KDE related technologies list

Only perform reassignations if you are sure the bug is in the wrong product.

Set Bugzilla fields

Often a bug report isn't properly categorized, or lacks some information in the Bugzilla fields (which are useful for sorting and filtering). If a field isn't mentioned below, you don't need to change it. All users have permission to change most Bugzilla fields.


If the report has an application version, you need to set the version in the Bugzilla field. Ideally the version field should reflect the latest version the bug is reproducible with. If the version is missing in the list, please contact the software maintainer or the KDE Bugzilla admins to add the version.


Mark the bug's severity. Some hints about the various severity options:

  • Critical: A widespread, easily reproducible issue that causes data loss
  • Grave: The software is basically unusable, with no workaround
  • Major: A major feature is broken, and the workaround (if any) is painful and difficult
  • Crash: The software crashes or hangs
  • Normal: It's a bug that should be fixed, possibly with a reasonable workaround.
  • Minor: Minor cosmetic issue or loss of function with an easy workaround.
  • Wishlist: Request for a new feature or enhancement.


This field is only important if the bug is related to one distribution or a specific system (most of the bug reports are common to most of the platforms).


If the bug seems like it would be really easy to fix, add the "junior-jobs" keyword. Examples of issues that would be easy to fix:

  • Inaccurate description or text label
  • Visual layout inconsistencies
  • Pixellated icons when an app is run in HiDPI mode
  • User interface element is the wrong color when using Breeze Dark

New code contributors often start with "junior-jobs" bugs, so ensuring that there is a steady supply of bugs tagged with this keyword helps them get started with small, manageable tasks.

If the bug involves a poor user interface or demands a tedious workflow, tag it with the "usability" keyword, and it will be considered a part of KDE's "Usability & productivity" initiative.


If you can reproduce the issue, and you are confident that its Product is set correctly, set the bug report's status to CONFIRMED. This only applies to bugs; feature requests ("wishlist" items) don't need to be confirmed, since they're not bugs.

Rename the bug report, if necessary

The bug report's summary might not accurately represent the bug, especially after you have triaged the bug and found the root cause or determined it to be another issue. You may want to update the summary to contain enough information to identify the issue properly. A good summary:

  • Is readable as a grammatically correct English sentence
  • Contains a brief explanation of the root cause (if it was found)
  • Includes some of the symptoms people are experiencing
  • Includes ClassName::FunctionName pairs if the bug describes a crash
  • Isn't too long

Special circumstances

Bug describes multiple issues

You must close the bug report as RESOLVED INVALID with a humane explanation that bug reports can only contain a single issue. Remind the reporter about

Bug includes a patch

If the bug reporter or someone else included a patch, ask them to submit it using Phabricator, and remind them about

Reporter seems very technically knowledgeable

Sometimes a very technically knowledgeable bug reporter will correctly identify the source of the issue, and maybe even the exact line of code that's causing the problem. Encourage them to submit a patch, and point them to

Same person reports a lot of bugs

Anybody who reports a lot of KDE bugs--especially if they are high quality bugs--is quite likely a committed KDE user who is a good candidate for becoming a more involved contributor over time. Stumbling on someone like this in the bug tracker is like striking gold. Take every opportunity to develop a relationship with this person and try to guide them through the KDE "get involved" pipeline. Oftentimes people who submit a lot of bugs move on to bug triaging and then later development.

Useful Links

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