Ask Ubuntu is a question and answer site for Ubuntu users and developers. It's 100% free.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have found an example of a schema that is referred two in two different ways, differing only in case, which is confusing to me.

Gsettings sees the schema name as com.canonical.Unity.Launcher, and does not accept com.canonical.unity.launcher as a valid schema name. On the other hand, dconf-editor only sees com.canonical.unity.launcher all lower-case, as seen in the screenshot.

If I change the key favorites in Gsettings, that change is reflected in dconf-editor, and vice-versa.

What's going on? Which is the correct schema name, com.canonical.Unity.Launcher, or com.canonical.unity.launcher?


$ gsettings list-schemas | grep -i com.canonical.unity.launcher
david@david-Aspire-5735:~$ $ gsettings list-recursively com.canonical.Unity.Launcher
com.canonical.Unity.Launcher favorite-migration '3.2.10'
com.canonical.Unity.Launcher favorites ['application://firefox.desktop', 'application://thunderbird.desktop', 'unity://running-apps', 'unity://expo-icon', 'unity://devices']
david@david-Aspire-5735:~$ gsettings list-recursively com.canonical.unity.launcher
No such schema 'com.canonical.unity.launcher'


Screenshot of dconf-editor, cropped

share|improve this question
possible duplicate of Shouldn't dconf-editor and gsettings access the same database? – Sneetsher Apr 14 '14 at 1:09
I respect that is one older then the one I mention. But thought the newer one gives more references and better background info about this case. (If you, Flimm & @whtyger, agree with me) – Sneetsher Apr 14 '14 at 1:20
That question seems useful but not a duplicate of this one. This question is very specificly about case sensitivity. – Flimm Apr 14 '14 at 11:01
up vote 5 down vote accepted

Dconf schema tree is tricky and not always relevant to actual schema names.

For example, under apps you can find update-manager, but you will not find apps.update-manager schema using gsettings. Valid schema name is com.ubuntu.update-manager, and it isn't shown in Dconf where it actually should be. Correct schema name in Dconf can be found below the keys list, at the grey field with Description and Default value. (See screenshot) Topmost entry shows real Schema name.

So I'd trust gsettings output. In your case com.canonical.Unity.Launcher is the valid schema name and its case really matters.

Screenshot highlighting schema field

share|improve this answer
Interesting, I didn't notice the schema field in dconf-editor. If the tree path doesn't always match the schema name, what does it match? – Flimm Jan 17 '13 at 20:35
Maybe these schema names were changed during development process and weren't fixed in dconf frontend yet. Or simply forgotten. There are also several dconf settings that have no schema at all. org>gtk>settings>file-chooser, for example. I wonder how they can be changed using gsettings? – whtyger Jan 18 '13 at 13:34
BTW, these options without schemas can be changed using dconf in terminal. Check dconf --help for all options. For example, dconf write /org/gtk/settings/file-chooser/show-hidden true turns option on. Autocompletion of the key name works also when typing in terminal. Cool! – whtyger Apr 17 '13 at 10:15

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.