Home / ubuntu / Questions / 39852
Accepted
Xiè Jìléi
Asked: 2011-05-04 15:26:17 +0800 CST

How to remove warnings like `Unknown media type ...` [duplicate]

  • 772

Each time apt-get tries to process triggers for shared-mime-info, it reports warnings like:

...
Processing triggers for shared-mime-info...
Unknown media type in type 'all/all'
Unknown media type in type 'all/allfiles'
Unknown media type in type 'uri/mms'
Unknown media type in type 'uri/mmst'
Unknown media type in type 'uri/mmsu'
Unknown media type in type 'uri/pnm'
Unknown media type in type 'uri/rtspt'
Unknown media type in type 'uri/rtspu'
Unknown media type in type 'interface/x-winamp-skin'

I've checked /usr/share/mime-info but doesn't see any of them:

/usr/share/mime-info$ grep 'url/rtspu' *
(Got nothing)

So, how to clean up my system so it won't report these unknown media types?

aptitude

4 Answers

  1. Backup the file that is causing the errors and update the systems mime database:

    sudo mv -vi /usr/share/mime/packages/kde.xml /usr/share/mime/packages/kde.xml.bak
sudo update-mime-database /usr/share/mime

    This should fix the warnings.

    • 45
  2. Best Answer

    This was discussed in Why does update-mime-database complain about uri/rtspt and other unusual types? It is caused by kde.xml and they have not fixed it yet. Here is a bug report.

    Also it's uri/rtspu, not url/rtspu you should be grepping.

    • 17

  3. You should check /usr/share/mime/packages for the specific xml that contains the phrase you get .

    For example, my problem was Unknown media type in type 'chemical/...... I found the file /usr/share/mime/packages/chemical-mime-data.xml.

    Using cat on the file showed me that the package was the same chemical-mime-data V 0.94

    So I ran:

    sudo apt-get remove chemical-mime-data
    • 10
    • 6