Just migrated from 18.04 to 20.04. pdf files were associated with document viewer OK until I installed Vivaldi browser. Since that clicking a pdf file will open it in Vivaldi. It is possible to force it - but the option to make it default just is not there. in the Settings - Default Applications - there is no option for "document" of any kind at all

my computer is Dell Inspiron and the installation was made "from scratch".

1 Answer 1


You can change filetype associations by right-clicking a PDF in the file browser, select Properties -> Open with

Choose the Document Viewer and click Set as default and you should be good to go.

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