Can't upgrade LyX on Focal Fossa

Liviu Andronic landroni at
Wed Jul 22 17:27:42 UTC 2020

On 7/22/20, Kees Zeelenberg <kzstatis at> wrote:
> Thanks for compiling. Synaptic (on Linux Mint 20) aborts installing
> LyX from the PPA with the messages:
> Vereisten: libqtcore4 (>=4:4.8.0) but it is not installable
> Vereisten: libqtgui4 (>=4:4.8.0) but it is not installable
> Vereisten: libqt4-svg  but it is not installable
> It seems Qt4 is no longer supplied on Focal.
Yes, for Ubuntu Focal, Qt4 was removed from the Ubuntu repositories.
To install LyX, you will also need to add the ppa:rock-core/qt4 PPA to
your sources (

I've now added a note on this on the PPA.


More information about the lyx-users mailing list