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Thanks for the quit reply. I followed those instructions, it seemed that all those libraries were already installed. Freeview still won’t launch (even after rebooting).

Here’s the output of the second command you suggested:

alexlw@alexs:~$ sudo apt-get install libx11-dev libxext-dev libxrandr2 libxrender-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
libxext-dev is already the newest version (2:1.3.3-1).
libxext-dev set to manually installed.
libxrandr2 is already the newest version (2:1.5.0-1).
libxrender-dev is already the newest version (1:0.9.9-0ubuntu1).
libxrender-dev set to manually installed.
libx11-dev is already the newest version (2:1.6.3-1ubuntu2.2).
The following packages were automatically installed and are no longer required:
guile-2.0-libs hdf5-helpers libaec-dev libavcodec-dev libavformat-dev
libavutil-dev libfontconfig1-dev libgc1c2 libgl2ps-dev libgsasl7
libhwloc-dev libibverbs-dev libjbig-dev libkyotocabinet16v5 libllvm5.0
liblzma-dev libmailutils4 libnetcdf-cxx-legacy-dev libntlm0 libnuma-dev
libopenjp2-7 libopenmpi-dev libswresample-dev libswscale-dev libtiffxx5
libxft-dev libxss-dev mailutils-common mpi-default-dev python3-boto tcl-dev
tcl8.6-dev tk-dev tk8.6-dev
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 41 not upgraded.

Any other ideas?

Thanks a million

Alex

On Sep 7, 2020, at 12:21 AM, fsbuild <fsbuild@contbay.com> wrote:

Hello Alex,

I’m not sure Ubuntu 16.04 LTS has everything installed by default that the Qt graphics framework is looking to run in the X windows server.

You could try installing,

$ sudo apt-get update
$ sudo apt-get install libx11-dev libxext-dev libxrandr2 libxrender-dev

- R.

On Sep 7, 2020, at 01:52, Alex White <alexander.l.white@gmail.com> wrote:

Qt: XKEYBOARD