I have had the issue, that I couldn't start a programme. I have read that the following command would fix it:
sudo ln -sf /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/ /usr/bin/
and
export QT_DEBUG_PLUGINS=1
Trying these commands did not resolve the issue. I now have lost all my free space got lost (0 bytes free) and cannot log-in with my user account (after typing the password screen gets black for less then a second and I end up on the log-ins screen).
However, I can log in with the root account.
Furthermore:
root@debian:~# ls -ld /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/ /usr/bin/
drwxr-xr-x 2 root root 94208 Jul 14 14:59 /usr/bin/
drwxr-xr-x 2 root root 4096 May 31 23:41 /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/
Update: Googling 'debian bounce back to login screen' brought the clue, that something with the X-related scripts might be wrong.
Now: how can I undo / fix this issue (or these issues)? It might be unrelated to the operations done, however all my free space is gone, even after deleting some files.
ls -ld /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/ /usr/bin/
to your question.ln
command only creates in/usr/bin
a symbolic link fromplatforms
to/usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/
.ln
exactly as described, then the cause is somewhere else.ldd /usr/lib/qt/plugins/platforms/libqxcb.so
command, yet there is no folder such as./qt/.
. Does that maybe give a hint?