Is your network connection effectively timing out? Reviewing the download progress of packages, elapsed times (assuming I'm reading them correctly as minutes:seconds) seem quite slow. Perhaps try renewing your connection, checking DL speeds independently?
TeXstudio checks which packages are installed on startup. When you \usepackage one it didn't find, this is marked as "not found" (being underlined in green).
When you install a package after starting TeXstudio, either using MiKTeX's install-on-the-fly feature or manually through the package manager, TeXstudio does not know about this. It will still mark the ...
for me it helped to simply restore the default settings in TeXstudio via "Options>Restore Default Settings".
When choosing this option, TeXstudio then informs you that you have to manually restart TeXstudio after its settings have been restored to their default values and if you click okay, the program is closed. I opened TeXstudio again after this and ...
It is recommended that do not install TeXLive from Ubuntu repository. Get latest TexLive 2019 from CTAN repository and install it. First remove previous installed packages and MikTex.
sudo apt-get remove texlive-*
Go to the folder which you downloaded, and run the following command:
sudo perl install-tl --gui=perltk
From all the comments to the question and my experience after using them I write up an answer:
If you want to create symlinks to standard directories after the install, do not try to run the install script install-tl, but rather use the native TeX Live manager tlmgr.
tlmgr path add
will attempt to symlink to standard directories. You need the necessary ...