thank you very much for your replies! guiverc, especially for the material, knowledge and posted links! i'm coming back to this with a bit more time,...
You are showing the automount that clicking on it from a gui app like file browser gives, not a correct mount in fstab. It defaults to the label you...
Then it seems very unlikely the graphics (especially the Nvidia GPU) are the problem. Note that by default, your laptop uses the Intel GPU to run the...
You mention Ubuntu, but not which Ubuntu product (Server? Desktop? Core?) nor which release you're using, nor if using a release that has ISO choices...
Try installing gnome-tweaks then set preferences (fonts etc.).
Also there is Settings (global in top toolbar) and separate Settings (hamburger icon)...