On 19.3: apt-get upgrade safe? universe-repo as well?

Hi everyone,
I am sorry for my basic questions but I hope to contribute in a way that will be helpful for others in the end too at least.
This is a very nice webpage:
And I learned some things there.

I was wondering if a step like this:
‘sudo apt-add-repository universe’

And ‘apt-get upgrade’ in general is recommended and considered ‘safe’?
Am I (at some point) likely to kill my Nvidia-GPU-driver compability with Xorg or such?

Thanks for advice/experience/hints,

I would recommend Updating the Ubuntu 14.04 distribution via
sudo apt-get update
sudo apt-get upgrade
it did not break my rootfs yet,
but it is needed to be careful with X-Server packages and
driver packages which could overwrite Nvidia packages and drivers.
-adding the universe repo does not cause any problems


Best Regards,
Peter Bauer

After you have installed or upgraded any packages, and wish to check if it interfered with nVidia’s extra files, run:
sha1sum -c /etc/nv_tegra_release

This does not include everything, e.g., the module directory has nVidia’s “extra” subdirectory, but I think the checksums cover the normal library type files.