5
You have to purge Pop OS PPA with
sudo apt-get install ppa-purge
sudo ppa-purge ppa:system76/pop
to transform the system back to ordinary Ubuntu. You can use Synaptic to determine left-overs of PopOS and to revert packages to official Ubuntu by specifying their versions.
Manual way is to parse output of saved dpkg -l for pop[0-9] package versions and pop- ...
1
This is a normal information message and not an error.
It informs you that your resume device is UUID=b0e7eead-39f6-4e20-a3c9-c40f0823e8e7.
There is nothing to worry about.
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