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$ snap --version
snap    2.67
snapd   2.67
series  16
ubuntu  24.04
kernel  6.8.0-52-generic

$ snap list
Name                 Version        Rev    Tracking       Publisher   Notes
canonical-livepatch  10.9.0         286    latest/stable  canonical✓  -
core20               20240911       2434   latest/stable  canonical✓  base
core22               20250110       1748   latest/stable  canonical✓  base
lxd                  5.0.4-497fe1e  31333  5.0/stable/…   canonical✓  -
snapd                2.67           23545  latest/stable  canonical✓  snapd

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sudo snap remove --purge canonical-livepatch
sudo snap remove --purge lxd
sudo snap remove --purge core20
sudo snap remove --purge core22
sudo snap remove --purge snapd

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$ snap list
No snaps are installed yet. Try 'snap install hello-world'.

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$ sudo systemctl stop snapd
Stopping 'snapd.service', but its triggering units are still active:
snapd.socket

$ sudo systemctl disable snapd
Removed "/etc/systemd/system/multi-user.target.wants/snapd.service".
Disabling 'snapd.service', but its triggering units are still active:
snapd.socket

$ sudo systemctl mask snapd
Created symlink /etc/systemd/system/snapd.service → /dev/null.
Masking 'snapd.service', but its triggering units are still active:
snapd.socket

$ sudo apt purge snapd -y
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
The following packages will be REMOVED:
  snapd* ubuntu-server-minimal*
...
Discarding preserved snap namespaces
Final directory cleanup
Removing extra snap-confine apparmor rules
Removing snapd cache
Removing snapd state

$ sudo apt-mark hold snapd
snapd set on hold.

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rm -rf ~/snap
sudo rm -rf /snap
sudo rm -rf /var/snap
sudo rm -rf /var/lib/snapd

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sudo cat <<EOF | sudo tee /etc/apt/preferences.d/nosnap.pref
Package: snapd
Pin: release a=*
Pin-Priority: -10
EOF

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$ sudo apt install chromium-browser
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 chromium-browser : PreDepends: snapd but it is not installable
E: Unable to correct problems, you have held broken packages.