Comment 5 for bug 1873550

Well, I managed to install snaps like in native 20.04 and since that moment I do not experience any 1m30s timeout issue. Maybe it's not the solution, it has to be tested for some shutdowns.

In my Focal (19.10 upgrade) without any snap stuff installed:

First, obviously...:
apt install snapd

To not do:
snap install snap-store
because it installs snapd snap

To do:
snap install core
snap install core18
snap install snap-store --channel=stable/ubuntu-20.04
next refresh gnome and gtk-themes to the according channel
and following this way I don't have snapd installed

Well, I don't know if this will avoid the timeout issue but here I see two problems, as far as I can understand from my user POV:
1) installing snap-store snap does not install the Focal's attended snaps
2) installing snap-store from the 20.04 channel does not install gnome-3-34 and gtk-themes accordingly through the same 20.04 channel