/var/lib/snapd/snaps/*.snap: can't open blockdev errors keep coming back despite several tries to remove totally snap

[Jeffrey Walton]

On Sun, Nov 12, 2023 at 11:09 AM Mario Marietto <marietto2008 at gmail.com> wrote:
>
> I'm running Ubuntu 23.10 on a I9 cpu + Nvidia Geforce RTX 2080 ti and the driver 545 right now. Everything works great,but not snap. I've tried to remove it as soon as I have installed Ubuntu from scratch,but something went wrong and now I see the following errors during boot :
>
>
> /var/lib/snapd/snaps/bare_5.snap: Can't open blockdev
> /var/lib/snapd/snaps/core22_607.snap: Can't open blockdev
> /var/lib/snapd/snaps/core22_864.snap: Can't open blockdev
> /var/lib/snapd/snaps/firefox_2517.snap: Can't open blockdev
> /var/lib/snapd/snaps/firmware-updater_109.snap: Can't open blockdev
> /var/lib/snapd/snaps/gnome-42-2204_141.snap: Can't open blockdev
> /var/lib/snapd/snaps/gnome-42-2204_87.snap: Can't open blockdev
> /var/lib/snapd/snaps/gtk-common-themes_1535.snap: Can't open blockdev
> /var/lib/snapd/snaps/snap-store_1046.snap: Can't open blockdev
> /var/lib/snapd/snaps/snap-store_959.snap: Can't open blockdev
> /var/lib/snapd/snaps/snapd_18933.snap: Can't open blockdev
> /var/lib/snapd/snaps/snapd_20290.snap: Can't open blockdev
> /var/lib/snapd/snaps/snapd-desktop-integration_83.snap: Can't open blockdev
>
>
> Anyway,snap seems to work ok (because I've reinstalled it with the purpose to remove it again when I was able to fix the errors) :
>
>
> # snap list
>
> Name         Version    Rev    Tracking       Publisher   Notes
>
> core         16-2.60.4  16202  latest/stable  canonical✓  core
> hello-world  6.4        29     latest/stable  canonical✓  -
>
> What I want to do really is to remove snap totally,including the errors that you see above. I tried different approaches,but none worked,errors keep coming back.

It's been a while since Iremoved Snap on a Ubuntu 22.04 machine. I
believe these are the steps I took:

1. Stop Snap service
2. Remove Snap with Apt, Apt-Get, etc. Also remove Firefox, and other
Snap warez.
3. Remove Systemd Snap files. This removes service files, links, etc.
Once the list looks good, delete them

    # find /etc -iname '*snap*'

4. Reboot the machine
5. Delete /var/lib/snap and friends
6. Disable Snap in APt:

    # cat /etc/apt/preferences.d/no-snap.pref
    Package: snapd
    Pin: release *
    Pin-Priority: -1

7. Enable PPAs for packages of interest:

   # cat /etc/apt/sources.list.d/mozillateam-ubuntu-ppa-jammy.list
   deb https://ppa.launchpadcontent.net/mozillateam/ppa/ubuntu/ jammy main

8. Install packages from PPA

Jeff