[Bug 1961418] Re: snap failed to run with '/usr/bin/snap wait system seed.loaded'

[Ian Johnson]

So indeed your system is still using upstart, in order to use snapd you
will need to switch your system over to use systemd instead. Likely one
of the upgrade scripts from 10.04 to 16.04 did not transition from
upstart to systemd the way a fresh install of 16.04 would default to.

** Changed in: snapd (Ubuntu)
       Status: Incomplete => Won't Fix

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Title:
  snap  failed to run with '/usr/bin/snap wait system seed.loaded'

Status in snapd package in Ubuntu:
  Won't Fix
Status in systemd package in Ubuntu:
  New

Bug description:
  I tried to enable livepatch without any success.  ([Bug 1960689] )

  support suggested me report a bug for snapd.

  
    root at plis231v:~# sudo ua enable livepatch
    One moment, checking your subscription first
    Unexpected error(s) occurred.
    For more details, see the log: /var/log/ubuntu-advantage.log
    To file a bug run: ubuntu-bug ubuntu-advantage-tools

    >> logs

    22-02-11 22:27:00,410 - util.py:(429) [DEBUG]: Reading file: /var/lib/ubuntu-advantage/notices.json
    2022-02-11 22:27:00,410 - util.py:(700) [DEBUG]: Writing file: /var/lib/ubuntu-advantage/notices.json
    2022-02-11 22:27:00,411 - cli.py:(1499) [ERROR]: Unhandled exception, please file a bug
    Traceback (most recent call last):
      File "/usr/lib/python3/dist-packages/uaclient/cli.py", line 1458, in wrapper
        return func(*args, **kwargs)
      File "/usr/lib/python3/dist-packages/uaclient/cli.py", line 1544, in main
        return args.action(args, cfg=cfg)
      File "/usr/lib/python3/dist-packages/uaclient/cli.py", line 166, in new_f
        return f(*args, **kwargs)
      File "/usr/lib/python3/dist-packages/uaclient/cli.py", line 189, in new_f
        return f(args, cfg=cfg, **kwargs)
      File "/usr/lib/python3/dist-packages/uaclient/cli.py", line 147, in new_f
        retval = f(*args, cfg=cfg, **kwargs)
      File "/usr/lib/python3/dist-packages/uaclient/cli.py", line 888, in action_enable
        ent_ret, reason = entitlement.enable()
      File "/usr/lib/python3/dist-packages/uaclient/entitlements/base.py", line 197, in enable
        ret = self._perform_enable(silent=silent)
      File "/usr/lib/python3/dist-packages/uaclient/entitlements/livepatch.py", line 160, in _perform_ena
        [snap.SNAP_CMD, "wait", "system", "seed.loaded"], capture=True
      File "/usr/lib/python3/dist-packages/uaclient/util.py", line 662, in subp
        out, err = _subp(args, rcs, capture, timeout, env=env)
      File "/usr/lib/python3/dist-packages/uaclient/util.py", line 619, in _subp
        stderr=err.decode("utf-8"),
    uaclient.util.ProcessExecutionError: Failed running command '/usr/bin/snap wait system seed.loaded' [sage: error: cannot communicate with server: Get http://localhost/v2/snaps/system/conf?keys=seed.load /run/snapd.socket: connect: no such file or directory

    ProblemType: Bug
    DistroRelease: Ubuntu 16.04
    Package: ubuntu-advantage-tools 27.4.1~16.04.1
    ProcVersionSignature: Ubuntu 4.15.0-167.175~16.04.1-generic 4.15.18
    Uname: Linux 4.15.0-167-generic x86_64
    ApportVersion: 2.20.1-0ubuntu2.30+esm3
    Architecture: amd64
    Date: Fri Feb 11 23:01:08 2022
    InstallationDate: Installed on 2010-12-02 (4089 days ago)
    InstallationMedia: Ubuntu-Server 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.2)
    ProcEnviron:
     TERM=xterm
     PATH=(custom, no user)
     LANG=en_US.UTF-8
     SHELL=/bin/bash
    SourcePackage: ubuntu-advantage-tools
    UpgradeStatus: Upgraded to xenial on 2017-01-21 (1847 days ago)

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