[Bug 2138792] [NEW] [Ubuntu26.04] [FW1110] : Installer crashes while trying to "Update the Installer" with ConnectionRefusedError!

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== Comment: #0 - Anushree Mathur <Anushree.Mathur2 at ibm.com> - 2026-01-13 23:52:27 ==
OS : Ubuntu26.04
When I am trying to install the host or guest I get the option in the installer as: 

                        [ Update to the new installer ]
                        [ Continue without updating   ]
                        [ Back                        ]

I chose "Update to the new installer" option and after sometime when I
pressed enter it crashed with the following trace.

connecting...
generating crash report
report saved to /var/crash/1768367924.892252207.ui.crash
Traceback (most recent call last):
  File "/snap/subiquity/6911/usr/lib/python3/dist-packages/aiohttp/connector.py", line 1412, in _create_connection
    _, proto = await self._loop.create_unix_connection(
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/snap/subiquity/6911/usr/lib/python3.12/asyncio/unix_events.py", line 261, in create_unix_connection
    await self.sock_connect(sock, path)
  File "/snap/subiquity/6911/usr/lib/python3.12/asyncio/selector_events.py", line 651, in sock_connect
    return await fut
           ^^^^^^^^^
  File "/snap/subiquity/6911/usr/lib/python3.12/asyncio/selector_events.py", line 659, in _sock_connect
    sock.connect(address)
ConnectionRefusedError: [Errno 111] Connection refused

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/snap/subiquity/6911/usr/bin/subiquity", line 8, in <module>
    sys.exit(main())
             ^^^^^^
  File "/snap/subiquity/6911/lib/python3.12/site-packages/subiquity/cmd/tui.py", line 161, in main
    asyncio.run(run_with_loop())
  File "/snap/subiquity/6911/usr/lib/python3.12/asyncio/runners.py", line 194, in run
    return runner.run(main)
           ^^^^^^^^^^^^^^^^
  File "/snap/subiquity/6911/usr/lib/python3.12/asyncio/runners.py", line 118, in run
    return self._loop.run_until_complete(task)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/snap/subiquity/6911/usr/lib/python3.12/asyncio/base_events.py", line 687, in run_until_complete
    return future.result()
           ^^^^^^^^^^^^^^^
  File "/snap/subiquity/6911/lib/python3.12/site-packages/subiquity/cmd/tui.py", line 159, in run_with_loop
    await subiquity_interface.run()
  File "/snap/subiquity/6911/lib/python3.12/site-packages/subiquity/client/client.py", line 426, in run
    await super().run()
  File "/snap/subiquity/6911/lib/python3.12/site-packages/subiquitycore/tui.py", line 390, in run
    await super().run()
  File "/snap/subiquity/6911/lib/python3.12/site-packages/subiquitycore/core.py", line 133, in run
    raise exc
  File "/snap/subiquity/6911/lib/python3.12/site-packages/subiquity/ui/views/help.py", line 433, in get_ssh_info_and_redraw
    await self._get_ssh_info()
  File "/snap/subiquity/6911/lib/python3.12/site-packages/subiquity/ui/views/help.py", line 426, in _get_ssh_info
    self.ssh_info = await self.app.wait_with_text_dialog(
                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/snap/subiquity/6911/lib/python3.12/site-packages/subiquitycore/tui.py", line 206, in wait_with_text_dialog
    return await self._wait_with_indication(awaitable, show_load, hide_load)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/snap/subiquity/6911/lib/python3.12/site-packages/subiquitycore/tui.py", line 166, in _wait_with_indication
    result = await awaitable
             ^^^^^^^^^^^^^^^
  File "/snap/subiquity/6911/lib/python3.12/site-packages/subiquity/common/api/client.py", line 75, in impl
    async with make_request(
  File "/snap/subiquity/6911/usr/lib/python3.12/contextlib.py", line 210, in __aenter__
    return await anext(self.gen)
           ^^^^^^^^^^^^^^^^^^^^^
  File "/snap/subiquity/6911/lib/python3.12/site-packages/subiquity/common/api/client.py", line 151, in make_request
    async with session.request(
  File "/snap/subiquity/6911/usr/lib/python3/dist-packages/aiohttp/client.py", line 1187, in __aenter__
    self._resp = await self._coro
                 ^^^^^^^^^^^^^^^^
  File "/snap/subiquity/6911/usr/lib/python3/dist-packages/aiohttp/client.py", line 574, in _request
    conn = await self._connector.connect(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/snap/subiquity/6911/usr/lib/python3/dist-packages/aiohttp/connector.py", line 544, in connect
    proto = await self._create_connection(req, traces, timeout)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/snap/subiquity/6911/usr/lib/python3/dist-packages/aiohttp/connector.py", line 1418, in _create_connection
    raise UnixClientConnectorError(self.path, req.connection_key, exc) from exc
aiohttp.client_exceptions.UnixClientConnectorError: Cannot connect to unix socket /run/subiquity/socket ssl:default [Connection refused]

Ubuntu Resolute Raccoon (development branch) ubuntu-server hvc0


After this it comes back to the installer and then it won't ask this option again to update the installer and the installation proceeds fine.

** Affects: subiquity
     Importance: Undecided
         Status: New

** Affects: subiquity (Ubuntu)
     Importance: Undecided
     Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
         Status: New


** Tags: architecture-ppc64le bugnameltc-216966 severity-medium targetmilestone-inin2610
-- 
[Ubuntu26.04] [FW1110] : Installer crashes while trying to "Update the Installer" with ConnectionRefusedError!
https://bugs.launchpad.net/bugs/2138792
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