Regarding the (main) s390x ttys:
SCLP line-mode terminal device driver /dev/sclp_line0
('Operating Systems Messages')
SCLP full-screen mode VT220 terminal device driver /dev/ttysclp0
('Integrated ASCII console', or z/VM)
Subiquity tui can only run in full-screen, not in line-mode.
There are two "consoles" in case of an LPAR - the "Operating Systems Messages"
(line-mode) where only low-level console messages are displayed, including the
installer boot messages that contain the temporary installer password,
and the "Integrated ASCII Console" (the emulated VT220 full-screen-mode) where
the subiquity tui can run - and is in fact started there automatically (this
still works and allows to complete an installation).
The z/VM console (by default) uses the 3215 line-mode, for the console
messages that include temporary installer password, but the Subiquity
tui can not run there (since it's line-mode), hence a remote ssh
installation is needed here.
Just notice that all this worked fine in the past - and even with the
early Impish images (about 06-14-2021 and before) and I do not think
that things changed that much.
And since paride tried a current impish amd64 ISO image, where the temp
installer password is also missing,things seems to be platform agnostic
and should not be cause by any of the special s390x consoles - I think.
What's missing is an output like this (see attached example.txt taken from a
20.04 installation), that provides lines like:
"
"Set the following 'random' passwords"
installer:x3Z9hgeXCPNDQC8VFeqK
"
and
"
It is possible to connect to the installer over the network, which
might allow the use of a more capable terminal and can offer more languages
than can be rendered in the Linux console.
To connect, SSH to installer@10.245.236.14.
You should use the preconfigured password passed to cloud-init.
The host key fingerprints are:
RSA SHA256:YTmNejNSf1OlzQbOcNzkcYrDzqfy9aoT1laAs+oca5k
ECDSA SHA256:MKGkFuNzdQ3aNBL33bhqapn8clpDD9ZIL2SLr24IDAI
ED25519 SHA256:NitkBIaBVl97j1E3AXOrQRNrfR89UChEFxbJWnYhtVE
"
and yes, I believe the output came from cloud-init.
And even earlier the random / temp. password was not only given
"somewhere" in the boot log, but also at the end (close to "To connect,
SSH to installer@10.245.236.14."), so that one didn't needed to scroll
through the messages to find it.
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https://bugs.launchpad.net/bugs/1933523
Title:
Temporary installer password and key fingerprints are not printed with
latest impish daily ISOs
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