Le mardi 18 février 2020 14:50:04 UTC+1, Nektarios Katakis a écrit :
Στις 2020-02-18 12:41, Anastasios Lisgaras έγραψε:
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> Thank you for your answer. About "backports firmwares" what should I
> do?
> What do you have to recommend me?
> ( I didn't know that at all )
cf https://wiki.debian.org/Firmware
I think that the only firmwares installed are those you installed
yourself manually (if any), no one is automatically pulled by default.
as root:
# aptitude search firmware
would display most of the firmwares (it's a search by names containing
'firmware' and some firmwares do not contain 'firmware' in their
name). The status 'ii' means a firmware is installed.
What I meant previously is that it is preferable to have a firmware
(related to a hardware) that is coherent with the driver for this
hardware included in the kernel. So if you have a hardware that needs
a firmware and you use a Backports kernel, it is probably preferable
to install the Backports version of the needed firmware.
> Finally, a very important question:
> Can I go back to where I was before the update ( with only stretch
> source ) ?
You should definitely be able to do this since the `apt upgrade`
command
you
ran ended without any errors (your system is not broken anyhow).
> I mention this because the official documentation itself (and you)
> states that you do not recommend what I did.
>
> There is a way to "I pull a rope" and go back to my sturdy/robust port
> of stretch repositories/resources ?
Simply revert the changes sources (apt edit-sources) and
`apt update && apt upgrade`
[...]
I do not think this will do the trick: if I recall correctly, it will
end up with Backports packages marked something like 'local' or
'obsolete' without being downgraded to their Strech version.
The best solution would probably to do a fresh install.
But if you want to take the chance, here is a trick to downgrade:
https://wiki.debian.org/SystemDowngrade