How to get eth0 and wlan0 back on Ubuntu Mate 18.04?

[Bo Berglund]

On Wed, 27 Jan 2021 10:35:30 +0100, Ralf Mardorf via ubuntu-users
<ubuntu-users at lists.ubuntu.com> wrote:

>On Wed, 27 Jan 2021 10:18:06 +0100, Bo Berglund wrote:
>>But the first part of this instruction is not clear since it says to
>>"add" to /etc/default/grub like this:
>
>Hi,
>
>I can't speak for other languages, but related to
>https://www.dict.cc/?s=add , the translation of the English word "add"
>to German is unambiguous.
>
>If you "add" (as I understand it)
>
>net.ifnames=0 biosdevname=0
>
>to
>
>GRUB_CMDLINE_LINUX="resume=UUID=<long guid string>"
>
>the result is
>
>GRUB_CMDLINE_LINUX="resume=UUID=<long guid string> net.ifnames=0 biosdevname=0"
>

Yes, semantically speaking it is like that or it could also be like this:

GRUB_CMDLINE_LINUX="resume=UUID=<long guid string>" "net.ifnames=0
biosdevname=0"

So since there are quotes around what is proposed to be put into
GRUB_CMDLINE_LINUX and the proposed entry looks like 2 separate commands, should
then the added command just be stuffed inside the existing quote or inside a
separated quoted entry in order to be "added".
Quite often when one has other commands with arguments and these contain spaces
one uses quotes to package the whole string as one argument so it does not get
split.
But in this case it looks problematic since the proposed argument does contain a
space and this could be the reason for the quote around it...

I don't want to brick the laptop because of an error here (since if GRUB fails I
suspect Ubuntu won't even start up...


-- 
Bo Berglund
Developer in Sweden