Installing 21.04

Tue Apr 27 20:00:00 UTC 2021

From: "Liam Proven" <lproven at gmail.com<mailto:lproven at gmail.com>>
Date: Tuesday, 27 April 2021 at 18:35:33
To: "Ubuntu user technical support, not for general discussions" <ubuntu-users at lists.ubuntu.com<mailto:ubuntu-users at lists.ubuntu.com>>
Subject: Re: Installing 21.04

On Tue, 27 Apr 2021 at 17:11, Hans via ubuntu-users
<ubuntu-users at lists.ubuntu.com> wrote:
>
> Hi all,
>
> In the system requirements I read that I need (at least) 4GB of memory.
> How strict is this number? My systems all have 2GB, and video uses a part of it, and I did experience troubles during installing 20.04.

2GB is *very* little by modern standards. For a contemporary PC, 8GB
is a small amount of RAM, 16GB is moderate, 32GB is good. My
home-office machine has 12GB and it's starting to struggle.
Since distro’s embraced systemD and journald, the mem footprint drastically increased. (This might be coincidence)

The limitation of not being able to access all of 4GB of RAM is why
most modern OSes moved to 64-bit, that is x86-64. x86-32 maxes out at
3-and-a-bit gigabytes.

However x86-64 is a little less efficient than x86-32. x86-64 code
uses more memory. So, something marginal with a 32-bit OS is
below-marginal for a 64-bit OS.

2GB is marginal for 32-bit OSes, and so below marginal for 64-bit. I
would say 4GB is the cutoff for 64-bit OSes. If you have less than
4GB, stick with 32-bit OSes or add more memory.

> After installing, my requirements are modest: network-manager (for handling lan/WiFi/wlan), Firefox, evince (reading PDFs), cups (for printing).

So, you want a GUI with a desktop.

That is not minimal by modern standards, I'm afraid.

It is usable for a server with no graphical interface, and even then it's low.

> Any chance? Experiences?

Ubuntu 18.04 and 20.04 no longer offer 32-bit editions. They are 64-bit only.
I’m already using 64-but since 14.04.
There’s hardly any difference in mem consumption.

You might be able to use one of the lighter-weight desktops such as
Lubuntu or Xubuntu, but it will be sluggish.

If you cannot upgrade your machines, then I would suggest you consider
switching to a distribution that still offers a 32-bit edition. There
Unfortunately, we’re stuck with a supplier only making a (tiny in size) driver, only for Ubuntu-lts, and Cent-OS. So, stuck.
are a few left:
* Debian
* Mageia
* Raspberry Pi OS

Alas, upgrading ain’t no option.
For two machines, no problem, for 20, neither.
But in my case: over 20,000 machines!
So, no show.

There are many more niche ones, such as Void Linux, but they require
considerable technical skill.

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