I received several software updates from Ubuntu / Canonical updating Mesa and can now open blend files. I used version
blender-2.81-52bdf522afcd-linux-glibc217-x86_64. Note: I did not install the custom Mesa drivers from the PPA

@ Sebastian
The problem is the driver and not so the tech specs.

@Pinus
I the support is based on OpenGL and 1 GB of VRAM, this card reaches both the 3.3 OpenGL version and the memory which I think is right in the edge of support.
Btw I know I need an update, but I've listened people working in similar hardware like this GTX 660... which also have this kind of problems.

@ Sebastian:
Your Graphic-Card is to old, with Blender 2.8 the minimum requirement is a Nvidia GTX 660 (released 2012)
The 8400GS was released in 2007 or so... For 60 € you can get a GTX 760/770 on ebay (a huge step forward... ; ))

Thanks, Looks like another ticket has been re-opened by Brecht Van Lommel (brecht) "We can't assume our user are running the very latest drivers on Linux. Running Blender on common Linux distributions should not require installing custom drivers to be able to open files."
https://developer.blender.org/T69461

Please update your device drivers. if that didn't help you can reopen a new task.

In T57296#544976, @Lawrence (hhal9000) wrote:

Thanks Clement,
I'm now able to open Blender 2.8

Please do not reply on closed bugs. Your crash happens on different hardware, this report was original targetting HD 3000. And you're machine is running on an NVidia card, where it crashes inside the NVidia driver.
Please make sure you have install your latest drivers for your GPU, and when reporting a bug please follow the guidelines. What in this case means providing the system-info.txt generated from blender Help -> Save System Info.
Also please provide if Blender 2.80 is working for you.

I'm not sure why this bug was closed. I get this using a build that I retrieved today, 2019-08-31.

This might get a bit to get used to, but afaict, this is not a bug.
Thx for the report anyways, closing...

It is very uncomfortable

Yeah! tooltips are confusing why, however that's by comma means Shift + Space then numbers

Hmm, this does work, but in the tooltip, numbers are separated by commas, as is the case with other hotkeys

In T68819#756456, @Aleksandr (cfnjrey) wrote:

Number hotkeys (not num-pad) not assigned in sculpt mode

Number hotkeys (not num-pad) not assigned in sculpt mode

Number hotkeys (not num-pad) not assigned in sculpt mode, I think. So it's not a bugs/error.. Maybe feature request or something else

Supported for macOS 32 bit was dropped a few years ago already.

What about MAC OS?

bye bye 32 bit world, we'll meet again in 20 years among the Retro Geeks.