Well, we appear to have a solution. I downloaded the latest version, 6.4.2, ran it using the other script, found the top view no longer greyed out and bingo!
https://imgur.com/CWBU6LA.png
Some textures missing, but that should be an easy fix.
Incidentally, just running ./SweethHome3D rather than ...

Other script? I don't see one. I installed it from the repo, using the software manager.
https://imgur.com/CWBU6LA.png
The version on the website seems much bnewer, I'll try that instead.

I'm just using whatever driver came with the distro. It's Mint 19.3 and Intel video, not sure there are any other drivers available.

Thanks for your reply. I found the relevant section in the preferences, but it's greyed out.
https://imgur.com/i3ODoHR.png

Hi all, hoping someone can help here.
I had computer issues. I ended up installing linux and all's well.
However, when I installed SH3D, I noticed a slight difference in the way it behaves compared to the Windows version.

Compare these two images:
https://i.imgur.com/OEeHyeS.png

https://i.imgur ...