I am pretty sure there is a Linux specific forum, but I can't find it. Please tell me how I'd locate it without a link. It's not listed under the general forums and obviously isn't findable under the game specific ones.

Never saw it.

Maybe it's only accessible from the Linux version of Galaxy? (jk)

There are no OS-specific forums here, only language-specific and game/franchise-specific forums. The closest thing to a "Linux general discussion" place on GOG (of which I'm aware) is this sticky topic, though there are quite a few long-running Linux-related threads with more specific focuses.

There was this post on the civfanatics forum that maybe could help? Otherwise no idea.
https://forums.civfanatics.com/threads/buffy-005-launched-try-it-out-with-3-new-gauntlets.633206/page-3#post-15372258

Oh and Civ 4 on Linux
https://www.gog.com/forum/sid_meiers_civilization_series/civilization_iv_for_linux/page1

https://www.gog.com/forum/general/adamhms_linux_mint_beginners_guide

It's probably that one i think.

Dreaganous, look at your second link and see the last unanswered post being mine.

ThorChild, I think the sticky thread might be better than that one. Aside from said thread in general discussions, where else can I find help? I tried the civfanatics forum already.

Oh sorry yeah i completely read past the usernames there.
The only other placed you may find help would be steam/whine forum ?

Does somebody use Linux now?

Just lots of people in ever increasing numbers.