Hi, i’m Nyora and i started use NixOS few days, and i’m still leaning about many things from system and bugs too lmao.
Some problems are occurred with me, but i have no idea what i do to fix…
If anyone can help, i’d be grateful 
show us your configuration.nix , also what hardware are you running?
You may need a patch for it or a slightly different kernel if it’s very very old hardware, or very very new hardware.
https://nixos.wiki/wiki/Configuration_Collection
some are a bit old, but there are some great pieces of nix code for inspiration.
and the sometimes overlooked
which can solve a lot of problems with esoteric hardware.
if your into the cool kids sway stuff, then the biggest nixos sway fan i know is
https://github.com/MatthewCroughan/nixcfg
it’s flake-efided (is that even a word), so it may be a little advanced for you at this start of your nix journey, but it should have some good idea’s for sway.
there is an old saying ‘good programmers write code, excellent programmers steal code’, so ‘stealing’ nix code is probably a great thing to do in your early steps, and then you can write some later on!
First of all, 21.05 or unstable?
- Randomly freezes (on Wayland)
Which DE?
- Firefox don’t open links, on Discord, Telegram etc. Any link out of Firefox, it doesn’t open if its open
MOZ_DBUS_REMOTE=1
- Thunar don’t keep with presets when i change something
Don’t use Thunar, sorry.
Thunar don’t keep with presets when i change something
you probably need programs.dconf.enable = true NixOS Search - Loading...
Sorry for reply now, i was without network. Well, let’s go…
My notebook is a Intel Celeron N2920 4GB RAM
https://termbin.com/ne2gi
21.05
sway
I’ve already enabled this, and doesn’t work 
I don’t use sway, so I can’t really help here, sorry.