If anyone wants to give an ELI5 or a link to a video that ELI5 I'd be incredibly thankful
I swear that all the stuff I find is like super in depth technical stuff that just loses me in no time flat
this post was submitted on 29 Apr 2024
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Programs running graphically (Firefox, your file browser, etc.) need a way to tell the system "draw these pixels here". That's what the display server does; it takes all these applications, works out where their windows are and manages that pixel data.
XOrg has historically been the display server in common use, but it's very old and very cobbled together. It generally struggles with "modern" things that must people expect today. Multimonitor setups, vsync, hdr and all that. They work, but support is hacked together and brittle.
Wayland is a replacement for XOrg that was designed from scratch to fix a lot of these issues. But it's been an uphill battle because XOrg is the final boss of legacy codebases.
tl;dr They're both software that manages drawing pixels from applications to the display.
The TLDR was really helpful NGL
So it's software that handles software wanting to display things on the screen. Because having each piece of software do it itself would be not only chaos but a massive security concern. And it's a big deal because it fixes (by replacing) the old software with something that's easier to work with than the old ways of doing things (due to all new code that's not spaghetti that's hacked together over decades).
Am I close?
Not really, the main point is that (most) apps don't know where they are on the screen, whether they're minimized, on the active workspace, ... and they don't care either. That's the responsibility of the window manager.
The app tells the display server "I need a window to display these pixels" and that's it. And the window manager, well, manages these windows.
On the topic of security, X11 doesn't handle security at all, that's one of the main issues. So any graphical app can read the other windows' pixels, grab everything you type, everything you copy, ... OTOH Wayland isolates apps so they can't do that by default. Apps that really need to (screenshot apps, ...) can use "portals" to ask for these permissions.
Does it also handle key and mouse inputs to make sure they're interpretted by the right programme in the right context?
Yep that's also the WM's job.