r/COSMICDE

I installed Cosmic on Artix Linux, and my first impressions are good—the desktop environment is super nice. But I’ve noticed a few bugs.

I have an LG 32-inch OLED dual‑Hz display. With a button click on the monitor, I can switch between 4K at 240 Hz and 1080p at 480 Hz. However, in the display settings, I can also select 1080p at 480 Hz without using the monitor button switch, which shouldn’t be possible what coude cause this is this

i see tho that in the osk of the display it restricts it to 144hz at 1080p if the button is not cliked so just a vissual bug

I heard how Cosmic evolved as a DE and all the great things about it, but I was wondering, how good and stable Cosmic really is, and I figured that I should ask people that used it and are using it rather then listen to one or two videos that are hyping it up. I’m currently using KDE and Cosmic seems interesting, but I don’t want to go through the process of setting things up again only to realize that the DE is a buggy mess.

So after recent Chrome update few days ago youtube videos cannot be watched in fullscreen on COSMIC:
- upon maximizing video after roughly 1s video returns from fullscreen and it plays in regular embedded mode.

The only workaround i found is to launch chrome with --ozone-platform=x11 arg so it's Wayland related again.

Anyone noticed it. Is it already reported?

A few days ago, I had a dream that I got some sort of package in the mail. I want to say it was some piece of clothing. It had a felt, almost velcro-like tag on it that said COSMIC 44, the cosmic logo and what I presume to be 44 for Fedora 44. I remember talking with my cousin in the dream about the tag. This is insanely mundane when it comes to the dreams that normally I have, so it stood out to me.

I took this as a sign to try cosmic. I loaded the Fedora cosmic spin onto my ventoy USB and installed it on my main laptop. I'm glad I did, I'm really liking the cosmic DE so far. I kinda wish I installed it earlier.

I like fully featured DEs and I like both floating and tiling WMs, so it makes sense why I like it so much. I will probably have it as my primary DE on my laptop and then install it onto my main PC when epoch 2 or 3 comes out.

Hey everyone!

I often find myself thinking about COSMIC's potential and how awesome the interface would look with a visual refresh to make everything more consistent. I’m fully aware that the System76 team is swamped with much heavier priorities right now (focusing on stability, core features, the Epochs timeline, etc.) and that theme polishing probably isn't on their immediate radar.

But I was wondering: if I were to create a theme/layout proposal myself and send it to their team, do you think there’s any openness to the community validating or approving that kind of contribution (even if it falls outside the scope of the current Epoch)?

Also, does anyone know the best channel to have a direct chat with the folks handling the project's design/UX? (Mattermost, GitHub, etc?)

If anyone knows how their visual contribution workflow works, I’d appreciate the help!

So i have very fidgety headphones that come off super easy.

With Kde plasma, if i set my speakers to 5%, and my headphones to 100%, if i unplugged my headphones, the speakers would go back to being 5%.

On COSMIC, however, (Tested on PopOS) if i set my speakers to 5%, then my headphones to 100%, if i unplugged my headphones, my speakers would blast at 100%

Which is very scary! I'm wondering if theres anyway to fix this because besides that one issue im a pretty basic user and would love to use cosmic fulltime. Any help is appreciated

Hello, I am on freshly updated Fedora Cosmic Atomic and I really like it, but Qt apps from flatpak specifically misbehave when it comes to SSDs - I also can't double click the titlebar to maximize them for some reason.

GTK/adwaita apps look fine and perform fine in that regard.

Is that specifically COSMIC thing not supporting Qt flatpak well enough or is it something else?

So Ive heard that it's rolling out on like cosmic epoch 2 but I don't really remember the source and it was weird and yeah animations are the only thing keeping me from switching

Just did a system update on Arch Linux and now I have a bunch of colorful flickering on cosmic. The issue is not there on other DEs. Anyone else have this issue? I've had cosmic as my daily driver for many months without this issue.

When I run cosmic-screenshot, I get this error: "Error taking screenshot: Portal request didn't succeed: Other"

**Relevant Logs:**

2026-08-06 17:50:02 upgrade cosmic-comp:amd64 ... -> 0.1~1785355703~24.04~091583a

[cosmic-comp error / log excerpt showing failed import of I915_y_tiled_ccs buffer]

Anyone know how to fix this?