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r/COSMICDE

▲ 10 r/COSMICDE+1 crossposts

After the latest COSMIC Epoch 1.0.1 update, OrcaSlicer stopped working for me.

I made a mistake in the title — the version I’m using is 1.0.13.

After the latest COSMIC Epoch 1.0.13 update, OrcaSlicer stopped working for me.

The app only works under X11, but now something very strange happens: when I launch it, a window appears, but everything is completely invisible. I can tell the application is running and there is a window there, but nothing is rendered.

I’m using the Flatpak version, and this is the command output:

flatpak run com.orcaslicer.OrcaSlicer

New Flatpak data dir: "/home/natsu/.var/app/com.orcaslicer.OrcaSlicer/config/OrcaSlicer"
Inconsistent value (1) for DRI_PRIME. Should be < 1 (GPU devices count). Using: 0
Inconsistent value (1) for DRI_PRIME. Should be < 1 (GPU devices count). Using: 0

I’m not sure where this issue should be reported or what information I should include in the report. Has anyone else experienced this after the COSMIC update?

reddit.com
u/Professional-Ant5498 — 3 days ago
▲ 24 r/COSMICDE

Cosmiception - Pop OS Cosmic on Fedora Cosmic Spin with full GPU Passthrough

Managed to get Pop OS cosmic running on Fedora 44 Cosmic spin with full AMD GPU passthrough and sunshine + moonlight 4K streaming.

The process is certainly a lot easier compared to my passthrough efforts back in 2020. You can even compile and enable Vulkan gpu offload on host if you don't need to pass through the GPU for gaming.

By comparison, it is currently not possible to run Ubuntu 26.04 in the VM with gnome + passthrough AMD GPU as there is a memory leak somewhere that eats up RAM in the VM after a few minutes.

u/b_pop — 4 days ago
▲ 3 r/COSMICDE+1 crossposts

qbittorrent flatpak not working all of a sudden

the flatpak of qbittorrent doesn't open no matter what I try. When I try running flatpak run org.qbittorrent.qBittorrent, I get QIBusPlatformInputContext: invalid portal bus. I am unable to open the appimage version of qbittorrent as well.

Edit: version 5.1.2 appimage works fine for me. Something seems wrong with the latest version 5.2.0.

reddit.com
u/VariableLynx — 5 days ago
▲ 0 r/COSMICDE

Window Manager Icons are Inconsistent

There seems to be an inconsistency with the window manager icons across some applications. In certain apps, the minimize, maximize, and close buttons change not only their icon style, but sometimes even their size.

Are there any plans to standardize these buttons so they remain visually consistent across all applications, using the same theme and icon style throughout COSMIC?

reddit.com
u/SoftManufacturer727 — 5 days ago
▲ 19 r/COSMICDE

Is cosmic ready for daily driving ?

when I was distrohopping I used popOS cosmic for a few days it was fast and responsive but didn't use it for much long tho .. but people have been saying it still needs some time even tho it released as "stable" do I give it a try now while I am going with arch now or wait for epoch 2 ? I was going with arch gnome but I really liked cosmic when I first tried it

reddit.com
u/Vox-Phoenix — 12 days ago
▲ 5 r/COSMICDE+1 crossposts

Default/Gear Application Item for Games and Some Programs

When I launch games and select programs, I'll get the default application icon instead of the program icon. I know this isn't because the icon file is missing (I can see them in the applications menu). I've also seen this application icons display properly on other distros I've tried. Am I doing something wrong, or is this something which will be addressed later in Cosmic's development? Thanks!

reddit.com
u/TheJuggernoob — 9 days ago
▲ 16 r/COSMICDE

YapCap is now in the COSMIC Store: panel usage tracking for developers using Codex, Claude and Cursor

I've just released YapCap v0.4.0. The applet is now available in the COSMIC Store as a Flatpak package, so you can install it from there and get updates as they come out.

Features:

  • Tracks Codex, Claude Code, and Cursor usage from the COSMIC panel.
  • In-app sign-in for each provider, easy to set it up
  • Multiple account support, so you can add both work and personal accounts for a provider
  • Active account tracking
  • Full COSMIC theme support, accent color and dark/light theme.
  • Bunch of customization options

Check out the repo:
https://github.com/TopiCsarno/yapcap

u/topi28 — 9 days ago
▲ 60 r/COSMICDE+1 crossposts

Papyrus just got merged into cosmic-flatpak — animated wallpapers are coming to the COSMIC app store 🎉

Papyrus, the animated wallpaper manager I built for Pop!_OS COSMIC, just got merged into cosmic-flatpak (PR #164). It'll be installable directly from the app store soon.

For those who missed the earlier post Papyrus lets you set any video (MP4, WebM, MKV, AVI, MOV) as a live wallpaper, and automatically extracts the dominant accent color from the wallpaper and applies it to your entire COSMIC desktop. Dark/light mode detection, start on login, no accounts, no telemetry.

GitHub: https://github.com/PSGtatitos/papyrus

u/PSGtatitos — 12 days ago
▲ 5 r/COSMICDE

Game opens, I can hear it, steam says it's open but window can't be found!

Very strange problem I'm having. I am on fedora cosmic atomic.

Rocketleague is the game. Other games all seem to work fine. When I was on kde it worked fine. Gnome works fine too so for sure a cosmic issue.

I check my work spaces. Nothing. I check alt tab, not there. I turn tiling on and off, nothing. The title screen music teases me.

I was going to try gamescooe but the game doesn't load at all when I evoke it. Maybe something to do with using flatpak for steam and gamescope?

Any ideas what's up?

reddit.com
u/throwawaycanadian2 — 10 days ago
▲ 35 r/COSMICDE

I built experimental HDR support for COSMIC desktop — one-shot installer if you want to try

Little update - I now have hardware HDR working , and I nearly have full per surface / element her working ( meaning video and games can render proper hdr... )

I also fixed an issue around screen off with her leading to issues...

I figure gaming in hdr should be on the menu soon.

I daily-drive COSMIC on a Dell XPS 16 (Tandem OLED) a so I built an experimental fork. Sharing in case it helps anyone else.

This does not overwrite your existing cosmic, for safety it installs a separate instance which you select at the login screen, i have provided a single click installer & uninstaller.

What it does: engages the panel's HDR signaling (10-bit, BT.2020, PQ), runs an SDR→HDR shader on every frame, gives you a small GUI to live-tune reference white / saturation / contrast.

Tested only on: Dell XPS 16 (DA16260) Tandem OLED + Intel xe driver. AMD / NVIDIA / non-OLED is unverified — could work, could break. Please report back.

Install:

git clone https://github.com/jibsta210/cosmic-hdr-tuner.git
cd cosmic-hdr-tuner
./install.sh

The installer pulls down a cosmic-comp fork + a smithay fork, builds them (~3-5 min first time), installs to /usr/local/bin, and adds a new login session called "COSMIC (HDR experiment)". Your regular COSMIC install stays untouched.

To log into the HDR session:

  1. Log out of COSMIC.
  2. At the login screen, click the ⚙️ gear icon next to your password field.
  3. Pick "COSMIC (HDR experiment)".
  4. Log in.

To tune: open the launcher, run "COSMIC HDR Tuner", toggle HDR on, hit Save. Sensible starting values for an OLED panel: ref white 300-500, gamut strength 0%, saturation 130%, midtone gamma 140%, colorspace BT.2020.

Honest caveat: HDR-aware client apps (mpv vo=gpu-next, HDR videos, HDR games) don't fully work yet — that needs the upstream Wayland color-management protocol which is still in flight. Today the desktop itself is in real HDR mode and looks calibrated/correct, but it doesn't deliver "movie HDR" peak brightness for content that knows it's HDR. Mixed-mode HDR is the next milestone.

To go back to normal: log out, pick "COSMIC" at the greeter. Two sessions coexist cleanly.

Uninstall:

cd ~/.local/share/cosmic-hdr-tuner/src/cosmic-hdr-tuner
./uninstall.sh

Repos:

u/185EDRIVER — 13 days ago
▲ 3 r/COSMICDE

Will a Theme's store be easily possible on CosmicDE?

I know you all know r/unixporn. Wouldn't it be wonderful if there was a store where one could choose between hundreds of styles of GUI? Not only to switch colors, accents and icons, but also where things are displayed and how. That way you could imitate idk Gnome's minimalism, macos whatever they have, windows chaos, plasma's ultra chaos, and so on.

With CosmicDE ditching all that legacy baggage and going full Rust with a declarative UI library like Iced, I wonder if we’re sitting on a massive opportunity to reach a perfect environment for easy casual ricing out of the box. Is this possible on a forseeable future or is it highly complicated to ensure everything works with one click on every machine and across updates despite its declarative core?

reddit.com
u/pep1n1llo — 12 days ago