Uploaded July 2026 | Updated September 2026, 1 week ago

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System76 has released COSMIC 1.4, the latest stable version of its open-source, Rust-based Linux desktop environment.

The update introduces a brand-new default sound theme, improved fractional scaling accuracy, better NetworkManager support, and several upgrades across COSMIC Files, COSMIC Monitor, COSMIC Panel, COSMIC Launcher, Settings, Workspaces, and the compositor.

COSMIC Monitor now offers a force-quit option, additional CPU and GPU graph types, and GPU frequency monitoring. The release also fixes fullscreen gaming issues, menu flickering, panel crashes, incorrect window borders, audio-control problems, and several other stability bugs.

COSMIC 1.4 arrives only one week after COSMIC 1.3 introduced the Frosted Glass effect, showing how quickly System76 is improving the desktop.

Watch the full video to see everything new in COSMIC 1.4 and whether it is ready to become your daily Linux desktop.

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