COSMIC Epoch 1.2 Fixes Flickering Issues with Intel Graphics

System76 has released the latest version of its Rust-based desktop environment, “COSMIC Epoch,” version 1.2, on June 30, 2026. This update comes just a week after the release of version 1.1. The primary focus of this version is resolving flickering issues on Intel integrated graphics.

Causes and Solutions for Flickering Issues

The core fix in COSMIC Epoch 1.2 lies in improvements to its proprietary compositor. Flickering on systems equipped with Intel GPUs from the Meteor Lake generation onward had been reported under specific conditions. This issue was also observed on Arrow Lake and Lunar Lake chipsets.

While a temporary workaround had previously been implemented on the COSMIC-Workspaces side, this update has integrated a robust fix directly into the compositor itself. Specifically, it prevents the DMA copy process from being attempted with newer Intel GPUs when transferring buffers between Intel integrated GPUs and discrete GPUs from AMD or NVIDIA. This fix is particularly effective in hybrid environments, such as laptops combining Intel iGPUs with external GPUs.

Additionally, the flickering that occurred when opening the workspace overview has been addressed. This issue was attributed to subtle differences in memory management within recent Intel GPU architectures.

AVIF Support and Other Improvements

COSMIC Background now includes support for the AVIF image format, an efficient format based on the AV1 video codec. AVIF achieves a high compression rate and superior image quality compared to JPEG. Users can now utilize AVIF images as desktop backgrounds.

Moreover, flickering issues when opening the COSMIC Launcher have also been resolved. Other updates include improvements to various applets and numerous general bug fixes.

COSMIC Epoch is a next-generation desktop environment under development by System76. Unlike existing environments like GNOME or KDE, it is entirely newly developed in the Rust programming language. It emphasizes performance, stability, and a modern design philosophy. The previous version, Epoch 1.1, introduced a new system monitor called “COSMIC-Monitor.” This latest update shifts its focus more toward enhancing stability rather than introducing new features.

The update is available for download, and more detailed information can be found on the project’s GitHub page.

Editorial Opinion

The release of COSMIC Epoch 1.2 is commendable for prioritizing stability over new feature additions. Display glitches in desktop environments are a significant issue that directly impacts user experience. Intel’s latest GPU architectures have posed various challenges for Linux desktops in the past, and this update demonstrates System76’s commitment to addressing not just the needs of its hardware users but also those of the broader Intel graphics user base.

In the long term, the stabilization of COSMIC Epoch is vital for solidifying its position as a viable alternative to GNOME and KDE. Its development in Rust offers potential advantages in memory safety and performance. However, the ecosystem is still relatively small, and it will likely take several more major updates before it achieves the level of maturity needed for widespread practical use.

Moving forward, we believe attention should be paid to compatibility with Intel’s next-generation GPUs (Xe3/Celestial) and further optimization for hybrid configurations similar to NVIDIA Optimus.

References

• COSMIC Epoch 1.2 Desktop Fixes Flickering Issues For Intel Graphics — Phoronix, 2026-06-30
• COSMIC Epoch 1.1 Introduces New System Monitor “COSMIC-Monitor” — June 23, 2026
• COSMIC Desktop Project — GitHub