Codex Desktop Linux: severe lag and high CPU/GPU usage on Hyprland with hybrid graphics

What version of the Codex App are you using (From “About Codex” dialog)?

Powered by Codex & OWL Version 26.803.81509 Released Aug 11, 2026

What subscription do you have?

Plus

What platform is your computer?

Linux 7.1.8-200.fc44.x86_64 x86_64 unknown

What issue are you seeing?

Codex Desktop is severely laggy immediately after launch and causes unusually high CPU/GPU power use on my Linux laptop.

On a fresh launch, I measured:

• Codex processes: \~134% combined CPU and \~2.5 GiB RAM
• Codex GPU process: \~40% NVIDIA GPU utilization
• NVIDIA RTX 3050 Mobile: \~28 W power draw
• Laptop temperature reached about 90°C before troubleshooting
• The UI is visibly laggy while typing and using the app

The issue persists after closing Telegram and relaunching Codex.

Attempted mitigations:

• Fully quit Codex and relaunch with DRI_PRIME=0
• Codex still used the NVIDIA GPU.
• Launch with --disable-gpu
• The app failed/crashed and printed a JavaScript stack trace.

Hardware:

• Intel Iris Xe integrated GPU
• NVIDIA GeForce RTX 3050 Mobile discrete GPU
• Hyprland session

What steps can reproduce the bug?

1. Start a Hyprland Linux session on a hybrid Intel/NVIDIA laptop.
2. Install and launch the official Codex Desktop Linux RPM.
3. Open Codex and wait about one minute.
4. Observe severe UI lag.
5. Monitor processes with top/htop and GPU activity with nvidia-smi.

Expected: Codex should remain responsive and use reasonable CPU/GPU power while idle or during normal use.

Actual: Codex uses roughly 134% CPU, \~2.5 GiB RAM, and substantial NVIDIA GPU power; the laptop becomes hot and the UI is laggy.

What is the expected behavior?

Codex should remain responsive during normal use and should not sustain high CPU/GPU utilization or heat the laptop to around 90°C when no intensive task is running.

Additional information

I installed the official RPM from [https://openai.com/codex/](<https://openai.com/codex/>)

System observed:

• NVIDIA GPU temperature: \~61–62°C during testing
• CPU package temperature varied up to \~83°C during testing
• Hyprland also used the NVIDIA GPU, but Codex was independently using substantial CPU and GPU resources.

Potentially related reports, but not exact duplicates:

• openai/codex#37638: similar \~40% NVIDIA GPU use attributed to the Codex Desktop UI on a hybrid-GPU laptop, but on Windows.
• openai/codex#13749: Codex visible-window/compositor GPU issue on Windows, but different display stack and symptoms.
• [#10885](<https://github.com/openai/codex/issues/10885>) / openai/codex#10432: Codex Desktop CPU/GPU power and heat reports on macOS.

This report is specifically for the official Linux RPM on Hyprland with Intel Iris Xe + NVIDIA RTX 3050 Mobile. It includes severe UI lag, sustained CPU/GPU usage, and high laptop temperature.

I can provide sanitized logs or more measurements if needed.

User feedback: Linux app consumes high CPU/GPU while idle

• Source: [https://x.com/BadGatewayCo/status/2090838316237164983](<https://x.com/BadGatewayCo/status/2090838316237164983>)
• Source: [https://x.com/BadGatewayCo/status/2090840817120190619](<https://x.com/BadGatewayCo/status/2090840817120190619>)
• Source: [https://x.com/BadGatewayCo/status/2090844564097527974](<https://x.com/BadGatewayCo/status/2090844564097527974>)
• Type: external
• User reports:
• “Soon as it launches its just eating CPU while doing nothing.”
• “The Codex Electron UI is consuming roughly 123% CPU: its main process is ~58% and one renderer is ~65%; GPU is another ~10%.”
• “GPU utilization: 34–35%” and “Power draw: ~19 W.”
• “chatgpt --ozone-platform=wayland is a little better, but still 10-15% of gpu while totally.”