Codex in ChatGPT desktop app for Linux is now in preview

2026-08-13 | original

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Why This Matters

The integration of Codex in the ChatGPT desktop app for Linux marks a significant step toward native Wayland support, improving usability for users with Japanese input methods. This development highlights ongoing efforts to enhance compatibility and performance of Electron-based applications on Linux, benefiting both developers and end-users. Ensuring seamless IME functionality is crucial for broadening accessibility and productivity in diverse language environments.

Key Takeaways

Enabling Wayland IME support with specific flags fixes Japanese input issues in ChatGPT on Linux.
ChatGPT/Codex can operate natively on Wayland without requiring XWayland fallback, unlike some other Electron apps.
Proper configuration of desktop files and environment settings is essential for optimal application performance on Linux desktops.

I installed the new Linux ChatGPT/Codex desktop app from the official x64 RPM and encountered a Japanese IME issue on Fedora KDE.

Environment

Fedora 44 x86_64

KDE Plasma / Wayland

Fcitx 5

Japanese input method

Official ChatGPT/Codex Linux RPM

Issue

When ChatGPT is launched normally from the KDE application menu, I cannot switch to Japanese input inside the message composer.

Japanese input works normally in native KDE applications such as KWrite.

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