[Ubuntu ARM] Graphical glitches when using GPU acceleration on ASUS Vivobook S15 (Snapdragon X Elite)

[denis-or]

Description

When running Positron on Ubuntu ARM (Vivobook S15 with Snapdragon X Elite), the application opens but displays severe graphical glitches (flashing colors, corrupted UI).

If I launch Positron with --disable-gpu --disable-gpu-compositing, it works perfectly — so it seems related to GPU rendering on ARM.

Environment

• Device: ASUS Vivobook S15 (Snapdragon X Elite)
• OS: Ubuntu ARM (kernel 6.11, Mesa 24)
• GPU: Adreno 750 (working under Mesa)
• Positron version: 2025.11.0-234 - Debian-based Linux arm64 (Ubuntu 24+)
• Launch mode:
  • Works → positron --disable-gpu
  • Glitches → normal launch

Expected behavior

Normal UI rendering with hardware acceleration enabled.

Additional context

This hardware is part of the Snapdragon X Elite platform. The GPU driver (msm/adreno) is working under Mesa, and OpenGL is functional (glxgears OK).
It seems Electron’s GPU backend may not yet handle this combination properly.

[juliasilge]

Looks like this is a pretty well-reported set of problems: https://github.com/microsoft/vscode/issues?q=is%3Aissue%20state%3Aopen%20label%3Aeditor-gpu

Thanks for the report!