MiniMax H3 Black Screen Issue on AMD GPUs

Developers encountered a black screen issue (with only audio) when running the MiniMax H3 model locally on AMD RX 7900 XTX GPUs using ComfyUI. Investigations revealed that the problem is caused by VAE decoding compatibility defects on AMD hardware.

2026-08-09 ~ 2026-08-09 · 2 related posts

Full story(3 episodes)→

• Episode 1: Running MiniMax H3 on AMD GPUs Hindered by SageAttention Dependency(2026-08-05, 2 posts)
• Episode 2: Running MiniMax H3 on AMD GPUs: Tests and Optimization(2026-08-06, 2 posts)
• Episode 3: MiniMax H3 Black Screen Issue on AMD GPUs(2026-08-09, 2 posts)

• Fixing Black Video Outputs with MiniMax H3 on AMD GPUs — Present-Guitar-3967 · 2026-08-09
• Minimax H3 GGUF Renders Black Videos on AMD Radeon 7900XTX — Present-Guitar-3967 · 2026-08-09