Fix 7900 XTX Linux Crashes via amdgpu.runpm=0
Snoo_81913 · reddit · 2026-08-25
A user shared a fix for OOM crashes when running large models on Linux with an AMD 7900 XTX GPU.
- Symptoms: System hard resets due to OOM when running large models (e.g., 27B) over Thunderbolt 3, despite sufficient VRAM.
- Root Cause: The amdgpu driver's default runtime power management dumps VRAM contents (model weights) to system RAM upon auto-suspend. With weights (18GB) exceeding physical RAM (16GB), the system crashes.
- Solution: Adding amdgpu.runpm=0 to the GRUB configuration disables runtime power management, resolving the instability.
More from Infra
- Cheat sheet: VRAM requirements for different LLM context sizes — LeviTurk · 2026-08-25
- Meta's Data Center Uses Water for 800 Homes; Local Alfalfa Uses 400x More — Promptmethus · 2026-08-25
- Scaling Personal GPU Compute Amid Rising HBM Prices — Blues520 · 2026-08-25
- Smaller models could reshape deployment economics with high efficiency — eyishazyer · 2026-08-25
- Hugging Face libraries trade raw speed for broad compatibility and feature coverage — bclavie · 2026-08-25
- Chimera Boosts Multi-Vector Retrieval Throughput by 16x via GPU-CPU Co-Processing — _reachsumit · 2026-08-25