Mike Swanson
cef97725b8
Lenovo Legion Pro 7 with Core Ultra 9 275HX, RTX 5070 Ti, CachyOS. Documents known GPU firmware bug and custom kernel. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2.5 KiB
Machine: acg-guru-5070
Hostname: acg-guru-5070 Last Updated: 2026-03-21
Hardware Specs
| Spec | Value |
|---|---|
| Model | Lenovo Legion Pro 7 16IAX10H (DMI: 83F5) |
| CPU | Intel Core Ultra 9 275HX (24 cores, up to 5.4 GHz) |
| Memory | 32 GB DDR5 |
| GPU | NVIDIA GeForce RTX 5070 Ti Laptop GPU (12 GB VRAM) |
| Storage 1 | 954 GB NVMe (SK Hynix) - CachyOS root, btrfs |
| Storage 2 | 954 GB NVMe (SK Hynix) - /home, ext4 |
Software
| Spec | Value |
|---|---|
| OS | CachyOS Linux (Arch-based) |
| Kernel | 6.19.9-1-cachyos |
| DE | KDE Plasma 6.6.3 (Wayland) |
| NVIDIA Driver | 595.45.04 (open kernel module) |
| CUDA | 13.2 |
| Python | 3.14 |
Claude Code Environment
- Working Directory: /home/guru/ClaudeTools
- User: guru
- Shell: fish
- Git: Configured for Gitea (git.azcomputerguru.com)
Network
| Interface | Address |
|---|---|
| WiFi (wlan0) | 10.3.36.218 |
| Tailscale | 100.95.216.79 |
Capabilities
- Git operations
- SSH access to infrastructure
- GrepAI semantic search (watcher running)
- Ollama local AI (qwen3:14b, codestral:22b, nomic-embed-text)
- MCP servers available
- NVIDIA GPU (CUDA compute)
- Claude Code CLI
Known Issues
GPU Firmware Bug (RTX 5070 Ti)
The RTX 5070 Ti enters an error state (NVRM rpcSendMessage 0x00000062) after ~3-5 minutes of sustained GPU compute. This is a known Blackwell/RTX 50-series GSP firmware bug on Linux (NVIDIA bug #5953411). Affects all tested drivers (580.x, 590.x, 595.x).
Impact: GPU-accelerated ML workloads (Whisper transcription, etc.) cannot complete. GPU enters full ERR! state requiring hard power-off (warm reboot hangs with spinning symbol).
Workarounds tried (none effective):
- Disable Runtime D3 power management
- Enable persistence mode
- Lock GPU clocks
- Power cap reduction
Status: Waiting for NVIDIA driver fix. Heavy GPU compute delegated to Mac (M4).
Custom Kernel for Audio
Running a custom-patched CachyOS kernel with the nadimkobeissi/16iax10h-linux-sound-saga patch for Awinic AW88399 smart amplifier support. Stock kernel has terrible speaker output. Patch is not upstreamed.
Notes
- Primary development workstation
- GPU works fine for display, light compute, Ollama inference — only fails under sustained heavy compute (Whisper, training)
- Sudo: NOPASSWD configured for guru user
- Old btrfs @home subvolume on nvme0n1 (from initial install before /home was moved to nvme1n1)