# 2026-04-13## GPU Install Attempt — CasaOS Goes Down### What happened- Topher attempted to install the Nvidia P102-100 10GB GPU (passive mining card, GTX 1080 Ti chip) into the CasaOS server (media, 100.91.1.57)- With GPU installed: system boots all the way to terminal login prompt (media login:) — so POST works- BUT: CasaOS dashboard does not load in browser- Without GPU: system presumably works normally (pulled card to reboot)### Driver state on media (pre-GPU install, checked via exec)- Driver 560.35.03 installed (nvidia-driver-560, linux-modules-nvidia-560-6.11.0-24-generic)- /dev/nvidiactl exists — kernel driver loaded- Ollama container: big-bear-ollama-cpu (CPU-only, no GPU access)- CasaOS: running, HTTP 200 on curl to localhost- Port 80: listening### Theories1. GPU changes PCI bus order or eth0 interface naming → network binding issue2. nouveau driver grabbing card → system stall or display conflict3. CasaOS binding to wrong interface after GPU install (looks for eth0, finds something else)4. driver not fully compatible with P102-100 (compute card, not a standard GPU)### PSU - ROOT CAUSE- Current PSU: cheap 430W (INSUFFICIENT)- Ordered: quality 600W PSU (arriving soon)- The 430W cheap unit likely caused Postgres protection fault and instability- P102-100 needs 150W, system pulls ~390W — no headroom on cheap 430W### Next steps (Topher to run with GPU installed)1. `ping media` — does hostname resolve?2. `ss -tlnp | grep :80` — is port 80 listening?3. `curl -I http://localhost/` — does CasaOS respond locally?4. `dmesg | grep -i nvidia | tail -20` — GPU kernel messages5. `dmesg | grep -i error | tail -10` — any errors6. Check if eth0/swac0 changed names: `ip a`### After new PSU arrives1. Remove GPU before PSU swap (safety)2. Swap PSU, verify boots clean WITHOUT GPU3. Reinstall GPU, boot — test CasaOS4. If Postgres crashes again: `sudo systemctl restart postgresql`5. Then restart Ollama container with GPU support once stable### Memory search- Currently DISABLED — Ollama CPU embeddings too slow (21s/chunk), waiting for GPU- Qdrant: running on media at 100.91.1.57:6333- Ollama: CPU container, needs GPU restart after card is confirmed working### Agents- psb-thinking (me): technical research, planning, system admin- psb-gemma: brewery operations, day-to-day- psb-business: business/reports/Toast POS## 23:26 UTC - Post-reboot check (GPU install)- Media rebooted ~22:56 UTC (~2hrs after warning at 21:42)- System up 30 min, load 0.03 — stable- **P102-100 NOT detected** — only Quadro K600 at 01:00.0- nvidia-smi: "couldn't communicate with NVIDIA driver" (Quadro K600 has no driver)- No /dev/nvidia* devices found- P102-100 may not have been physically installed, or POST failure, or PCIe lane issue