Linux Server Optimization#

What Was Established#

Optimizations for headless Ubuntu servers (specifically HP Pavilion and Thinkpad T480) to prevent sleep/suspend when the lid is closed.

Key Decisions#

Modify systemd-logind to ignore lid switch events to ensure the server remains active when the laptop lid is closed.

Current Configuration#

Prevent Sleep on Lid Close#

Edit /etc/systemd/logind.conf:

sudo nano /etc/systemd/logind.conf

Ensure the following lines are uncommented and set to ignore:

HandleLidSwitch=ignore
HandleLidSwitchExternalPower=ignore
HandleLidSwitchDocked=ignore

Apply the changes:

sudo systemctl restart systemd-logind

Errors Resolved#

Issue: ACPI Errors appearing in logs on HP hardware. Error: ACPI Error: No handler for Region [CMS]... Resolution: These are benign BIOS/firmware mismatches between HP’s Windows-centric firmware and the Linux kernel. They can be safely ignored for headless AI workloads.

Ollama Configuration, Pavilion (AI PC) Configuration

Sources#

Homelab AI - 2026-04-13 · ingested/chats/Homelab/Homelab AI - 2026-04-13