Boot and startup

Boot and login optimization log for pyrite.

Outcome: - Baseline boot time improved from about 2m28s to about 40s to graphical target.

Startup strategy

1. Use socket activation for Docker:
2. Disable eager daemon start:
3. sudo systemctl disable docker containerd
4. Enable docker socket:

5. sudo systemctl enable docker.socket

6. Disable non-essential boot services:

7. containerd
8. lvm2-monitor
9. gnome-remote-desktop
10. apport

Command: - sudo systemctl disable containerd lvm2-monitor gnome-remote-desktop apport

1. Reduce snap loop mounts:
2. Migrated Firefox, Thunderbird, and Steam from snap to apt.

3. Kept only required snaps for livepatch.

4. Fix NFS boot blocking:

5. Updated ark.service and big_itch.service to use network-online.target.

6. Added TimeoutStartSec to avoid long hangs when NAS is unavailable.

7. Remove legacy tunnel services from boot path:

8. wg-quick@wg0 disabled and archived.
9. dev-tunnel.service disabled.

10. logkeep-tunnel.service disabled.

11. Warm reboot reliability:

12. Kernel params in /etc/default/grub:
13. reboot=efi nvidia.NVreg_PreserveVideoMemoryAllocations=0

Remaining optional optimization

• nvidia-cdi-refresh.service can be disabled if GPU passthrough in containers is not needed.
• sudo systemctl disable nvidia-cdi-refresh.service

Verification checklist

Boot critical chain: - systemd-analyze critical-chain

Boot blame: - systemd-analyze blame

Service status checks: - systemctl status docker.socket - systemctl status ark.service big_itch.service - systemctl status tailscaled

Revert references

• Re-enable docker and containerd eager startup:
• sudo systemctl enable docker containerd
• sudo systemctl disable docker.socket