AV Laptop Infra — Ubuntu 24.04 Performance + Customization

One‑shot checklist and files to reproduce my Lenovo ThinkBook 14 G6 IRL setup on Ubuntu 24.04 + XanMod kernel. Keeps the laptop aggressively fast on AC and sane on battery, with Wayland/Chrome tuning and GNOME theming.

Hardware (reference)

CPU: Intel Core i7‑13700H (14 cores, up to 5.0 GHz, 24 MB cache)
RAM: 32 GB DDR5‑5200 (2×16 GB, dual channel)
Storage: 1 TB NVMe M.2 Gen4 (≈5 GB/s read)
GPU: Intel Iris Xe (integrated)
Display: 14″ 1920×1200 (16:10), 300 nits, matte
Wi‑Fi / BT: Intel AX211 Wi‑Fi 6E + BT 5.1+
I/O: RJ‑45 GbE, 1×USB‑C (PD + video), 1×HDMI, 2×USB‑A, full‑size SD
Input: ABNT2 backlit keyboard, FHD webcam + dual mics
Security: Fingerprint + TPM 2.0
Battery: 60 Wh (fast charge), Weight: ~1.4 kg

Neofetch: system snapshot

arthur@av-laptop
-----------------
OS:         Ubuntu 24.04.3 LTS x86_64
Host:       21NQ ThinkBook 14 G6 IRL
Kernel:     6.16.4-x64v3-xanmod2
Uptime:     3 hours, 52 mins
Packages:   2010 (dpkg), 18 (brew), 14 (flatpak), 26 (snap)
Shell:      zsh 5.9
Resolution: 3440x1440
DE:         GNOME 46.0
WM:         Mutter
WM Theme:   Nordic-darker-v40
Theme:      Nordic-darker-v40 [GTK2/3]
Icons:      Papirus [GTK2/3]
Terminal:   qterm
CPU:        13th Gen Intel i7-13700H (20) @ 4.800GHz
GPU:        Intel Raptor Lake-P [Iris Xe Graphics]
Memory:     17780MiB / 31611MiB

What this repo gives you

CPU/Power toggles (ac-perf-toggle) that flip dozens of low‑level knobs on AC vs battery:
- powerprofilesctl + platform profile, Intel HWP Dynamic Boost, EPB=0 on AC / 8 on battery, governors, THP, swappiness/dirty ratios, NVMe read‑ahead, Wi‑Fi power‑save.
Auto‑apply at boot + hot‑plug (systemd units and udev rule).
ZRAM via systemd zram‑generator (zstd, 75% RAM, high priority).
NVMe scheduler tuning and read‑ahead.
Filesystem: noatime,lazytime + weekly fstrim.timer.
Intel GPU: i915.enable_guc=3 for GuC/HuC/RC/SLPC.
Chrome on Wayland defaults and safe flags.
Monitoring: perf-audit.sh, MangoHud, btop, s-tui, GPU/IO tools.
A couple user services (e.g. fix-pcm-volume.service).

Quick start

Fresh Ubuntu 24.04 install, GNOME (Wayland), XanMod kernel.

# 1) Base packages
sudo apt update
sudo apt install -y msr-tools zram-tools systemd-zram-generator   irqbalance powertop powerstat lm-sensors nvme-cli iotop sysstat fio   tmux btop s-tui intel-gpu-tools glmark2-x11 mangohud iw   gnome-shell-extensions chrome-gnome-shell

# 2) Copy files from this repo
# (adjust $REPO if needed)
REPO="$HOME/av-laptop-infra"

# scripts / binaries
sudo install -Dm755 "$REPO/bin/ac-perf-toggle" /usr/local/sbin/ac-perf-toggle
sudo install -Dm755 "$REPO/bin/ac-perf-boot-wrapper" /usr/local/sbin/ac-perf-boot-wrapper

# udev: AC plug/unplug -> toggle
sudo install -Dm644 "$REPO/udev/99-ac-perf-toggle.rules" /etc/udev/rules.d/99-ac-perf-toggle.rules
sudo udevadm control --reload && sudo udevadm trigger -s power_supply

# systemd (boot-time AC/Battery branch)
sudo install -Dm644 "$REPO/systemd/ac-perf-on-ac.service" /etc/systemd/system/ac-perf-on-ac.service
sudo install -Dm644 "$REPO/systemd/ac-perf-on-battery.service" /etc/systemd/system/ac-perf-on-battery.service
sudo systemctl daemon-reload
sudo systemctl enable --now ac-perf-on-ac.service ac-perf-on-battery.service

# user service example
install -Dm644 "$REPO/services/fix-pcm-volume.service" "$HOME/.config/systemd/user/fix-pcm-volume.service"
systemctl --user daemon-reload
systemctl --user enable --now fix-pcm-volume.service

# 3) ZRAM (zstd, 75% RAM, priority 100)
sudo install -Dm644 "$REPO/etc/systemd/zram-generator.conf" /etc/systemd/zram-generator.conf
sudo systemctl daemon-reload
sudo systemctl enable --now dev-zram0.swap

# 4) Filesystem + trim
sudo cp /etc/fstab /etc/fstab.bak.$(date +%F)
# Ensure / and /boot use: noatime,lazytime
# Enable weekly discard:
sudo systemctl enable --now fstrim.timer

# 5) NVMe scheduler
sudo install -Dm644 "$REPO/udev/60-nvme-scheduler.rules" /etc/udev/rules.d/60-nvme-scheduler.rules
sudo udevadm control --reload && sudo udevadm trigger -s block

# 6) GPU: make sure kernel param is present
# Add 'i915.enable_guc=3' to GRUB/loader once, then reboot.

Run the post‑install audit:

$REPO/scripts/perf-audit.sh

You should see all checkmarks ✅ when on AC. On battery, the audit will show the expected battery values (lower perf).

Where files go (concise)

System services

/etc/systemd/system/ → custom units (ours)
/usr/lib/systemd/system/ or /lib/systemd/system/ → distro units

User services

~/.config/systemd/user/

Ours

Repo path	Target	Notes
`bin/ac-perf-toggle`	`/usr/local/sbin/ac-perf-toggle`	The main AC/BAT switcher. Run `sudo /usr/local/sbin/ac-perf-toggle 1
`bin/ac-perf-boot-wrapper`	`/usr/local/sbin/ac-perf-boot-wrapper`	Helper to detect AC state if needed.
`udev/99-ac-perf-toggle.rules`	`/etc/udev/rules.d/99-ac-perf-toggle.rules`	Auto‑switch on plug/unplug.
`systemd/ac-perf-on-ac.service`	`/etc/systemd/system/ac-perf-on-ac.service`	Applies AC/perf profile at boot if on AC.
`systemd/ac-perf-on-battery.service`	`/etc/systemd/system/ac-perf-on-battery.service`	Applies battery/balanced profile at boot if on battery.
`etc/systemd/zram-generator.conf`	`/etc/systemd/zram-generator.conf`	zram, zstd, 75% RAM, priority 100.
`services/fix-pcm-volume.service`	`~/.config/systemd/user/`	User unit; manage with `systemctl --user ...`.
`scripts/perf-audit.sh`	(run in place)	Verifies everything with ✅/❌.

Details

CPU / Power profiles

ac-perf-toggle flips (AC → Battery):

powerprofilesctl set performance → balanced and sets /sys/firmware/acpi/platform_profile to performance → balanced/low-power if available.
Intel HWP Dynamic Boost: 1 → 0 at /sys/devices/system/cpu/intel_pstate/hwp_dynamic_boost.
EPB (MSR 0x1B0): 0 (max perf) → 8 (balanced power): wrmsr -a 0x1b0 0|8.
Governors: performance → powersave for all policies.
THP: always → madvise.
VM: swappiness=1, dirty_ratio=20, dirty_background_ratio=5 → 10/3 on battery.
NVMe: read_ahead_kb=2048.
Wi‑Fi power‑save: off → on.

Run manually:

sudo /usr/local/sbin/ac-perf-toggle 1   # AC / max perf
sudo /usr/local/sbin/ac-perf-toggle 0   # Battery / balanced

Boot and hot‑plug

Boot (choose based on AC presence):

# /etc/systemd/system/ac-perf-on-ac.service
[Unit]
Description=Apply aggressive profile on AC (at boot)
ConditionACPower=true
After=power-profiles-daemon.service
Wants=power-profiles-daemon.service
[Service]
Type=oneshot
ExecStart=/usr/local/sbin/ac-perf-toggle 1
[Install]
WantedBy=multi-user.target

# /etc/systemd/system/ac-perf-on-battery.service
[Unit]
Description=Apply balanced profile on battery (at boot)
ConditionACPower=false
After=power-profiles-daemon.service
Wants=power-profiles-daemon.service
[Service]
Type=oneshot
ExecStart=/usr/local/sbin/ac-perf-toggle 0
[Install]
WantedBy=multi-user.target

Hot‑plug (udev):

# /etc/udev/rules.d/99-ac-perf-toggle.rules
SUBSYSTEM=="power_supply", KERNEL=="ADP1", ATTR{{online}}=="1", RUN+="/usr/local/sbin/ac-perf-toggle 1"
SUBSYSTEM=="power_supply", KERNEL=="ADP1", ATTR{{online}}=="0", RUN+="/usr/local/sbin/ac-perf-toggle 0"

# USB‑C power sources (UCSI)
SUBSYSTEM=="power_supply", KERNEL=="ucsi-source-psy-*", ATTR{{online}}=="1", RUN+="/usr/local/sbin/ac-perf-toggle 1"
SUBSYSTEM=="power_supply", KERNEL=="ucsi-source-psy-*", ATTR{{online}}=="0", RUN+="/usr/local/sbin/ac-perf-toggle 0"

ZRAM

# /etc/systemd/zram-generator.conf
[zram0]
zram-size = ram * 0.75
compression-algorithm = zstd
swap-priority = 100

Enable:

sudo systemctl enable --now dev-zram0.swap

Filesystem & NVMe

/ and /boot mount options: noatime,lazytime (edit /etc/fstab then sudo mount -o remount ...).
Enable weekly discard: sudo systemctl enable --now fstrim.timer.
NVMe scheduler rule:

# /etc/udev/rules.d/60-nvme-scheduler.rules
ACTION=="add|change", KERNEL=="nvme[0-9]n[0-9]", ATTR{{queue/scheduler}}="none"

(double braces above only to render in Markdown; in the real file it is ATTR{queue/scheduler})

Intel GPU

Kernel cmdline contains: i915.enable_guc=3.
Verify after boot:

journalctl -k -b | grep -iE 'DMC firmware|GUC: submission enabled|HuC firmware'

Chrome (Wayland) defaults

We keep a clean desktop entry and add safe flags:

--ozone-platform=wayland --use-gl=egl --enable-features=UseOzonePlatform --enable-zero-copy

Edit your local copy if needed:

cp /usr/share/applications/google-chrome.desktop ~/.local/share/applications/
sed -i 's#^Exec=.*google-chrome-stable.*#Exec=/usr/bin/google-chrome-stable --ozone-platform=wayland --use-gl=egl --enable-features=UseOzonePlatform --enable-zero-copy %U#' ~/.local/share/applications/google-chrome.desktop
update-desktop-database ~/.local/share/applications

Monitoring

Run the audit: scripts/perf-audit.sh → shows ✅/❌.
Nice live HUD: MANGOHUD=1 glmark2 or MANGOHUD=1 vkcube.
Term dashboards: btop, s-tui, intel_gpu_top, iotop, iostat -xz 1.
One‑shot tmux monitor (example is in your shell history).

GNOME customizations (high‑level)

Extensions I keep: Top Bar Organizer, Just Perfection, Blur My Shell, Vitals, AppIndicator, GSConnect, Tiling Assistant, Clipboard History.
Theming: Adwaita‑ish (via Gradience) + matching GTK/Icons/Cursor. Login screen theming is optional and outside scope here.

Manage services

System units

sudo systemctl status ac-perf-on-ac.service
sudo systemctl status ac-perf-on-battery.service

User units

systemctl --user status fix-pcm-volume.service
systemctl --user start|stop|restart fix-pcm-volume.service

Troubleshooting / Revert

Force a profile now:

sudo /usr/local/sbin/ac-perf-toggle 1   # AC / max perf
sudo /usr/local/sbin/ac-perf-toggle 0   # Battery / balanced

If EPB writes fail: sudo modprobe msr then try again.
If udev doesn’t trigger: run sudo udevadm monitor --udev --subsystem-match=power_supply and plug/unplug.
Revert mounts: restore /etc/fstab.bak.* and mount -o remount / /boot.
Disable boot units: sudo systemctl disable --now ac-perf-on-ac.service ac-perf-on-battery.service.
Remove udev rules in /etc/udev/rules.d/ and reload.

Appendix: original systemd note

Systemd services are typically located in these directories:

System-wide services
• /etc/systemd/system/ – custom services and overrides
• /usr/lib/systemd/system/ – distribution-provided services
• /lib/systemd/system/ – system services (on some distributions)

User services
• ~/.config/systemd/user/ – user-specific services

Your fix-pcm-volume.service is a user service, managed with:

systemctl --user status fix-pcm-volume.service
systemctl --user start/stop/restart fix-pcm-volume.service

— Last updated: 2025-08-28

Name		Name	Last commit message	Last commit date
Latest commit History 3 Commits
bin		bin
docker		docker
scripts		scripts
services		services
README.md		README.md

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Repository files navigation

AV Laptop Infra — Ubuntu 24.04 Performance + Customization

Hardware (reference)

Neofetch: system snapshot

What this repo gives you

Quick start

Where files go (concise)

Details

CPU / Power profiles

Boot and hot‑plug

ZRAM

Filesystem & NVMe

Intel GPU

Chrome (Wayland) defaults

Monitoring

GNOME customizations (high‑level)

Manage services

Troubleshooting / Revert

Appendix: original systemd note

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AV Laptop Infra — Ubuntu 24.04 Performance + Customization

Hardware (reference)

Neofetch: system snapshot

What this repo gives you

Quick start

Where files go (concise)

Details

CPU / Power profiles

Boot and hot‑plug

ZRAM

Filesystem & NVMe

Intel GPU

Chrome (Wayland) defaults

Monitoring

GNOME customizations (high‑level)

Manage services

Troubleshooting / Revert

Appendix: original systemd note

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