Thermal Management Guide

sudo systemctl status t2fanrd

sudo systemctl start t2fanrd
sudo systemctl stop t2fanrd
sudo systemctl restart t2fanrd
sudo systemctl enable t2fanrd    # start on boot
sudo systemctl disable t2fanrd   # disable on boot

journalctl -u t2fanrd -f

sudo nano /etc/t2fand.conf

[Fan1]
low_temp=40
high_temp=80
speed_curve=linear
always_full_speed=false

[Fan2]
low_temp=40
high_temp=80
speed_curve=linear
always_full_speed=false

sudo apt install lm-sensors
sensors

sensors -u

# Terminal dashboard (CPU temp, frequency, power)
sudo apt install s-tui
s-tui

# System monitor
sudo apt install btop
btop

sudo apt install tlp tlp-rdw
sudo tlp-stat -t

watch -n 2 'sudo tlp-stat -t'

sudo apt install tlp tlp-rdw
sudo systemctl enable tlp
sudo tlp start
tlp-stat -s    # check status

sudo apt install --reinstall tlp

sudo cp profile-performance.conf /etc/tlp.d/
sudo cp profile-balanced.conf /etc/tlp.d/
sudo cp profile-powersaver.conf /etc/tlp.d/

# Disable all
sudo rename 's/\.conf$/.conf.off/' /etc/tlp.d/profile-*.conf

# Enable balanced (default)
sudo mv /etc/tlp.d/profile-balanced.conf.off /etc/tlp.d/profile-balanced.conf

# Apply
sudo tlp start

# Use for: heavy workloads, compiling, video rendering
CPU_MIN_PERF_ON_AC=0
CPU_MAX_PERF_ON_AC=100
CPU_MIN_PERF_ON_BAT=0
CPU_MAX_PERF_ON_BAT=70
CPU_BOOST_ON_AC=1
CPU_BOOST_ON_BAT=0
CPU_ENERGY_PERF_POLICY_ON_AC=performance
CPU_ENERGY_PERF_POLICY_ON_BAT=balance_performance

# Use for: daily use, browsing, coding, office work
CPU_MIN_PERF_ON_AC=0
CPU_MAX_PERF_ON_AC=70
CPU_MIN_PERF_ON_BAT=0
CPU_MAX_PERF_ON_BAT=50
CPU_BOOST_ON_AC=0
CPU_BOOST_ON_BAT=0
CPU_ENERGY_PERF_POLICY_ON_AC=balance_performance
CPU_ENERGY_PERF_POLICY_ON_BAT=balance_power

# Use for: max battery life, light tasks, reading
CPU_MIN_PERF_ON_AC=0
CPU_MAX_PERF_ON_AC=50
CPU_MIN_PERF_ON_BAT=0
CPU_MAX_PERF_ON_BAT=30
CPU_BOOST_ON_AC=0
CPU_BOOST_ON_BAT=0
CPU_ENERGY_PERF_POLICY_ON_AC=balance_power
CPU_ENERGY_PERF_POLICY_ON_BAT=power

#!/bin/bash
# tlp-profile - Quick switch between TLP power profiles
# Profiles stored in /etc/tlp.d/ as profile-<name>.conf
# Only one profile can be active at a time (.conf = active, .conf.off = inactive)

PROFILE_DIR="/etc/tlp.d"

if [ -z "$1" ]; then
    echo "Usage: tlp-profile <performance|balanced|powersaver>"
    echo ""
    echo "Active profile:"
    active=$(ls "$PROFILE_DIR"/profile-*.conf 2>/dev/null)
    if [ -n "$active" ]; then
        for f in $active; do
            basename "$f" | sed 's/profile-//;s/\.conf//'
        done
    else
        echo "  none"
    fi
    echo ""
    echo "Available profiles:"
    for f in "$PROFILE_DIR"/profile-*.conf "$PROFILE_DIR"/profile-*.conf.off; do
        [ -f "$f" ] && basename "$f" | sed 's/profile-//;s/\.conf\.off//;s/\.conf//'
    done | sort -u
    exit 0
fi

# Disable all profiles
for f in "$PROFILE_DIR"/profile-*.conf; do
    [ -f "$f" ] && mv "$f" "${f}.off"
done

# Enable selected profile
TARGET="$PROFILE_DIR/profile-${1}.conf.off"
if [ -f "$TARGET" ]; then
    mv "$TARGET" "${TARGET%.off}"
    tlp start
    echo "Switched to: $1"
    echo ""
    echo "Verify:"
    echo "  CPU cap: $(cat /sys/devices/system/cpu/intel_pstate/max_perf_pct)%"
    echo "  Turbo off: $(cat /sys/devices/system/cpu/intel_pstate/no_turbo)"
else
    echo "Profile not found: $1"
    echo "Available: performance, balanced, powersaver"
    exit 1
fi

sudo cp g /usr/local/bin/
sudo chmod +x /usr/local/bin/tlp-profile

# Switch profiles
sudo tlp-profile balanced
sudo tlp-profile performance
sudo tlp-profile powersaver

# Check active profile
tlp-profile

# Disable all
sudo rename 's/\.conf$/.conf.off/' /etc/tlp.d/profile-*.conf

# Enable desired profile (e.g. performance)
sudo mv /etc/tlp.d/profile-performance.conf.off /etc/tlp.d/profile-performance.conf

# Apply[
sudo tlp start

# Check CPU cap percentage
cat /sys/devices/system/cpu/intel_pstate/max_perf_pct

# Check turbo boost is off (1 = disabled)
cat /sys/devices/system/cpu/intel_pstate/no_turbo

# Check current frequencies
grep "MHz" /proc/cpuinfo

# Full TLP power report
tlp-stat -p

# Temporarily set to 100%
echo 100 | sudo tee /sys/devices/system/cpu/intel_pstate/max_perf_pct

# Set back to 70%
echo 70 | sudo tee /sys/devices/system/cpu/intel_pstate/max_perf_pct

sudo apt install cpufrequtils

# Full CPU frequency info
cpufreq-info

# Current governor and policy
cpufreq-info -p

# Set governor to performance (all cores)
for i in $(seq 0 15); do sudo cpufreq-set -c $i -g performance; done

# Set governor back to powersave
for i in $(seq 0 15); do sudo cpufreq-set -c $i -g powersave; done

# Package-level throttle count
cat /sys/devices/system/cpu/cpu0/thermal_throttle/package_throttle_count

# Per-core throttle counts
for i in /sys/devices/system/cpu/cpu*/thermal_throttle/core_throttle_count; do echo "$i: $(cat $i)"; done

# Current frequency vs max — if well below max, something is limiting it
grep "MHz" /proc/cpuinfo

# CPU hardware limits
lscpu | grep "MHz"

# Kernel throttle messages
dmesg | grep -i throttl

# Best visual tool — shows freq, temp, power in real-time
s-tui

echo "Throttle count: $(cat /sys/devices/system/cpu/cpu0/thermal_throttle/package_throttle_count)" && echo "CPU MHz:" && grep "MHz" /proc/cpuinfo | head -4

sudo apt install thermald
sudo systemctl enable thermald
sudo systemctl start thermald

sudo systemctl status thermald
journalctl -u thermald --no-pager | tail -30

cat /sys/class/thermal/thermal_zone*/type
cat /sys/class/thermal/thermal_zone*/temp

sudo apt install gnome-shell-extension-manager

sudo apt install gnome-tweaks

# Interactive — press keys to see what they map to
xev -event keyboard

# Show current modifier map
xmodmap -pm

sudo apt install xclip

# Copy command output to clipboard
echo "hello" | xclip -selec[tion clipboard

# Copy file contents to clipboard
cat somefile.txt | xclip -selection clipboard

# Paste from clipboard
xclip -selection clipboard -o

# Fan service
sudo systemctl status t2fanrd
sudo systemctl restart t2fanrd
journalctl -u t2fanrd -f

# Edit fan curve
sudo nano /etc/t2fand.conf

# Switch TLP profiles
sudo tlp-profile balanced
sudo tlp-profile performance
sudo tlp-profile powersaver
tlp-profile                     # show active profile

# Apply TLP changes
sudo tlp start

# Check CPU cap & turbo
cat /sys/devices/system/cpu/intel_pstate/max_perf_pct
cat /sys/devices/system/cpu/intel_pstate/no_turbo

# Temporary CPU cap override
echo 70 | sudo tee /sys/devices/system/cpu/intel_pstate/max_perf_pct

# Check current frequencies
grep "MHz" /proc/cpuinfo

# Check throttle events
cat /sys/devices/system/cpu/cpu0/thermal_throttle/package_throttle_count

# Check temps
sensors
sensors | grep -E "Package|Core"
sudo tlp-stat -t
watch -n 2 'sudo tlp-stat -t'

# Detailed sensor dump
sensors -u

# Full TLP power report
tlp-stat -p

# Check what's using CPU
top -o %CPU -n 1 | head -20

# CPU frequency info
cpufreq-info
cpufreq-info -p

# Check GNOME desktop
echo $XDG_CURRENT_DESKTOP

# Swap Cmd/Ctrl
gsettings set org.gnome.desktop.input-sources xkb-options "['ctrl:swap_lwin_lctl']"

# Copy to clipboard
echo "text" | xclip -selection clipboard

# Clean unused packages
sudo apt autoremove