This project is not affiliated with Lenovo in any way
Lenovo Legion Linux (LLL) brings additional drivers and tools for Lenovo Legion series laptops to Linux. It is the alternative to Lenovo Vantage or Legion Zone (both Windows only).
It allows you to control features like the fan curve, power mode, power limits, rapid charging, and more. This has been achieved through reverse engineering and disassembling the ACPI firmware, as well as the firmware and memory of the embedded controller (EC).
⭐ Please star this repository if this is useful or might be useful in the future.
🌟 My goal is to merge the driver into the main Linux kernel so it comes automatically with Linux and no recompilation is required after a Linux update
💥 Starring shows that this is useful to me and the Linux community so hopefully a merge into the Kernel is possible.
- light on RAM and CPU and without telemetry
- small GUI for fan curve; other features by GUI tools of distribution
- also fully controllable by scripts or from terminal
- set a fully featured custom fan curve with up to 10 points
- even allows speed below 1600 RPM
- set temperature points when the fan speed (level) should change
- you can use CPU, GPU and IC temperature to control the fan all at the same it
- set the fan speed (RPM) at each level
- set minimum temperature for each level that must be fallen below before slowing down the fans again
- set acceleration and deceleration for each the fan when the fan speed should increase or decrease
- save and load presets for different modes
- switch power mode (quiet, balanced, performance) with software
- changing with
Fn+Qalso possible - now you can do it with software in your normal system settings
- depending on your distribution, e.g. you could automatically switch to quiet mode if you are on battery
- Allow change to different fan profile depending of the power profile (Lenovo Legion Laptop Support Daemon)
- changing with
- monitor fan speeds and temperatures (CPU, GPU, IC) with additional sensors
- lock and unlock the fan controller and fan speed
- enable or disable automatic switching to a "mini fan curve" if temperatures are low for a longer time
- switch battery conservation mode by software; keep battery at around 50% when on AC to prolong battery life
- toggle fn lock by software; use special function on F1-F12 keys without pressing Fn key
- enable or disable touchpad by software
- it comes with a driver (kernel module) that implements the Linux standard interfaces (sysfs, debugfs, hwmon)
- using standard Linux interfaces makes it is compatible with the command line/file interface or standard GUI tools like psensor
- compared to vendor tools for Windows, it even allows to set the fan curve. This allows to keep the fans slowly and quietly running instead of constantly switching between fans off and loud fans. Perfect for quiet office work. 🏢
- Debian/Ubuntu:
- Fedora/RHEL Base Distros:
- Arch Base Distros:
- Gentoo Base Distros:
- NixOS
If you have a 2022 or 2023 model, please help testing the new features here.
If you have a light in the lid (Y-logo) or at the IO-ports (all Legion 7), please help testing controlling it here.
Other Lenovo Legion models from 2020 to 2023 probably also work. The following models were confirmed. If you have a model with a BIOS version with the same leading letters, e.g. EFCN (like EFCN54WW) then it will probably work. If you want to confirm that your model works or if it does not work, please raise a issue.
- Lenovo Legion 5 15IMH05, 15IMH05H (BIOS EFCN54WW): sensors, fan curve, power profile
- Lenovo Legion 5 15ACH6H (BIOS GKCN58WW or GKCN57WW), Gen 6: sensors, fan curve, power profile
- Lenovo Legion R9000 (R9000K2021H) (BIOS GKCN59WW): sensors, fan curve, power profile
- Lenovo Legion 5 Pro 16ACH6H (82JQ) (BIOS GKCN58WW) x 2: sensors, fan curve, power profile
- Legion 5 Pro 16ACH6H (AMD 5800H + Nvidia RTX 3070): sensors, fan curve, power profile
- Lenovo Legion 5 15ARH05A (BIOS FSCN14WW), Gen 5: sensors, fan curve
- Lenovo Legion 5 15ARH05H (BIOS FSCN14WW), Gen 5: sensors, fan curve
- Lenovo Legion 5 15ITH6H (BIOS H1CN49WW, Intel): sensors, fan curve, power profile
- Lenovo Legion 5 15ARH7H (BIOS JUCN55WW), Gen7: sensors, fan curve, power profile
- Lenovo Legion 5 15ACH6 (BIOS HHCN31WW): sensors, fan curve, power profile
- Lenovo Legion S7 16ARHA7 (BIOS KFCN32WW): sensors, fan curve (no minifancurve), power profile
- Lenovo Legion 5 Pro 16ITH6 (BIOS H1CN52WW (there was an error in CPU temp with H1CN51WW)): sensors, fan curve, power profiles
- Lenovo Legion 5 15ACH6A (BIOS G9CN30WW), all AMD variant: sensors, fan curve (with mini fan curve), power profile
- Lenovo Legion 5 17ACH6 (BIOS HHCN31WW): sensors, fan curve, power profile
- Lenovo Legion 7i 16ITHG6 (BIOS H1CN35WW): sensors, fan curve, power profile
Note: Features that are not confirmed probably also work. They were just not tested.
Currently fan control is not working for the following models. Other features, probably work:
- the tool comes with no warranty. Use at your own risk.
- this project is not affiliated with Lenovo in any way.
- this is a small hobby project; please be patient and read through this readme carefully before you ask for support
- if your Lenovo Legion laptop is not supported and you are ready to perform some tests please notify me
- this is a Linux only tool and will probably not run in WSL; for Windows use one of the available Windows tools
Please do the following:
- follow installation instructions
- then make the test
- if tests are successful, install permanently
- create your fan curve
You will need to install the following to download and build it. If there is an error of any package, find the alternative name in your distribution and install them.
Ubuntu/Debian/Pop!_OS/Mint/elementary OS/Zorin
sudo apt-get update
sudo apt-get install -y make gcc linux-headers-$(uname -r) build-essential git lm-sensors wget python3-pyqt5 python3-yaml python3-venv python3-pip python3-argcomplete python3-darkdetect
# Install the following for installation with DKMS
sudo apt-get install dkms openssl mokutilRHEL/CentOS/RockyLinux/Fedora/AlmaLinux
sudo dnf install -y kernel-headers kernel-devel dmidecode lm_sensors PyQt5 python3-yaml python3-pip python3-argcomplete python3-darkdetect
sudo dnf groupinstall "Development Tools"
sudo dnf group install "C Development Tools and Libraries"
# Install the following for installation with DKMS
sudo dnf install dkms openssl mokutilAlternatively, you might use yum instead of dnf and start with sudo yum update. Installing "C Development Tools and Libraries" might not be needed depending of your distribution.
openSUSE
sudo zypper install make gcc kernel-devel kernel-default-devel git libopenssl-devel sensors dmidecode python3-qt5 python3-pip python3-PyYAML python3-argcomplete python3-darkdetect
# Install the following for installation with DKMS
sudo zypper install dkms openssl mokutilNote: Check for the correct Header package.
Arch/Manjaro/EndeavourOS
sudo pacman -S linux-headers base-devel lm_sensors git dmidecode python-pyqt5 python-yaml python-argcomplete python-darkdetect
# Install the following for installation with DKMS
sudo pacman -S dkms openssl mokutilNote: Check for the correct Header package.
Troubleshooting:
- Got error
ERROR: Kernel configuration is invalid.. Just reinstall kernel headers, e.g. in Debian:
sudo apt install --reinstall linux-headers-$(uname -r)git clone https://github.com/johnfanv2/LenovoLegionLinux.git
cd LenovoLegionLinux/kernel_module
make
sudo make reloadmoduleFor further insturctions, problems, and tests see Initial Usage Testing below. Do them first before a permanent installation.
Expected result:
makefinishes without displayingError
Unexpected result:
makeaborts with an error- an error of kind
/lib/modules/XXXXXXXX/build: No such file or directorylike the following below. This means that the linux-headers are not installed properly for the current kernel. Please check your currrent kernel withuname -rand install linux-headers for it. Then there will be a directory/lib/modules/XXXXXXXX/where XXXXXX is the current kernel version, e.g.5.19.0-28-genericor6.2.9-arch1-1. If you have just updated your packages a restart might help or see https://bbs.archlinux.org/viewtopic.php?id=135931, https://forum.manjaro.org/t/missing-build-directory-in-5-15-16-1-manjaro-headers/101793.
make[1]: *** /lib/modules/6.2.9-arch1-1/build: No such file or directory. Stop.
make[1]: Leaving directory '/home/user/LenovoLegionLinux/kernel_module'
make: *** [Makefile:13: all] Error 2
After successfully building and testing (see below), run from the folder LenovoLegionLinux/kernel_module
make
sudo make installYou must recompile and reinstall it again with above commands after each kernel update, as usual for external kernel modules. I want to get it merged into the mainline Linux kernel, so this is not needed anymore. So please star this repository :)
Go to the folder LenovoLegionLinux/kernel_module
make
sudo make uninstallDKMS is a utility that eliminates the need to manually rebuild and reinstall the driver after every kernel update. DKMS will do the reinstallation automatically.
You must first install the package to with DKMS. See Requirements section.
sudo cp ./kernel_module/* /usr/src/LenovoLegionLinux-1.0.0 -r
sudo dkms add -m LenovoLegionLinux -v 1.0.0
sudo dkms build -m LenovoLegionLinux -v 1.0.0
Or via makefile
cd kernel_module
sudo make dkms # Don't forget to run as root
If you want the driver to work with secure boot, then follow the steps described here https://github.com/dell/dkms#secure-boot or here https://wiki.archlinux.org/title/User:Krin/Secure_Boot,_full_disk_encryption,_and_TPM2_unlocking_install#Secure_boot. Note that this is a little more advanced. For initial testing, just load the module as described in the steps above or disable secure boot.
sudo dkms remove -m LenovoLegionLinux -v 1.0.0
reboot
This is only useful for advanced users that build there own kernel. A automatically generated patch is provided on the release page whenver a stable milestone has been reached: Releases
Initial Usage TestingPlease note:
- Please test in the given order; try to fix a failed text before going to the next.
- These tests are manual and in the terminal because this is an early version of this tool
- You can copy-and-paste the commands. Paste with
Ctrl+Shift+Vinside the terminal.
# After you have run from folder LenovoLegionLinux/kernel_module (for non DKMS)
sudo make reloadmodule
# Check the kernel log
sudo dmesgExpected result:
- You should see a line like the following like
legion PNP0C09:00: legion_laptop loaded for this device.PNP0C09might be replaced by other text.
Unexpected result:
insmod: ERROR: could not insert module legion-laptop.ko: Invalid module formatafter runningmake reloadmodulelegion PNP0C09:00: legion_laptop not loaded for this device. The kernel module was not loaded properly. Redo first test.insmod: ERROR: could not insert module legion-laptop.ko: Key was rejected by service: because you enable secure boot, you cannot load kernel modules. Disable secure boot (in BIOS) or sign the kernel module with a private key.- if you see the following, the driver was not tested for your laptop model; please raise an issue with the maintainer if you think it should be compatible. If you want to try it anyhow with your model use
sudo make forcereloadmodule
[126675.495983] legion PNP0C09:00: Module not useable for this laptop because it is not in allowlist. Notify maintainer if you want to add your device or force load with param force.
[126675.495984] legion PNP0C09:00: legion_laptop not loaded for this device
[126675.496014] legion: probe of PNP0C09:00 failed with error -12
# Read the current fancurve and other debug output
sudo cat /sys/kernel/debug/legion/fancurveExpected output:
- EC Chip ID should be 8227
- "fan curve points" size must NOT be 0
- the table that shows the current fan curve must NOT be only zeros, the actual values might change
- "fan curve current point id" and "EC Chip Version" might differ from the example
Example:
EC Chip ID: 8227
EC Chip Version: 2a4
fan curve current point id: 0
fan curve points size: 8
Current fan curve in UEFI
rpm1|rpm2|acceleration|deceleration|cpu_min_temp|cpu_max_temp|gpu_min_temp|gpu_max_temp|ic_min_temp|ic_max_temp
0 0 2 2 0 48 0 59 0 41
1700 1900 2 2 45 54 55 59 39 44
1900 2000 2 2 51 58 55 59 42 50
2200 2100 2 2 55 62 55 59 46 127
2300 2400 2 2 59 71 55 59 127 127
2600 2700 2 2 68 76 55 64 127 127
2900 3000 2 2 72 81 60 68 127 127
3500 3500 2 2 78 127 65 127 127 127
The fan curve is displayed as a table with the following columns:
rpm1: speed in rpm for fan1 at this point
rpm2: speed in rpm for fan1 at this point
acceleration: acceleration time (higher = slower)
deceleration: deceleration time (higher = slower)
cpu_min_temp: CPU temperature must go below this before leaving this point
cpu_max_temp: if CPU temperature is above this value, go to next point
gpu_min_temp: GPU temp must go below this before leaving this level
gpu_max_temp: if GPU temperature is above this value, go to next point
ic_min_temp: IC temp must go below this before leaving this level
ic_max_temp: if IC temperature above this value, go to next point
All temperatures are in degree Celsius.
Note: This is just a debug output. The fan curve is configured as usual using the standard hwmon interface.
Unexpected:
/sys/kernel/debug/legion/fancurve: No such file or directory: Kernel module was not loaded properlycat: /sys/kernel/debug/legion/fancurve: Permission deniedyou have forgot sudo
- display sensor values and check that it contains lines with "Fan 1", "Fan 2", "CPU Temperature", "GPU Temperature":
# Run the command sensors
sensors- display sensor values
- increase the CPU load and check if
- displayed CPU temperature increases
- displayed fan speed increases
- display sensor values
- increase the GPU load and check if GPU temperature changes
- displayed CPU temperature increases
- displayed fan speed increases
Expected output:
- Output of
sensorscontains something likelegion_hwmon-isa-0000 Adapter: ISA adapter Fan 1: 1737 RPM Fan 2: 1921 RPM CPU Temperature: +42.0°C GPU Temperature: +30.0°C IC Temperature: +41.0°C - if GPU is in deep sleep, its reported temperature is 0; run something on the GPU to test it
- temperatures are valid: in particular not 0 (except GPU see above)
- fan speeds are valid: if fan is off it is 0, otherwise greater than 1000 rpm
- temperatures and fan speeds increase as expected
Unexpected output:
Command 'sensors' not found: Installsensorsfrom the packagelm-sensors- no entries for "Fan 1", "Fan 2" etc. are shown. The kernel module was not loaded properly. Redo first test.
# Change the RPM of fans at the second and third point of the fan curve to 1500 rpm, 1600 rpm, 1700 rpm, 1800 rpm.
# Get root
sudo su
# As root enter
# 2. point, 1. fan
echo 1500 > /sys/module/legion_laptop/drivers/platform:legion/PNP0C09:00/hwmon/hwmon*/pwm1_auto_point2_pwm
# 2. point, 2.fan
echo 1600 > /sys/module/legion_laptop/drivers/platform:legion/PNP0C09:00/hwmon/hwmon*/pwm2_auto_point2_pwm
# 3. point, 1. fan
echo 1700 > /sys/module/legion_laptop/drivers/platform:legion/PNP0C09:00/hwmon/hwmon*/pwm1_auto_point3_pwm
# 3. point, 2.fan
echo 1800 > /sys/module/legion_laptop/drivers/platform:legion/PNP0C09:00/hwmon/hwmon*/pwm2_auto_point3_pwm
# Read the current fancurve and check if changes were made
cat /sys/kernel/debug/legion/fancurveExpected:
- the controller might have loaded default values if you pressed Ctrl+Q(or FN+Q on certain devices) to change the power mode or waited too long; then try again
- The entries in the fan curve are set to their values. The other values are not relevant (marked with XXXX)
rpm1|rpm2|acceleration|deceleration|cpu_min_temp|cpu_max_temp|gpu_min_temp|gpu_max_temp|ic_min_temp|ic_max_temp
XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX
1500 1600 XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX
1700 1800 XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX
XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX
XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX
XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX
XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX
XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX XXXX
If you want to reset your fan curve, just toggle with Ctrl+Q or Fn+Q the power mode or restart and everything is gone.
Unexpected:
file not found: please report your problem as a Github Issue- the values have not changed
- there are different values
Set a custom fan curve with the provided script. See Creating and Setting your own Fan Curve below.
- If you are satisfied with the test results, then you can install the kernel module permanently (see above).
- Create a GitHub Issue and report if the test work or fail.
- Please include exact laptop model
- If errors occurred, include output of commands.
- You also might to want to star this repository
you have to install the kernel module permanently (see above), otherwise you must reload it manually after each restart
The temperatures and fan speeds should be displayed in any graphical tool that monitors them, e.g. psensor. You have to install it first before running:
psensor
Start the GUI as root
# run from folder LenovoLegionLinux
sudo python/legion_linux/legion_linux/legion_gui.py
- with
Read from HWyou can read the current fan curve that is saved in the hardware and display it. - you can edit the values of the fancurve. They will not applied to hardware until your press
Apply to HW - press
Apply to HWto write the currently displayed fancurve to hardware and activate it - you can load and save a fancurve to a preset. Select the preset with the drop-down menu and press
Load from PresetorSave to preset. - loading a preset will just display it. You still have to press
Apply to HWto activate it - presets are stored in a yaml file in
/root/.config/legion_linux/. You can edit them also manually. - the number of points is fixed depending on power mode. Deactivated points are currently displayed as
0s. - lock fan controller: enabling this will freeze the current fan speed and the temperatures used to control the fan controller
Unexpected:
- an error is displayed or everything is
0: kernel module not loaded or installed (see above) or not compatible (do manual tests from above) - an value is not accepted when
Write to HW: the value is out-of-range and was not accepted by hardware
You can do the same as the GUI from a CLI program. It will access the same presets.
# run from folder LenovoLegionLinux
sudo python/legion_linux/legion_linux/legion_cli.pyusage: legion_cli.py [-h] {fancurve-write-preset-to-hw,fancurve-write-hw-to-preset,fancurve-write-file-to-hw,fancurve-write-hw-to-file} ...
Legion CLI
options:
-h, --help show this help message and exit
subcommands:
{fancurve-write-preset-to-hw,fancurve-write-hw-to-preset,fancurve-write-file-to-hw,fancurve-write-hw-to-file}
fancurve-write-preset-to-hw
Write fan curve from preset to hardware
fancurve-write-hw-to-preset
Write fan curve from hardware to preset
fancurve-write-file-to-hw
Write fan curve from file to hardware
fancurve-write-hw-to-file
Write fan curve from hardware to file
Just run the script to set the fan curve. It is in the folder LenovoLegionLinux.
# Go to folder LenovoLegionLinux and run it. It should output "Writing fancurve successful!" if it finishes successful
sudo ./setmyfancurve.sh
# And check new fan curve
sudo cat /sys/kernel/debug/legion/fancurveOpen the file setmyfancurve.sh and edit it to adapt the values in the script to create your own fan curve. Follow the description in the file.
Unexpected output:
bash: ./setmyfancurve.sh: Permission denied: You have to make the script executable withchmod +x ./setmyfancurvefirst- script does not end with "fancurve set": maybe path to hwmon changed; Please report this
Note:
- If you want to reset your fan curve, just toggle with Ctrl+Q or Fn+Q the power mode or restart and everything is gone.
- Currently, there is no GUI available.
- Currently, the hardware resets the fan curve randomly or if you change power mode, suspend, or restart. Just run the script again.
- You might want to create different scripts for different usages. Just copy it and adapt the values.
For this to work, you must install the kernel module permanently (see above). Alternatively, you can restart the the power daemon (systemctl restart power-profiles-daemon.service in Ubuntu) after reloading the kernel module (see above).
With the GUI, the current power mode can be changed by selecting the mode in the box labeled with Power mode/platform profile.
In Ubuntu/Gnome go to Settings->Power->Power Mode/Power Saving Option or the applet in the top right.
# List all profiles (power-saver = quiet= blue)
powerprofilesctl list
# performance:
# Driver: platform_profile
# Degraded: no
# balanced:
# Driver: platform_profile
# * power-saver:
# Driver: platform_profile
# Set a profile, e.g. power-saver=quiet
powerprofilesctl set power-saver
# or balanced
powerprofilesctl set balanced
# or performance
powerprofilesctl set performanceAlternatively, you can also directly access it on a lower level:
# Access current profile
cat /sys/firmware/acpi/platform_profile
# Change current profile (AS ROOT): available modes quiet, balanced, performance, balanced-performance
# quiet = power-saver
echo quiet > /sys/firmware/acpi/platform_profile
# or balanced
echo balanced > /sys/firmware/acpi/platform_profile
# or performance
echo performance > /sys/firmware/acpi/platform_profile
# or custom-mode = balanced-performance (not available on all models); the LED should turn pink/purple
echo balanced-performance > /sys/firmware/acpi/platform_profileIf you model support the custom power mode, then you can:
- enter custom power mode
- LED should turn pink/purple
- customnize CPU/GPU boost and TGP settings
You can change to it with in the GUI: Open the GUI and select "Custom Mode" for power profile. Alternativley, you can change to it with in the command line with:
echo balanced-performance > /sys/firmware/acpi/platform_profileUnfortunately, the power-profile-deamon or powerprofilesctl currently do not support this mode.
If the laptop stays cool for a longer time, it will enable the "mini fan curve", a special fan curve with only a few points. It will usually spin the fans. You can enable or disable that. If you want to use your configured fan curve in any case, disable it. The mini fan curve is not available on all models (you will see error for mini fan curve when running cat /sys/kernel/debug/legion/fancurve).
With the GUI, the mini fan curve is enabled/disabled by checking/unchecking the box Minifancurve if cold and pressing Apply to HW.
The LLL Daemon is only supported in Systemd (if you what to add OpenRC support you can open a Pull Request) to install you need to run the systemd_install.sh unside the extra folder.
This Daemon allow to chnage automatically bettwen fan profiles set in the gui depending of the power mode and if the laptop is or not plug in: These are the profiles avaiable:
- quiet-battery - Fan Profile on quiet mode on battery
- balance-battery - Fan Profile on balance mode on battery
- balanced-performance-battery - Fan Profile on custom mode on battery
- quiet-ac - Fan Profile on quiet mode on charger
- balance-ac - Fan Profile on balance mode on charger
- balanced-performance-ac - Fan Profile on custom mode on charger
- performance-ac - Fan Profile on performance mode on charger
Exemple profiles are here can also be set via the gui for easy set up:
1 - Set the Fan Curve you like to use
2 - Chose on the profile above in Fancurve Preset and hit Sate to Preset (will ask for you password)
3 - Set all the profiles
4 - Go to the Automation tab and enable the option Lenovo Legion Laptop Support Daemon Enable
This systemd service also have extras features that can be activated by editing .env located /etc/legion_linux/.env:
- CPU_CONTROL - activate use of RyzenADJ on AMD or undervolt on Intel to chnage make custom cpu setting for each power mode (pls edit the command inside $() after reading the readme for each project)
- CPU_CC_BAT_BP - Custom Cpu setting for custom mode on battery
- CPU_CC_AC_BP - Custom Cpu setting for custom mode on charger
- CPU_CC_BAT_Q - Custom Cpu setting for quiet mode on battery
- CPU_CC_AC_Q - Custom Cpu setting for quiet mode on charger
- CPU_CC_BAT_B - Custom Cpu setting for balance mode on battery
- CPU_CC_AC_B - Custom Cpu setting for balance mode on charger
- CPU_CC_AC_P - Custom Cpu setting for performance mode on charger
- GPU TDP Control:
-
TEAM_GREEN=1 - use
nvidia-smi -plcommand to chnage the TDP of the GPU (only work on driver 525 and lower) -
TEAM_RED=1 - use
rocm-smi --setpoweroverdrivecommand to chnage the TDP of the GPU- GPU_TDP_BAT_BP - Custom GPU TDP for custom mode on battery
- GPU_TDP_AC_BP - Custom GPU TDP for custom mode on charger
- GPU_TDP_BAT_Q - Custom GPU TDP for quiet mode on battery
- GPU_TDP_AC_Q - Custom GPU TDP for quiet mode on charger
- GPU_TDP_BAT_B - Custom GPU TDP for balance mode on battery
- GPU_TDP_AC_B - Custom GPU TDP for balance mode on charger
- GPU_TDP_AC_P - Custom GPU TDP for performance mode on charger
-
Note: The default values in the .env file are from RTX 3070
-
NOTE: We also have acpi action and event inside the extra folder but are in develoment and testing (use at your own risk).
You can lock the current fan speed. If it is locked, the fan speed will stays constant and does not react to temperature changes. You might want to lock the fan at a high speed during a game. I would not recommend keeping it locked all the time. If your fan controller gets locked accidentally, e.g. by Windows tools, you can unlock it. A locked fan controller might be the reason for a non-working fan control. If the fan controller is locked, the additional temperature sensors are not updated anymore and also stay constant.
With the GUI, the fan controller is locked by checking the box Lock fan controller and pressing Apply to HW.
The fan can be set to maximum fan speed regardless of temperature. This is sometimes called extreme cooling mode or dust cleaning mode. Do not enable this for long periods of time, because it might degrade your fans faster.
With the GUI, the current fan speed is set to the maximum possible value by checking Set speed to maximum fan speed and pressing Apply to HW.
This is currently not available in many models.
You can enable battery conservation mode. When conservation mode is enabled, the constant charging of the battery is disabled when the AC (charger) is plugged in. It will try to keep your battery state of charge at around 50%. This is said to prolong the battery life.
With the GUI, the battery conservation is enabled by checking the box Battery conservation (changes should apply immediately).
You can lock the Fn keys. You can do it by pressing Fn+Esc. This should also toggle the light in the Esc key (if available in your model). If enabled, the special functions, e.g. increase sound volume on F3, is triggered without pressing Fn.
With the GUI, the Fn-lock is enabled/disabled by checking/unchecking the box Fn Lock (changes should apply immediately).
You can enable or disable the touch pad. You can do it by pressing Fn+F10 (or similar).
With the GUI, the touch pad is enabled/disabled by checking/unchecking the box Touch Pad Enabled (changes should apply immediately).
- 4 Zone RGB backlight: please use https://github.com/4JX/L5P-Keyboard-RGB
- off/on white backlight or off/medium/bright white backlight: supported by this software but can be controlled by all programs for LED control in linux
Some bugs cannot be fixed due to the firmware in the hardware:
- size of fan curve cannot be changed (size is 10 on performance mode, 9 otherwise) but you can practically disable points by setting the temperature limits to 127, as already done when writing to
auto_points_size
Thank you for your work on Windows tools that were the basis of the Linux support:
- SmokelessCPU, for reverse engineering the embedded controller firmware and finding the direct IO control method to communicate with the embedded controller
- FanFella, for finding the address to lock or unlock the fan controller
- Bartosz Cichecki, for creating LenovoLegionToolkit, a Windows tool for newer Legion models that controls the Laptop with ACPI/WMI methods. Even this README is heavily inspired on it.
- 0x1F9F1, for reverse engineering the fan curve in the embedded controller firmware and creating the Windows tool LegionFanControl
- ViRb3, for creating Lenovo Controller, which was used as a base for [LenovoLegionToolkit]
- Luke Cama, for his closed-source tool LegionFanControl that controls older laptops with directly with the embedded controller
- David Woodhouse, for his work on the ideapad Linux driver ideapad-laptop, which was a heavy inspiration for this Linux driver
Thank you for your contribution for the Linux support:
- normaneye, fixing GPU temperature bug in GUI
- Petingoso, fix script to run withou sudo
- XenHat, fix README
Also please tell me if it works or does not work on your laptop.
These are the temperatures measured and used by the embedded controller. Only they are relevant for the fan controller. They are provided by the new kernel module and otherwise not accessible because they are read from the embedded controller.
They report the fan speed in revolutions per minute (rpm). They are provided by the new kernel module and otherwise not accessible because they are read from the embedded controller.
The CPU, GPU, and "IC" temperature is used. These are (usually) additional sensors that are different from the temperature sensors that are reported when you do not use the kernel model. In particular, the "IC" temperature limit might be set to a low value which results in almost-always running fans.
See above. In particular, the "IC" temperature sensor.
I have no reason to believe that. As far as I know and observed, only the temperatures are used.
If they always have roughly constant speed, maybe you have locked the fan controller, often called locking fan speed. You can unlock/lock the fan speed controller in the GUI (see above). I would recommend not locking them. Doing a BIOS/UEFI update usually also unlocks it. But beware and consider making a BIOS (re)-update.
If the fans never spin up fast even under hight load, the fan controller might be locked (above). Additionally, also check that the reported temperatures for CPU (or GPU) really increase under load. Only, the temperatures "CPU Temperature", "GPU Temperature", and "IC Temperature" are used for fan control. These, are used internally by the fan controller in hardware.
If otherwise the fans never stop, you might have set a very low upper temperature limit for CPU, GPU or IC. Many models also come with a low temperature limit even on quiet mode, so fans never really turn off. You can just increase the temperature limits for the lowest level.
See above.
Even when browsing there might be small bursts of work for the CPU. So it gets hot for a short time and the fans turn on. You can
- change the fan curve, in particular increase temperature limit and increase acceleration time
- disable CPU boost mode
- also see above
See above.
See above.
Maybe there was a problem during the BIOS update. Downgrade to a older version again. Then test it with the old version. Then do the BIOS upgrade again and check with the version.
The easiest way is to downgrade to a older version and then upgrade to the current version again. Also test it with the old version. You can also just try reset the embedded controller with:
- shutdown laptop, unplug everything (charger, USB, ...)
- press AND HOLD power button for 60 seconds; keep holding even if the it turns on
- after 60 seconds release power button
- press power button shortly to turn laptop on
You can switch the mode by pressing Fn + Q and it will change the mode in the firmware and the color of the LED, even without any driver support (= without Lenovo Legion Linux).
Changing mode without Lenovo Legion Linux is purely implemented in hardware:
- color of LED changes
- fan curve in embedded controller changes
- other purely hardware configs might also change, but I have not observed one
as far as I know, power saving or performance of CPU does not change, as this is controlled by kernel or tools like cpupower- an analysis of the ACPI firmware, which is "stored in hardware", shows that some power options, e.g. the STAPM limit, of the CPU and GPU are changed via ACPI calls. This can be observed by changing power mode with Fn+Q and checking CPU power limits, e.g. with ryzenadj for AMD CPUs.
However, no changes to the GPU power limits are observed on NVIDIA GPUs, which might indicate that the integration of ACPI and GPU driver is faulty in LinuxOn driver 535 GPU power limits on nvidia get change on battery power (40w on quiet e 50w on balance for RTX 3070), on power adapter the power limit are allways set to max on peformance (reported by nvidia-smi), but more power is allow to the gpu on performance or custom mode in demanding GPU tasks. - without Lenovo Legion Linux the kernel or other system tools will not know that you have changed the mode
Changing mode with Lenovo Legion Linux:
- it changes all of the above
- additionally the driver in Lenovo Legion Linux makes this information available to the kernel and other services like the Power Profiles daemon; these can, if configured, change the performance of the CPU or GPU
In Windows it is similar: Changing the power mode is reported to the system or tools like Vantage which change the power plan.
The difference in usable performance (FPS) is minimal. Use performance mode to get the utmost highest performance, otherwise use balanced mode.
First check that the fan curve is set properly and this is not a misconfiguration. Then check if the temperatures used for fan control (see "new temperatures" above) have low values on idle. If just one fan is on full speed but the other one is controlled according to fan curve, then you should reset the BIOS and EC controller.
You can change the fan curve and minimal fan speed that are programmed into the hardware
- off: turn off fan if cold enough
- level 1: minimal fan speed level 1
- level 2: minimal fan speed level 2
- level 3: minimal fan speed level 3
The power mode can be changed with Fn+Q. Additionally, this driver makes it available to default tools like power-profiles-daemon. A graphical GNOME applet uses power-profiles-daemon to change the power mode by software. It is not provided by this tool, but is a standard tool already integrated into GNOME. For KDE there is the graphical tool powerdevil, which also uses power-profiles-daemon internally. If you just want to change it by software and do not need a GUI, you could use the commandline (see README).
Maybe power-profiles-daemon or this applet need to be installed first. To test that it works in principal, you try changing with the CLI, see "Powermode -> Modify with CLI" in the README. If this works, than the rest is just a matter of the (KDE/GNOME/...) applet.
It almost works, but (some) temperature sensor/chaning point in fan control/ (some) fan speed is not working. What should I do?
First, try to reset the embedded controller (see above) or do a BIOS update (even downgrade/upgrade possible) to reset everything.
Please recompile/reinstall, see Permanent Install Instructions.
gsettings set org.gnome.settings-daemon.plugins.power idle-brightness 100This describes A way to configure and use it in Ubuntu using XServer. It configures it such that everything runs on iGPU if not otherwise selected.
- Check that Hybrid Mode is configured in the BIOS
- Check that XServer is used and not Wayland
# It should output something like: x11
echo $XDG_SESSION_TYPE- Install prime and configure on demand. A restart might be needed
sudo prime-select on-demand- Check with
nvidia-smithat no programs run on the GPU.
sudo nvidia-smiNote that the one process 0 N/A N/A *** G /usr/lib/xorg/Xorg 4MiB is ok. Moreover, note
that running nvidia-smi powers up the GPU for some time.
- Allow d3cold mode
# Note: only of the commands is needed; use the path to the device which is the GPU; you probably have
# to adapt the path
echo 1 > /sys/devices/pci0000\:00/0000\:00\:01.1/d3cold_allowed
echo 1 > /sys/devices/pci0000\:00/0000\:00\:01.0/d3cold_allowed Check that GPU Runtime D3 status is enabled
sudo cat /proc/driver/nvidia/gpus/0000:01:00.0/power- Check the current state of the GPU
# Only one is needed - adapt path to your GPU
# This should output D3cold
cat /sys/devices/pci0000\:00/0000\:00\:01.0/power_state
cat /sys/devices/pci0000\:00/0000\:00\:01.1/power_state - Run
nvidia-smi, which power the GPU up for some time. Check thepower_stateagain. It should go toD0and then go toD3coldafter some time. Compared tonvidia-smirunningcat /sys/devices/pci0000\:00/0000\:00\:01.1/power_statedoes not seem to wake up the GPU.
sudo cat /proc/driver/nvidia/gpus/0000:01:00.0/power
- What exactly is the third temperature? Currently, it is currently called IC Temperature.
- Can I use quiet mode for gaming?
The software consists of two parts:
- kernel module in folder
kernel_module- accesses embedded controller by writing to its memory
- creates new "files"
/sys/kernel/debug/legion/fancurve,/sys/module/legion_laptop/drivers/platform\:legion/PNP0C09\:00/powermode,/sys/class/hwmon/X/temp1_input,/sys/class/hwmon/X/pwmY_auto_pointZ_pwm, ... that allow to read the temperatue sensors, control the fan curve, change power mode etc.
- python package in
pythonlegion.py: model the fan curve and other objects in Python; encapsulate reading and writing to the "files" provided by the above kernel module and other modules like ideapad_laptop; all access to anything goes through this Python module.legion_gui.py: a GUI program that useslegion.pyto change setttingslegion_cli.py: a CLI program that useslegion.pyto change setttings
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