Laptop control, udev rules, xorg configs, README

README.md

@@ -1,3 +1,18 @@
 # legion-7
 
-Repository with various scripts/configs for Arch Linux on the Lenovo Legion 7 (2021)
+Repository with various scripts/configs for Arch Linux on the Lenovo Legion 7 (2021).
+
+Scripts in the `bin` folder should be placed in `/usr/local/bin` or a similar directory and given execute permissions.
+
+- `brightness_up` and `brightness_down`: See which GPU is connected and control brightness using ACPI
+- `conservation_mode`: Toggle battery conservation mode which limits charge to 60% to preserve its health
+- `power_saving_mode`: Change CPU governor, brightness, and refresh rate to extend battery life
+
+Files in the `udev` folder should be placed in `/etc/udev/rules.d` and owned by `root`.
+
+- `backlight.rules`: Gives normal users access to backlight controls
+- `touchpad_input.rules`: Maps the touchpad's variable `/dev/input/event*` path to the static `/dev/input/touchpad` for VFIO passthrough
+
+FIles in the `xorg` folder should be placed in `/etc/X11/xorg.conf.d` and owned by `root`.
+
+- `10-monitor.conf`: Enables 165Hz on boot.

bin/brightness_down

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+#!/bin/bash
+
+# Check if AMD or NVIDIA GPU is connected
+BrPath=
+for Dir in /sys/class/backlight/amdgpu_*
+do
+    if [ -d "$Dir" ]
+    then
+       BrPath="$Dir"
+       break
+    fi
+done
+
+if [ -d "$BrPath" ]
+then
+    :
+    # echo "Found AMD GPU folder $BrPath"
+else
+    BrPath=/sys/class/backlight/nvidia_0
+    # echo "Didn't find AMD GPU, defaulting to $BrPath"
+fi
+
+# Step brightness by 10%
+BrCur=$(cat $BrPath/brightness)
+BrMax=$(cat $BrPath/max_brightness)
+BrStep=$(($BrMax/10))
+
+if [ "$(($BrCur - $BrStep))" -lt "$BrStep" ]
+then
+    echo "$BrStep" > "${BrPath}/brightness"
+else
+    BrCur=$(($BrCur-$BrStep))
+    echo "$BrCur" > "${BrPath}/brightness"
+fi

bin/brightness_up

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+#!/bin/bash
+
+# Check if AMD or NVIDIA GPU is connected
+BrPath=
+for Dir in /sys/class/backlight/amdgpu_*
+do
+    if [ -d "$Dir" ]
+    then
+       BrPath="$Dir"
+       break
+    fi
+done
+
+if [ -d "$BrPath" ]
+then
+    :
+    #echo "Found AMD GPU folder $BrPath"
+else
+    BrPath=/sys/class/backlight/nvidia_0
+    #echo "Didn't find AMD GPU, defaulting to $BrPath"
+fi
+
+# Step brightness by 10%
+BrCur=$(cat $BrPath/brightness)
+BrMax=$(cat $BrPath/max_brightness)
+BrStep=$(($BrMax/10))
+
+if [ "$(($BrCur + $BrStep))" -gt "$BrMax" ]
+then
+    echo "$BrMax" > "${BrPath}/brightness"
+else
+    BrCur=$(($BrCur+$BrStep))
+    echo "$BrCur" > "${BrPath}/brightness"
+fi

bin/conservation_mode

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+#!/bin/bash
+
+# Run as sudo
+[ "$UID" -eq 0 ] || exec sudo "$0" "$@"
+
+Mode=$(cat /sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode)
+
+if [ "$Mode" -eq "1" ]
+then
+    echo 0 > /sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode
+    echo "Battery Conservation Mode is now inactive"
+else
+    echo 1 > /sys/bus/platform/drivers/ideapad_acpi/VPC2004:00/conservation_mode
+    echo "Battery Conservation Mode is now active"
+fi

bin/power_saving_mode

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+#!/bin/bash
+
+# Run as sudo
+[ "$UID" -eq 0 ] || exec sudo "$0" "$@"
+
+if [ "$1" == "on" ]
+then
+    for file in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor;
+    do
+        echo "powersave" > $file;
+    done
+    xrandr --output DP-4 --mode 2560x1600 --rate 60 > /dev/null 2>&1
+    xrandr --output eDP-1 --mode 2560x1600 --rate 60 > /dev/null 2>&1
+    for i in {1..3}; do brightness_down; done
+    echo "Power Saving Mode is now active"
+elif [ "$1" == "off" ]
+then
+    for file in /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor;
+    do
+        echo "schedutil" > $file;
+    done
+    xrandr --output DP-4 --mode 2560x1600 --rate 165 > /dev/null 2>&1
+    xrandr --output eDP-1 --mode 2560x1600 --rate 165 > /dev/null 2>&1
+    for i in {1..3}; do brightness_up; done
+    echo "Power Saving Mode is now inactive"
+else
+    echo "Usage: power_saving_mode [on/off]"
+fi

udev/backlight.rules

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+ACTION=="add", SUBSYSTEM=="backlight", KERNEL=="nvidia_0", RUN+="/usr/bin/chgrp video /sys/class/backlight/%k/brightness"
+ACTION=="add", SUBSYSTEM=="backlight", KERNEL=="nvidia_0", RUN+="/usr/bin/chmod g+rw /sys/class/backlight/%k/brightness"
+ACTION=="add", SUBSYSTEM=="backlight", KERNEL=="nvidia_0", RUN+="/usr/bin/chgrp video /sys/class/backlight/%k/max_brightness"
+ACTION=="add", SUBSYSTEM=="backlight", KERNEL=="nvidia_0", RUN+="/usr/bin/chmod g+rw /sys/class/backlight/%k/max_brightness"
+ACTION=="add", SUBSYSTEM=="backlight", KERNEL=="amdgpu_bl*", RUN+="/usr/bin/chgrp video /sys/class/backlight/%k/brightness"
+ACTION=="add", SUBSYSTEM=="backlight", KERNEL=="amdgpu_bl*", RUN+="/usr/bin/chmod g+rw /sys/class/backlight/%k/brightness"
+ACTION=="add", SUBSYSTEM=="backlight", KERNEL=="amdgpu_bl*", RUN+="/usr/bin/chgrp video /sys/class/backlight/%k/max_brightness"
+ACTION=="add", SUBSYSTEM=="backlight", KERNEL=="amdgpu_bl*", RUN+="/usr/bin/chmod g+rw /sys/class/backlight/%k/max_brightness"

udev/touchpad_input.rules

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+KERNEL=="event[0-9]|event[0-9][0-9]", SUBSYSTEM=="input", ATTRS{name}=="MSFT0001:00 06CB:CE44 Touchpad", ACTION=="add", SYMLINK+="input/touchpad"

xorg/10-monitor.conf

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+Section "Screen"
+    Identifier "Screen 0"
+    Subsection "Display"
+        Modes  "2560x1600_165"
+    EndSubsection
+EndSection