From 61a54ec64c6f7139bb544fe9ac29b48d2ab72561 Mon Sep 17 00:00:00 2001
From: Nikolaos Karaolidis <nick@karaolidis.com>
Date: Tue, 9 Nov 2021 15:00:53 +0000
Subject: [PATCH] Laptop control, udev rules, xorg configs, README

---
 README.md                 | 17 ++++++++++++++++-
 bin/brightness_down       | 34 ++++++++++++++++++++++++++++++++++
 bin/brightness_up         | 34 ++++++++++++++++++++++++++++++++++
 bin/conservation_mode     | 15 +++++++++++++++
 bin/power_saving_mode     | 28 ++++++++++++++++++++++++++++
 udev/backlight.rules      |  8 ++++++++
 udev/touchpad_input.rules |  1 +
 xorg/10-monitor.conf      |  6 ++++++
 8 files changed, 142 insertions(+), 1 deletion(-)
 create mode 100644 bin/brightness_down
 create mode 100644 bin/brightness_up
 create mode 100644 bin/conservation_mode
 create mode 100644 bin/power_saving_mode
 create mode 100644 udev/backlight.rules
 create mode 100644 udev/touchpad_input.rules
 create mode 100644 xorg/10-monitor.conf

diff --git a/README.md b/README.md
index 6ccb22a..b8c2547 100644
--- a/README.md
+++ b/README.md
@@ -1,3 +1,18 @@
 # legion-7
 
-Repository with various scripts/configs for Arch Linux on the Lenovo Legion 7 (2021)
\ No newline at end of file
+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.
diff --git a/bin/brightness_down b/bin/brightness_down
new file mode 100644
index 0000000..a654662
--- /dev/null
+++ b/bin/brightness_down
@@ -0,0 +1,34 @@
+#!/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" > "${BrPath}/brightness"
+fi
diff --git a/bin/brightness_up b/bin/brightness_up
new file mode 100644
index 0000000..7d7a766
--- /dev/null
+++ b/bin/brightness_up
@@ -0,0 +1,34 @@
+#!/bin/bash
+
+# Check if AMD or NVIDIA GPU is connected
+BrPath=
+for Dir in /sys/class/backlight/amdgpu_*
+do
+    if [ -d "$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" > "${BrPath}/brightness"
+fi
diff --git a/bin/conservation_mode b/bin/conservation_mode
new file mode 100644
index 0000000..c7f8887
--- /dev/null
+++ b/bin/conservation_mode
@@ -0,0 +1,15 @@
+#!/bin/bash
+
+# Run as sudo
+[ "$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
diff --git a/bin/power_saving_mode b/bin/power_saving_mode
new file mode 100644
index 0000000..0b72ac9
--- /dev/null
+++ b/bin/power_saving_mode
@@ -0,0 +1,28 @@
+#!/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
diff --git a/udev/backlight.rules b/udev/backlight.rules
new file mode 100644
index 0000000..15afb72
--- /dev/null
+++ b/udev/backlight.rules
@@ -0,0 +1,8 @@
+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"
diff --git a/udev/touchpad_input.rules b/udev/touchpad_input.rules
new file mode 100644
index 0000000..015af90
--- /dev/null
+++ b/udev/touchpad_input.rules
@@ -0,0 +1 @@
+KERNEL=="event[0-9]|event[0-9][0-9]", SUBSYSTEM=="input", ATTRS{name}=="MSFT0001:00 06CB:CE44 Touchpad", ACTION=="add", SYMLINK+="input/touchpad"
diff --git a/xorg/10-monitor.conf b/xorg/10-monitor.conf
new file mode 100644
index 0000000..96cb34d
--- /dev/null
+++ b/xorg/10-monitor.conf
@@ -0,0 +1,6 @@
+Section "Screen"
+    Identifier "Screen 0"
+    Subsection "Display"
+        Modes  "2560x1600_165"
+    EndSubsection
+EndSection