Added acpi disabling to the wiki

1 files changed, 41 insertions, 0 deletions

diff --git a/docs/desktop/desktop.md b/docs/desktop/desktop.md
index efd86b0..fa5bd95 100644
--- a/docs/desktop/desktop.md
+++ b/docs/desktop/desktop.md
@@ -5,3 +5,44 @@ This page describes several useful tips and configurations that I've used.
 [Thunderbird](thunderbird.md)
 
 [Syncthing on Artix](syncthing.md)
+
+## Disabling ACPI for sleep
+
+Somtimes we cannot sleep the computer due to ACPI devices being annoying.
+To fix this, we need to disable their wakeup ability.
+
+The following command will look at the status of the ACPI devices:
+
+	cat /proc/acpi/wakeup
+
+The following command will toggle the status of the ACPI device:
+
+	echo GP12 > /proc/acpi/wakeup
+
+### Making changes persistant
+
+To make the changes persistant, we shall use a oneshot systemd service.
+
+	/etc/systemd/system/disable-acpi.service
+	----------------------------------------
+	[Unit]
+	Description="Disable ACPI for sleeping"
+	
+	[Service]
+	ExecStart=/bin/sh -c "/etc/suspend"
+	Type=oneshot
+	
+	[Install]
+	WantedBy=multi-user.target
+
+The script /etc/suspend` works by disabling all devices if they are enabled:
+
+	#!/bin/sh
+
+	declare -a devices=(INSERT DEVICE LIST HERE)
+	for device in "${devices[@]}"; do
+	    if grep -qw ^$device.*enabled /proc/acpi/wakeup; then
+	        sudo sh -c "echo $device > /proc/acpi/wakeup"
+	    fi
+	done
+