Initial commit

fix_surface_interrupts.sh

@@ -0,0 +1,22 @@
+#!/bin/bash
+# This script is designed to mitigate a common interrupt storm issue on Surface devices running Linux.
+# It identifies the IRQ that is firing excessively and disables it.
+
+# Find the IRQ with the highest number of interrupts.
+# We exclude the local timer interrupts (LOC) as they are expected to be high.
+HIGH_IRQ=$(cat /proc/interrupts | grep -v "LOC" | sort -n -k 2 | tail -n 1 | cut -d: -f1 | tr -d ' ')
+
+if [ -z "$HIGH_IRQ" ]; then
+  echo "Could not find a high IRQ to disable."
+  exit 1
+fi
+
+echo "Disabling IRQ $HIGH_IRQ"
+
+# Disable the IRQ by writing it to /proc/irq/{number}/smp_affinity.
+# This will prevent the interrupt from being handled by any CPU.
+echo 0 > "/proc/irq/$HIGH_IRQ/smp_affinity"
+
+echo "IRQ $HIGH_IRQ has been disabled."
+echo "The associated device (likely the touchscreen) may no longer function."
+echo "To re-enable, you can write the original smp_affinity value back, or simply reboot."