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Fix the haptic trackpad restore on first boot

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This commit is contained in:
David Heinemeier Hansson
2026-03-19 13:48:44 -04:00
parent 3fdd0e5d42
commit 4d46334d62
1 changed files with 15 additions and 2 deletions
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install/config/hardware/fix-dell-xps-haptic-touchpad.sh
+15 -2
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@@ -6,11 +6,24 @@
if cat /sys/class/dmi/id/product_name 2>/dev/null | grep -qi "XPS" \
&& ls /sys/bus/i2c/devices/i2c-VEN_06CB:00 2>/dev/null; then
# Disable runtime PM for I2C controller so haptic state isn't lost
sudo tee /etc/udev/rules.d/99-dell-xps-haptic-touchpad.rules << 'EOF'
# Disable runtime PM for I2C controller to prevent haptic touchpad losing feedback after suspend
ACTION=="add", SUBSYSTEM=="pci", KERNEL=="0000:00:19.0", ATTR{power/control}="on"
ACTION=="add", SUBSYSTEM=="platform", KERNEL=="i2c_designware.0", ATTR{power/control}="on"
EOF
sudo udevadm control --reload-rules
sudo udevadm trigger --subsystem-match=pci --attr-match=device=0x00:19.0 2>/dev/null
# Rebind the I2C HID touchpad on resume to fully reinitialize haptic engine
sudo tee /usr/lib/systemd/system-sleep/dell-xps-haptic-touchpad << 'HOOK'
#!/bin/bash
if [[ $1 == "post" ]]; then
if [[ -d /sys/bus/i2c/devices/i2c-VEN_06CB:00 ]]; then
echo "i2c-VEN_06CB:00" > /sys/bus/i2c/drivers/i2c_hid_acpi/unbind 2>/dev/null
sleep 1
echo "i2c-VEN_06CB:00" > /sys/bus/i2c/drivers/i2c_hid_acpi/bind 2>/dev/null
fi
fi
HOOK
sudo chmod +x /usr/lib/systemd/system-sleep/dell-xps-haptic-touchpad
fi