Update: Found the root cause and workaround.
The issue is caused by the ELAN0415 I2C HID touchpad waking the laptop
during s2idle suspend.
The wake source was identified as:
```
i2c-ELAN0415:00
```
Disabling ACPI wake device GP17 did not solve the issue.
Workaround:
Created a systemd sleep hook:
```
/lib/systemd/system-sleep/elan-suspend-fix
```
Script:
```bash
#!/bin/bash
case "$1" in
pre)
echo i2c-ELAN0415:00 > /sys/bus/i2c/drivers/i2c_hid_acpi/unbind
;;
post)
sleep 2
echo i2c-ELAN0415:00 > /sys/bus/i2c/drivers/i2c_hid_acpi/bind
;;
esac
```
After applying this workaround:
- Suspend works correctly
- Laptop no longer immediately wakes
- ELAN touchpad works after resume
Tested on:
Acer TravelLite TL14-42M
AMD Ryzen 7 7730U
Ubuntu 24.04.4 LTS
Kernel 6.17.0-1030-oem
The issue appears to be related to ELAN0415 I2C HID wake handling during
s2idle suspend.
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https://bugs.launchpad.net/bugs/2162061
Title:
ELAN0415 I2C HID touchpad causes immediate wake after suspend on AMD
laptop
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