How to Fix Touchscreen Stops Working After Sleep on the GPD Pocket 4 (8840U)
The touchscreen stops responding after waking the GPD Pocket 4 (Ryzen 7 8840U) from sleep. On Windows the permanent fix reported by owners is a clean Windows 11 install from Microsoft instead of the GPD factory image; on Linux, wake-time device refresh scripts restore touch and the fingerprint reader.