Xev Bellringer | 4k

Screen 0: minimum 320 x 200, current 3840 x 2160, maximum 16384 x 16384 DRI2 Provider: 0 DRI3 Provider: 0 DRI3: true ... Dots per inch: 192 x 192

| Symptom | Likely cause | Fix | |---------|--------------|-----| | | TARGET_KEYSYM or TARGET_MODS mismatched, or audio player not found. | Run xev manually, press the key, note the exact keysym and state . Verify the sound file plays with xev bellringer 4k

To detect Ctrl + Alt + B , you would look for: Screen 0: minimum 320 x 200, current 3840

If you need to limit the bell to a specific screen region (e.g., only when the mouse is in the top‑right 200 px of a 4K screen), you’ll have to convert between logical coordinates (what you see) and raw coordinates that xev reports. Verify the sound file plays with To detect

Introduction

Below is a script that: