Fixing Black Bars on Ultrawide Monitor (Dell XPS / Intel GPU)

Issue: External ultrawide monitor (e.g. LG 38”) shows black bars top and bottom despite using native resolution (3840×1600).

✅ Symptoms

• Resolution is set correctly to 3840 × 1600

• Monitor works fine with other laptops

• Intel GPU is active (typical on Dell XPS models)

• Monitor shows black bars top/bottom, not sides

?️ Fix Steps

1. Open Display Settings
   Settings > System > Display > Advanced display settings

2. Select the external monitor

3. Change Refresh Rate from 60 Hz to 59.94 Hz or 59.99 Hz

4. Click Apply