How to Set Up Dual Monitors for Maximum Productivity

- Two monitors (ideally matching resolution and size)
- Cables (HDMI, DisplayPort, USB-C, or Thunderbolt)
- A computer that supports multiple displays
- A desk large enough to fit both

┌────────────┐  ┌────────────┐
│  Secondary │  │   Primary  │
│            │  │            │
│  (side)    │  │  (center)  │
└────────────┘  └────────────┘
       ↑                ↑
   Slight angle    Directly in front

Right-handed:  Primary center, secondary to the right
Left-handed:   Primary center, secondary to the left

Settings → System → Display → Detect → Identify

Select primary monitor → check "Make this my main display"

Landscape:  Standard (most common)
Portrait:   Good for coding, reading documents

Settings → Scale & layout → Adjust per monitor

System Settings → Displays

"Mirror or extend to" → "Extend desktop" (for productivity)

Settings → Displays

System Settings → Display and Monitor

# List outputs
xrandr

# Set up dual monitors (extend)
xrandr --output HDMI-1 --primary --auto --output HDMI-2 --auto --right-of HDMI-1

- Main work application (code editor, design tool, document)
- Browser for research
- Communication tools (Slack, Teams) — peek only

- Reference material (docs, specs, API reference)
- Terminal / command line
- Email client
- Music player / Spotify
- Monitoring dashboards
- Video calls (camera on secondary)

1. Check cable connection
2. Try a different cable
3. Update graphics drivers
4. Restart computer
5. Check monitor input source

Solution:
- Match scaling settings (Windows/macOS)
- Position lower-res monitor lower in arrangement settings
- Use the higher-res monitor as primary

Fix:
- The cursor can only move between monitors at the edges
- Adjust monitor arrangement so edges align
- In Windows: turn off "Snap fill" or "Snap to layout"