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Troubleshooting

A blank, blurry or slow picture

Find the cause of a blank picture, small text or slow motion, one setting at a time.

Your computer
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For a blank image, check Decky’s Screen Recording permission on the source Mac. Reopen Decky if macOS requests it, then reconnect and check the source selected for Mirror.

Step by step

  1. For a blank image, check Decky’s Screen Recording permission on the source Mac. Reopen Decky if macOS requests it, then reconnect and check the source selected for Mirror.
  2. For small or blurry text, check Resolution and Scaling. Native preserves panel detail; scaling changes desktop size. Try a standard HiDPI choice for larger text.
  3. For slow motion or dropouts, lower the resolution and refresh rate. Try H.264 if H.265 behaves poorly, and compare a Direct USB connection if available.
  1. For a blank image, unlock the PC and close any administrator prompt; Decky pauses while Windows shows them. Then check the screen chosen under Mirror which screen.
  2. For small or blurry text, check Resolution on the device and Maximum resolution in Decky’s Settings → Devices. For larger text, raise Scale for the Decky display in Windows display settings.
  3. For slow motion or dropouts, lower the resolution and refresh rate. Try H.264 if H.265 behaves poorly, and compare a Direct USB connection if available.

What to know

Change one option at a time and repeat the same action. Supersampling adds rendering work; a maximum refresh-rate setting does not guarantee that rate. A misplaced window may be on another desktop rather than missing.

Change one option at a time and repeat the same action. A maximum refresh-rate setting does not guarantee that rate. A misplaced window may be on another display rather than missing.

If it does not work

Check Screens and any spare desktop previews for missing windows. If the fault remains, send the chosen mode, resolution, refresh rate, codec, connection type and an example of what triggers it to support.

Check Windows’ display settings and any spare desktop’s window for missing windows. If the fault remains, send the chosen mode, resolution, refresh rate, codec, connection type and an example of what triggers it to support.