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I flashed the latest Retropie image (4.4) and it boots with a resolution of 640x480 when connected over HDMI to my 4k TV.

I used the correct Retropie image for my Pi 3. I confirmed the screen resolution using tvservice -s.

How can I get it to run at 1080p?

Morgoth
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1 Answers1

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You can force a resolution by using raspi-config as follows:

  1. sudo raspi-config
  2. Select Advanced Options
  3. Select Resolution
  4. Select DMT Mode 82 1920x1080 60Hz 16:9

You can also do this manually by editing /boot/config.txt and uncommenting and changing the following lines:

hdmi_force_hotplug=1
hdmi_group=2
hdmi_mode=82
hdmi_drive=2
Morgoth
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