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I have a Raspberry Pi 4 (4GB) that works fine graphically when I remote desktop into it, as soon below enter image description here

However, when I open Firefox or Chromium, I get distorted graphics. enter image description here

Additionally, when I use my Raspberry Pi to Chromecast a video to my smart TV using VLC, the video occasionally gets slightly distorted until a sufficiently different graphical image updates the screen in the stream (as to update all the pixels).

What might be causing these graphical issues?

Milliways
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Manuel Guillen
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1 Answers1

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This worked for me on several Pi4's I have deployed with bookworm:

  1. Add the xrdp user to the ssl-cert group: $ sudo adduser xrdp ssl-cert

  2. Modify the /etc/X11/xrdp/xorg.conf file and change the 'Option DRM Device' line to:

Option "DRMDevice" "" (that's a space, and two double-quotes).

Carl Swanson
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