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I just received a new Raspberry Pi 4 4GB version. From the time of the first boot, I have colorful pixels showing up in different places on the screen. I'm using an FHD 1920x1080 screen and I have tried both of the HDMIs on the pi. I'm using a microHDMI to HDMI converter cable. The HDMI connector that is the closest to the headphone jack works best. I've also tried setting different amounts of RAM on the GPU, but nothing works. At the moment I set it on 512MB. I tried editing the config.txt but it doesn't help. I'm using the official USB-C power supply. I would be thankful for any help.

  • I assume your using Raspbian was it installed with Noobs or flashed directly to sd card? I recommend the latter. – CoderMike Apr 23 at 10:02
  • I have Raspbian Buster flashed directly to a microSD card. – vyPal Apr 23 at 10:04
  • What power supply? – CoderMike Apr 23 at 10:12
  • The official USB-C power supply – vyPal Apr 23 at 10:15
  • What is the resolution of your screen? Hdmi socket next to power should be used? Is correct input selected on tv? Add all this info to your question. – CoderMike Apr 23 at 14:59

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