A Raspberry Pi3 B+ was outfitted with: ubuntu-mate-18.04.2-beta1-desktop-armhf+raspi-ext4.img which indicates that the B+ is the recommended hardware. That being said, at bootup, the rainbow screen (indicating an incompatible OS) is briefly observed (~8 seconds):

enter image description here

then displays an error message:

[2.568964] Error: Driver 'sdhost-bcm2835' is already registered, aborting...

proceeds to the mate desktop

  • What must be done to prevent the rainbow screen + error message?
  • If the OS was truly incompatible, should I expect that nothing should work?
  • the rainbow screen is a GPU test that appears at every boot ... how long is it staying visible? – jsotola Jun 6 at 1:38
  • @jsotola Approximately 8 seconds. I added an observed error message to the OP – gatorback Jun 6 at 1:47
  • This is beta software! You could try asking on ubuntu-mate.community/t/… This DOES NOT use the standard Pi kernel/firmware. – Milliways Jun 6 at 3:52

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