@mitu
thanks a lot for that hint! I've checked the issues, but didn't notice this one.
For anyone interested/impatient, appending the following works for now:

videodriver kmsdrm

to

/opt/retropie/configs/mame/mame.ini

Just remember to remove it when it has been implemented, as mentioned in the pull request above.

There don't seem to be any other references to fbturbo or Allwinner in the remaining configuration.

Then I don't understand from where the fbturbo configuration is referenced.

Can you check if the file still exists after you remove the xserver-xorg-video-fbturb package ? If so, remove it and see if - after rebooting - you still get the error.

Thanks @mitu!

I did these tests with just the default RetroPie 4.7.1, though I did sudo apt update; sudo apt upgrade to get all the latest packages.

Let me know if this information helps:

pi@retropie:~$ uname -a Linux retropie 5.4.72-v7l+ #1356 SMP Thu Oct 22 13:57:51 BST 2020 armv7l GNU/Linux pi@retropie:~$ lsb_release --all No LSB modules are available. Distributor ID: Raspbian Description: Raspbian GNU/Linux 10 (buster) Release: 10 Codename: buster

- George

Just a quick update. The Steamlink script module was a great help in both the minimal window manager as well as installing Ports.

Thank you! My questions have been answered.

- George

wonderful, i'll look into it, thanks!