Cristian Apas

@c0rnelius: Thanks for the info, I'll fiddle with the GPU in the meantime. 
 
@Cristian Apas: that hack above is necessary if you use the Xunlong Ubuntu userspace. They have replaced every hint on the OEM, which includes the GPU driver name. Hack not necessary if we simply use the Spacemit Bianbu Ubuntu userspace.
 
I hacked an image together with this (see my site https://privat-in.de goto Downloads). It has a glmark2 score of 424 (not very fast). This is not for everybody. I compiled a standard OrangepiRv2 Armbian image with a legacy kernel and put in a Bianbu 3.01 minimal userspace as root. Details from my notes:
# Image creation starts with Armbian-Orangepirv2_trixie_legacy_6.6.99_minimal.img Root from https://archive.spacemit.com/image/k1/version/bianbu/v3.0.1/ -> minimal.img -- Default LANG=zh_CN.UTF-8, change: dpkg-reconfigure locales -> en_US.UTF-8 Copy from Armbian: /etc/netplan/10-dhcp-all-interfaces.yaml, /etc/fstab, /boot/*, /lib/modules/*, /etc/modprobe.d/orangepirv2.conf /etc/modules-load.d/orangepirv2.conf Purge spacemit-flash-dtbs (and thereby remove linux-image-6.6.63*) Uploaded this image to https://privat-in.de/ (Downloads)  
First steps after flashing
UART login as root / bianbu
apt-get install parted
parted /dev/mmcblk0 (or /dev/nvme0n1): resizepart 1 100%
resize2fs /dev/mmcblk0p1 (or /dev/nvme0n1p1)
apt-get install gnome-core glmark2-es2-wayland
adduser a-new-user
adduser a-new-user sudo
Reboot and login
Click on Terminal, run glmark2-es2-wayland
 
Notes: other Spacemit K1 boards can run Bianbu without any changes, this is exclusively for OpiRV2. Expect oopses at every corner...
 
You can install cinnamon-core and use that. Make sure to run cinnamon under gdm3 b/c starting via lightdm does not work well (e.g. menu open freezes). Also, KDE plasma only with screen artifacts and xfce4-wayland simply exits immediately. No other wayland DE tested...

Good news: this is merged in Armbian main now, many thanks to  @c0rnelius and @Igor for reviewing this. So no more need to grab my fork, just clone Armbian/build:main. I was able to build and quick-test orangepirv2/edge-kernel and this looks fine including Wifi. 
 
There are of course unsolved quirks currently. With edge-kernel, Wayland does not work, we need to use Xorg. And with the current bcmdhd Wifi driver, AP mode is not possible. This is caused by outdated file in armbian-firmware for bcmdhd and may be the same on OrangePi5. There is a mechanism to load a different fw_bcm43456c5_ag.bin (the one downloadable from github/xunlong seems to work).
 
LG // Sven-Ola