omnios-build VS chromium_os-raspberry_pi

key features at OmniOS Community Edition

OS Challenge: Try out an Illumos (OpenSolaris) image in a VM (there are Solaris kernel options available in Proxmox). If you want something fun, install OmniOS and create a Linux zone on it. So cool to run Linux on Solaris. https://omnios.org/

While UTM is much better at resource usage, it's not perfect. Virtualbox seems to emulate more of a system instead of passing it through to the hypervisor and so is better for running more unusual OSes. I have two VMs there running Illumos which I have yet to figure out how to boot in UTM. A problem that I think is related to UTM's greater use of the hypervisor is that you can't suspend and resume VMs that use it instead of being emulated, so I've still got a few VMs hanging around in Virtualbox which spend most of their time suspended. Finally, what stops me from using UTM at work is that you can't use it as a Vagrant provider. This is incredibly annoying, as the lack of a decent virtualization application makes the otherwise very nice M1 Macs nothing more than pretty toys. I expect that this glaring lack will be fixed within the next couple of years.

Can anyone recommend a good place to start learning OmniOS? Coming from Debain world. Other than the documentation on omnios.org, I only found a few blog posts here and there...

OpenIndiana is pretty neat. It has quite a few cool features like Zones, DTrace and Crossbow. ZFS is another big feature but you have already said that you don't really care about that. Hardware support is kinda lacking, but improving. Also it's rolling release so if you're like me and don't like that, OmniOS might be a better option; it's another illumos based OS.

You could also try installing FydeOS or ChromiumOS on your RP 400, either of which should allow you to run android apps natively. https://github.com/FydeOS/chromium_os-raspberry_pi/releases

Chromium OS works pretty well on my (overclocked) Raspberry Pi 3b, albeit quite a bit laggy. It should work much better with the Raspberry Pi 4b (with 2Gb+), although I think Ubuntu (or Pop!_OS) would be a better option. See https://github.com/FydeOS/chromium_os-raspberry_pi.

Not official but I run this. Works perfectly

You could try Chromium OS ( https://github.com/FydeOS/chromium_os-raspberry_pi/releases ), it works well on my Pi 4 4G. I usually run Raspberry Pi OS (currently bullseye 32 bit) and can stream YouTube well at 720p. It breaks up and stutters badly at 1080p.

Hi , as you can see and test , there is support for VP9 codec in Chromium OS build for raspberry pi : `Optimised hardware-accelerated VP8/VP9 video stream decoding, you should now have a smoother YouTube video (supports 1080p@30) playback with much lower CPU usage`

Fix: https://github.com/FydeOS/chromium_os-raspberry_pi/issues/111