Alternative OS on Lenovo Duet 11M889

Hi, I’m trying to run something else than stock chromeos on Duet.
End goal is to get real linux distro running but I couldn’t find any info about it so to get started I am trying with chromiumos.
I built chromiumos and flashed it to sdcard. I tried to boot the Duet with external storage but it seems, it’s just stuck, it doesn’t start the booting.

On Duet, I enabled USB boot and disabled image verification.

For chromiumos, the code name is “geralt”, it doesn’t build because libcamera depends on some binary package from mediatek that’s not there. ChromiumOS has already bug about it.
So I built the image with arm64-generic.

I guess it should still boot or just be dark if GPU drivers are missing?

Is there some other protection that needs to be disabled or some way to get logs on if it even tries to boot?

I have no clue how well this SoC is supported in mainline linux, but you could maybe try postmarketOS. You’ll likely have to manually enable the drivers for your SoC, if they even exist.

Hmm at least IdeaPad Duet Chromebook (google-krane) with mediatek is supported.
But the CPU in duet 11 (MT8188) is not listed as supported Category:MediaTek - postmarketOS Wiki but 8186 is, maybe they are close enough.

I take a look into booting aftermarketOS.

Each SoC needs drivers for clocks, pinctrl, etc. Some drivers like emmc and display are shared across the mediatek SoCs. So assuming the core SoC drivers are supported, it should at least boot.