In reply to @alex:tunstall.xyz

I'm currently compiling with a few patches applied to try to fix the compilation problems without disabling DRM, since I'd really like to get working HDMI on my VF2.

I'll share the configuration if I'm able to get it working. Given the similarities between the two SBCs (and their respective Linux fork), it might work for the Star64 too.

In reply to @alex:tunstall.xyz
I've gotten Linux 5.15 (VF2 dev branch) to compile but it doesn't boot, doesn't log to journalctl, and doesn't output to HDMI, so I've folded and ordered the necessary hardware to debug over serial.

In reply to @fgaz:matrix.org
I have a serial adapter, could you publish your patches so I can try them on the star64?

Sure: https://github.com/AlexandreTunstall/nixos-vf2/tree/linux-devel

This isn't the exact code I'm building (my VF2 configuration files are a bit of a mess), but it should work when built natively or at the very least allow you to build the same kernel.

In reply to @thefossguy:matrix.org
My main machine (x86 computer) is dead so don't have enough resources to CXX but if I could get an image, I can check for the issue...

This should work. https://github.com/AlexandreTunstall/nixos-vf2/releases/tag/broken-v1

If needed, I can spend extra time to build a disk image instead.

In reply to @thefossguy:matrix.org
I don't have a big enough SD Card that can handle more than one generation :(

4GB should be enough, the closure is ~850MiB and misuzu's images are <2GiB.

You can also download/inflate it onto tmpfs if you barely have enough space to import it into the Nix store.

Concerning the VF2 CPU frequency issue on the "upstream" branch: a Starfive employee has responded to say that it'll be fixed once the JH7110 PLL patchset is accepted upstream.

If anyone doesn't want to wait for the vendor's fix, the issue is that the PLL0 clock runs at 1GHz instead of 1.5GHz. I'd write a patch for it myself, but I can't figure out what change needs to be made, so good luck to anyone willing to try. If you do find a fix, please share it in the GitHub issue.

https://github.com/starfive-tech/VisionFive2/issues/55#issuecomment-1631996288

In reply to @alex:tunstall.xyz

This should work. https://github.com/AlexandreTunstall/nixos-vf2/releases/tag/broken-v1

If needed, I can spend extra time to build a disk image instead.

I see the extracted .nar file but don't know how to import it... I get the following error:

$ nix-store --import ./new-nix.nar
error: no arguments expected
Try 'nix-store --help' for more information.

nix-store --import < ./new-nix.nar

(This command is also in man nix-store)