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Sender	Message	Time
9 Jul 2023
Pratham Patel	In reply to @alex:tunstall.xyz FWIW I tried mainline too but it didn't boot and I don't have the hardware to debug failed boots. Yeah, the mainline kernel doesn't know where the SD card is. I checked it via UART and it panicked at a recovery shell with a missing rootfs. Dug deeper to find out that the upstream DTB doesn't yet have an "entry" for the eMMC node.	11:18:21
Pratham Patel	Vendor kernel has this node: https://github.com/starfive-tech/linux/blob/b4920a1a3dd328124c61b07e8a6ab48c67881037/arch/riscv/boot/dts/starfive/jh7110-visionfive-v2.dtsi#L23	11:21:02
Pratham Patel	Meanwhile upstream doesn't yet have it: https://github.com/torvalds/linux/blob/e2c510d6d630fe6593a0cf87531913b4b08ebeb1/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi#L18	11:21:33
Alex	For microSD, mmc1 is the correct node btw. I don't think mmc0 is used in the VF2, but it seems like it's for eMMC. `[nixos@nixos:/etc/nixos]$ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINTS mmcblk1 179:0 0 232.2G 0 disk ├─mmcblk1p1 179:1 0 256M 0 part /boot └─mmcblk1p2 179:2 0 231.9G 0 part /nix/store /`	11:22:27
Pratham Patel	Yes, but both are missing from upstream ;)	11:23:22
Alex	Oh dear, no ethernet in mainline either	11:23:29
Pratham Patel	:')	11:23:47
10 Jul 2023
trofi	artemis: RE your past problems with `libtool` cross-compiling on Gentoo. I think I found the issue: if you run `nix` itself in a containerized environment `nix` silently falls back into the mode without a sandbox enabled (due to a `sandbox-fallback = true`) and happily runs unsandboxed builds in `/tmp`. ALl the bianries in `/usr/bin` and whatnot are available to the builds and this impurity contaminates the environemtn with `/usr/lib` library search paths breaks the builds. The easy way to check it is to set `sandbox-fallback = false` in `/etc/nix/nix.conf`, restart `nix-daemon` and try to build something. If it fails that means you have been using unsandboxed builds.	08:32:39
trofi	I disabled sandbox fallback in the overlay with https://github.com/trofi/nix-guix-gentoo/commit/88050fcf0f3a11a7a6763494eda580b707be1267 and added a `README` entry to diagnose it: https://github.com/trofi/nix-guix-gentoo/commit/8109131192dc340e314d9e41159b176bfb5b82c8	08:33:40
trofi	What environment did you use to run `nix`? Real machine, a VM or some container?	08:34:20
artemis	In reply to @trofi:matrix.org What environment did you use to run `nix`? Real machine, a VM or some container? real machine, no VMs, no containers	08:56:22
artemis	also my /etc/nix/nix.conf already has `sandbox-fallback = false`	08:58:48
artemis	* also my /etc/nix/nix.conf already has `sandbox-fallback = false` without issue	08:59:01
artemis	* also my /etc/nix/nix.conf already has `sandbox-fallback = false` without issue. i dont know when i added that but it's been there	08:59:53
	@achnazoor:matrix.org joined the room.	09:05:21
	avnik joined the room.	09:39:14
trofi	Must be something else then (or a poisoned local cache when was built without a sandbox, before nix.conf tweaks)	09:46:47
artemis	how coud i clean local cache to ttest that theory	10:41:41
trofi	Good question. I would "uninstall" everything by cleaning all gc roots in /nix/var/nix/gcroots and run nix-xollect-garbage -d.	10:56:09
trofi	* Good question. I would "uninstall" everything by cleaning all gc roots in /nix/var/nix/gcroots and run nix-collect-garbage -d.	10:56:33
trofi	Alternatively you can `nix-build --check` all paths in the problematic closure. But it will require checking for false positives manually.	11:00:46
artemis	i will do the first option	11:25:01
11 Jul 2023
Alex	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. I've gotten Linux 5.15 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.	10:41:37
Alex	* 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.	10:42:00
fgaz	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. I have a serial adapter, could you publish your patches so I can try them on the star64?	17:43:14
12 Jul 2023
Alex	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.	04:34:43
Pratham Patel	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...	06:58:27
Alex	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... I might be able to generate a NAR of the closure.	07:15:53
Alex	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.	07:39:40
Alex	By the way, if you don't already have NixOS on the VF2, you can get a bootable image from here: https://github.com/misuzu/nixos-vf2/releases (set boot mode to flash).	07:45:19

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