06-06-2021, 12:27 PM
(06-05-2021, 01:45 PM)moonwalkers Wrote: There is a thread for official Debian support, but it's not PBP-specific, so I thought it would be appropriate to create one here.
Since linux-image-5.10.0-7-arm64, the linux-image-arm64 meta-package in Debian Sid/Unstable now supports PBP. That corresponds to the kernel version 5.10.38. Latest version is actually 5.10.40. By now linux-image-5.10.0-7-arm64 should've made its way into Debian Bullseye/Testing, which should become the next stable some time this year. I've been running it for the past almost two weeks, and below are my findings so far, primarily compared to the 5.8.5 kernel build using xmixahx's pbp-tools. Since U-boot have an effect on some of the functionality, full disclosure - I'm using BSP u-boot release 2.0 by mrfixit (https://github.com/mrfixit2001/updates_r...filesystem). I have not yet tried other versions of u-boot, neither any of the custom builds nor u-boot-rockchip package from Debian repos that since some time ago claims to support PBP.
Did not test:
* Bluetooth
What works:
* WiFi
* Built-in display at native resolution
* 3D acceleration
* Webcam
* Built-in microphone
* Sound (built-in speakers and headphones, I'm still using custom acpid event to switch output)
What doesn't work:
* Deep sleep (regression compared to xmixahx's 5.8.5)
What works differently:
* Debian's kernel defaults to schedutil scaling governor.
* big cores are now limited to 1.8GHz instead of 2.0GHz, little cores still run at up to 1.416GHz. This could potentially explain why with Debian kernel I have not yet been running into any freezes outside of my attempts at deep sleep, unlike with xmixahx's 5.8.5 kernel.
Hello, I've been struggling to get Debian testing or unstable displaying something on the screen with a custom install. Everything boots OK, but X won't start or any display manager (GDM etc). I'm booting with u-boot+uefi though, maybe that's the issue? I don't know how to do a custom /boot for non-UEFI though (I think there's a config.txt file I need? grub?). UEFI was easier to get going with. Any chance you could send me the contents of your /boot directory or instructions on how you populated it? maybe a fdisk dump too?
