Hello all!

 

I have a radxa rock 5b (8GB, not the plus version) and am running armbian (bookworm) on it. The kernel version (uname -r) reports as 6.12.32-current-rockchip64. By and large almost everything seems to be working - video playback in VLC is fine, 3d acceleration is working (I get around 58-60fps in the game 'torcs' as an example). The only thing I can't seem to get working (and can't find much about it) is the hdmi input.

 

I see some five devices listed in dev (from /dev/video0 to /dev/video4) although none of these seem to relate to the hdmi input.

 

Does the hdmi input work on the 5b under armbian at all?

 

thanks

 

ljones

Use `vendor` kernel and enable hdmirx overlay.

Ok thanks there. Mind you their kernel is the older 5.x branch, so I'm kinda in two minds about that.

 

ljones

vendor branch is based on latest rockchip bsp which is 6.1.115 atm. You can use armbian-config to switch.

I ran into the same problem when setting up a retroarch based gaming system with Armbian Debian Trixie. I wanted to use my Dualsense 4 controller with it but couldn't get it to work on Vendor or Current. I later realized that you need to enable `LEDS_CLASS_MULTICOLOR` and `HID_PLAYSTATION` for it to work with the controller. This was only present from the kernel 6.2 and involved compiling the kernel after enabling those flags. I got that working in current and edge but I lost HDMI-CEC. The edge kernel at the time is 6.18.0 for rock 5b. Is there any way forward to get both functionalities working? I see that HDMI-CEC is listed as `n/a` under rock 5b here: https://gitlab.collabora.com/hardware-enablement/rockchip-3588/notes-for-rockchip-3588/-/blob/main/mainline-status.md. 

If you have patience, CEC may work at some point with mainline kernel. There is not fast solution.