January 6, 20242 yr does displayport over usb-c dock work for you? It doesn't for me neither on 5.15 nor on 6.1.
December 7, 2025Dec 7 Hello storz, I wonder if you ever managed to get this to work. I used to have this working, but not anymore, and I wonder if I can make it work again. I have an Anker A8312 USB-C to HDMI adapter (which, like all similar adapters, really does DisplayPort in Alt mode over USB-C, and from there converts to HDMI). I previously used this on my PBP with Armbian Focal, and it worked fine just so long as I ran GNOME on X.org, as opposed to Wayland. I was able to connect an external monitor via an HDMI cable, it showed up in the GNOME display settings, and I was able to use it as one would expect. I unfortunately have a hard time finding out the exact kernel version I used at the time, but I believe it was a 4.9 rockchip kernel. I recently reinstalled my PBP using Armbian Noble and apparently there's a kernel regression that causes the adapter to not be recognised anymore. On a 6.1 kernel (which is what shipped with Armbian Noble as it came out), the device is not recognised at all. On a 6.12 kernel (currently available via updates, at the time of writing), the device does show up in lsusb, but only as a "billboard device" which means that the device wasn't correctly switched into DP Alt mode and is thus unusable for connecting a screen. I am still on GNOME on X.org, I still use the same adapter, and I still connect to the same monitor with the same cable as before. So with all other variables being identical, I do strongly suspect this to be a kernel or perhaps a firmware issue. Perhaps you (or someone else) have any pointers that might help me move towards getting this working again. I'd be most grateful for those. Thanks! Cheers, Florian
December 8, 2025Dec 8 not sure what the current state of this is, but i think megi always had a hack to make it working in their trees - maybe just try to apply the corresponding patch from the last commits of https://codeberg.org/megi/linux/commits/branch/pbp-6.18 to your kernel build and see if it works? good luck and best wishes - hexdump
December 9, 2025Dec 9 8 hours ago, hexdump said: https://codeberg.org/megi/linux/commits/branch/pbp-6.18 If that doesn't do it, try the main integration branch which for once combines all branches and for the other is actually meant to be used by megi iirc:https://codeberg.org/megi/linux/commits/branch/orange-pi-6.18
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