gregordinary

The armhf archive size is 275 GB: https://www.debian.org/mirror/size It'll need a bit more coordination to confirm we have resources, but I'd be willing to contribute some monthly amount for hosting...

Not sure if this will be the fix, but looks like 5.4 may be getting better HDMI audio support for the rk3288: [Add HDMI jack support on RK3288](https://lkml.org/lkml/2019/9/19/431)

On the most recent PrawnOS release, output of `aplay -l` is: ``` **** List of PLAYBACK Hardware Devices **** card 0: VEYRONI2S [VEYRON-I2S], device 0: Audio HiFi-0 [Audio HiFi-0] Subdevices:...

Revisiting this, thank you for the guidance @kapouer 1. Built PrawnOS from source, since it's now using 5.15.6, I didn't apply the patch from 5.5 mentioned in my previous comment....

Unfortunately same behavior with the updated .conf file. I came across that .conf while troubleshooting the [other sound-related issue](https://github.com/SolidHal/PrawnOS/issues/305#issuecomment-1287961947). Not sure if it would behave any differently under different kernels...

Winged it and tried the patches from the Armbian thread and the display settings now show options for 3840x2160 and 2560x1440. 1440p works but I cannot get 4k to work...

Yeah, seems to be some type of adapter. Was just looking into it and found this downconverter: https://www.amazon.com/dp/B06XC7VLFV/ Though ultimately the rk3288 has HDMI 2.0 and should be able to...

@gdallasdye When I first attempted, I just applied all the patches as a "Why not just try it?" type approach. Figured if it worked I'd take a deeper dive and...

@Miouyouyou - I tried both. The original patch set worked, through 1440x2160. The 4k resolution got a blank screen, and I didn't have an adapter available at the time to...

@Miouyouyou - I tried another build, oddly, this time I'm only getting options for resolutions up to 1920x1080 for the external display. Could very likely be something on my side....