I have been trying to build a new kernel to support a 1080p screen (https://www.thing-printer.com/product/manga-screen/) with Udoo Quad and I just get it to compile. Can someone who knows what they are doing create an image for 1080p HDMI?
What problems/compile errors do you have? Where in the procedure to compile Android 6 for Quad does the problem.show?
Honestly, I am just not familiar with building Linux in general, how to make kernels and modify the image. I followed the instructions at the link below after personalizing the kernel configuration to include the Vivante GPU. I'm not sure if that's all that's required to get 1080p. https://www.udoo.org/docs/Advanced_Topics/Compile_Linux_Kernel.html I then get a kernel, but I don't know how to get that into the SD card boot image from my virtual machine. The instructions mention a BOOT_PARTITION and ROOT_PARTITION, but I don't know where either of those are. The SD card is visible in the virtual machine, but there no folder called boot or root.
I think you better use the instructions for Android, it also includes a section about the kernel. https://www.udoo.org/docs/Advanced_Topics/Compile_Android_From_Source.html
I previously tried building all of Android using those instructions, but the virtual machine locked up while setting up the environment. Not sure what happened exactly...