I built armbian from the main branch for my tablet based on Allwinner A33 and the topic:
Used q88_a33_tablet_1024x600_defconfig and tried q8_a33_tablet_1024x600_defconfig
the image was built successfully, at startup I see the console of u-boot, and can use it bu OTG, but only before message the kernel starting... and then after kernel starting it will a black screen as i think the video mode or something else is configured incorrectly, I checked the boot kernel logs, the kernel starts successfully, there are no any errors during start, apparently the problem is only in the video output on my tablet.
I ask for help, help me understand what the problem is and figure it out, this is very important to me
P.S. Author from topic above, say that need to set , because boot screen will be black, but this case is not helped for me:
echo blacklist pwm_bl>/etc/modprobe.d/pwm.conf
P.S.S Also, i tried to built Armbian 23.02, the same as code in main branch