ToShuk Posted May 13, 2023 Share Posted May 13, 2023 (edited) 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 Edited May 13, 2023 by ToShuk 0 Quote Link to comment Share on other sites More sharing options...
ToShuk Posted May 13, 2023 Author Share Posted May 13, 2023 To discussion: I found this https://docs.armbian.com/Hardware_Allwinner/#how-to-reconfigure-video-output Can it help me to fix my issue ? after changing boot.cmd need to compile it ? 0 Quote Link to comment Share on other sites More sharing options...
ToShuk Posted May 14, 2023 Author Share Posted May 14, 2023 (edited) Added this: setenv video-mode sunxi:1024x600-24@60,monitor=lcd setenv load_addr "0x45000000" setenv overlay_error "false" # default values setenv verbosity "7" setenv console "both" setenv disp_mem_reserves "off" setenv disp_mode "1024x600p60" setenv rootfstype "ext4" setenv docker_optimizations "on" setenv bootlogo "false" setenv devnum "0" setenv rootdev "/dev/mmcblk${devnum}p1" setenv earlycon "off" setenv video-mode sunxi:1024x600-24@60,monitor=lcd to boot.cmd , compiled boot.scr but nothing Any ideas? armbian-ramlog.log boot.log kern.log armbian-hardware-monitor.log syslog user.log Edited May 14, 2023 by ToShuk 0 Quote Link to comment Share on other sites More sharing options...
ToShuk Posted May 15, 2023 Author Share Posted May 15, 2023 can it be an issue with dtb file? 0 Quote Link to comment Share on other sites More sharing options...
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