Tinker Board 3N Android 12 V1.0.19 - HDMI support

[Dominik 0]

I want to connect Tinker Board 3N with a DWIN HDW156-001L monitor using "Tinker Board 3N Android 12 V1.0.19" OS but it doesn't work. I've checked if it's the monitors fault, but it works fine with PC (using the same HDMI cable). Other monitors work properly with the Tinker Board. There's a problem only when Tinker Board and DWIN are connected. I've tried flashing OS on the chip (instead of using SD card), flashing previous versions of the Android for Tinker Board. I've checked if Raspberry Pi 4 with Emteria's Android 14 would have the same issue but it worked properly. Is there a way to identify and fix the problem?

[tooz 53]

hello @Dominik, 

 

12 hours ago, Dominik said:

I want to connect Tinker Board 3N with a DWIN HDW156-001L monitor using "Tinker Board 3N Android 12 V1.0.19" OS but it doesn't work

1. did the panel: go completely blank or show 'no signal'?

2. what's the powering sequence? is it panel ->tinker board 3n, or the other way round? was the hdmi cable connected between the panel and tinker board 3n the whole time?

3. could you collect logs via adb so we can have a little big more information for debugging, to collect logs using adb commands: 

./adb root
./adb shell dmesg > dmesg.log
./adb shell "echo 0x0c > /sys/module/drm/parameters/debug"
./adb shell dmesg -C
    ##please unplug and re-plug the hdmi cable##
./adb shell dmesg > dmesg_drm.log

 

[Dominik 0]

The problem was with the monitor. After trying this out on a newer version everything is fine.