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Anroid Q HDMI Not Working - <strong>dragonboard</strong> 820c - 96Boards Forum

Anroid Q HDMI Not Working


I’ve been trying to put my DB820c to work with Android Q for the last couple of days, the build works fine, the board/Android bootup perfectly HOWEVER the HDMI video isn’t being shown in any of the monitors I’ve tried.

There’s no issue with the hardware, since the video works with linaro.
Also Android recognize the hdmi output normally, by reading kernel modules you can see that the HDMI is enabled.

db820c:/ #  cat /sys/class/drm/card0-HDMI-A-1/enabled
db820c:/ # cat sys/class/drm/card0-HDMI-A-1/status

By looking at Android native logs I could see that the SurfaceFlinger is OK, the hardware is OK however the HWComposer seems to be buggy:

Line 678: 01-01 00:38:12.234  2775  2775 E HWComposer: presentAndGetReleaseFences: present failed     	    
for display 0: BadParameter (4)
Line 682: 01-01 00:38:12.246  2769  2822 E hwc-drm-display-compositor: Commit test failed for display 0,

Does anyone has the same issue? Or can at least help me out with this? =)

Thanks a lot!