Amlogic a311d and HDR10+ playback problem

[szlww]

Hi,I have an Amlogic A311D Android device with the original firmware being Android 9.0. I use coreelec 20.2 to play 4K HDR10+videos, but the screen is black with only sound, however both the image and sound were normal when I played the same video using coreelec 19.4_RC1(or other older versions).This is so confusing for me,any suggestions?

mediainfo: http://ix.io/4Lsz
demo: video_00694_hdr10+.7z - Google Drive
CoreELEC 19.4-RC1 with g12b_s922x_beelink_gt_king.dtb: everything works well,image and sound are normal
dmesg: http://ix.io/4Lsu
kodi.log: http://ix.io/4Lsw

CoreELEC 20.2 with g12b_s922x_beelink_gt_king.dtb: the screen is black with only sound
dmesg: http://ix.io/4Lsx
kodi.log: http://ix.io/4Lsy

CoreELEC 20.2 with Radxa Zero2 dtb: the screen is black with only sound
dmesg: http://ix.io/4Ltd
kodi.log: http://ix.io/4Lte
dispinfo: http://ix.io/4LtF

[Portisch]

g12b_s922x_beelink_gt_king is not A311D.

Try Vim3 or Radxa Zero2 dtb.

[szlww]

coreelec 20.2 with Radxa Zero2 dtb still has the problem. May be kernel issue?
dmesg: http://ix.io/4Ltd
kodi.log: http://ix.io/4Lte

[Portisch]

No,

more your TV does not like the frame rate switching to 1080p59.94hz when you play your h265 video.
You boot in 1080p60hz and when it’s working it might does not like the frame rate frac rate.

Enable only 1080p60hz in white list and try again.

[szlww]

@Portisch

and try again

just set 1080p60hz in white list,but no effect ,HDR10+ playback still black screen with only sound.Why the same device running ce19.4_RC1(kernel 4.9.113) can play normally?

[Portisch]

I have no idea. 4.9 is EOL.
You can try again when new CoreELEC project with 5.15 will be public.
It will support A311D as well.