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After Firefly-RK3399_xubuntu16.04_20180910.img there is no video on HDMI

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Posted at 12/11/2018 14:37:23     
Dear All,

I upgrade the system by using Firefly-RK3399_xubuntu16.04_20180910.img and then dont see any video from HDMI source. When I check the log file during system power on, i saw this message "[drm:dw_hdmi_rockchip_set_property] *ERROR* failed to set rockchip hdmi connector property". How can i solve it.

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Posted at 12/11/2018 14:45:35     
The related messages;
root@firefly:/sys/module/drm/parameters# echo 0x1f debug
0x1f debug
root@firefly:/sys/module/drm/parameters# dmesg | grep drm
[    0.893561] rk-vcodec ff650000.vpu_service: allocator is drm
[    0.899108] rk-vcodec ff660000.rkvdec: allocator is drm
[    0.918759] [drm] Initialized drm 1.1.0 20060810
[    0.922675] [drm] Rockchip DRM driver version: v1.0.1
[    1.379658] rockchip-drm display-subsystem: defer getting devfreq
[    1.381300] rockchip-drm display-subsystem: bound ff900000.vop (ops 0xffffff8008ccd588)
[    1.382804] rockchip-drm display-subsystem: bound ff8f0000.vop (ops 0xffffff8008ccd588)
[    1.388333] rockchip-drm display-subsystem: bound ff940000.hdmi (ops 0xffffff8008cc4158)
[    1.389576] rockchip-drm display-subsystem: bound fec00000.dp (ops 0xffffff8008cc50b0)
[    1.390820] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    1.390823] [drm] No driver support for vblank timestamp query.
[    1.645634] rockchip-drm display-subsystem: can't not find any loader display
[    1.646353] rockchip-drm display-subsystem: failed to show loader logo
[    1.647292] Freeing drm_logo memory: 488K
[    1.915466] rockchip-vop ff900000.vop: [drm:vop_crtc_enable] Update mode to 1920x1080p50, type: 11
[    2.141708] rockchip-drm display-subsystem: fb0:  frame buffer device
[    4.395516] cdn-dp fec00000.dp: [drm:cdn_dp_pd_event_work] Not connected. Disabling cdn
[    6.287269] [drm:dw_hdmi_rockchip_set_property] *ERROR* failed to set rockchip hdmi connector property
[    6.288120] [drm:dw_hdmi_rockchip_set_property] *ERROR* failed to set rockchip hdmi connector property
[    6.288959] [drm:dw_hdmi_rockchip_set_property] *ERROR* failed to set rockchip hdmi connector property
[    6.289802] [drm:dw_hdmi_rockchip_set_property] *ERROR* failed to set rockchip hdmi connector property
[    6.290633] [drm:dw_hdmi_rockchip_set_property] *ERROR* failed to set rockchip hdmi connector property
[    6.291452] [drm:dw_hdmi_rockchip_set_property] *ERROR* failed to set rockchip hdmi connector property
[  180.142630] rockchip-vop ff900000.vop: [drm:vop_crtc_enable] Update mode to 1920x1080p0, type: 11
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Posted at 12/11/2018 17:13:41     
First, try to plug out and in the HDMI cable, to see if there's plug event in kernel message.

Or try another display, to see if the same thing happens.
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