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HDMI->DVI no output on monitor




I'm having trouble with hdmi display and armbian focal on rock64.

All works with simple office hdmi displays but fails with an open frame display connected using hdmi->dvi cable.

Even the boot messages do not display and the display goes into power saving mode.


Here are some of the outputs:

rock64@rock64:~$ cat /sys/class/drm/card0/card0-HDMI-A-1/status
rock64@rock64:~$ cat /sys/class/drm/card0-HDMI-A-1/status


rock64@rock64:~$  dmesg | grep hdmi
[    4.484419] dwhdmi-rockchip ff3c0000.hdmi: Detected HDMI TX controller v2.11a with HDCP (inno_dw_hdmi_phy2)
[    4.485826] dwhdmi-rockchip ff3c0000.hdmi: registered DesignWare HDMI I2C bus driver
[    4.487156] rockchip-drm display-subsystem: bound ff3c0000.hdmi (ops dw_hdmi_rockchip_ops [rockchipdrm])
[   10.354029] rc rc1: dw_hdmi as /devices/platform/ff3c0000.hdmi/rc/rc1
[   10.354226] input: dw_hdmi as /devices/platform/ff3c0000.hdmi/rc/rc1/input5
[   10.973383] hdmi-audio-codec hdmi-audio-codec.4.auto: ASoC: error at snd_soc_component_of_xlate_dai_id on hdmi-audio-codec.4.auto: -22
rock64@rock64:~$  lsmod | grep hdmi
snd_soc_hdmi_codec     20480  1
dw_hdmi_cec            16384  0
dw_hdmi_i2s_audio      16384  0
snd_soc_core          237568  7 snd_soc_spdif_tx,snd_soc_hdmi_codec,snd_soc_rockchip_spdif,snd_soc_audio_graph_card,snd_soc_rk3328,snd_soc_simple_card_utils,snd_soc_rockchip_i2s
snd_pcm               118784  3 snd_soc_hdmi_codec,snd_soc_core,snd_pcm_dmaengine
snd                    90112  4 snd_soc_hdmi_codec,snd_timer,snd_soc_core,snd_pcm
dw_hdmi                53248  2 dw_hdmi_i2s_audio,rockchipdrm
drm_kms_helper        245760  4 dw_mipi_dsi,rockchipdrm,dw_hdmi,analogix_dp
cec                    73728  3 drm_kms_helper,dw_hdmi_cec,dw_hdmi
drm                   573440  8 gpu_sched,drm_kms_helper,dw_mipi_dsi,lima,rockchipdrm,dw_hdmi,analogix_dp
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