kxm@kxm:~$ dmesg | tail -n 50
[   67.735904] tegra_nvdisp_handle_pd_enable: Unpowergated Head0 pd
[   67.736458] tegra_nvdisp_handle_pd_enable: Unpowergated Head1 pd
[   67.741522] Parent Clock set for DC plld2
[   67.746604] tegradc 15200000.nvdisplay: hdmi: tmds rate:174500K prod-setting:prod_c_hdmi_111m_223m
[   67.748272] tegradc 15200000.nvdisplay: hdmi: get YCC quant from EDID.
[   67.787311] extcon-disp-state external-connection:disp-state: cable 47 state 1
[   67.787315] Extcon AUX1(HDMI) enable
[   67.788466] tegradc 15200000.nvdisplay: sync windows ret = 250
[   68.117334] tegradc 15200000.nvdisplay: blank - powerdown
[   68.149459] extcon-disp-state external-connection:disp-state: cable 47 state 0
[   68.149462] Extcon AUX1(HDMI) disable
[   68.173088] tegra_nvdisp_handle_pd_disable: Powergated Head1 pd
[   68.174429] tegra_nvdisp_handle_pd_disable: Powergated Head0 pd
[   68.174576] tegradc 15200000.nvdisplay: unblank
[   68.175601] tegra_nvdisp_handle_pd_enable: Unpowergated Head0 pd
[   68.175759] tegra_nvdisp_handle_pd_enable: Unpowergated Head1 pd
[   68.181004] Parent Clock set for DC plld2
[   68.188563] tegradc 15200000.nvdisplay: hdmi: tmds rate:174500K prod-setting:prod_c_hdmi_111m_223m
[   68.190136] tegradc 15200000.nvdisplay: hdmi: get YCC quant from EDID.
[   68.228264] extcon-disp-state external-connection:disp-state: cable 47 state 1
[   68.228283] Extcon AUX1(HDMI) enable
[   68.230326] tegradc 15200000.nvdisplay: sync windows ret = 249
[   68.555591] tegradc 15200000.nvdisplay: blank - powerdown
[   68.590512] extcon-disp-state external-connection:disp-state: cable 47 state 0
[   68.590515] Extcon AUX1(HDMI) disable
[   68.613148] tegra_nvdisp_handle_pd_disable: Powergated Head1 pd
[   68.613948] tegra_nvdisp_handle_pd_disable: Powergated Head0 pd
[   68.614177] tegradc 15200000.nvdisplay: unblank
[   68.616269] tegra_nvdisp_handle_pd_enable: Unpowergated Head0 pd
[   68.616379] tegra_nvdisp_handle_pd_enable: Unpowergated Head1 pd
[   68.621430] Parent Clock set for DC plld2
[   68.626484] tegradc 15200000.nvdisplay: hdmi: tmds rate:174500K prod-setting:prod_c_hdmi_111m_223m
[   68.627902] tegradc 15200000.nvdisplay: hdmi: get YCC quant from EDID.
[   68.631497] tegra-i2c 3190000.i2c: no acknowledge from address 0x50
[   68.637824] extcon-disp-state external-connection:disp-state: cable 47 state 1
[   68.637828] Extcon AUX1(HDMI) enable
[   68.641456] tegradc 15200000.nvdisplay: sync windows ret = 250
[   68.748221] extcon-disp-state external-connection:disp-state: cable 47 state 0
[   68.748227] Extcon AUX1(HDMI) disable
[   68.770556] tegra_nvdisp_handle_pd_disable: Powergated Head1 pd
[   68.771285] tegra_nvdisp_handle_pd_disable: Powergated Head0 pd
[   68.771438] tegradc 15200000.nvdisplay: blank - powerdown
[   68.771716] extcon-disp-state external-connection:disp-state: cable 51 state 0
[   68.771720] Extcon HDMI: HPD disabled
[   68.771742] tegradc 15200000.nvdisplay: hdmi: unplugged
[   68.986293] tegradc 15200000.nvdisplay: blank - powerdown
[   69.287343] tegradc 15200000.nvdisplay: blank - powerdown
[   69.590632] tegradc 15200000.nvdisplay: blank - powerdown
[   69.863000] tegradc 15200000.nvdisplay: blank - powerdown
[   70.155630] tegradc 15200000.nvdisplay: blank - powerdown
kxm@kxm:~$ dmesg | tail -n 50
[   75.032312] tegradc 15200000.nvdisplay: sync windows ret = 249
[   75.153459] extcon-disp-state external-connection:disp-state: cable 47 state 0
[   75.153465] Extcon AUX1(HDMI) disable
[   75.174457] tegra_nvdisp_handle_pd_disable: Powergated Head1 pd
[   75.175037] tegra_nvdisp_handle_pd_disable: Powergated Head0 pd
[   75.175197] tegradc 15200000.nvdisplay: blank - powerdown
[   75.175391] extcon-disp-state external-connection:disp-state: cable 51 state 0
[   75.175395] Extcon HDMI: HPD disabled
[   75.175424] tegradc 15200000.nvdisplay: hdmi: unplugged
[   75.349757] tegradc 15200000.nvdisplay: blank - powerdown
[   75.349774] tegradc 15200000.nvdisplay: unblank
[   75.350504] tegra_nvdisp_handle_pd_enable: Unpowergated Head0 pd
[   75.350612] tegra_nvdisp_handle_pd_enable: Unpowergated Head1 pd
[   75.354999] Parent Clock set for DC plld2
[   75.359089] tegradc 15200000.nvdisplay: hdmi: tmds rate:174500K prod-setting:prod_c_hdmi_111m_223m
[   75.360403] tegradc 15200000.nvdisplay: hdmi: get YCC quant from EDID.
[   75.395088] extcon-disp-state external-connection:disp-state: cable 47 state 1
[   75.395092] Extcon AUX1(HDMI) enable
[   75.401921] tegradc 15200000.nvdisplay: sync windows ret = 248
[   75.402013] extcon-disp-state external-connection:disp-state: cable 51 state 1
[   75.402017] Extcon HDMI: HPD enabled
[   75.402040] tegradc 15200000.nvdisplay: hdmi: plugged
[   75.421789] tegradc 15200000.nvdisplay: blank - powerdown
[   75.454318] extcon-disp-state external-connection:disp-state: cable 47 state 0
[   75.454321] Extcon AUX1(HDMI) disable
[   75.478863] tegra_nvdisp_handle_pd_disable: Powergated Head1 pd
[   75.479445] tegra_nvdisp_handle_pd_disable: Powergated Head0 pd
[   75.479785] tegradc 15200000.nvdisplay: unblank
[   75.481206] tegra_nvdisp_handle_pd_enable: Unpowergated Head0 pd
[   75.481515] tegra_nvdisp_handle_pd_enable: Unpowergated Head1 pd
[   75.486821] Parent Clock set for DC plld2
[   75.490993] tegradc 15200000.nvdisplay: hdmi: tmds rate:174500K prod-setting:prod_c_hdmi_111m_223m
[   75.492407] tegradc 15200000.nvdisplay: hdmi: get YCC quant from EDID.
[   75.529866] extcon-disp-state external-connection:disp-state: cable 47 state 1
[   75.529870] Extcon AUX1(HDMI) enable
[   75.532645] tegradc 15200000.nvdisplay: sync windows ret = 250
[   75.881482] tegradc 15200000.nvdisplay: blank - powerdown
[   75.920196] extcon-disp-state external-connection:disp-state: cable 47 state 0
[   75.920200] Extcon AUX1(HDMI) disable
[   75.943950] tegra_nvdisp_handle_pd_disable: Powergated Head1 pd
[   75.945114] tegra_nvdisp_handle_pd_disable: Powergated Head0 pd
[   75.945341] tegradc 15200000.nvdisplay: unblank
[   75.946539] tegra_nvdisp_handle_pd_enable: Unpowergated Head0 pd
[   75.946659] tegra_nvdisp_handle_pd_enable: Unpowergated Head1 pd
[   75.951719] Parent Clock set for DC plld2
[   75.956846] tegradc 15200000.nvdisplay: hdmi: tmds rate:174500K prod-setting:prod_c_hdmi_111m_223m
[   75.958467] tegradc 15200000.nvdisplay: hdmi: get YCC quant from EDID.
[   75.994324] extcon-disp-state external-connection:disp-state: cable 47 state 1
[   75.994329] Extcon AUX1(HDMI) enable
[   75.998686] tegradc 15200000.nvdisplay: sync windows ret = 249
kxm@kxm:~$