Monitor has backlight with cursor display after brightness and lock setting

[weileng]

Based on JP4.5.1 and JP4.6.2, it was found issues as follows:

1. open system setting-> Brightness&lock
2. setting "Turn screen off when incative for: 1 minute
   and Lock setting “OFF”
3. waiting for one minute, and watch monitor

Normally, the monitor should be off and cursor should be disappear. we can duplicate this phenomenon on NV Xavier NX dev kit.

[kayccc]

This seems to be Ubuntu bug, not sure how critical is, will forward to internal team to investigate.
Can you help to check if can reproduct at JetPack 5.0.1 DP version?

Thanks

[weileng]

Hi Kayccc

It was found DP 5.0 still has such issue in my test with 4K monitor.

[weileng]

Any update?

[kayccc]

Please try with JetPack-5.0.2 GA release. Thanks

[weileng]

Hi Kayccc

JetPack-5.0.2 GA still found such issue.

[ 607.963913] extcon-disp-state external-connection:disp-state: cable 47 state 1
[ 607.963917] Extcon AUX1(HDMI) enable
[ 607.963979] tegradc 15200000.display: unblank
[ 607.964095] tegradc 15210000.display: blank - powerdown
[ 763.970835] tegradc 15200000.display: blank - powerdown
[ 764.035624] extcon-disp-state external-connection:disp-state: cable 47 state 0
[ 764.035630] Extcon AUX1(HDMI) disable
[ 764.059415] tegra_nvdisp_handle_pd_disable: Powergated Head1 pd
[ 764.060799] tegra_nvdisp_handle_pd_disable: Powergated Head0 pd
[ 764.060946] tegradc 15210000.display: blank - powerdown
[ 771.597475] extcon-disp-state external-connection:disp-state: cable 53 state 0
[ 771.597485] Extcon HDMI: HPD disabled
[ 771.597490] tegradc 15200000.display: hdmi: unplugged
[ 771.600173] tegradc 15200000.display: blank - powerdown
[ 771.600191] tegradc 15210000.display: blank - powerdown
[ 771.844495] tegradc 15200000.display: blank - powerdown
[ 771.844518] tegradc 15200000.display: unblank
[ 771.845985] tegra_nvdisp_handle_pd_enable: Unpowergated Head0 pd
[ 771.846214] tegra_nvdisp_handle_pd_enable: Unpowergated Head1 pd
[ 771.863770] tegradc 15200000.display: hdmi: tmds rate:533250K prod-setting:prod_c_hdmi_300m_600m
[ 771.868133] tegradc 15200000.display: hdmi: get YCC quant from EDID.
[ 771.872756] extcon-disp-state external-connection:disp-state: cable 47 state 1
[ 771.872767] Extcon AUX1(HDMI) enable
[ 771.877320] tegradc 15200000.display: blank - powerdown
[ 771.877435] extcon-disp-state external-connection:disp-state: cable 53 state 1
[ 771.877438] Extcon HDMI: HPD enabled
[ 771.877442] tegradc 15200000.display: hdmi: plugged
[ 771.901896] extcon-disp-state external-connection:disp-state: cable 47 state 0
[ 771.901901] Extcon AUX1(HDMI) disable
[ 771.930300] tegra_nvdisp_handle_pd_disable: Powergated Head1 pd
[ 771.931351] tegra_nvdisp_handle_pd_disable: Powergated Head0 pd
[ 771.931793] tegradc 15210000.display: blank - powerdown
[ 771.965072] tegradc 15200000.display: blank - powerdown
[ 771.965112] tegradc 15200000.display: unblank
[ 771.966671] tegra_nvdisp_handle_pd_enable: Unpowergated Head0 pd
[ 771.966886] tegra_nvdisp_handle_pd_enable: Unpowergated Head1 pd
[ 771.979868] tegradc 15200000.display: hdmi: tmds rate:533250K prod-setting:prod_c_hdmi_300m_600m
[ 771.981988] tegradc 15200000.display: hdmi: get YCC quant from EDID.
[ 771.986026] extcon-disp-state external-connection:disp-state: cable 47 state 1
[ 771.986030] Extcon AUX1(HDMI) enable
[ 771.986107] tegradc 15200000.display: unblank
[ 771.986135] tegradc 15210000.display: blank - powerdown

[DaneLLL]

Hi,
This looks to be an issue in Ubunut desktop. See if other users can share experience.

Or you may try LXDE:
Save 1GB of Memory! Use LXDE on your Jetson - JetsonHacks

[weileng]

Hi Dane,

It seems JP5.02 doesn’t support LXDE, right?

[DaneLLL]

Hi,
It is not enabled by default. You may follow the guidance for a try.