nvdisplay : how to turn off screen sleeping

Autonomous Machines Jetson & Embedded Systems Jetson TX2
#1

Hello,

I am currently working on the deployment of a qt application on jetsonTX2 (connect tech orbitty motherboard) with a graphical user interface.

I have installed l4t32.2.1 (ubuntu 18.04) on the TX2. My application start automatically at boot with a rc.local script. To achieve this I uninstall all the graphical environment such as lightdm and the desktop environment. Everything works in console mode.

Everything works well except that after 10 min the screen goes to sleep. I tried this command :

setterm -powerdown 0

but it does not change anything. I also tried to stop these services

sudo systemctl mask sleep.target suspend.target hibernate.target hybrid-sleep.target suspend-then-hibernate.target

but it does not work either.

Here is the result of the dmesg command just after the screen goes to sleep and once it comes out to sleep.

[  613.459925] tegradc 15210000.nvdisplay: blank - powerdown
[  613.512005] extcon-disp-state external-connection:disp-state: cable 47 state 0
[  613.512008] Extcon AUX1(HDMI) disable
[  613.534349] tegra_nvdisp_handle_pd_disable: Powergated Head2 pd
[  613.534446] tegra_nvdisp_handle_pd_disable: Powergated Head1 pd
[  613.535276] tegra_nvdisp_handle_pd_disable: Powergated Head0 pd
[  630.476058] tegradc 15210000.nvdisplay: unblank
[  630.476878] tegra_nvdisp_handle_pd_enable: Unpowergated Head0 pd
[  630.476970] tegra_nvdisp_handle_pd_enable: Unpowergated Head1 pd
[  630.477052] tegra_nvdisp_handle_pd_enable: Unpowergated Head2 pd
[  630.478364] Parent Clock set for DC plld2
[  630.481267] tegradc 15210000.nvdisplay: hdmi: tmds rate:71000K prod-setting:prod_c_hdmi_54m_111m
[  630.482498] tegradc 15210000.nvdisplay: hdmi: get RGB quant from EDID.
[  630.482504] tegradc 15210000.nvdisplay: hdmi: get YCC quant from EDID.
[  630.519005] extcon-disp-state external-connection:disp-state: cable 47 state 1
[  630.519009] Extcon AUX1(HDMI) enable
[  630.521507] tegradc 15210000.nvdisplay: unblank

I think there is something with nvdisplay but I don’t know how to configure this to stop the screen goes to sleep. Any help would be appreciated.

thanks.

#2

Hi,

Actually this should be nothing to do with nvdisplay driver but user space configuration.

Please refer to this thread:
https://devtalk.nvidia.com/default/topic/1043733/jetson-tx2/how-to-disable-screen-off-and-screen-lock-on-jetpack3-1-of-tx2-device/

#3

Hi,

I tried the following commands but without success :

gsettings set org.gnome.settings-daemon.plugins.power sleep-inactive-ac-type nothing
gsettings set org.gnome.settings-daemon.plugins.power sleep-inactive-ac-timeout 0
gsettings set org.gnome.settings-daemon.plugins.power sleep-inactive-battery-type nothing
gsettings set org.gnome.settings-daemon.plugins.power sleep-inactive-battery-timeout 0
gsettings set org.gnome.desktop.session idle-delay 0	
gsettings set org.gnome.desktop.screensaver.lock-enabled false

I don’t have the “sleep-display-ac” and the “sleep-display-battery” key in “org.gnome.settings-daemon.plugins.power”

Here is the keys I have in org.gnome.settings-daemon.plugins.power :

gsettings get org.gnome.settings-daemon.plugins.power
active                                   idle-brightness                          percentage-critical                      sleep-inactive-battery-type
ambient-enabled                          idle-dim                                 percentage-low                           time-action
button-hibernate                         lid-close-ac-action                      power-button-action                      time-critical
button-power                             lid-close-battery-action                 priority                                 time-low
button-sleep                             lid-close-suspend-with-external-monitor  sleep-inactive-ac-timeout                use-time-for-policy
button-suspend                           notify-perhaps-recall                    sleep-inactive-ac-type
critical-battery-action                  percentage-action                        sleep-inactive-battery-timeout

Is there another parameter that I need to change?

Thanks

#4