screen blanking without turning screen off
I recently swapped my raspberry pi with an intel nuc for one project PC. The PC is connected tv screen.
On the raspberry I was able to edit /boot/config.txt with one comment hdmi_blanking=0 -> HDMI Output will blank instead of being disabled reference here
with this configuration I was able to blank the tv screen in total with
xset -display :0 set s activate
or even with
xset -display 0 dpms force off
Problem:
when I now run the xset -display 0 dpms force off the hdmi port gets disabled and the tv screen show the nag "signal lost on HDMI1" ...
So my workaround at the moment is:
xsetroot -display :0 -solid '#000000'
xset -display :0 s noblank
xset -display :0 s activate
are these comments. when i leave the setting s to blank the signal would be lost again thats why i have it set to noblank.
The result is that the screen goes black but still has the backlight on. On RPI with the dpms force off and the config file adapted it would turn the backlight off which is important for my situation.
does anyone have an idea? I am running Ubuntu 18.04 with kernel 4.19.9
power-management screen hdmi intel
edited Dec 16 at 11:38
Sergiy Kolodyazhnyy
69.4k9144305
asked Dec 16 at 11:34
dirkie
1
add a comment |
I recently swapped my raspberry pi with an intel nuc for one project PC. The PC is connected tv screen.
On the raspberry I was able to edit /boot/config.txt with one comment hdmi_blanking=0 -> HDMI Output will blank instead of being disabled reference here
with this configuration I was able to blank the tv screen in total with
xset -display :0 set s activate
or even with
xset -display 0 dpms force off
Problem:
when I now run the xset -display 0 dpms force off the hdmi port gets disabled and the tv screen show the nag "signal lost on HDMI1" ...
So my workaround at the moment is:
xsetroot -display :0 -solid '#000000'
xset -display :0 s noblank
xset -display :0 s activate
are these comments. when i leave the setting s to blank the signal would be lost again thats why i have it set to noblank.
The result is that the screen goes black but still has the backlight on. On RPI with the dpms force off and the config file adapted it would turn the backlight off which is important for my situation.
does anyone have an idea? I am running Ubuntu 18.04 with kernel 4.19.9
power-management screen hdmi intel
edited Dec 16 at 11:38
Sergiy Kolodyazhnyy
69.4k9144305
asked Dec 16 at 11:34
dirkie
1
...so you effectively want to output and image that consists of only black pixels?
– danzel
Dec 16 at 12:01
mh no. because with xset root i only output black pixels. but still the backlight of the screen is on
– dirkie
Dec 16 at 12:05
to be precise i want to achive this: HDMI Output will blank instead of being disabled - quote: "The hdmi_blanking command allows you to choose whether the HDMI output should be switched off when DPMS is triggered. This is to mimic the behaviour of other computers. After a specific amount of time, the display will become blank and go into low-power/standby mode due to receiving no signal."
– dirkie
Dec 16 at 17:23
add a comment |
I recently swapped my raspberry pi with an intel nuc for one project PC. The PC is connected tv screen.
On the raspberry I was able to edit /boot/config.txt with one comment hdmi_blanking=0 -> HDMI Output will blank instead of being disabled reference here
with this configuration I was able to blank the tv screen in total with
xset -display :0 set s activate
or even with
xset -display 0 dpms force off
Problem:
when I now run the xset -display 0 dpms force off the hdmi port gets disabled and the tv screen show the nag "signal lost on HDMI1" ...
So my workaround at the moment is:
xsetroot -display :0 -solid '#000000'
xset -display :0 s noblank
xset -display :0 s activate
are these comments. when i leave the setting s to blank the signal would be lost again thats why i have it set to noblank.
The result is that the screen goes black but still has the backlight on. On RPI with the dpms force off and the config file adapted it would turn the backlight off which is important for my situation.
does anyone have an idea? I am running Ubuntu 18.04 with kernel 4.19.9
power-management screen hdmi intel
edited Dec 16 at 11:38
Sergiy Kolodyazhnyy
69.4k9144305
asked Dec 16 at 11:34
dirkie
1
I recently swapped my raspberry pi with an intel nuc for one project PC. The PC is connected tv screen.
On the raspberry I was able to edit /boot/config.txt with one comment hdmi_blanking=0 -> HDMI Output will blank instead of being disabled reference here
with this configuration I was able to blank the tv screen in total with
xset -display :0 set s activate
or even with
xset -display 0 dpms force off
Problem:
when I now run the xset -display 0 dpms force off the hdmi port gets disabled and the tv screen show the nag "signal lost on HDMI1" ...
So my workaround at the moment is:
xsetroot -display :0 -solid '#000000'
xset -display :0 s noblank
xset -display :0 s activate
are these comments. when i leave the setting s to blank the signal would be lost again thats why i have it set to noblank.
The result is that the screen goes black but still has the backlight on. On RPI with the dpms force off and the config file adapted it would turn the backlight off which is important for my situation.
does anyone have an idea? I am running Ubuntu 18.04 with kernel 4.19.9
power-management screen hdmi intel
power-management screen hdmi intel
edited Dec 16 at 11:38
Sergiy Kolodyazhnyy
69.4k9144305
asked Dec 16 at 11:34
dirkie
1
edited Dec 16 at 11:38
Sergiy Kolodyazhnyy
69.4k9144305
asked Dec 16 at 11:34
dirkie
1
edited Dec 16 at 11:38
Sergiy Kolodyazhnyy
69.4k9144305
edited Dec 16 at 11:38
Sergiy Kolodyazhnyy
69.4k9144305
edited Dec 16 at 11:38
Sergiy Kolodyazhnyy
69.4k9144305
69.4k9144305
asked Dec 16 at 11:34
dirkie
1
asked Dec 16 at 11:34
dirkie
1
asked Dec 16 at 11:34
dirkie
1
1
...so you effectively want to output and image that consists of only black pixels?
– danzel
Dec 16 at 12:01
mh no. because with xset root i only output black pixels. but still the backlight of the screen is on
– dirkie
Dec 16 at 12:05
to be precise i want to achive this: HDMI Output will blank instead of being disabled - quote: "The hdmi_blanking command allows you to choose whether the HDMI output should be switched off when DPMS is triggered. This is to mimic the behaviour of other computers. After a specific amount of time, the display will become blank and go into low-power/standby mode due to receiving no signal."
– dirkie
Dec 16 at 17:23
add a comment |
...so you effectively want to output and image that consists of only black pixels?
– danzel
Dec 16 at 12:01
mh no. because with xset root i only output black pixels. but still the backlight of the screen is on
– dirkie
Dec 16 at 12:05
to be precise i want to achive this: HDMI Output will blank instead of being disabled - quote: "The hdmi_blanking command allows you to choose whether the HDMI output should be switched off when DPMS is triggered. This is to mimic the behaviour of other computers. After a specific amount of time, the display will become blank and go into low-power/standby mode due to receiving no signal."
– dirkie
Dec 16 at 17:23
...so you effectively want to output and image that consists of only black pixels?
– danzel
Dec 16 at 12:01
...so you effectively want to output and image that consists of only black pixels?
– danzel
Dec 16 at 12:01
mh no. because with xset root i only output black pixels. but still the backlight of the screen is on
– dirkie
Dec 16 at 12:05
mh no. because with xset root i only output black pixels. but still the backlight of the screen is on
– dirkie
Dec 16 at 12:05
to be precise i want to achive this: HDMI Output will blank instead of being disabled - quote: "The hdmi_blanking command allows you to choose whether the HDMI output should be switched off when DPMS is triggered. This is to mimic the behaviour of other computers. After a specific amount of time, the display will become blank and go into low-power/standby mode due to receiving no signal."
– dirkie
Dec 16 at 17:23
to be precise i want to achive this: HDMI Output will blank instead of being disabled - quote: "The hdmi_blanking command allows you to choose whether the HDMI output should be switched off when DPMS is triggered. This is to mimic the behaviour of other computers. After a specific amount of time, the display will become blank and go into low-power/standby mode due to receiving no signal."
– dirkie
Dec 16 at 17:23
add a comment |
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...so you effectively want to output and image that consists of only black pixels?
– danzel
Dec 16 at 12:01
mh no. because with xset root i only output black pixels. but still the backlight of the screen is on
– dirkie
Dec 16 at 12:05
to be precise i want to achive this: HDMI Output will blank instead of being disabled - quote: "The hdmi_blanking command allows you to choose whether the HDMI output should be switched off when DPMS is triggered. This is to mimic the behaviour of other computers. After a specific amount of time, the display will become blank and go into low-power/standby mode due to receiving no signal."
– dirkie
Dec 16 at 17:23