CODEWITHSUNDEEP
linuxshellraspberry-pi3hdmi
narges
narges

Reputation: 751

enable HDMI port after Disable it with shell programing in raspberry pi 3

I used a raspberry pi 3 model b v1.2. raspberry connected to a TV with HDMI port. I want to disable and enable HDMI port with shell program. I use this code for doing that. also, i install a teamviewer in raspberry and can control that with my laptop. when i run sh rpi-hdmi.sh off in terminal, HDMI port disable correctly and see this message in terminal:

Power off HDMI

but when i run sh rpi-hdmi.sh on, i see in TV that clear "no signal" message. but it not showing anything and i see just black tv. when i run sh rpi-hdmi.sh on for first one, i see this message:

Power on HDMI with preferred settings
Couldn't get a file descriptor referring to the console

but for second one, i see just this message:

Power on HDMI with preferred settings

What must i do, for showing desktop in TV after enable HDMI port?

Upvotes: 0

Views: 1526

Answers (1)

z.gomar
z.gomar

Reputation: 370

When you run sh rpi-hdmi.sh on, the line of tvservice -p need some time to run correctly. if you want to enable HDMI port quickly, you may run this code: 

tvservice -p
xset dpms force on

Upvotes: 1

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