How to choose between dual displays.

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How to choose between dual displays.

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yoonseok
Contributor III

Display ported on the board

fb@0 --> Parallel lcd (1024 x 768)
fb@1 --> HDMI (1920x1080)


root@imx6qpdlsolox:~# ls -l /sys/class/graphics/
total 0
lrwxrwxrwx 1 root root 0 Sep 20 10:16 fb0 -> ../../devices/platform/fb@1/graphics/fb0
lrwxrwxrwx 1 root root 0 Sep 20 10:16 fb1 -> ../../devices/platform/fb@1/graphics/fb1
lrwxrwxrwx 1 root root 0 Sep 20 10:16 fb2 -> ../../devices/platform/fb@0/graphics/fb2
lrwxrwxrwx 1 root root 0 Sep 20 10:16 fbcon -> ../../devices/virtual/graphics/fbcon


The order below can be used for fb0.

display]
$ echo 0 > /sys/class/graphics/fb0/blank

[op. CMOS]
$ gst-launch-1.0 imxv4l2src device=/dev/video1 ! imxv4l2sink




It doesn't work for fb1 with the command below.
Should I do an option or other command for fb1 in the camera below?

display]
$ echo 0 > /sys/class/graphics/fb2/blank
[op. CMOS]
$ gst-launch-1.0 imxv4l2src device=/dev/video1 ! imxv4l2sink

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2 Replies

944 Views
yoonseok
Contributor III

The same image needs to be displayed at the same time.( dual display)

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935 Views
igorpadykov
NXP TechSupport
NXP TechSupport

Hi Yoonseok

 

one can try procedures described in Chapter 14  Dual Display attached Linux Manual.

 

Best regards
igor

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