On the imx6dl chip,
The dual display fb state is as follows.
root@imx6dlsabresd:~# ls -l /sys/class/graphics/
total 0
lrwxrwxrwx 1 root root 0 Sep 20 10:16 fb0 -> ../../devices/platform/fb@0/graphics/fb0
lrwxrwxrwx 1 root root 0 Sep 20 10:16 fb1 -> ../../devices/platform/fb@0/graphics/fb1
lrwxrwxrwx 1 root root 0 Sep 20 10:16 fb2 -> ../../devices/platform/fb@1/graphics/fb2
lrwxrwxrwx 1 root root 0 Sep 20 10:16 fbcon -> ../../devices/virtual/graphics/fbcon
I set up the dual display.
As you told me,
"one can try procedures described in Chapter 14 Dual Display attached Linux Manual"
echo 1 > /sys/class/graphics/fb0/blank
echo 1> /sys/class/graphics/fb1/blank
echo 1-layer-fb > /sys/class/graphics/fb2/fsl_disp_property
echo 0 > /sys/class/graphics/fb0/blank
echo 0 > /sys/class/graphics/fb1/blank
echo 0 > /sys/class/graphics/fb2/blank
When I executed the command, there was no error as if it had been set to normal. Now that I'm executing the command on the other way around,
echo 1 > /sys/class/graphics/fb0/blank
echo 1-layer-fb > /sys/class/graphics/fb0/fsl_disp_propertyroot@imx6dlsabresd:~# echo 1> /sys/class/graphics/fb1/blank
root@imx6dlsabresd:~# echo 1-layer-fb > /sys/class/graphics/fb0/fsl_disp_property
[ 942.594130] graphics fb0: Can not switch while fb2(fb-fg) is on.
There's an error.
What is the problem?
Will there be a problem if the resolution is different?
HDMI 1920x 1080, lcd 1280x1024
Hello yoonseok,
I think the hdmi is not on the well location
&hdmi_core {
ipu_id = <1>; // IPU 1
disp_id = <0>; // Display 0
status = "okay";
};
But is preferable to goes to professional services
Regards
모든 것이 잘 진행되었습니다.
감사합니다.
The current setting status is as follows.
Isn't ipu <1> unavailable for imx6DL because there is only one ipu?
&hdmi_core {
ipu_id = <0>;
disp_id = <1>;
status = "okay";
};
&lcd_disp {
ipu_id = <0>;
disp_id = <0>;
status = "okay";
};