IMX8EVK HDMI display example

[lingguan]

Hello,

     I want to ask whether there are some examples to test imx8mqevk HDMI ? For example, showing some pictures or videos, or QT demo ?

Sincerely.

[pavel_badin]

Hello,

probably might be funny reason but on MEK CPU board there is no HDMI signal if the mouse/keyboard are not plugged into the USB connector. Just make sure it is not this reason :smileyhappy:

[joanxie]

the default demo image supports HDMI directly, you can use mfgtool to download demo image to board then boot up, you can play video or somthing to the HDMI directly

[lingguan]

Hi Joan Xie,

    If I stop uboot, there are something displayed on the HDMI display. But when I start the linux, it's "no signal" on the display.

   I use the image L4.9.51 and bitbake fsl-image-qt5-validation-imx-xwayland.

[joanxie]

if you don't stop the uboot, the board can boot up successfully?

[lingguan]

[joanxie]

have you fixed the issue?

[lingguan]

Dear Xie,

      No, I cannot solve the problem. I also try the 4.9.123 kernel, but no HDMI signal.

Sincerely.

[joanxie]

I haven't tested this version, but when I use UUU tool to program the newer yocto version, the image supports HDMI output as default

[lingguan]

What is the yocto version? And what is the kernel version?

Thank you.

[joanxie]

yocto 4.14.98

[lingguan]

yeah, the board can auto boot up successfully.