116 views
in Platform Packages by

I'm using EW for target platform Raspberry Pi.

When i run app i get initialize display failed.

I couldnt find where the problem is and when i can change drm device node from card0 to card1.

1 Answer

0 votes
by

Hello,

the DRM device node is detected automatically, there is no setting to choose card0 or card1.

In order to help you, let me ask you some questions:

  • What display settings have you made in the configuration file ewconfig.h?
  • Which displays are connected on DSI, HDMI0 and HDMI1?
  • Do you see the console outputs of the boot sequence on the HDMI display?
  • What display setting have you made in /boot/config.txt?

Best regards,

Manfred. 

by

HDMI is connected to HDMI 0

and the settings of your request is on the picture below

by
Hello,

is there something connected on DSI and/or HDMI1?

Do you see the console outputs during the boot sequence of the RasPi on the HDMI display?

What happens when you set EW_DISPLAY_USE_PREFERRED_MODE 1?

Best regards,

Manfred.
by

I think I resolve problem by modify a config.txt on Raspberry 4B we need to declare hdmi_group and hdmi_mode for each HDMI like on the picture below:

Right now everythink is ok

by
Great to hear that it is working now!

Ask Embedded Wizard

Welcome to the question and answer site for Embedded Wizard users and UI developers.

Ask your question and receive answers from the Embedded Wizard support team or from other members of the community!

Embedded Wizard Website | Privacy Policy | Imprint

...