Display issue with official Raspberry PI 4 touch screen with Needlefish 14.0.1

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Subject: Display issue with official Raspberry PI 4 touch screen with Needlefish 14.0.1

From: "Ed R via lists.automotivelinux.org" <ejrodri2=yahoo.com@xxxxxxxxxxxxxxxxxxxxxxxxx>

Date: Tue, 27 Sep 2022 09:59:18 -0400

Mailing-list: list agl-dev-community@xxxxxxxxxxxxxxxxxxxxxxxxx; contact agl-dev-community+owner@xxxxxxxxxxxxxxxxxxxxxxxxx

References: <5F431471-8F6F-4E89-88E7-47443B5F2478.ref@hxcore.ol>

Reply-to: agl-dev-community@xxxxxxxxxxxxxxxxxxxxxxxxx

Hi,

I am new to this group and noticed an issue while interfacing official Raspberry PI 4 touch screen with Raspberry PI 4 board and latest Needlefish 14.0.1 release. After much search I found out that it worked with icefish and tried that release on my setup, which works perfectly fine.

I am downloading Needlefish 14.0.1 release image. This works perfectly fine with HDMI display. But with touch screen, U-boot comes up and initial boot messages are displayed on the screen, once Linux boots up no display. I have serial console connected, system is up and I can access the Linux console.

dtoverlay=vc4-kms-dsi-7inch

Also, I can bring up the display by appending “ dtoverlay=vc4-kms-dsi-7inch

“ to /boot/config.txt but the screen resolution is incorrect. Mode changes to screen resolution or name changes to DSI in weston.ini makes no difference.

I’m sure I am missing some documentation which changed between icefish and later releases.

Any help is greatly appreciated!

Thanks,

Sent from Mail for Windows

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