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

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On Tue, Sep 27, 2022 at 03:37:22PM +0000, Ed R via lists.automotivelinux.org wrote:
>  Hi Scott!
> Thanks for the quick response, really appreciate it!
> Maybe this is worth documenting on the wiki - agl-distro:agl-raspberrypi [Automotive Linux Wiki]
Hello,

The wiki is more like a place for roadmaps & meeting notes, with recent
efforts to clear it up and have it updated.

Our official documentation is at https://docs.automotivelinux.org/, with 
https://docs.automotivelinux.org/en/needlefish/#6_How_To_Contribute/1_Getting_Linux_Foundation_account/
on how to improve it and contribute.
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> -Ed    On Tuesday, September 27, 2022 at 11:01:43 AM EDT, Scott Murray <scott.murray@xxxxxxxxxxxx> wrote:  
>  
>  On Tue, 27 Sep 2022, Ed R via lists.automotivelinux.org wrote:
> 
> > 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!
> 
> We stopped supporting scaling of the UI in the demo at some point, so
> what you're seeing is expected since the touchscreen isn't 1920x1080.
> 
> Scott
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