Support for official 7" screen

mattho

Hi Folks, just trialling the build 0.2.3 for rpi with the official 7" screen and yep it works but - it's very fuzzy and looks like 8-bit colour depth - nothing like when running with the stock Rasbian image.

I do notice in kalkov's post you refer to the display flickering caused by the kernel driver. Is this a temporary thing and have you plans to improve support for this display or are you focusing on HDMI?

Cheers Mat

IKS

Well, we hope very much that this is a temporary thing. Right now we have no idea what is causing this behavior, since it was working pretty well in the past. It is definitely on our TODO list, but for now there is no OTA for the fix.

jojonl

What's the status on this. The company I work for has been using rpi's since the beginning and would like to run android on them also.

schake

This is an issue in the open-source Videocore 4 GPU driver:

https://github.com/anholt/linux/issues/99

Unfortunately, we rely on it to do hardware accelerated rendering without which Android doesn't run at all. In my experiments, it helps using the "vc4-fkms-v3d" overlay (you can configure this in config.txt on the boot partition) instead of the "vc4-kms-v3d" one. However, this seems to cause some tearing issues. It's something that is on our mind, but it's a rather involved issue.

dMod

@mattho said:
Hi Folks, just trialling the build 0.2.3 for rpi with the official 7" screen and yep it works but - it's very fuzzy and looks like 8-bit colour depth - nothing like when running with the stock Rasbian image.

I do notice in kalkov's post you refer to the display flickering caused by the kernel driver. Is this a temporary thing and have you plans to improve support for this display or are you focusing on HDMI?

Cheers Mat

How did you manage to rotate the screen?

IKS

You can use one of the Android apps like "Rotation Control" for this.

Aquadukt

I'm running release 09.10.2017 and the display does also work not verry well. The complete screen is out of focus and its not a stable oicture. Its jitteringall the time.

It suppose the resolution is not configured correct for the dislay. Is there a way to do this?

IKS

No, its the driver issue - we hope the VC4 driver will be fixed soon. Please check the answers above.

Aquadukt

and also it is not possile to enter recover mode with the display. complete screen is mirror-inverted. I can not read and use anything

IKS

This is strange, it is working fine in our setup. Thanks for reporting, we will take a look at it.

Aquadukt

I installed completely new.
Now the recover mode is working correct. Strange thing...

But my first point with screen is out of focus and its not a stable picture is still existing. Hope there will be a working driver available soon.

By the way... If there is a new driver available. How can I update this? Or must I do a completely new installation once again??

IKS

We are working on automatic updates. The recovery support was the biggest step in this way. We still need to implement the OS part - updating from our servers. It will be there eventually, but I can't promise any deadlines.

The next question is: as soon as its there... how will everybody update without having this functionality included. Maybe it will be possible through recovery. Maybe a new installation will be required. I can't tell yet.