VNC on embedded raspberry app

Emerson Siega

Hi,

I need to connect via VNC client on a Linux embedded (without GUI). My app was developed with Qt 5.7.0.
I followed this instructions, but the image is rendered distorted:
alt text

If somebody knows how to solve this, I will be very grateful.

SGaist

Hi,

You should consider upgrading to 5.9.1, you'll have there a VNC backend directly in Qt that should simplify your life.

Emerson Siega

@SGaist thanks for your answer.

We tried this, but when we start the application, we only can view the screen on VNC client. In Raspberry the screen stay black.
We need to start the app and use it normally on the Raspberry, and, when necessary, connect to it via VNC Client and view what is going on.

SGaist

Is everything running correctly on the Pi ?

Note that upgrading would still be a good idea since 5.9 is the new LTS.

Emerson Siega

@SGaist Yes, everything is OK. The app is running with no problems and using little processing.

We think to upgrade the QT version, but not now. We need to make this work with version 5.7.

Emerson Siega

Finally I discovered what happens... The problem its I'm using an adaptor HDMI > VGA. When I connect my raspberry direct with HDMI, works very well.

SGaist

Glad you found out and thanks for the feedback !