Strange behaviour of screen on R Pi 3

Support & Help Requests Raspberry Pi
#1

Hello everybody, I’m quite new to linux and raspberry community.

I’ve been having some troubles with the screen settings, and in the pic you can see how the menu looks like ( I’m using a HDMI VGA adapter).

https://www.dropbox.com/s/2kbli0yr1lrlkqn/IMG_20180320_121007387.jpg?dl=0

I’ve tried
sudo nano /boot/config.txt
and tried editing the resolution (cos I can not change resolution from the settings menu, WTF? ) and also tried safe mode, without sucess, it even got worse.

What can I do?
Thanks a lot in advance!

#2

Hello Nicolas, welcome to the forum.

If your talking about the border around the edges of the screen, then you need to disable overscan.

sudo nano /boot/config.txt

and uncomment

disable_overscan=1

After rebooting, your screen should be filled.

#3

Hello and thank you for the welcome.

The problem that concerns me here is not the borders but the strange green and erratic pixels that move throughout the screen. Like the picture for example.
https://www.dropbox.com/s/gr7l2qx4vvv21tx/IMG_20180320_215546252.jpg?dl=0
See all those green and pink dots? They are actually appearing and disappearing.

#4

I have never seen anything like that before. :thinking:

Can you hook up another computer to that monitor to see if the same thing occurs ?

#5

Hi @Nicolas_Logioia,

have you double-checked the HDMI-VGA adapter, I suspect that a pin is not sitting correctly?. :smiley:

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