Hi,

I recently got a raspberry pi 4B 2Gb and decided to install raspbian OS ans kstars on it.
I managed to install folowing the indilib.org steps:

<<
wget -O - www.astroberry.io/repo/key | sudo apt-key add -
sudo su -c "echo 'deb www.astroberry.io/repo/ buster main' > /etc/apt/sources.list.d/astroberry.list"
sudo apt update
sudo apt install indi-full kstars-bleeding gsc
>>
it all went very well, but when lauching kstars on the 1920x1080 screen, at first the banner is very big and pixelized, and then it shows the sky also for much too big and pixelised.
Moover, it connot be reduced using zooming options.

Kstars returns on the command line is clean.

Do you have an idea of what the problem is?
Thanks a lot for helping.