Hi,
I'm trying to set-up a Raspberry Pi with the Official 7" TouchScreen to run an LCD set-up on reboot.
I need to rotate the screen, easily done in the config.txt and the doings are documented but I also need to scale the screen so that the application fits the screen. This is my problem and I cannot determine how to accomplish it.

The command to scale the display from the console is
PI@RPi :~ S xrandr --output DSI-1 --scale 2x2
but I need to somehow run this at reboot.

Is there a command to do the same in the /boot/config.txt file ?
thanks, Mike

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Hello Mike,

I'm trying to set-up a Raspberry Pi with the Official 7" TouchScreen to
run an LCD set-up on reboot.
I need to rotate the screen, easily done in the config.txt and the
doings are documented but I also need to scale the screen so that the application fits the screen. This is my problem and I cannot determine
how to accomplish it.

The command to scale the display from the console is
PI@RPi :~ S xrandr --output DSI-1 --scale 2x2
but I need to somehow run this at reboot.

Is there a command to do the same in the /boot/config.txt file ?
thanks, Mike

See below what I found in several years:

Rotate screen:
Modify: config.txt
<http://elinux.org/R-Pi_configuration_file>
<http://elinux.org/RPiconfig>
Add: display_rotate=1
for 90 degrees
or add: display_rotate=3
for 270 degrees

For TouchScreen getting working: <https://fmirkes.github.io/articles/20190827.html>
C-Library: 'evdev-right-click-emulation'
Install and follow their instructions.
Then the right mouse click also works.

Other solution: <https://youtu.be/BDmuI-x02BQ>

You can organize AutoStart here:
sudo nano /etc/xdg/lxsession/LXDE-pi/autostart
Add what you wanted to start automatic after every boot.
In my case I added:
@/usr/bin/opencpn
For AIS+ECDIS viewing charts and ships when sailing.

Good luck with this.

Henri.

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* Origin: Connectivity is the Future; 77:174:89:46 (2:280/1208)