Official Raspberry Pi Touchscreen [Fixes

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===== Official Raspberry Pi Touchscreen =====

==== Rotating the Official 7" Touchscreen ====

Create the following DESKTOP-file
<panel type="info" icon="glyphicon glyphicon-file" title="/etc/xdg/autostart/rotate-screen.desktop">
<code bash>
[Desktop Entry]
Type=Application
Name=Rotate DSI 180°
Exec=/usr/bin/wlr-randr --output DSI-1 --transform 180
Hidden=false
NoDisplay=false
X-GNOME-Autostart-enabled=true
</code>
</panel>
Check if DSI-1 is the correct display, use ''wlr-randr'' to check this out.

**Legacy mode (pre-TRIXIE):**
++++ Show / Hide |
Comment the following line in your ''/boot/config.txt'' (to disable this parameter):
<code bash>
# Enable DRM VC4 V3D driver
#dtoverlay=vc4-kms-v3d
</code>

And add the following line to your config:
<code bash>
# rotate screen
lcd_rotate=2
display_rotate=0
</code>
++++

==== Run chromium in kiosk mode at startup ====

Firstly enable autologin and boot to desktop. Therefore you can use the ''raspi-config''-tool:
<code bash>sudo raspi-config</code>

Just add the following lines to the ''labwc'' (a Wayland compositor) config:
<panel type="info" icon="glyphicon glyphicon-file" title="nano ~/.config/labwc/autostart">
<code bash>
# The actual kiosk launch
# Use chromium (or chromium-browser — try both if one fails)
chromium \
    --kiosk \
    --noerrdialogs \
    --disable-infobars \
    --no-first-run \
    --start-maximized \
    --audio-buffer-size=16384 \
    --enable-features=OverlayScrollbar \
    https://your-website.com &
</code>
</panel>
This also includes already a higher buffer size for playing streams (e.g. internet radio)


**Legacy mode (X11):**
++++ Show / Hide |
And then add the following line to the user's ''lxsession'' config:
<panel type="info" icon="glyphicon glyphicon-file" title="~/.config/lxsession/LXDE-pi/autostart">
<code bash>@chromium-browser --kiosk --disable-pinch <url-to-open></code>
</panel>

//Sourced from: [[https://baldbeardedbuilder.com/blog/setting-up-raspberry-pi-for-use-in-kiosk-mode-with-chromium/|baldbeardedbuilder.com - Chromium in kiosk mode]]//
++++
==== Turn off screen automatically after a period of inactivity ====

To enable this "energy saving"-setting create a system service file under ''/etc/systemd/system/'' with the name ''screenblanking.service'':
<code bash>sudo nano /etc/systemd/system/screenblanking.service</code>

Then add this content:
<code bash>
[Unit]
Description=Automatic screen blanking
After=network.target network-online.target

[Service]
Environment=DISPLAY=:0.0
RestartSec=40
Restart=always
User=pi
ExecStart=/usr/bin/xset dpms force off

[Install]
WantedBy=multi-user.target
</code>

Finally save the service and enable it with:
<code bash>sudo systemctl enable screenblanking.service</code>

//Partially sourced from [[https://forums.raspberrypi.com/viewtopic.php?t=281523|forums.raspberrypi.com - know a command-line for turning off the screen?]]//