Raspberry pi 4 and HDMI touchscreen

Hi all,

Im kind chasing my own tail last few days :slight_smile: so I decide just to ask.

my setup:
Raspberry Pi 4, 4GB
Volumio 2.882-2021-04-24-pi
touchscreen GeChic 1303i (13.3 inch 1080p Touchscreen) connected via HDMI

is it possible for this version of Volumio on this version of Raspberry to work with this screen?

Steps that I did:

  1. log via ssh
  2. sudo apt update
  3. from GUI install Touch Display 1.3.0 plugin
  4. in /boot/config.txt I added flowing lines:
    hdmi_group=2
    hdmi_mode=87
    hdmi_cvt 1920 1080 60 3 0 0 0
    hdmi_drive=1
    And there is no error as far as I can see, but there is also no picture on Touchscreen.

In addition when I run systemctl status -l volumio-kiosk there is following:
May 20 11:16:37 volumiocotra pulseaudio[1317]: Unable to contact D-Bus: org.freedesktop.DBus.Error.Spawn.ExecFailed: /usr/bin/dbus-launch terminated abnormally without any error message
May 20 11:16:37 volumiocotra pulseaudio[1317]: Unable to contact D-Bus: org.freedesktop.DBus.Error.Spawn.ExecFailed: /usr/bin/dbus-launch terminated abnormally without any error message
May 20 11:16:37 volumiocotra pulseaudio[1317]: org.bluez.Manager.GetProperties() failed: org.freedesktop.DBus.Error.UnknownMethod: Method “GetProperties” with signature “” on interface “org.bluez.Manager” doesn’t exist

I do not know is this relevant for issue with touchscreen?

Br,
Dejan

bluez is BT, how did you install the kiosk? is that touch display plugin?
if want some advice i would try the 3.xx instead this release …

Hi

Yes I installed Touch Display 1.3.0 via WebUI.

your screen needs usb for touch ? if you need help with your display
@gvolt knows a lot of displays …
is he missing the usb line in the config? gvolt?

Yes.

I connect screen to raspi via usb.

Make sure the display is connected to input HDMI 0 of your Pi.

But just for touch and maybe power, right? Display (visual) gets data over HDMI.

1 power usb
2 usb for touch
3 hdmi for output…

Ok, it was connected to HDMI 1, I connected it now to HDMI 0, but result is the same no picture

Yes just touch is connected via USB, Visual goes over HDMI. Regarding power screen is connected to 220V in wall socket. so power is not coming over usb.

Did you reboot after that?

Please post the (complete) results of

cat /boot/config.txt

cat /boot/userconfig.txt

systemctl status -l volumio-kiosk.service

and

cat /var/log/Xorg.0.log

Please also double-check that the micro-HDMI connector is plugged into the right output of the screen.

It working now.

Its was connected to HDMI 0 and I did reboot it.

But it start working once I remove:
hdmi_group=2
hdmi_mode=87
hdmi_cvt 1920 1080 60 3 0 0 0
hdmi_drive=1
from /boot/config.txt that I added previously.

Tnx for you help and quick responses.

One more question. Its not in full screen. There are black margins on edges.
Is there a way/some settings so that that picture appears in full screen.

Br,
Dejan

Hello,

I think maybe you forgot “=” from the 3rd line

Possibly mode 82 for hdmi group 2 could fit your screen:

hdmi_group=2
hdmi_mode=82
hdmi_drive=1

Yes you are right, I just copy/pasted from somewhere. change values but I did not add = :slight_smile:

This helped. Now its in fullscreen and it works like a charm :slight_smile:

Thank you for help and quick responses.

Br,
Dejan

No worries, glad I could help :upside_down_face: