Help with Gnome-Network-Displays

1

Hi. I tried using Gnome-Network-Displays Flatpak version. I have this issue:

One of the following codec plugins is required for audio support. Clicking will start the installation process. → (Nothing to click actually!)

One of the following codec plugins is required for video support. Clicking will start the installation process. → (Nothing to click actually!)

A required firewall zone is not available and could not be installed. Please try again and enter the password when prompted or contact a system administrator.

I am using Nvidia GeForce 940M (Driver is good. I am gaming in steam with no issues), VLC, GNOME 47.3. Firewalld, pipewire. Mutter(wayland) and linux kernel 6.12.10-arch1-1. This app used to work well when I was using Fedora. Please help.

2

Same behaviour here.

Endeavour OS (arch based), kernel 6-13-7-arch1, wayland, Gnome 48, Thinkpad x270 (intel video).

Installed flatpak yesterday. After selecting my TV and passing admin password I got the 3 above mentioned Errors but nothing to click. Firewalld is set to “trusted” and should allow everything.

What is missing? Why is Click to install list empty?

3

please start the app from command line and attach the log.

do you have the gnome xdg portal installed?

4 
gst-inspect-1.0 | grep -E "openh264enc|x264enc|vaapih264enc|openh264dec|avdec_h264|vaapih264dec"
libav:  avdec_h264: libav H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 decoder
openh264:  openh264dec: OpenH264 video decoder
openh264:  openh264enc: OpenH264 video encoder
vaapi:  vaapih264dec: VA-API H264 decoder
vaapi:  vaapih264enc: VA-API H264 encoder
x264:  x264enc: x264 H.264 Encoder

xdg-desktop-portal-gnome is installed, too.

starting app and selecting my Philips TV displays “step 1/2 - Connecting to device” on my TV. This takes 1 minute until “Error” is displayed in app window.

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❯ flatpak run org.gnome.NetworkDisplays
MESA-INTEL: warning: ../src/intel/vulkan/anv_formats.c:782: FINISHME: support YUV colorspace with DRM format modifiers
MESA-INTEL: warning: ../src/intel/vulkan/anv_formats.c:814: FINISHME: support more multi-planar formats with DRM modifiers

(gnome-network-displays:2): Gnd-WARNING **: 21:01:41.439: codec list not initialized

(gnome-network-displays:2): Gnd-WARNING **: 21:01:41.440: codec list not initialized
5

I do find the codec warning odd - it works fine for me using fedora

6

I have this same problem. Trying to cast from Fedora to a Philips TV and it showing error after some time. My logs also include the ‘codec list not initialized’ warnings:

❯ flatpak run org.gnome.NetworkDisplays

(gnome-network-displays:2): Gnd-WARNING **: 20:09:42.275: NdCCProvider: Failed to resolve Avahi service: Resolving failed: Timeout reached

(gnome-network-displays:2): Gnd-WARNING **: 20:10:25.818: codec list not initialized

(gnome-network-displays:2): Gnd-WARNING **: 20:10:25.818: codec list not initialized
7

You should probably report this to the devs directly

8

I am getting the same codec not initialized issue trying to cast to my tablet to use as a second display but unable to has a solution/work around been reached?

9

you probably need to be specific, what your tablet and your computer is and what they are running

10

I’m also having an issue. When I click on the TV I wish to connect to, It goes to time out and gives an error message. No other indication is given. I tried to run it in the terminal window and got the following errors:

(gnome-network-displays:2): Gtk-WARNING **: 15:44:57.261: Unable to acquire the address of the accessibility bus: GDBus.Error:org.freedesktop.DBus.Error.ServiceUnknown: org.freedesktop.DBus.Error.ServiceUnknown. If you are attempting to run GTK without a11y support, GTK_A11Y should be set to ‘none’.

(gnome-network-displays:2): Gnd-WARNING **: 15:44:57.402: Failed to create screencast session: Screencast SelectSources() failed

I’m not sure how to fix this. Any suggestions would be greatly appreciated.

I’m running Raspberry Pi 5 raspian bookworm

Thanks