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chromecast: no audio when casting screen, works with tab

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Hi.


System in running "Testing", using KDE, I'm trying to get Chromium to 
send audio via Chromecast as well as video.


After enabling the relevant flag[1], I've tried casting a single tab and 
playing a video. It worked well, with audio coming from TV.

Stopped the transmission, switched source to desktop and restarted: 
video is shown, audio remains from computer.

Additionally, using Chrome directly (ughs, I know...) I get the same 
results.

On the other hand, with the office laptop using Windows, both Chromium 
(nightly) and Chrome can share full desktop with audio.


In short: casting from Linux can only send audio from single tab. This 
is of course a problem for applications without native Chromecast 
support, especially with my own laptop having very weak speakers.

Has anyone more recent information[2]? Pointers to hard evidence 
confirming it won't work are also welcome.


Thanks in advance,

Andrea.


[1] chrome://flags/#load-media-router-component-extension

[2] 
https://askubuntu.com/questions/855137/ubuntu-14-04-chromecast-desktop-casting-no-audio

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chromecast: no audio when casting screen, works with tab Andrea Borgia <andrea@borgia.bo.it> - 2020-12-16 23:20 +0100
  Re: chromecast: no audio when casting screen, works with tab Javier Barroso <javibarroso@gmail.com> - 2020-12-17 07:20 +0100
    Re: chromecast: no audio when casting screen, works with tab Andrea Borgia <andrea@borgia.bo.it> - 2020-12-17 10:20 +0100
      Re: chromecast: no audio when casting screen, works with tab Javier Barroso <javibarroso@gmail.com> - 2021-02-13 21:20 +0100

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