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Groups > alt.comp.os.windows-11 > #17020

Re: Monitor Has Audio?

From Paul <nospam@needed.invalid>
Newsgroups alt.comp.os.windows-11
Subject Re: Monitor Has Audio?
Date 2025-02-12 20:51 -0500
Organization A noiseless patient Spider
Message-ID <vojj72$2jnhv$1@dont-email.me> (permalink)
References <XnsB280D32861D2Anospaminvalidcom@135.181.20.170> <m0r65sFsnrU1@mid.individual.net>

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On Sun, 2/9/2025 3:09 AM, Andy Burns wrote:
> Boris wrote:
> 
>> Why does my System>Sound>Properties show that my LG E2742 monitor has audio
>> capabilities, when clearly it does not?
> 
> It doesn't have internal speakers, but it has HDMI in and headphone socket out ... so it is an audio target.
> 

The HDMI is not a full PNP (Plug and Play) subsystem.

It tends to be unidirectional.

The status or existence of any audio sink on the
monitor end is unknown.

The OS knows whether a bus termination has been plugged
to an HDMI (or DP or VGA) connector. It can then route
a video signal to the load, knowing that it's not creating
RF emissions by the cable end being open.

But audio carriage on the cable, there is no mechanism I'm aware
of, which commonly can talk back and relay information about
whether there are speakers or an audio sink. That's more or less
best effort (works, if you have speakers, otherwise the bytes
go into the bucket).

Since there are hardly any questions about Dolby, I would
guess that most people consume movie content, with 7.1 LPCM
as the audio track, rather than Dolby flavors of coding.

   Paul

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Thread

Monitor Has Audio? Boris <nospam@invalid.com> - 2025-02-09 04:45 +0000
  Re: Monitor Has Audio? User <user@mytechsite.gq> - 2025-02-09 05:30 +0000
    Re: Monitor Has Audio? Paul in Houston TX <Paul@Houston.Texas> - 2025-02-08 23:55 -0600
      Re: Monitor Has Audio? Boris <nospam@invalid.com> - 2025-02-09 06:50 +0000
    Re: Monitor Has Audio? Boris <nospam@invalid.com> - 2025-02-09 06:48 +0000
  Re: Monitor Has Audio? Andy Burns <usenet@andyburns.uk> - 2025-02-09 08:09 +0000
    Re: Monitor Has Audio? Paul <nospam@needed.invalid> - 2025-02-12 20:51 -0500
  Re: Monitor Has Audio? Colour Sergeant Bourne <bourne@rorke.za> - 2025-02-12 11:34 -0500

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