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I've an Nvidia RTX 2060(but i've been trying since my GTX 950..probably a couple years now...) with 2x 40in LED widesreen TVs attached with audio via HDMI output...i can use one TV or the other as the audio output(ergo HDMI1). I also have HDMI2 and HDMI3 available as ouput via HDMI and DisplayPort, respectively.
I have been unable to find a way to utilize HDMI1 and HDMI2 as simultaneous audio output. All I seem to be able to find is how to use simultaneous audio devices, instead of simultaneous output channels.
anyone know if simultaneous output channels are possible?
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if you do you should be able to make it happen.
I'm not sure what audio subsystem KDE uses - if it's pulse audio then it's relatively simple;
https://www.maketecheasier.com/play-sound-through-multiple-devices-linux/
if it's ALSA then your going to have to mess around with JACK routing http://www.jackaudio.org/, which while super powerfull is a little tough to set up ( or atleast it was when I last used it, which granted is quite a few years ago )
What do you mean by "simultaneous channels" instead of "simultaneous devices"?
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simultaneous devices consists of HDMI + an Audio Processor such as an onboard DSP(Intel HD Audio, Realtek ALC chipsets, etc).
by simultaneous channels, I mean HDMI1 + HDMI2..
I can choose TV1's audio as an output channel, or i can choose TV2's audio as an ouput channel, but am unable to find a way to pipe audio to both TV1 and TV2 at the same time via the Nvidia card's HDMI audio processor.
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missed your reply yesterday evening...anyway...
kubuntu uses pulseaudio....the link you have provided for paprefs has already been tried by yours truly...it is for "simultaneous devices"....i'm only wanting to use a single device(Nvidia hdmi audio processor) but output to multiple channels, ergo HDMI1+HDMI2.
yes the second TV outputs audio if i select that as an output channel....what i am trying to achieve is audio through BOTH TVs simultaneously...as it stands i can only choose TV1 OR TV2(HDMI1 or HDMI2), not both channels combined.....
as ehvis stated above, it's a bit like having a single audio device with a line out and a headphones output on the single device and routing audio through both the line out channel and the headphones channel at the same time(in case you wanted to add a second set of speakers via headphones channel).
as far as jack goes, it really hasn't changed much probably since you tried it some few years ago.....it's still a rather complicated piece of software to fiddle with unless you're a sound engineer, which i am not.
just thought maybe someone hear might have tried something similar in the past and could provide me some insight into how i might go about achieving what i hope to be able to do....
PS: the TVs are attached to a single Nvidia 2060 in a dual-head configuration....websurfing and video games on the left primary display....movie/TV show streaming on the right secondary display...
I haven't checked it in depth, but it looks like this page could have a solution to your problem. It is a bit of manual fiddling though. It's the second half of the page, the first half if for separated cards.
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that's looks to be what i need to try :). thanx for that :). no time to fiddle with it til later, as i have to get ready for work in a bit.....if i'm not too tired this evning after work i might give it a go...otherwise, as soon as i have time to mess with it, i'll report back if it was a success or not.