[arch-general] HDMI Alsa sound problem from flashplayer 64 bit

Mike Cloaked mike.cloaked at gmail.com
Thu Feb 7 09:33:17 EST 2013

On Thu, Feb 7, 2013 at 9:16 AM, Cédric Girard <girard.cedric at gmail.com>wrote:

> On Wed, Feb 6, 2013 at 7:48 PM, Mike Cloaked wrote:
> > Also I can get sound coming out of the monitor speakers with:
> >
> > aplay -D plughw:0,7 /usr/share/sounds/alsa/Front_Center.wav
> >
> > However if I run chrome and play a flash video the video I can see fine -
> > but there is no sound.
> >
> > I have read all the available arch wiki articles about hdmi sound
> including
> > that at
> >
> >
> https://wiki.archlinux.org/index.php/Advanced_Linux_Sound_Architecture#HDMI_Output_Does_Not_Workbut
> > as soon as I make a ~/.asound file with either of the suggested
> > contents KDE immediately tells me that the hdmi sound for that output has
> > been selected to be removed and offers me to make that permanent!
> >
> I would suggest first to try without KDE on the way.
> The solution provided on the wiki should definitively work. In your case,
> the device number should be 7.
> Once setup, make new tests with speaker-test or aplay, without setting the
> device you want to use (what you try to do is to setup your hdmi device to
> be the default).
> Then, only, add KDE on the top. You will probably need to reconfigure kmix
> as your devices have changed.
> I have already used kmix to select the 0,7 HDMI device and all channels
work as expected in the test from kmix within KDE.  I think the problem
stems from the alsa default going to a different output channel and I could
not fathom out from the wiki how to change alsa to use the correct channel
apart from the suggestion to add a few lines to ~/.asound but when I used
either of the two suggested sets of contents for that file then KDE became
unhappy - so if there is a way to get alsa to default to the hdmi output
channel (0,7) in a different way then that would likely give me a working
solution.  It "should" be possible but I don't know enough about the
intricacies of alsa to know how to do it - and it seems the wiki does not
contain enough info for me to work towards that (or I am too stupid to
understand the wiki!)

I could try pulseaudio - and if I can't get a solution with pure alsa then
I will go that route - I have used pavucontrol in the past to run sound -
but it is still a challenge to solve this within alsa - and it "should"
surely be possible?

mike c

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