On 03/28/2017 08:53 PM, ken wrote:
The www has failed me with this, so I'm trying you guys. Sound worked
great out of the box when I installed 7.2... Yay! I could watch all
kinds of videos, like on facebook and youtube. And I could listen to
most podcasts too. But then something happened. It was either a
kernel upgrade or that I installed vlc (for watching videos on DVD)
and the whole stack of codecs for it... I don't know exactly when, but
at some point I no longer had sound with youtube and other web
videos. The videos played fine, just no sound. Note that using vlc,
both video and the audio with it play just fine. I need to select the
audio driver (from a list in a vlc menu), however, else the sound
won't work in vlc either.
If I go into the Applications menu, then System Tools -> Settings ->
Sound, under "Choose a device for sound output:" there are no devices
listed. There used to be.
If I run "aplayer file.wav", nothing plays (no sound at all) and I get
the error "main:786: audio open error: No such file or directory".
If, on the other hand, I run "aplay file.wav -D plughw:0" (i.e.,
specify the/a device), I do get sound, the file does play.
I ran alsa-info.sh and it posted tons of info from it on my setup at
http://www.alsa-project.org/db/?f=1dba91886be054df4816000768a0f5b109947a48.
Yet it still doesn't tell me what's missing.
Anyone here have an idea...? or thoughts about where to look next?
tia,
ken
Still poking around my system for a solution, I found this comment at
the top of /usr/lib/systemd/system/alsa-state.service and two other
files in the same directory:
# Note that two different ALSA card state management schemes exist and
they
# can be switched using a file exist check - /etc/alsa/state-daemon.conf .
The /etc/alsa/state-daemon.conf file consists of one line:
# Remove this file to disable the alsactl daemon mode
I understand that a daemon continually runs, waiting for an event and
then acts in some way in response, but it has to mean something more in
this context. Anyone familiar with the internals of this?
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