
Originally Posted by
ioask4it
From that script, its pretty clear:
Simple mixer control 'Speaker',0
Capabilities: pvolume pswitch pswitch-joined penum
Playback channels: Front Left - Front Right - Rear Left - Rear Right - Front Center - Woofer - Side Left - Side Right
Limits: Playback 0 - 197
Mono:
Front Left: Playback 35 [18%] [-30.37dB] [on]
Front Right: Playback 35 [18%] [-30.37dB] [on]
Rear Left: Playback 0 [0%] [-36.93dB] [on]
Rear Right: Playback 0 [0%] [-36.93dB] [on]
Front Center: Playback 0 [0%] [-36.93dB] [on]
Woofer: Playback 0 [0%] [-36.93dB] [on]
Side Left: Playback 0 [0%] [-36.93dB] [on]
Side Right: Playback 0 [0%] [-36.93dB] [on]
You have all the 5.1 speakers muted at 0%. Muted means no sound. That 'may' be relevant. Why NOT use your mixer to move the volume up ?
I don't know much about 5.1 surround sound, but I documented my experience here: Exploring surround sound in Linux - openSUSE Forums

Originally Posted by
ioask4it
1. I used "Alsa-update - openSUSE" link and I updated only the selected software from that
picture because I thought that only those must be updated.
I wrote that guide, and I confess to being a bit frustrated, because most of the time I simply can not get users to install alsa completely. Note I wrote in the guide:
and then select for update
all of your PC's alsa applications, including "libasound2". Do not add new alsa applications, just
update your existing ones. See the
example on the left.
ie ... update "all of PC's alsa apps", ... and an 'example' is just an 'example', ... its not hard fast instructions because everyone has different alsa apps installed.
How do I fix this guide so that the sort of approach you made is not repeated?
Sometimes I feel like just deleting the update alsa article because it fails far too often ... anyway ...thats my frustrations
and we are here to solve your problem (and not mine). 

Originally Posted by
ioask4it
when I start X, when it plays the welcome sound i get this message
"The audio playback device PnP Audio Device (USB Audio) does not work. Falling back to PulseAudio"
Thats a bug in KDE and likely not relevant nor harmful.

Originally Posted by
ioask4it
... any suggestions?

I provided instructions above on raising a bug report.
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