[mythtv-users] Audio issues - New Install

[Ashu Desai]

I have a brand new install on CentOS 7.

Backend is a VM and FE is on Zotac Ion

When I open Alsammixer, i get the default one

http://tinypic.com/r/2eldu9s/9

I then press F6 and select the NVidia card

http://tinypic.com/r/rli9ty/9

However, if I press escape and go right back to alsamixer, it reverts it
back to the original one.

lspci -vvnn reveals this for Audio:

00:08.0 Audio device [0403]: NVIDIA Corporation MCP79 High Definition Audio
[10de:0ac0] (rev b1)
        Subsystem: PC Partner Limited / Sapphire Technology Device
[174b:437b]
        Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0 (500ns min, 1250ns max)
        Interrupt: pin A routed to IRQ 22
        Region 0: Memory at fae78000 (32-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: snd_hda_intel
        Kernel modules: snd_hda_intel


[mythtv at mythfe7 ~]$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: NVidia [HDA NVidia], device 0: ALC662 rev1 Analog [ALC662 rev1
Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 1: ALC662 rev1 Digital [ALC662 rev1
Digital]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 0: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

[mythtv at mythfe7 ~]$ aplay -L
null
    Discard all samples (playback) or generate zero samples (capture)
pulse
    PulseAudio Sound Server
sysdefault:CARD=NVidia
    HDA NVidia, ALC662 rev1 Analog
    Default Audio Device
front:CARD=NVidia,DEV=0
    HDA NVidia, ALC662 rev1 Analog
    Front speakers
surround21:CARD=NVidia,DEV=0
    HDA NVidia, ALC662 rev1 Analog
    2.1 Surround output to Front and Subwoofer speakers
surround40:CARD=NVidia,DEV=0
    HDA NVidia, ALC662 rev1 Analog
    4.0 Surround output to Front and Rear speakers
surround41:CARD=NVidia,DEV=0
    HDA NVidia, ALC662 rev1 Analog
    4.1 Surround output to Front, Rear and Subwoofer speakers
surround50:CARD=NVidia,DEV=0
    HDA NVidia, ALC662 rev1 Analog
    5.0 Surround output to Front, Center and Rear speakers
surround51:CARD=NVidia,DEV=0
    HDA NVidia, ALC662 rev1 Analog
    5.1 Surround output to Front, Center, Rear and Subwoofer speakers
surround71:CARD=NVidia,DEV=0
    HDA NVidia, ALC662 rev1 Analog
    7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
iec958:CARD=NVidia,DEV=0
    HDA NVidia, ALC662 rev1 Digital
    IEC958 (S/PDIF) Digital Audio Output
hdmi:CARD=NVidia,DEV=0
    HDA NVidia, HDMI 0
    HDMI Audio Output


Here's my /etc/asound.conf

# Place your global alsa-lib configuration here...
#
pcm.!default {
       type hw
       card 0
       device 3
   }
~
~

Under Mythfrontend Setup/Audio
I have selected the ALSA:hdmi:Card=NVIDIA:DEV=0 that comes as option

When you do "Test" - everything comes ok except sound for Center (Comes off
Surround Left) & Surround Left (swapped to Center)

I also can't hear audio off quite a few movies, and when I check my audio
receiver shows input as PCM. The ones that have AC3 or DTS comes out fine
(although the sound coming off wrong speakers irks me)

I am not hearing any TrueHD even though that is checked along with HBR box
that's checked by default

I am giving data that I feel is needed so apologies if it's too much or too
little.
.

I am also hoping alsamixer can change default from PulseAudio to HDMI
I can def give any other info that's required to solve this
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