5.1 surround sound with NVidia4

[Ivan Glushkov]

Hi all,

I have working sound system, but I hear only two out of my 5.1 channels.
Any idea how to make them all working? Any links related to the topic
are also welcome. I googled around, but I couldn't find a solution. I
hear sound from the front left, right and subwoofer speakers during mp3
playing with Rhythmbox, and I am able to hear sound from the backward
speakers only by unmuting "Duplicate" in alsamixer, but that's not what
I want. I never managed to hear a sound from the center speaker.

I have a NVidia4 chipset based board with a Realtek ALC850 8-channel
codec on it.
I have debian lenny/sid 2.6.24-1-amd64 SMP with:

lspci -v:
    00:0d.0 Multimedia audio controller: nVidia Corporation CK804 AC'97
Audio Controller (rev a2)
    Subsystem: ASUSTeK Computer Inc. Device 812a
    Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 22
    I/O ports at b400 [size=256]
    I/O ports at b000 [size=256]
    Memory at d7dfd000 (32-bit, non-prefetchable) [size=4K]
    Capabilities: [44] Power Management version 2
    Kernel driver in use: Intel ICH
    Kernel modules: snd-intel8x0

lsmod | grep snd:
    snd_mpu401             13992  0
    snd_mpu401_uart        13440  1 snd_mpu401
    snd_seq_dummy           8580  0
    snd_seq_oss            36736  0
    snd_intel8x0           41000  3
    snd_seq_midi           13376  0
    snd_seq_midi_event     12544  2 snd_seq_oss,snd_seq_midi
    snd_ac97_codec        118232  1 snd_intel8x0
    snd_seq                58752  6
snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
    ac97_bus                6912  1 snd_ac97_codec
    snd_pcm_oss            46624  0
    snd_mixer_oss          21376  1 snd_pcm_oss
    snd_rawmidi            30624  2 snd_mpu401_uart,snd_seq_midi
    snd_pcm                89352  4 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
    snd_seq_device         12948  5
snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq,snd_rawmidi
    snd_timer              28552  3 snd_seq,snd_pcm
    snd                    65896  16    
snd_mpu401,snd_mpu401_uart,snd_seq_oss,snd_intel8x0,snd_ac97_codec,snd_seq,snd_pcm_oss,snd_mixer_oss,snd_rawmidi,snd_pcm,snd_seq_device,snd_timer
    soundcore              13216  1 snd
    snd_page_alloc         15248  2 snd_intel8x0,snd_pcm

cat /proc/asound/cards
 0 [CK804          ]: NFORCE - NVidia CK804
                      NVidia CK804 with ALC850 at irq 22
 1 [UART           ]: MPU-401 UART - MPU-401 UART
                      MPU-401 UART at 0x330, irq 5

    Cheers,
    Ivan


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[chmick]

Hello Ian

I have a similar sound chip on a GAK8N gygabite motherboard .
With my previous debian (etch) I succeeded to make it work with 5 speakers.

In gnome start the volume control manager , then go to file --> change device --> select ck804

then go in open the volume control preference (edit --> preferences)

select all options like surround, channel mode , duplicate front (see the screenshot)

then in the volume control panel select the option tab and set up speakers numbers and other things. (i'm still trying to understand surround jack mode)


this should work (if it's the case can you mark this thread as resolved for others ) ?

Can you help me with something ?? Since i upgraded to lenny I have no sound anymore and I can't find why ? can you send me your settings and your hardware type ?

Thanks

Ivan Glushkov wrote:

Hi all,

I have working sound system, but I hear only two out of my 5.1 channels.
Any idea how to make them all working? Any links related to the topic
are also welcome. I googled around, but I couldn't find a solution. I
hear sound from the front left, right and subwoofer speakers during mp3
playing with Rhythmbox, and I am able to hear sound from the backward
speakers only by unmuting "Duplicate" in alsamixer, but that's not what
I want. I never managed to hear a sound from the center speaker.

I have a NVidia4 chipset based board with a Realtek ALC850 8-channel
codec on it.
I have debian lenny/sid 2.6.24-1-amd64 SMP with:

lspci -v:
    00:0d.0 Multimedia audio controller: nVidia Corporation CK804 AC'97
Audio Controller (rev a2)
    Subsystem: ASUSTeK Computer Inc. Device 812a
    Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 22
    I/O ports at b400 [size=256]
    I/O ports at b000 [size=256]
    Memory at d7dfd000 (32-bit, non-prefetchable) [size=4K]
    Capabilities: [44] Power Management version 2
    Kernel driver in use: Intel ICH
    Kernel modules: snd-intel8x0

lsmod | grep snd:
    snd_mpu401             13992  0
    snd_mpu401_uart        13440  1 snd_mpu401
    snd_seq_dummy           8580  0
    snd_seq_oss            36736  0
    snd_intel8x0           41000  3
    snd_seq_midi           13376  0
    snd_seq_midi_event     12544  2 snd_seq_oss,snd_seq_midi
    snd_ac97_codec        118232  1 snd_intel8x0
    snd_seq                58752  6
snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
    ac97_bus                6912  1 snd_ac97_codec
    snd_pcm_oss            46624  0
    snd_mixer_oss          21376  1 snd_pcm_oss
    snd_rawmidi            30624  2 snd_mpu401_uart,snd_seq_midi
    snd_pcm                89352  4 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
    snd_seq_device         12948  5
snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq,snd_rawmidi
    snd_timer              28552  3 snd_seq,snd_pcm
    snd                    65896  16    
snd_mpu401,snd_mpu401_uart,snd_seq_oss,snd_intel8x0,snd_ac97_codec,snd_seq,snd_pcm_oss,snd_mixer_oss,snd_rawmidi,snd_pcm,snd_seq_device,snd_timer
    soundcore              13216  1 snd
    snd_page_alloc         15248  2 snd_intel8x0,snd_pcm

cat /proc/asound/cards
 0 [CK804          ]: NFORCE - NVidia CK804
                      NVidia CK804 with ALC850 at irq 22
 1 [UART           ]: MPU-401 UART - MPU-401 UART
                      MPU-401 UART at 0x330, irq 5

    Cheers,
    Ivan


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