I have a nvidia geforce 8200 chipset, which (as many win users report)
supports multichannel audio. Alsa support here is only for 48khz stereo (no
44.1 or any other bitrate).
Why? Is it possible to have at least 44.1khz for bitperfect audio?
According to codec 88.2 khz should be available, but it doesn't work
some info:
minibox marco # speaker-test -c 2 -r 88200
speaker-test 1.0.19
Playback device is default
Stream parameters are 88200Hz, S16_LE, 2 channels
Using 16 octaves of pink noise
Rate 88200Hz not available for playback: Invalid argument
Setting of hwparams failed: Invalid argument
minibox marco # lspci -v -s 00:07
00:07.0 Audio device: nVidia Corporation Device 0774 (rev a1)
Subsystem: Jetway Information Co., Ltd. Device 888f
Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 21
Memory at fe020000 (32-bit, non-prefetchable) [size=16K]
Capabilities: [44] Power Management version 2
Capabilities: [50] Message Signalled Interrupts: Mask+ 64bit+ Count=1/1Enable-
Capabilities: [6c] HyperTransport: MSI Mapping Enable+ Fixed+
Kernel driver in use: HDA Intel
Kernel modules: snd-hda-intel
minibox marco # cat /proc/asound/card0/codec#3
Codec: Nvidia MCP78 HDMI
Address: 3
Vendor Id: 0x10de0002
Subsystem Id: 0x10de0101
Revision Id: 0x100000
No Modem Function Group found
Default PCM:
rates [0x0]:
bits [0x0]:
formats [0x0]:
Default Amp-In caps: N/A
Default Amp-Out caps: N/A
GPIO: io=0, o=0, i=0, unsolicited=0, wake=0
Node 0x04 [Audio Output] wcaps 0x211: Stereo Digital
Converter: stream=0, channel=0
Digital:
Digital category: 0x0
PCM:
rates [0xc0]: 48000 88200
bits [0xf]: 8 16 20 24
formats [0x1]: PCM
Node 0x05 [Pin Complex] wcaps 0x400381: Stereo Digital
Pincap 0x00000014: OUT Detect
Pin Default 0x18560110: [Jack] Digital Out at Int HDMI
Conn = Digital, Color = Unknown
DefAssociation = 0x1, Sequence = 0x0
Misc = NO_PRESENCE
Pin-ctls: 0x40: OUT
Unsolicited: tag=00, enabled=0
Connection: 1
0x04
Node 0x06 [Audio Output] wcaps 0x211: Stereo Digital
Converter: stream=0, channel=0
Digital:
Digital category: 0x0
PCM:
rates [0xc0]: 48000 88200
bits [0xf]: 8 16 20 24
formats [0x1]: PCM
Node 0x07 [Pin Complex] wcaps 0x400381: Stereo Digital
Pincap 0x00000014: OUT Detect
Pin Default 0x58560121: [N/A] Digital Out at Int HDMI
Conn = Digital, Color = Unknown
DefAssociation = 0x2, Sequence = 0x1
Misc = NO_PRESENCE
Pin-ctls: 0x00:
Unsolicited: tag=00, enabled=0
Connection: 1
0x06
Node 0x08 [Audio Output] wcaps 0x211: Stereo Digital
Converter: stream=0, channel=0
Digital:
Digital category: 0x0
PCM:
rates [0xc0]: 48000 88200
bits [0xf]: 8 16 20 24
formats [0x1]: PCM
Node 0x09 [Pin Complex] wcaps 0x400381: Stereo Digital
Pincap 0x00000014: OUT Detect
Pin Default 0x58560122: [N/A] Digital Out at Int HDMI
Conn = Digital, Color = Unknown
DefAssociation = 0x2, Sequence = 0x2
Misc = NO_PRESENCE
Pin-ctls: 0x00:
Unsolicited: tag=00, enabled=0
Connection: 1
0x08
Node 0x0a [Audio Output] wcaps 0x211: Stereo Digital
Converter: stream=0, channel=0
Digital:
Digital category: 0x0
PCM:
rates [0xc0]: 48000 88200
bits [0xf]: 8 16 20 24
formats [0x1]: PCM
Node 0x0b [Pin Complex] wcaps 0x400381: Stereo Digital
Pincap 0x00000014: OUT Detect
Pin Default 0x58560123: [N/A] Digital Out at Int HDMI
Conn = Digital, Color = Unknown
DefAssociation = 0x2, Sequence = 0x3
Misc = NO_PRESENCE
Pin-ctls: 0x00:
Unsolicited: tag=00, enabled=0
Connection: 1
0x0a
Node 0x0c [Audio Output] wcaps 0x211: Stereo Digital
Converter: stream=0, channel=0
Digital:
Digital category: 0x0
PCM:
rates [0xc0]: 48000 88200
bits [0xf]: 8 16 20 24
formats [0x1]: PCM
Node 0x0d [Pin Complex] wcaps 0x400381: Stereo Digital
Pincap 0x00000014: OUT Detect
Pin Default 0x58560124: [N/A] Digital Out at Int HDMI
Conn = Digital, Color = Unknown
DefAssociation = 0x2, Sequence = 0x4
Misc = NO_PRESENCE
Pin-ctls: 0x00:
Unsolicited: tag=00, enabled=0
Connection: 1
0x0c
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