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#1 2015-03-21 13:31:16
- PureTryOut
- Member
- Registered: 2014-09-23
- Posts: 64
Surround sound not working on headset
I have the Corsair Vengeance 2000 wireless 7.1 headset for 3 years now.
In Windows I had some driver issues and in Linux I never really bothered and forgot about it.
So this headset supports surround sound, it's even in the product name, but Linux won't output it.
PulseAudio shows the following entries for the headset:
- Digital Output (S/PDIF) Vengeance 2000
- Analog Output Vengeance 2000
Both of these only show the "Balance" slider, and a greyed out/disabled "Fade" and "Subwoofer" channel. When testing, it only shows left and right channels to test.
Alsamixer only shows a "PCM" channel of which I can change volume, but nothing else. From what I understand it should show all 8 channels that come with 7.1 surround.
It also says the chip is "USB Mixer".
pamixer --list-sources
2 "alsa_input.usb-Corsair_Vengeance_2000-00-V2000.analog-mono" "Vengeance 2000 Analog Mono"
10 "alsa_output.usb-Corsair_Vengeance_2000-00-V2000.iec958-stereo.monitor" "Monitor of Vengeance 2000 Digital Stereo (IEC958)"By some Googling I found this, but sadly it didn't help.
So it seems Alsa is not recognizing the headset as 7.1 surround capable. How can I fix this?
EDIT: "sudo lsusb -v" output:
Bus 003 Device 008: ID 1b1c:0a04 Corsair
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x1b1c Corsair
idProduct 0x0a04
bcdDevice 2.00
iManufacturer 3 Corsair
iProduct 4 Vengeance 2000
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 233
bNumInterfaces 4
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 1 Control Device
bInterfaceProtocol 0
iInterface 1 Vengeance 2000
AudioControl Interface Descriptor:
bLength 10
bDescriptorType 36
bDescriptorSubtype 1 (HEADER)
bcdADC 1.00
wTotalLength 71
bInCollection 2
baInterfaceNr( 0) 1
baInterfaceNr( 1) 2
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 32
wTerminalType 0x0201 Microphone
bAssocTerminal 0
bNrChannels 1
wChannelConfig 0x0000
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 4
bSourceID 32
bControlSize 1
bmaControls( 0) 0x03
Mute Control
Volume Control
bmaControls( 1) 0x00
iFeature 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 64
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bSourceID 4
iTerminal 0
AudioControl Interface Descriptor:
bLength 12
bDescriptorType 36
bDescriptorSubtype 2 (INPUT_TERMINAL)
bTerminalID 48
wTerminalType 0x0101 USB Streaming
bAssocTerminal 0
bNrChannels 2
wChannelConfig 0x0003
Left Front (L)
Right Front (R)
iChannelNames 0
iTerminal 0
AudioControl Interface Descriptor:
bLength 10
bDescriptorType 36
bDescriptorSubtype 6 (FEATURE_UNIT)
bUnitID 3
bSourceID 48
bControlSize 1
bmaControls( 0) 0x03
Mute Control
Volume Control
bmaControls( 1) 0x00
bmaControls( 2) 0x00
iFeature 0
AudioControl Interface Descriptor:
bLength 9
bDescriptorType 36
bDescriptorSubtype 3 (OUTPUT_TERMINAL)
bTerminalID 16
wTerminalType 0x0301 Speaker
bAssocTerminal 0
bSourceID 3
iTerminal 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 1
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 64
bDelay 0 frames
wFormatTag 1 PCM
AudioStreaming Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 1
bSubframeSize 2
bBitResolution 16
bSamFreqType 2 Discrete
tSamFreq[ 0] 44100
tSamFreq[ 1] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 13
Transfer Type Isochronous
Synch Type Synchronous
Usage Type Data
wMaxPacketSize 0x0090 1x 144 bytes
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 0
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 1
bNumEndpoints 0
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 2
bAlternateSetting 2
bNumEndpoints 1
bInterfaceClass 1 Audio
bInterfaceSubClass 2 Streaming
bInterfaceProtocol 0
iInterface 0
AudioStreaming Interface Descriptor:
bLength 7
bDescriptorType 36
bDescriptorSubtype 1 (AS_GENERAL)
bTerminalLink 48
bDelay 0 frames
wFormatTag 1 PCM
AudioStreaming Interface Descriptor:
bLength 14
bDescriptorType 36
bDescriptorSubtype 2 (FORMAT_TYPE)
bFormatType 1 (FORMAT_TYPE_I)
bNrChannels 2
bSubframeSize 2
bBitResolution 16
bSamFreqType 2 Discrete
tSamFreq[ 0] 44100
tSamFreq[ 1] 48000
Endpoint Descriptor:
bLength 9
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 13
Transfer Type Isochronous
Synch Type Synchronous
Usage Type Data
wMaxPacketSize 0x0120 1x 288 bytes
bInterval 1
bRefresh 0
bSynchAddress 0
AudioControl Endpoint Descriptor:
bLength 7
bDescriptorType 37
bDescriptorSubtype 1 (EP_GENERAL)
bmAttributes 0x01
Sampling Frequency
bLockDelayUnits 0 Undefined
wLockDelay 0 Undefined
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 3
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 2 HID Interface
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.11
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 362
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x85 EP 5 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 1
can't get debug descriptor: Resource temporarily unavailable
Device Status: 0x0000
(Bus Powered)Last edited by PureTryOut (2015-03-21 13:35:22)
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#2 2015-03-21 22:48:46
- Soukyuu
- Member
- Registered: 2014-04-08
- Posts: 854
Re: Surround sound not working on headset
Most of those "surround" headsets only have two channels, and the "surround" sound is emulated by the driver, which I guess does not have a linux version.
This is probably the reason why you only see a stereo device - it's what it is on the the hardware level. What the linked "solution" does is, it tells pulseaudio to use 8 channels per default and enables remixing both regular channels and LFE. This leads to pulseaudio downmixing the 8 channels to 2 to match the numbers of your speakers. Essentially, this is what the windows driver should be doing, so if it sounds different, it's probably a matter of different implementation/enhancements the dolby driver includes.
Bottom line: you can't have 8 channels on a device which only has 2 channels on the hardware level. This is why I went for a Roccat Kave back then - it has 6 physical speakers, 3 on each side.
[ Arch x86_64 | linux | Framework 13 | AMD Ryzen™ 5 7640U | 32GB RAM | KDE Plasma Wayland ]
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#3 2015-03-22 14:36:01
- PureTryOut
- Member
- Registered: 2014-09-23
- Posts: 64
Re: Surround sound not working on headset
So there is no way to get surround mode working on Linux if Corsair doesn't make a proper driver for it?
Well that means i'm getting a different headset in the future...
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