[Bug 319839] Re: USB Sound Card, Only One Channel

[dysonsphere]

Yes, I was getting stereo in Windows.  The problem has since go away though,
sorry not to update the bug report.  I dont know what did the trick, a
general update or my messing around with pulse audio.

On Fri, Sep 4, 2009 at 10:49 AM, Endolith <endolith at gmail.com> wrote:

> Do you get stereo output in Windows or another OS?
>
> --
> USB Sound Card, Only One Channel
> https://bugs.launchpad.net/bugs/319839
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in “libao-pulse” package in Ubuntu: New
>
> Bug description:
> Hello,
>
> I have a Dell laptop with a broken audio out port, so can't get sound
> through speakers or headphones. As a work-around I purchased a USB audio
> adapter.
>
> It works, but only on one channel, the left. Both stereo channels go
> through the left so there is no loss of sound.
>
> I have set the usb card to be the default in pulseaudio and can see the
> sound in both channels in the volume meter. When I start pulseaudio in the
> terminal it gives the following messages:
>
> W: main.c: setrlimit(RLIMIT_NICE, (31, 31)) failed: Operation not permitted
> ALSA lib control.c:909snd_ctl_open_noupdate) Invalid CTL front:0
> ALSA lib control.c:909snd_ctl_open_noupdate) Invalid CTL front:0
> ALSA lib control.c:909snd_ctl_open_noupdate) Invalid CTL front:1
> W: alsa-util.c: Cannot find fallback mixer control "PCM".
> W: alsa-util.c: Device hw:1 doesn't support 2 channels, changed to 1.
>
> Funny thing is that it worked randomly one day while I was playing Spore in
> WINE, and once while playing a dvd in vlc. But I haven't been able to
> reproduce that.
>
> The USB card is a virtual 7.1. with the following specs:
>
> The USB Vitrual 7.1CH Sound Card is highly flexible audio interface which
> can be used either with Desktop or Notebook systems. Bundled with Xear 3D
> Sound simulation software, it turns your stereo speaker or earphones into
> 7.1 channel environment. No drivers required, just plug and play or instant
> audio playback, also compatible with all major operation systems.
>
> 1. USB 2.0 Full-Speed (12Mbps), USB audio device compliant
> 2. USB Bus powered, no external power needed
> 3. Connectors: USB Type-A, Stereo output jack,Microphone-input jack
> 4. Functional keys: Microphone-Mute Status, Volume up/Volume down control
> 5. Red & green status indicator lights
> 6. Mute control
> 7. Include Xear 3D, the virtual 7.1 channel sound simulation software for
> Windows XP/Vista
> 8. Driver not required for Windows 98SE/ME/2000/XP/Vista, Linux, Mas OS
> 9. Excellent Chipset: CM119 of C-Media
> 10. Light weight: 15g
> 11. Slim size: 58x25x13mm
>
>
> sudo asoundconf list gives:
>
> Names of available sound cards:
> ICH6
> default
>
> aplay -L gives:
>
> front:CARD=ICH6,DEV=0
> Intel ICH6, Intel ICH6
> Front speakers
> surround40:CARD=ICH6,DEV=0
> Intel ICH6, Intel ICH6
> 4.0 Surround output to Front and Rear speakers
> surround41:CARD=ICH6,DEV=0
> Intel ICH6, Intel ICH6
> 4.1 Surround output to Front, Rear and Subwoofer speakers
> surround50:CARD=ICH6,DEV=0
> Intel ICH6, Intel ICH6
> 5.0 Surround output to Front, Center and Rear speakers
> surround51:CARD=ICH6,DEV=0
> Intel ICH6, Intel ICH6
> 5.1 Surround output to Front, Center, Rear and Subwoofer speakers
> null
> Discard all samples (playback) or generate zero samples (capture)
> front:CARD=default,DEV=0
> C-Media USB Audio Device , USB Audio
> Front speakers
> surround40:CARD=default,DEV=0
> C-Media USB Audio Device , USB Audio
> 4.0 Surround output to Front and Rear speakers
> surround41:CARD=default,DEV=0
> C-Media USB Audio Device , USB Audio
> 4.1 Surround output to Front, Rear and Subwoofer speakers
> surround50:CARD=default,DEV=0
> C-Media USB Audio Device , USB Audio
> 5.0 Surround output to Front, Center and Rear speakers
> surround51:CARD=default,DEV=0
> C-Media USB Audio Device , USB Audio
> 5.1 Surround output to Front, Center, Rear and Subwoofer speakers
> surround71:CARD=default,DEV=0
> C-Media USB Audio Device , USB Audio
> 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers
> iec958:CARD=default,DEV=0
> C-Media USB Audio Device , USB Audio
> IEC958 (S/PDIF) Digital Audio Output
>
>
> I am running Ubuntu 8.04.
>
> Thanks
>


-- 
Kenneth Stephen Dyson PhD (Candidate)
Department of Kinesiology, University of Waterloo

http://sites.google.com/site/dysonsphere23/

-- 
USB Sound Card, Only One Channel
https://bugs.launchpad.net/bugs/319839
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