Upstream produces the effect of playing through both the headphones and
speakers at the same time, but I'm also having this issue in Gentoo, so...

On Tue, Sep 14, 2010 at 9:17 AM, David Henningsson <
<email address hidden>> wrote:

> You have hardware not in the Conexant model register. Please try updating
> your alsa drivers, as outlined here:
> https://wiki.ubuntu.com/Audio/InstallingLinuxAlsaDriverModules. Please
> report back as to whether this solves your issue.
>
> --
> [ATI SBx00 Azalia]Sound refuses to play through headphone jack.
> https://bugs.launchpad.net/bugs/637040
> You received this bug notification because you are a direct subscriber
> of the bug.
>
> Status in “alsa-driver” package in Ubuntu: New
>
> Bug description:
> Audio device: ATI Technologies Inc SBx00 Azalia (Intel HDA) (rev 40) [from
> lspci]
> Ubuntu 10.10 Beta1 AMD64 live cd.
>
> ProblemType: Bug
> DistroRelease: Ubuntu 10.10
> Package: alsa-base 1.0.23+dfsg-1ubuntu2
> ProcVersionSignature: Ubuntu 2.6.35-19.28-generic 2.6.35.3
> Uname: Linux 2.6.35-19-generic x86_64
> AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
> Architecture: amd64
> ArecordDevices:
>  **** List of CAPTURE Hardware Devices ****
>  card 0: SB [HDA ATI SB], device 0: CONEXANT Analog [CONEXANT Analog]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> AudioDevicesInUse:
>  Cannot stat file /proc/3331/fd/43: Stale NFS file handle
>                      USER        PID ACCESS COMMAND
>  /dev/snd/controlC0:  ubuntu     3329 F.... pulseaudio
> Card0.Amixer.info:
>  Card hw:0 'SB'/'HDA ATI SB at 0xd0400000 irq 16'
>   Mixer name   : 'Conexant CX20585'
>   Components   : 'HDA:14f15069,1025043d,00100302'
>   Controls      : 12
>   Simple ctrls  : 10
> Card1.Amixer.info:
>  Card hw:1 'HDMI'/'HDA ATI HDMI at 0xd0110000 irq 19'
>   Mixer name   : 'ATI RS690/780 HDMI'
>   Components   : 'HDA:1002791a,00791a00,00100000'
>   Controls      : 4
>   Simple ctrls  : 1
> Card1.Amixer.values:
>  Simple mixer control 'IEC958',0
>   Capabilities: pswitch pswitch-joined penum
>   Playback channels: Mono
>   Mono: Playback [off]
> CheckboxCommand: gst_pipeline_test -t 2 'audiotestsrc wave=sine freq=512 !
> audioconvert ! audioresample ! gconfaudiosink'
> CheckboxData: Sound plays through normal speakers, not through headphones.
> CheckboxDescription:
>  Please connect a pair of headphones to your audio device.
>
>  Click the Test button to play a sound on the automatically detected
> playback device.
>
>  Do you hear a sound through the headphones?
> CheckboxTest: playback_headphones
> Date: Mon Sep 13 12:11:31 2010
> LiveMediaBuild: Ubuntu 10.10 "Maverick Meerkat" - Beta amd64 (20100901.1)
> PackageArchitecture: all
> ProcEnviron:
>  SHELL=/bin/bash
>  LANG=en_US.UTF-8
> SourcePackage: alsa-driver
> dmi.bios.date: 04/15/2010
> dmi.bios.vendor: Phoenix Technologies LTD
> dmi.bios.version: V1.01
> dmi.board.name: JV01-NL
> dmi.board.vendor: Acer
> dmi.board.version: Not Applicable
> dmi.chassis.type: 10
> dmi.chassis.vendor: Acer
> dmi.chassis.version: N/A
> dmi.modalias:
> dmi:bvnPhoenixTechnologiesLTD:bvrV1.01:bd04/15/2010:svnAcer:pnAO521:pvrNotApplicable:rvnAcer:rnJV01-NL:rvrNotApplicable:cvnAcer:ct10:cvrN/A:
> dmi.product.name: AO521
> dmi.product.version: Not Applicable
> dmi.sys.vendor: Acer
>
> To unsubscribe from this bug, go to:
>
> https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/637040/+subscribe
>