[9.10] macbook 2.1 sound jack outputs one channel only

Please use apport-collect -p alsa-base 484576

Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: ubuntu 4207 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0x50440000 irq 22'
   Mixer name : 'SigmaTel STAC9221 A1'
   Components : 'HDA:83847680,106b2200,00103601'
   Controls : 21
   Simple ctrls : 13
DistroRelease: Ubuntu 9.10
LiveMediaBuild: Ubuntu 9.10 "Karmic Koala" - Release i386 (20091028.5)
Package: alsa-base 1.0.20+dfsg-1ubuntu5
PackageArchitecture: all
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_US.UTF-8
ProcVersionSignature: Ubuntu 2.6.31-14.48-generic
Uname: Linux 2.6.31-14-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
XsessionErrors:
 (gnome-settings-daemon:4367): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (gnome-settings-daemon:4367): GLib-CRITICAL **: g_propagate_error: assertion `src != NULL' failed
 (nautilus:4475): Eel-CRITICAL **: eel_preferences_get_boolean: assertion `preferences_is_initialized ()' failed
 (polkit-gnome-authentication-agent-1:4492): GLib-CRITICAL **: g_once_init_leave: assertion `initialization_value != 0' failed
 (gnome-panel:4472): Gdk-CRITICAL **: gdk_x11_colormap_foreign_new: assertion `GDK_IS_VISUAL (visual)' failed

See:

Simple mixer control 'IEC958',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]

Mute this.

Just tried it, no change

It is worth noting that if I take out the headphones both internal speakers work, although I still need to add -c2 to speaker test in order to get both channels tested. The same headphones work fine in mac OS

On Wed, Nov 18, 2009 at 9:53 AM, sdistefano <email address hidden> wrote:
> speakers work, although I still need to add -c2 to speaker test in order
> to get both channels tested. The same headphones work fine in mac OS

Well, yes, that's the designed behavior of speaker-test.

Same behavior, but I'm running Intrepid on my Macbook2,1.

I should add that it definitely did work until sometime in November (I've been upgrading packages only every week or so, however).

Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/pcmC0D0p: aidas 1604 F...m pulseaudio
 /dev/snd/controlC0: aidas 1604 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0x50440000 irq 22'
   Mixer name : 'SigmaTel STAC9221 A1'
   Components : 'HDA:83847680,106b2200,00103401'
   Controls : 21
   Simple ctrls : 13
DistroRelease: Ubuntu 9.10
InstallationMedia: Ubuntu 9.10 "Karmic Koala" - Release amd64 (20091027)
Package: alsa-base 1.0.20+dfsg-1ubuntu5
PackageArchitecture: all
ProcEnviron:
 SHELL=/bin/bash
 LANG=en_US.UTF-8
ProcVersionSignature: Ubuntu 2.6.31-16.53-generic
Uname: Linux 2.6.31-16-generic x86_64
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare

Hi sdistefano,

Please, if you are still having issues, test with the latest development release of Ubuntu. ISO CD images are available from http://cdimage.ubuntu.com/releases/ .

If it remains an issue, could you run the following command from a Terminal (Applications->Accessories->Terminal). It will automatically gather and attach updated debug information to this report.

apport-collect -p alsa-base 484576

Also, if you could test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds .

Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text.

Please let us know your results.

    [This is an automated message. Apologies if it has reached you inappropriately; please just reply to this message indicating so.]

Ubuntu 9.10 (karmic) reached end-of-life on April 30, 2011
Bug report did not expire due to another bug task
No reply to request for information in comment #28
No comments from anyone else affected for nearly 9 years
Marking "Invalid" to close