alsa issues

Radu Dragomir radu at aom.ro
Fri May 29 09:46:32 UTC 2009


Hello everyone

I am having problems with a Toshiba L30-10X Laptop. 
Everything works fine except the sound system which has 2 problems:

1. Headphones and Speaker channels are swapped 
2. The volume on the "speakers" (well headphones in this case) is very
low. 

The soundcard uses a snd_hda_intel module and the model name is set to
toshiba in /etc/modprobe.d/alsa-base.conf with the following line:

options snd-hda-intel model=toshiba

System is Ubuntu 9.04

Suplimental info:


00:14.2 Audio device: ATI Technologies Inc IXP SB4x0 High Definition
Audio Controller (rev 01)
        Subsystem: Toshiba America Info Systems Device ff31
        Flags: bus master, slow devsel, latency 64, IRQ 16
        Memory at c0000000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: [50] Power Management version 2
        Capabilities: [60] Message Signalled Interrupts: Mask- 64bit+
Queue=0/0 Enable-
        Kernel driver in use: HDA Intel
        Kernel modules: snd-hda-intel

 

 

amixer output

Simple mixer control 'Master',0
  Capabilities: pswitch pswitch-joined
  Playback channels: Mono
  Mono: Playback [on]
Simple mixer control 'Headphone',0
  Capabilities: pswitch
  Playback channels: Front Left - Front Right
  Mono:
  Front Left: Playback [on]
  Front Right: Playback [on]
Simple mixer control 'PCM',0
  Capabilities: pvolume
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 255
  Mono:
  Front Left: Playback 255 [100%]
  Front Right: Playback 255 [100%]
Simple mixer control 'Front',0
  Capabilities: pswitch
  Playback channels: Front Left - Front Right
  Mono:
  Front Left: Playback [on]
  Front Right: Playback [on]
Simple mixer control 'Mic',0
  Capabilities: pvolume pswitch
  Playback channels: Front Left - Front Right
  Limits: Playback 0 - 23
  Mono:
  Front Left: Playback 0 [0%] [-36.00dB] [off]
  Front Right: Playback 0 [0%] [-36.00dB] [off]
Simple mixer control 'Capture',0
  Capabilities: cvolume cswitch
  Capture channels: Front Left - Front Right
  Limits: Capture 0 - 13
  Front Left: Capture 0 [0%] [-6.00dB] [on]
  Front Right: Capture 0 [0%] [-6.00dB] [on]
Simple mixer control 'Input Source',0
  Capabilities: cenum
  Items: 'Mic'
  Item0: 'Mic'

 cat /proc/asound/cards
 0 [SB             ]: HDA-Intel - HDA ATI SB
                      HDA ATI SB at 0xc0000000 irq 16

 

 

alsa info
http://www.alsa-project.org/db/?f=abf7f754f6b4dabc25077171234e72a46449be2a



Thank you for help





More information about the ubuntu-users mailing list