PCM mixer too high / distortion - HDA Intel: Conexant CX20551 (Waikiki)

Bug #633317 reported by Chris Wyatt on 2010-09-08
8
This bug affects 1 person
Affects Status Importance Assigned to Milestone
alsa-driver (Ubuntu)
Undecided
Daniel T Chen

Bug Description

Whenever I adjust the audio from the indicator applet PCM shoots up to between 98% and 100%, this causes distortion.

As a workaround I always set it to about 95% and adjust the master volume using 'alsamixer'.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: libasound2 1.0.23-1ubuntu1
ProcVersionSignature: Ubuntu 2.6.35-20.29-generic 2.6.35.4
Uname: Linux 2.6.35-20-generic i686
NonfreeKernelModules: hsfengine nvidia
Architecture: i386
Date: Wed Sep 8 17:01:42 2010
ProcEnviron:
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-lib
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: chrisw 3129 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xd6400000 irq 45'
   Mixer name : 'Conexant CX20551 (Waikiki)'
   Components : 'HDA:14f15047,103c30b2,00100000'
   Controls : 18
   Simple ctrls : 10
DistroRelease: Ubuntu 10.10
NonfreeKernelModules: hsfengine nvidia
Package: alsa-driver (not installed)
ProcEnviron:
 PATH=(custom, user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.35-20.29-generic 2.6.35.4
Tags: maverick
Uname: Linux 2.6.35-20-generic i686
UserGroups: adm admin cdrom clamav dialout lpadmin mysql mythtv plugdev sambashare
dmi.bios.date: 03/28/2007
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: F.25
dmi.board.name: 30B3
dmi.board.vendor: Wistron
dmi.board.version: 61.58
dmi.chassis.type: 10
dmi.chassis.vendor: Wistron
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnHewlett-Packard:bvrF.25:bd03/28/2007:svnHewlett-Packard:pnHPPaviliondv2000(RD651EA#ABU):pvrF.25:rvnWistron:rn30B3:rvr61.58:cvnWistron:ct10:cvrN/A:
dmi.product.name: HP Pavilion dv2000 (RD651EA#ABU)
dmi.product.version: F.25
dmi.sys.vendor: Hewlett-Packard

Chris Wyatt (wyattmeister) wrote :
Daniel T Chen (crimsun) wrote :

Please use apport-collect 633317

affects: alsa-lib (Ubuntu) → alsa-driver (Ubuntu)
Changed in alsa-driver (Ubuntu):
status: New → Incomplete

apport information

tags: added: apport-collected
description: updated

apport information

apport information

apport information

apport information

apport information

apport information

apport information

Daniel T Chen (crimsun) wrote :

Needs 0 dB cap for node 0x10:

Amp-Out caps: ofs=0x17, nsteps=0x1e, stepsize=0x05, mute=1

Changed in alsa-driver (Ubuntu):
assignee: nobody → Daniel T Chen (crimsun)
status: Incomplete → Triaged
Daniel T Chen (crimsun) wrote :

There is an existing amp override for 0x10, but the one for 0x1c is missing.

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