I have a Thinkpad with internal speakers plus a MD-PORT AN1 USB HID based audio card. If I set the USB port as the output then Rhythmbox and the volume control work correctly and control the USB output.
If I suspend and resume, then Rhythmbox will continue to use the USB device. The volume control however seems to revert to the internal speakers.
Effect is music coming out but the volume control does nothing. Re-setting the output via the Sound control panel fixes the problem.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: alsa-base 1.0.25+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-17.27-generic 3.2.6
Uname: Linux 3.2.0-17-generic x86_64
NonfreeKernelModules: fglrx
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 1.93-0ubuntu2
Architecture: amd64
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/controlC1: michaelh 2984 F.... pulseaudio
/dev/snd/pcmC1D0p: michaelh 2984 F...m pulseaudio
/dev/snd/controlC0: michaelh 2984 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xf8500000 irq 48'
Mixer name : 'Conexant CX20561 (Hermosa)'
Components : 'HDA:14f15051,17aa20fd,00100000'
Controls : 17
Simple ctrls : 12
Card1.Amixer.info:
Card hw:1 'AN1'/'XITEL MD-PORT AN1 at usb-0000:00:1d.0-2, full speed'
Mixer name : 'USB Mixer'
Components : 'USB09ef:0101'
Controls : 4
Simple ctrls : 3
Card29.Amixer.info:
Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7VHT16WW-1.06'
Mixer name : 'ThinkPad EC 7VHT16WW-1.06'
Components : ''
Controls : 1
Simple ctrls : 1
Card29.Amixer.values:
Simple mixer control 'Console',0
Capabilities: pswitch pswitch-joined penum
Playback channels: Mono
Mono: Playback [on]
Date: Tue Mar 6 09:09:40 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120219)
PackageArchitecture: all
ProcEnviron:
SHELL=/bin/bash
TERM=xterm
LANG=en_NZ.UTF-8
LANGUAGE=en_NZ:en
SourcePackage: alsa-driver
Symptom: audio
Symptom_Card: Built-in Audio - HDA Intel
Symptom_Jack: Speaker, Internal
Symptom_Type: Volume slider, or mixer problems
Title: [2732CTO, Conexant CX20561 (Hermosa), Speaker, Internal] volume slider problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/16/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 7YET84WW (3.14 )
dmi.board.name: 2732CTO
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7YET84WW(3.14):bd12/16/2011:svnLENOVO:pn2732CTO:pvrThinkPadR500:rvnLENOVO:rn2732CTO:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 2732CTO
dmi.product.version: ThinkPad R500
dmi.sys.vendor: LENOVO
I've been hearing about other issues where settings are forgotten, for example over reboots.