I haven't taken a closer look yet, but I suspect that the case is that
1) when the first user plugs in headphones, the alsa kcontrol "Speaker" is muted
2) the guest account pulseaudio starts up, without any settings stored
3) the alsa card is loaded and the initial mixer settings are picked up from
alsa
4) at this point the "speaker" port is selected as it has highest priority, so
the initial state is muted, because the "Speaker" kcontrol is muted
5) later in startup, "Headphones" are selected instead, but since there are no
stored setting telling it to unmute, it stays muted.
** Changed in: pulseaudio (Ubuntu)
Status: New => Triaged
** Changed in: pulseaudio (Ubuntu)
Importance: Undecided => Medium
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https://bugs.launchpad.net/bugs/1076947
Title:
Headphone muted in new/guest account
Status in “pulseaudio” package in Ubuntu:
Triaged
Bug description:
Steps to reproduce:
1) Have a laptop such as this one
2) Plug in headphones
3) Fast user switching into a guest account
4) The volume is now muted for the new account
Reproducible in both Quantal and Precise.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: pulseaudio 1:1.1-0ubuntu15.1 [modified:
usr/lib/pm-utils/sleep.d/01PulseAudio
usr/share/pulseaudio/alsa-mixer/paths/analog-input-linein.conf]
ProcVersionSignature: Ubuntu 3.2.0-32.51-generic 3.2.30
Uname: Linux 3.2.0-32-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu14
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: MID [HDA Intel MID], device 0: STAC92xx Analog [STAC92xx Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: david 2004 F.... pulseaudio
Card0.Amixer.info:
Card hw:0 'MID'/'HDA Intel MID at 0xd4900000 irq 48'
Mixer name : 'Intel IbexPeak HDMI'
Components : 'HDA:111d7605,103c1413,00100402
HDA:80862804,80860101,00100000'
Controls : 23
Simple ctrls : 10
CurrentDmesg:
[ 28.311262] r8169 0000:44:00.0: eth0: link up
[ 28.311650] ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 35.303190] Bluetooth: HIDP (Human Interface Emulation) ver 1.2
[ 39.095343] eth0: no IPv6 routers present
Date: Fri Nov 9 11:17:24 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64
(20120103)
SourcePackage: pulseaudio
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 06/29/2010
dmi.bios.vendor: Hewlett-Packard
dmi.bios.version: 68AZZ Ver. F.08
dmi.board.name: 1413
dmi.board.vendor: Hewlett-Packard
dmi.board.version: KBC Version 57.1D
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.modalias:
dmi:bvnHewlett-Packard:bvr68AZZVer.F.08:bd06/29/2010:svnHewlett-Packard:pnHPProBook4520s:pvr:rvnHewlett-Packard:rn1413:rvrKBCVersion57.1D:cvnHewlett-Packard:ct10:cvr:
dmi.product.name: HP ProBook 4520s
dmi.sys.vendor: Hewlett-Packard
modified.conffile..etc.pulse.default.pa: [modified]
mtime.conffile..etc.pulse.default.pa: 2012-02-09T11:15:19.592182
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