Raymond, the output is below. BTW I will not have access to the problem computer for further testing for awhile.
As for your question about front audio panel, there is only one mic and one headphone jack. As for jack states, I'm not sure I understand. ================================================ $ ./alsa_utils_alsa-info.sh ALSA Information Script v 0.4.61 -------------------------------- This script visits the following commands/files to collect diagnostic information about your ALSA installation and sound related hardware. dmesg lspci lsmod aplay amixer alsactl /proc/asound/ /sys/class/sound/ ~/.asoundrc (etc.) See './alsa_utils_alsa-info.sh --help' for command line options. Automatically upload ALSA information to www.alsa-project.org? [y/N] : y Uploading information to www.alsa-project.org ... Done! Your ALSA information is located at http://www.alsa- project.org/db/?f=03a0e106fb32c5cbf4e0e42ef27a292db9dcfd3e Please inform the person helping you. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to pulseaudio in Ubuntu. https://bugs.launchpad.net/bugs/1004607 Title: pulseaudio switches microhpones randomly Status in “pulseaudio” package in Ubuntu: Confirmed Bug description: Problem ======= During Skype calls, pulseaudio switches input to front microphone randomly. I need to manually switch back to rear mic every time that happens. Expected ======= I select the rear microphone as input (pavucontrol) and it stays that way. Workaround ========== I disabled this module in /etc/pulse/default.pa: # load-module module-switch-on-port-available and then restarting pulseaudio obviously solves this. Ideal workaround ============== Disable port switching for (selected?) input devices in pavucontrol. Or at least somehow honor my selection, e.g. if the input is marked as a fallback device, it shouldn't switch. Possible cause 1 ============= After pulseaudio startup, pactl shows these lines: analog-input-microphone-front: Front Microphone (priority 8500, available: yes) analog-input-microphone-rear: Rear Microphone (priority 8200, available: no) Note: I don't use the front mic port at all. Possible cause 2 ============= My sound card or ports may be creating noise that triggers "jack activation" events Possible cause 3 ============= Bios, hardware related issues trigger jack activation events. Example of pulseaudio switching mics during Skype call: ============================================ pulseaudio[32253]: [alsa-source] alsa-source.c: Calculated software volume: 0: 100% 1: 100% (accurate-enough=yes) pulseaudio[32253]: [alsa-source] alsa-source.c: in dB: 0: 0.00 dB 1: 0.00 dB pulseaudio[32253]: [alsa-source] source.c: Volume not changing pulseaudio[32253]: [pulseaudio] module-suspend-on-idle.c: Source alsa_input.pci-0000_00_07.0.analog-stereo becomes busy. pulseaudio[32253]: [alsa-sink] ratelimit.c: 723 events suppressed pulseaudio[32253]: [alsa-sink] flist.c: pulsecore/memblockq.c: list_items flist is full (don't worry) pulseaudio[32253]: last message repeated 10 times pulseaudio[32253]: [pulseaudio] module-alsa-card.c: Jack 'Front Mic Jack' is now unplugged pulseaudio[32253]: [pulseaudio] device-port.c: Setting port analog-input-microphone-front to status no pulseaudio[32253]: [pulseaudio] module-switch-on-port-available.c: finding port analog-input-microphone-front pulseaudio[32253]: [pulseaudio] module-alsa-card.c: Jack 'Front Mic Jack' is now plugged in pulseaudio[32253]: [pulseaudio] device-port.c: Setting port analog-input-microphone-front to status yes pulseaudio[32253]: [pulseaudio] module-switch-on-port-available.c: finding port analog-input-microphone-front pulseaudio[32253]: [alsa-source] alsa-mixer.c: Activating path analog-input-microphone-front pulseaudio[32253]: [alsa-source] alsa-mixer.c: Path analog-input-microphone-front (Front Microphone), direction=2, priority=85, probed=yes, supported=yes, has_mute=yes, has_volume=yes, has_dB=yes, min_volume=0, max_volume=3, min_dB=-16.5, max_dB=60 pulseaudio[32253]: [alsa-source] alsa-mixer.c: Element Front Mic Boost, direction=2, switch=0, volume=1, volume_limit=-1, enumeration=0, required=0, required_any=4, required_absent=0, mask=0x3600000000f66, n_channels=2, override_map=yes pulseaudio[32253]: [alsa-source] alsa-mixer.c: Element Capture, direction=2, switch=1, volume=1, volume_limit=-1, enumeration=0, required=0, required_any=0, required_absent=0, mask=0x3600000000f66, n_channels=2, override_map=yes pulseaudio[32253]: [alsa-source] alsa-mixer.c: Element Input Source, direction=2, switch=0, vol Note the line: module-alsa-card.c: Jack 'Front Mic Jack' is now unplugged and instantly afterwards: module-switch-on-port-available.c: finding port analog-input-microphone-front Sound card ========= cat /proc/asound/card0/codec\#0|grep Codec Codec: Realtek ALC888 Versions ======= Ubuntu 12.04 LTS pulseaudio 1:1.1-0ubuntu1 kernel 3.2.0-24-generic alsa-base 1.0.25+dfsg-0u To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1004607/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
