I see (and hear) similar symptoms as well on Kubuntu 12.10 + KDE 4.10.1, but in contrast to what was reported in comment#2, I don't see extraordinary levels in pavucontrol.
Audio recording did work well before KDE 4.10. PulseAudio version is 1:2.1-0ubuntu4. -- 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/1119442 Title: No sound capturing possible - only noise - no hardware issue Status in “pulseaudio” package in Ubuntu: Confirmed Bug description: Since my update to KDE 4.10.0 (Kubuntu 12.04 backports) sound recording is not possible anymore. All I hear is hard noise, no matter what microphone I use (analog, usb, …). I recorded my screen so you can see what's happening: http://youtu.be/4YM3oDcl7K4 I record sound using Audacity, so you can see the noise. Then I use KMix and the Audiosettings software to change several configuration settings. I booted Kubuntu 12.04.1 from CD-ROM (installation disk) to check if it is a hardware issue, however recording works fine using the live system. Please let me know if I can provide more helpful information. === Installed Pulse Audio packages === $ dpkg -l|grep ^ii|grep pulseaudio ii ffgtk-plugins-pulseaudio 0.8.5-0ubuntu1~precise ii gstreamer0.10-pulseaudio 0.10.31-1ubuntu1 ii pulseaudio 1:1.1-0ubuntu15.2 ii pulseaudio-esound-compat 1:1.1-0ubuntu15.2 ii pulseaudio-module-bluetooth 1:1.1-0ubuntu15.2 ii pulseaudio-module-gconf 1:1.1-0ubuntu15.2 ii pulseaudio-module-x11 1:1.1-0ubuntu15.2 ii pulseaudio-module-zeroconf 1:1.1-0ubuntu15.2 ii pulseaudio-utils 1:1.1-0ubuntu15.2 === Installed Phonon Packages === $ dpkg -l|grep ^ii|grep phonon ii libphonon4 4:4.7.0really4.6.0-0ubuntu1 ii phonon 4:4.7.0really4.6.0-0ubuntu1 ii phonon-backend-gstreamer 4:4.7.0really4.6.2-0ubuntu1~precise1~ppa1 ii phonon-backend-vlc 0.6.0-0ubuntu1~ppa1~precise1 === Installed ALSA packages === $ dpkg -l|grep ^ii|grep alsa ii alsa-base 1.0.25+dfsg-0ubuntu1 ii alsa-utils 1.0.25-1ubuntu5 ii bluez-alsa 4.98-2ubuntu7 ii bluez-alsa:i386 4.98-2ubuntu7 ii gstreamer0.10-alsa 0.10.36-1ubuntu0.1 ii libsox-fmt-alsa 14.3.2-3 === Anything sound related === $ dpkg -l|grep ^ii|grep sound ii asoundconf-gtk 1.6-0ubuntu1 ii esound-common 0.2.41-10build3 ii lib32asound2 1.0.25-1ubuntu10.1 ii libadplug-2.2.1-0 2.2.1+dfsg1-1build1 ii libasound2 1.0.25-1ubuntu10.1 ii libasound2:i386 1.0.25-1ubuntu10.1 ii libasound2-plugins 1.0.25-1ubuntu1 ii libasound2-plugins:i386 1.0.25-1ubuntu1 ii libcanberra-gtk-module:i386 0.28-3ubuntu3 ii libcanberra-gtk0:i386 0.28-3ubuntu3 ii libcanberra-gtk3-0 0.28-3ubuntu3 ii libcanberra-gtk3-module 0.28-3ubuntu3 ii libcanberra0 0.28-3ubuntu3 ii libcanberra0:i386 0.28-3ubuntu3 ii libmikmod2:i386 3.1.12-2 ii libsoundtouch0 1.6.0-2build1 ii linux-sound-base 1.0.25+dfsg-0ubuntu1 ii pulseaudio 1:1.1-0ubuntu15.2 ii pulseaudio-esound-compat 1:1.1-0ubuntu15.2 ii pulseaudio-module-bluetooth 1:1.1-0ubuntu15.2 ii pulseaudio-module-gconf 1:1.1-0ubuntu15.2 ii pulseaudio-module-x11 1:1.1-0ubuntu15.2 ii pulseaudio-module-zeroconf 1:1.1-0ubuntu15.2 ii pulseaudio-utils 1:1.1-0ubuntu15.2 ii sndfile-tools 1.03-2build2 ii sound-theme-freedesktop 0.7.pristine-2 ii sox 14.3.2-3 ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: pulseaudio 1:1.1-0ubuntu15.2 ProcVersionSignature: Ubuntu 3.2.0-37.58-generic 3.2.35 Uname: Linux 3.2.0-37-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. ApportVersion: 2.0.1-0ubuntu17.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: floeschie 2998 F.... pulseaudio /dev/snd/controlC0: floeschie 2998 F.... pulseaudio floeschie 5764 F.... audacity Card0.Amixer.info: Card hw:0 'PCH'/'HDA Intel PCH at 0xf1620000 irq 51' Mixer name : 'Intel CougarPoint HDMI' Components : 'HDA:14f1506e,17aa21d2,00100002 HDA:80862805,80860101,00100000' Controls : 27 Simple ctrls : 9 Card1.Amixer.info: Card hw:1 'SPZ2500'/'Philips Philips SPZ2500 at usb-0000:00:1a.0-1.5.1, high speed' Mixer name : 'USB Mixer' Components : 'USB0471:20b5' Controls : 2 Simple ctrls : 1 Card1.Amixer.values: Simple mixer control 'Mic',0 Capabilities: cvolume cvolume-joined cswitch cswitch-joined penum Capture channels: Mono Limits: Capture 0 - 48 Mono: Capture 48 [100%] [21.00dB] [on] Card29.Amixer.info: Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw unknown' Mixer name : 'ThinkPad EC (unknown)' 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: Fri Feb 8 14:59:37 2013 EcryptfsInUse: Yes InstallationMedia: Kubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111012) MarkForUpload: True ProcEnviron: LANGUAGE= TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash SourcePackage: pulseaudio UpgradeStatus: Upgraded to precise on 2012-08-06 (186 days ago) dmi.bios.date: 11/01/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 8CET50WW (1.30 ) dmi.board.asset.tag: Not Available dmi.board.name: 4174P5G 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:bvr8CET50WW(1.30):bd11/01/2011:svnLENOVO:pn4174P5G:pvrThinkPadT420s:rvnLENOVO:rn4174P5G:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 4174P5G dmi.product.version: ThinkPad T420s dmi.sys.vendor: LENOVO modified.conffile..etc.pulse.system.pa: [modified] mtime.conffile..etc.pulse.system.pa: 2012-01-31T20:12:19.482553 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pulseaudio/+bug/1119442/+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
