it is strange that pulseaudio select your USB audio device as default sink when there is no volume control
the null autoconfig may be related to modem codec Codec: Conexant ID 2bfa Address: 1 MFG Function Id: 0x2 (unsol 1) Vendor Id: 0x14f12bfa Subsystem Id: 0x104d0200 Revision Id: 0x90000 Modem Function Group: 0x2 seem driver overwrite some pin setup Sysfs Files !!----------- /sys/class/sound/hwC0D0/init_pin_configs: 0x0a 0x02211030 0x0b 0x400000fb 0x0c 0x21211040 0x0d 0x02a1502e 0x0e 0x50370060 0x0f 0x90171110 0x11 0x21451040 0x13 0x40c000fd 0x14 0x90a71020 /sys/class/sound/hwC0D0/driver_pin_configs: 0x0a 0x03211020 0x0b 0x411111f0 0x0c 0x411111f0 0x0d 0x03a15030 0x0e 0x411111f0 0x0f 0x90170110 0x11 0x411111f0 0x13 0x411111f0 0x14 0x90a7013e /sys/class/soun -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1354721 Title: impossible reproduce files correctly [USB-Audio - io|2, playback] Underruns, dropouts or crackling sound Status in “alsa-driver” package in Ubuntu: New Bug description: External audio device ALESIS IO2 Express Initially installation it works well. as soon as I installed Hidrogen & Audacity started the problems. Possibility of net intrusion at system updates (Sorry for my english) ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: alsa-base 1.0.25+dfsg-0ubuntu4 ProcVersionSignature: Ubuntu 3.13.0-32.57-generic 3.13.11.4 Uname: Linux 3.13.0-32-generic i686 ApportVersion: 2.14.1-0ubuntu3.3 Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: sergi 1953 F.... pulseaudio /dev/snd/controlC1: sergi 1953 F.... pulseaudio CurrentDesktop: Unity Date: Sat Aug 9 18:22:58 2014 InstallationDate: Installed on 2014-08-08 (1 days ago) InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release i386 (20140722.2) PackageArchitecture: all ProcEnviron: LANGUAGE=ca PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=ca_ES.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:io2 failed Symptom_Card: io|2 - io|2 Symptom_Type: Underruns, dropouts, or "crackling" sound Title: [USB-Audio - io|2, playback] Underruns, dropouts or crackling sound UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 08/17/2006 dmi.bios.vendor: Phoenix Technologies LTD dmi.bios.version: R0170J3 dmi.board.asset.tag: N/A dmi.board.name: VAIO dmi.board.vendor: Sony Corporation dmi.board.version: N/A dmi.chassis.asset.tag: 7R2M000000002a5e9212242842a4 dmi.chassis.type: 10 dmi.chassis.vendor: Sony Corporation dmi.chassis.version: C3LMSGGQ dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrR0170J3:bd08/17/2006:svnSonyCorporation:pnVGN-FE31B:pvrC3LMSGGQ:rvnSonyCorporation:rnVAIO:rvrN/A:cvnSonyCorporation:ct10:cvrC3LMSGGQ: dmi.product.name: VGN-FE31B dmi.product.version: C3LMSGGQ dmi.sys.vendor: Sony Corporation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1354721/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
