Public bug reported: My sound was perfect until about an hour ago after I ran the regular system update. All sound was dead even though all volumes were turned up and alsamixer reported all channels turned up. I don't think a kernel update was included, but I was not watching very carefully. Sound works when I boot off 2.6.32-27.
I resolved the problem by enabling the ubuntu-audio-dev ppa: sudo add-apt-repository ppa:ubuntu-audio-dev/ppa sudo apt-get update and installing: sudo apt-get install linux-alsa-driver-modules-$(uname -r) This is not ideal because the default repository packaging is breaking the sound. I am not sure if this is going to break again on the next kernel update? Here is my sound configuration from BEFORE the fix (I ran "wget http://www.alsa-project.org/alsa-info.sh -O alsa-info.sh && bash alsa- info.sh" from terminal to get this): http://www.alsa- project.org/db/?f=99aca7c1374470f3e31df3d525904f5dd6aa6610 And AFTER: http://www.alsa- project.org/db/?f=6f892e0a72deec405b39602adefb2dc2799fe58e Hope this helps. ProblemType: Bug DistroRelease: Ubuntu 10.10 Package: alsa-base 1.0.23+dfsg-1ubuntu4 ProcVersionSignature: Ubuntu 2.6.35-25.44-generic 2.6.35.10 Uname: Linux 2.6.35-25-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. Compiled on Jan 31 2011 for kernel 2.6.35-25-generic (SMP). Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: revive 2312 F.... pulseaudio Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xf0a00000 irq 47' Mixer name : 'Intel Cantiga HDMI' Components : 'HDA:10ec0888,10250142,00100202 HDA:11c11040,10250142,00100200 HDA:80862802,80860101,00100000' Controls : 40 Simple ctrls : 22 Date: Wed Feb 2 14:40:40 2011 InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429) PackageArchitecture: all ProcEnviron: LANG=en_IE.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver dmi.bios.date: 09/17/2008 dmi.bios.vendor: Acer dmi.bios.version: v0.3509 dmi.board.name: Mammoth dmi.board.vendor: Acer, Inc. dmi.board.version: Not Applicable dmi.chassis.type: 1 dmi.chassis.vendor: Acer, Inc. dmi.chassis.version: N/A dmi.modalias: dmi:bvnAcer:bvrv0.3509:bd09/17/2008:svnAcer,inc.:pnAspire7730:pvrNotApplicable:rvnAcer,Inc.:rnMammoth:rvrNotApplicable:cvnAcer,Inc.:ct1:cvrN/A: dmi.product.name: Aspire 7730 dmi.product.version: Not Applicable dmi.sys.vendor: Acer, inc. ** Affects: alsa-driver (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug maverick -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/711906 Title: Sound broken in kernel 2.6.35-25 after routine updates -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
