After trying out various options I sent the machine to our maintenance people.
It seems there was a hardware issue with the sound card. They have rectified it and the sound is working fine. Sorry for all the trouble. As far as I am concerned, we could treat the bug as RESOLVED and close this bug. Thanks for everyone's time ** Description changed: Till about a month ago there was no sound problem on my HP Probook running Ubuntu 12.03. I think a recent upgrade has broken the sound system. Now there is no sound at all. I have tried searching for solutions but fixes have failed. I downloaded the latest alsa driver from the alsa project site and compiled it. But this too has not worked. Need to know what to do ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: alsa-base 1.0.25+dfsg-0ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-37.58-generic 3.2.35 Uname: Linux 3.2.0-37-generic x86_64 NonfreeKernelModules: wl AlsaVersion: - Advanced Linux Sound Architecture Driver Version 1.0.25. - Compiled on Feb 19 2013 for kernel 3.2.0-37-generic (SMP). + Advanced Linux Sound Architecture Driver Version 1.0.25. + Compiled on Feb 19 2013 for kernel 3.2.0-37-generic (SMP). ApportVersion: 2.0.1-0ubuntu17.1 Architecture: amd64 ArecordDevices: - **** List of CAPTURE Hardware Devices **** - card 0: PCH [HDA Intel PCH], device 0: STAC92xx Analog [STAC92xx Analog] - Subdevices: 1/1 - Subdevice #0: subdevice #0 + **** List of CAPTURE Hardware Devices **** + card 0: PCH [HDA Intel PCH], device 0: STAC92xx Analog [STAC92xx Analog] + Subdevices: 1/1 + Subdevice #0: subdevice #0 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: pramathesh 3266 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: pramathesh 3266 F.... pulseaudio Card0.Amixer.info: - Card hw:0 'PCH'/'HDA Intel PCH at 0xd4720000 irq 48' - Mixer name : 'Intel CougarPoint HDMI' - Components : 'HDA:111d7605,103c1618,00100105 HDA:11c11040,103c3066,00100200 HDA:80862805,80860101,00100000' - Controls : 37 - Simple ctrls : 13 + Card hw:0 'PCH'/'HDA Intel PCH at 0xd4720000 irq 48' + Mixer name : 'Intel CougarPoint HDMI' + Components : 'HDA:111d7605,103c1618,00100105 HDA:11c11040,103c3066,00100200 HDA:80862805,80860101,00100000' + Controls : 37 + Simple ctrls : 13 Date: Tue Feb 19 21:23:04 2013 InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425) MarkForUpload: True PackageArchitecture: all SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:PCH failed Symptom_Card: Built-in Audio - HDA Intel PCH Symptom_DevicesInUse: - 3266 pramathesh F.... pulseaudio - PID ACCESS COMMAND + 3266 pramathesh F.... pulseaudio + PID ACCESS COMMAND Symptom_Jack: Speaker, Internal Symptom_Type: No sound at all Title: [HP ProBook 6560b, IDT 92HD81B1X5, Speaker, Internal] No sound at all UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 05/10/2011 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: 68SCE Ver. F.04 dmi.board.name: 1619 dmi.board.vendor: Hewlett-Packard dmi.board.version: KBC Version 97.41 dmi.chassis.type: 10 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvr68SCEVer.F.04:bd05/10/2011:svnHewlett-Packard:pnHPProBook6560b:pvrA0001D02:rvnHewlett-Packard:rn1619:rvrKBCVersion97.41:cvnHewlett-Packard:ct10:cvr: dmi.product.name: HP ProBook 6560b dmi.product.version: A0001D02 dmi.sys.vendor: Hewlett-Packard -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1130199 Title: [HP ProBook 6560b, IDT 92HD81B1X5, Speaker, Internal] No sound at all To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1130199/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
