Public bug reported: Acer Aspire One D260-A. Sound output and control via pulseaudio is fine and has been with 11.04, 11.10 and now 12.04. However, sound input from the internal mic has been mostly broken.
The internal mic was detected and the sound recorder application worked perfectly with 12.04 BETA 2 booted from a usb stick. I expected it would be fine when I upgraded to the new release, but it isn't. When I boot my system (upgraded from 11.10 to 12.04 official releases), the mic doesn't record anything except low level static. Alsamixer shows it is at 100% gain and not muted. Pulseaudio control doesn't show ANY input device. Not surprisingly the volume control slider is at zero and the mute checkbox is unchecked, but both are greyede-out. Wierdly, when I boot the 12.04 desktop official release from a usb stick sound recorder actually records my voice, but very faintly even at full gain. Pulseaudio control STILL shows no input devices and the volume control is greyed, set to zero and not muted. Unfortunately I didn't keep the beta 2 system, so I can't look for differences - did any of the latest packages in the beta get forgotten when the release was cut (I don't see how that would be possible, but I have to ask). ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: alsa-base 1.0.25+dfsg-0ubuntu1 ProcVersionSignature: Ubuntu 3.2.0-24.37-generic 3.2.14 Uname: Linux 3.2.0-24-generic i686 NonfreeKernelModules: wl AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. AplayDevices: **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 ApportVersion: 2.0.1-0ubuntu7 Architecture: i386 ArecordDevices: **** List of CAPTURE Hardware Devices **** card 0: Intel [HDA Intel], device 0: ALC272X Analog [ALC272X Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: jane 1822 F.... pulseaudio jane 2578 F.... alsamixer Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0x58200000 irq 44' Mixer name : 'Realtek ALC272X' Components : 'HDA:10ec0272,10250349,00100001' Controls : 17 Simple ctrls : 9 CurrentDmesg: [ 22.134596] init: plymouth-stop pre-start process (1257) terminated with status 1 [ 22.360095] Adding 3998716k swap on /dev/mapper/cryptswap1. Priority:-1 extents:1 across:3998716k [ 51.672107] eth1: no IPv6 routers present Date: Tue May 8 16:40:09 2012 EcryptfsInUse: Yes InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110427.1) PackageArchitecture: all ProcEnviron: LANGUAGE=en_GB:en TERM=xterm PATH=(custom, no user) LANG=en_GB.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver Symptom: audio Symptom_AlsaRecordingTest: ALSA recording test through plughw:Intel failed Symptom_Card: Built-in Audio - HDA Intel Symptom_DevicesInUse: 1822 2578/dev/snd/controlC0: jane F.... pulseaudio jane F.... alsamixer Symptom_Jack: Mic, Internal Symptom_Type: No sound at all Title: [AOD260, Realtek ALC272X, Mic, Internal] No sound at all UpgradeStatus: Upgraded to precise on 2012-05-04 (4 days ago) dmi.bios.date: 04/28/2010 dmi.bios.vendor: Acer dmi.bios.version: V1.01 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: AOD260 dmi.board.vendor: Acer dmi.board.version: V1.01 dmi.chassis.type: 10 dmi.chassis.vendor: Acer dmi.chassis.version: V1.01 dmi.modalias: dmi:bvnAcer:bvrV1.01:bd04/28/2010:svnAcer:pnAOD260:pvrV1.01:rvnAcer:rnAOD260:rvrV1.01:cvnAcer:ct10:cvrV1.01: dmi.product.name: AOD260 dmi.product.version: V1.01 dmi.sys.vendor: Acer ** Affects: alsa-driver (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug i386 precise -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/996611 Title: [AOD260, Realtek ALC272X, Mic, Internal] No sound at all To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/996611/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs