refer to Intel Desktop Board D946GZIS Technical Product Specification 1.7 Audio Subsystem Product Description The onboard audio subsystem consists of the following: • Intel 82801GB ICH7 • Analog Devices ADI1988A (or Sigmatel STAC9227) audio codec • Back panel audio connectors • Component-side audio headers The audio subsystem supports the following features: • Advanced jack sense for the back panel audio jacks that enables the audio codec to recognize the device that is connected to an audio port. Within hardware constraints, the back panel audio jacks are capable of retasking according to the user’s definition, or can be automatically switched depending on the recognized device type. • Stereo input and output for all back panel jacks • Line out and Mic in functions for front panel audio jacks
if pin cap support impsense, this mean the driver may retask the rear mic jack automatically by measure the impedance since mic has higher impedance Pincap 0x0000173f: IN OUT HP Detect Trigger ImpSense refer to 9227 datasheet 3.2. 3.3. Impedance Sense Impedance Sense is accomplished by on-chip circuitry that measures the impedance at the pin of the chip and compares it to internal reference impedance. Below is a table that contains the bin information and codes returned when the pin widget impedance field in the Port Pin Sense widget is read. Please note that even under the best conditions, there is no method to guarantee 100% impedance sensing due to variations in external circuitry and impedance overlap of devices that can be plugged into a jack. The impedance sense table reflects both standard Line Out and Headphone output drivers. Please reference the HD Audio Universal Jack Application Note on the SigmaTel Extranet for more information. Table 1: Impedance Sense Passive Speakers, Headset Speakers Impedance Some Headset Speakers Some Microphones Microphones Microphones Amplified Speakers Amplified Speakers, Line In Amplified Speakers, Line In -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/820092 Title: [SigmaTel STAC9227, Green Headphone Out, Front] No sound at all Status in ALSA driver: New Status in “alsa-driver” package in Ubuntu: Confirmed Bug description: My onboard front audio (headphones) does not work in Ubuntu, but does work in Windows. These are my sound devices: == Onboard SigmaTel/IDT STAC9227 audio codec == 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 01) Subsystem: Intel Corporation Device a201 Kernel driver in use: HDA Intel Kernel modules: snd-hda-intel == Offboard Genius SM-Live Value 5.1 sound card == 04:00.0 Multimedia audio controller: C-Media Electronics Inc CM8738 (rev 10) Subsystem: C-Media Electronics Inc CMI8738/C3DX PCI Audio Device Kernel driver in use: C-Media PCI Kernel modules: snd-cmipci ProblemType: Bug DistroRelease: Ubuntu 11.04 Package: alsa-base 1.0.24+dfsg-0ubuntu1 ProcVersionSignature: Ubuntu 2.6.38-10.46-generic 2.6.38.7 Uname: Linux 2.6.38-10-generic i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23. Architecture: i386 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: renato 1485 F.... pulseaudio /dev/snd/pcmC0D0p: renato 1485 F...m pulseaudio /dev/snd/controlC1: renato 1485 F.... pulseaudio Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0x90200000 irq 43' Mixer name : 'SigmaTel STAC9227' Components : 'HDA:83847618,8086a201,00100201' Controls : 26 Simple ctrls : 17 Card1.Amixer.info: Card hw:1 'CMI8738'/'C-Media CMI8738 (model 55) at 0x1100, irq 21' Mixer name : 'CMedia PCI' Components : '' Controls : 41 Simple ctrls : 22 CurrentDmesg: [ 30.704011] eth0: no IPv6 routers present Date: Tue Aug 2 19:43:07 2011 PackageArchitecture: all ProcEnviron: LANGUAGE=pt_BR:en LANG=pt_BR.UTF-8 SHELL=/bin/bash SourcePackage: alsa-driver Symptom: audio Symptom_AlsaPlaybackTest: ALSA playback test through plughw:Intel failed Symptom_Card: Áudio interno - HDA Intel Symptom_DevicesInUse: 1485 1485 1485 renato F...m pulseaudio /dev/snd/controlC1: renato F.... pulseaudio Symptom_Jack: Green Headphone Out, Front Symptom_Type: No sound at all Title: [, SigmaTel STAC9227, Green Headphone Out, Front] No sound at all UpgradeStatus: Upgraded to natty on 2011-06-19 (44 days ago) dmi.bios.date: 11/07/2007 dmi.bios.vendor: Intel Corp. dmi.bios.version: TS94610J.86A.0087.2007.1107.1049 dmi.board.asset.tag: Base Board Asset Tag dmi.board.name: D946GZIS dmi.board.vendor: Intel Corporation dmi.board.version: AAD66165-301 dmi.chassis.type: 2 dmi.modalias: dmi:bvnIntelCorp.:bvrTS94610J.86A.0087.2007.1107.1049:bd11/07/2007:svn:pn:pvr:rvnIntelCorporation:rnD946GZIS:rvrAAD66165-301:cvn:ct2:cvr: To manage notifications about this bug go to: https://bugs.launchpad.net/alsa-driver/+bug/820092/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
