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[Raymond <893210@xxxxxxxxxxxxxxxxxx>]

only those in whitelist call snd_ac97_update_bits(ac97,
AC97_AD_JACK_SPDIF, 1<<11, 1<<11);


https://git.kernel.org/cgit/linux/kernel/git/tiwai/sound.git/tree/sound/pci/ac97/ac97_patch.c

static unsigned int ad1981_jacks_whitelist[] = {
	0x0e11005a, /* HP nc4000/4010 */
	0x103c0890, /* HP nc6000 */
	0x103c0938, /* HP nc4220 */
	0x103c099c, /* HP nx6110 */
	0x103c0944, /* HP nc6220 */
	0x103c0934, /* HP nc8220 */
	0x103c006d, /* HP nx9105 */
	0x103c300d, /* HP Compaq dc5100 SFF(PT003AW) */
	0x17340088, /* FSC Scenic-W */
	0 /* end */
};

static void check_ad1981_hp_jack_sense(struct snd_ac97 *ac97)
{
	if (check_list(ac97, ad1981_jacks_whitelist))
		/* enable headphone jack sense */
		snd_ac97_update_bits(ac97, AC97_AD_JACK_SPDIF, 1<<11, 1<<11);
}

-- 
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/893210

Title:
  [Dell OptiPlex GX620 - AD1981b, playback] No sound at all

Status in ALSA driver:
  Confirmed
Status in alsa-driver package in Ubuntu:
  Incomplete

Bug description:
  fresh install of ubuntu studio and updates but internal speakers do
  not play. dell optiplex gx620 love ya

  ProblemType: Bug
  DistroRelease: Ubuntu 11.10
  Package: alsa-base 1.0.24+dfsg-0ubuntu2
  ProcVersionSignature: Ubuntu 3.0.0-13.22-generic 3.0.6
  Uname: Linux 3.0.0-13-generic i686
  AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
  ApportVersion: 1.23-0ubuntu4
  Architecture: i386
  Card0.Amixer.info:
   Card hw:0 'ICH7'/'Intel ICH7 with AD1981B at irq 23'
     Mixer name	: 'Analog Devices AD1981B'
     Components	: 'AC97a:41445374'
     Controls      : 28
     Simple ctrls  : 20
  Card1.Amixer.info:
   Card hw:1 'Device'/'C-Media Electronics Inc. USB Multimedia Audio Device at usb-0000:00:1d.7-4.1.4,'
     Mixer name	: 'USB Mixer'
     Components	: 'USB0d8c:0105'
     Controls      : 13
     Simple ctrls  : 6
  Date: Mon Nov 21 11:51:25 2011
  InstallationMedia: Ubuntu-Studio 11.10 "Oneiric Ocelot" - Release i386 (20111011.1)
  PackageArchitecture: all
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: alsa-driver
  Symptom: audio
  Symptom_AlsaPlaybackTest: ALSA playback test through plughw:ICH7 failed
  Symptom_Card: CM108 Audio Controller - USB Multimedia Audio Device
  Symptom_Type: No sound at all
  Title: [ICH4 - Intel ICH7, playback] No sound at all
  UpgradeStatus: Upgraded to oneiric on 2011-11-12 (8 days ago)
  dmi.bios.date: 11/30/2006
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: A11
  dmi.board.name: 0F8101
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 15
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvrA11:bd11/30/2006:svnDellInc.:pnOptiPlexGX620:pvr:rvnDellInc.:rn0F8101:rvr:cvnDellInc.:ct15:cvr:
  dmi.product.name: OptiPlex GX620
  dmi.sys.vendor: Dell Inc.

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