ALC269VB on Asus EeePC 1015PN, No sound from speakers, but sound from headphones

[Brad Jolly]

Sound from speakers has stopped working on Asus EeePC 1015PN , but sound from headphones still works. Sound worked fine during initial install, but has stopped working. It may be related to a BIOS update (possible BIOS mis-reporting pins or jacks or driver not getting information correctly?) Unfortunately, BIOS cannot be downgraded to confirm -- all ASUS BIOS software refuses to flash to older BIOS (no force option).

Currently using 11.04 with all updates installed, but problem appears to exist in 10.10 as well
alsa-base version is 1.0.24+dfsg-0ubuntu1

These are the troubleshooting steps I've tried with no effect:
    - check levels in alsamixer (all at 100% except mic boost, shows in alsa-info as 100% as well)
    - booting from LiveUSB, problem is there, too (did not used to be)
    - booting from 10.10 LiveUSB, problem is there, too (did not used to be)
    - installed linux-alsa-driver-modules-2.6.38-8-generic
    - sudo modprobe snd-hda-intel
    - adding "options snd-hda-intel model=asus" to alsa-base.conf
Internal microphone works
Speakers work in Windows

lspci shows both audio cards correctly (the Intel one is what stopped working):
00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 02)
04:00.1 Audio device: nVidia Corporation High Definition Audio Controller (rev a1)

alsa-info available here: http://www.alsa-project.org/db/?f=c4f073addd57b038a54f5c16e9dab24b3c551c5e

Output of aplay -l:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 7: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 8: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0
card 1: NVidia [HDA NVidia], device 9: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

ProblemType: Bug
DistroRelease: Ubuntu 11.04
Package: alsa-base 1.0.24+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.38-8.42-generic 2.6.38.2
Uname: Linux 2.6.38-8-generic x86_64
NonfreeKernelModules: nvidia
AlsaVersion:
 Advanced Linux Sound Architecture Driver Version 1.0.24.
 Compiled on May 5 2011 for kernel 2.6.38-8-generic (SMP).
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: ALC269VB Analog [ALC269VB Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: bsj 1628 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf5efc000 irq 44'
   Mixer name : 'Realtek ALC269VB'
   Components : 'HDA:10ec0269,1043841c,00100100'
   Controls : 12
   Simple ctrls : 8
Card1.Amixer.info:
 Card hw:1 'NVidia'/'HDA NVidia at 0xfbffc000 irq 17'
   Mixer name : 'Nvidia GPU 0b HDMI/DP'
   Components : 'HDA:10de000b,10de0101,00100200'
   Controls : 16
   Simple ctrls : 4
Date: Wed May 18 03:27:21 2011
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=en_US:en
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/18/2011
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 0601
dmi.board.asset.tag: To Be Filled By O.E.M.
dmi.board.name: 1015PN
dmi.board.vendor: ASUSTeK Computer INC.
dmi.board.version: x.xx
dmi.chassis.asset.tag: 0x00000000
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer INC.
dmi.chassis.version: x.x
dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0601:bd02/18/2011:svnASUSTeKComputerINC.:pn1015PN:pvrx.x:rvnASUSTeKComputerINC.:rn1015PN:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x:
dmi.product.name: 1015PN
dmi.product.version: x.x
dmi.sys.vendor: ASUSTeK Computer INC.

[Brad Jolly (nisitiiapi)]

Forgot to mention, checked Bug #697498 and noted people reported resuming from suspend brings sound back. I did suspend and resume as mentioned there. After resume, sound does comes out of speakers, but then headphones don't work. So, it just reverses the problem.

I also tried disabling audio in BIOS, booting into Ubuntu (intel audio was gone from sound preferences), re-enabled audio in BIOS and rebooted, but it had no effect.

[Mossroy (mossroy)]

It's probably be the same problem I had on 1015PX : see the workaround I posted on http://askubuntu.com/questions/649411/internal-speaker-not-working-in-netbook/842760#842760