[IdeaPad Z470, Realtek ALC269VB, Speaker, Internal] computer freezes when setting volume

[Adel Alsbeehi]

when i press the volume slider the volume gets stuck on maximum then returns to mute.. by then the window freezes and i cant use the keyboard to type anything.. the task bar doesnt respond to anything and so i have to restart my pc again.. only way to set the volume without having this issue is to go to settings and adjust the volume from there.. pretty frustrating though..

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: alsa-base 1.0.25+dfsg-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24
Uname: Linux 3.2.0-29-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu12
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: PCH [HDA Intel PCH], device 0: ALC269VB Analog [ALC269VB Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC1: adoool 1699 F.... pulseaudio
 /dev/snd/controlC0: adoool 1699 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'PCH'/'HDA Intel PCH at 0xc9afc000 irq 46'
   Mixer name : 'Intel CougarPoint HDMI'
   Components : 'HDA:10ec0269,17aa4016,00100100 HDA:80862805,80860101,00100000'
   Controls : 27
   Simple ctrls : 13
Card1.Amixer.info:
 Card hw:1 'NVidia'/'HDA NVidia at 0xcbefc000 irq 17'
   Mixer name : 'Nvidia GPU 14 HDMI/DP'
   Components : 'HDA:10de0014,10de0101,00100100'
   Controls : 24
   Simple ctrls : 4
Date: Thu Aug 16 12:32:39 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Release amd64 (20120425)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
Symptom: audio
Symptom_Card: Built-in Audio - HDA Intel PCH
Symptom_Jack: Speaker, Internal
Symptom_Type: Volume slider, or mixer problems
Title: [IdeaPad Z470, Realtek ALC269VB, Speaker, Internal] volume slider problem
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 11/07/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 4ACN36WW
dmi.board.name: KL6
dmi.board.vendor: LENOVO
dmi.board.version: Rev 1.0
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Rev 1.0
dmi.modalias: dmi:bvnLENOVO:bvr4ACN36WW:bd11/07/2011:svnLENOVO:pnIdeaPadZ470:pvrRev1.0:rvnLENOVO:rnKL6:rvrRev1.0:cvnLENOVO:ct10:cvrRev1.0:
dmi.product.name: IdeaPad Z470
dmi.product.version: Rev 1.0
dmi.sys.vendor: LENOVO

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Jesus Amozurrutia (jamozu)]

Found this fix to this Bug:

Add the following line to your /lib/udev/rules.d/95-keyboard-force-release.rules file:

ENV{DMI_VENDOR}=="LENOVO", ATTR{[dmi/id]product_name}=="IdeaPad Z370", RUN+="keyboard-force-release.sh $devpath common-volume-keys"

Reference: (http://diyistheway.blogspot.mx/2012/06/ubuntu-1210-on-pink-lenovo-z370.html)