Public bug reported:

My thinkpad x1 laptop special keys for volume up , down and mute stopped
working after upgrade to Ubuntu 13.10 from 13.04. They were working
properly on 13.04 version. The keys are still recognized and can be used
for other custom shortcuts but the default volume up / down and mute
does not work. I have tried setting these keys explicitly in systems
settings -> keyboard shortcut but even after doing so it did not work.
Neither of volume indicator icons are shown nor it controls volume.

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: xorg 1:7.7+1ubuntu6
ProcVersionSignature: Ubuntu 3.11.0-12.19-generic 3.11.3
Uname: Linux 3.11.0-12-generic x86_64
.tmp.unity.support.test.0:
 
ApportVersion: 2.12.5-0ubuntu2
Architecture: amd64
CompizPlugins: 
[core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,staticswitcher,workarounds,scale,expo,ezoom,dbus]
CompositorRunning: compiz
CompositorUnredirectDriverBlacklist: '(nouveau|Intel).*Mesa 8.0'
CompositorUnredirectFSW: true
Date: Sun Oct 20 14:57:02 2013
DistUpgraded: 2013-10-18 15:48:37,655 DEBUG enabling apt cron job
DistroCodename: saucy
DistroVariant: ubuntu
DkmsStatus:
 acpi-call, 20130623, 3.11.0-12-generic, x86_64: installed
 acpi-call, 20130623, 3.8.0-31-generic, x86_64: installed
 tp-smapi, 0.41, 3.11.0-12-generic, x86_64: installed
 tp-smapi, 0.41, 3.8.0-31-generic, x86_64: installed
ExtraDebuggingInterest: Yes
GraphicsCard:
 Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 
09) (prog-if 00 [VGA controller])
   Subsystem: Lenovo Device [17aa:21f9]
InstallationDate: Installed on 2013-04-24 (178 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: LENOVO 3460AJ1
MarkForUpload: True
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-12-generic 
root=UUID=e349a24b-5273-4413-9fa8-f12654c182c3 ro acpi_backlight=vendor quiet 
splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: Upgraded to saucy on 2013-10-18 (1 days ago)
dmi.bios.date: 11/20/2012
dmi.bios.vendor: LENOVO
dmi.bios.version: G6ET66WW (2.10 )
dmi.board.asset.tag: Not Available
dmi.board.name: 3460AJ1
dmi.board.vendor: LENOVO
dmi.board.version: Not Defined
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: 
dmi:bvnLENOVO:bvrG6ET66WW(2.10):bd11/20/2012:svnLENOVO:pn3460AJ1:pvrThinkPadX1Carbon:rvnLENOVO:rn3460AJ1:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 3460AJ1
dmi.product.version: ThinkPad X1 Carbon
dmi.sys.vendor: LENOVO
version.compiz: compiz 1:0.9.10+13.10.20131011-0ubuntu1
version.ia32-libs: ia32-libs 20090808ubuntu36
version.libdrm2: libdrm2 2.4.46-1
version.libgl1-mesa-dri: libgl1-mesa-dri 9.2.1-1ubuntu3
version.libgl1-mesa-dri-experimental: libgl1-mesa-dri-experimental N/A
version.libgl1-mesa-glx: libgl1-mesa-glx 9.2.1-1ubuntu3
version.xserver-xorg-core: xserver-xorg-core 2:1.14.3-3ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.7.3-0ubuntu3.1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:7.2.0-0ubuntu10
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.904-0ubuntu2
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.9-2ubuntu1
xserver.bootTime: Fri Oct 18 15:49:09 2013
xserver.configfile: default
xserver.errors:
 
xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id                                 898 
 vendor                                     LGD
xserver.version: 2:1.14.3-3ubuntu2

** Affects: xorg (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug compiz-0.9 saucy ubuntu

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You received this bug notification because you are a member of Ubuntu-X,
which is subscribed to xorg in Ubuntu.
https://bugs.launchpad.net/bugs/1242259

Title:
  Thinkpad x1 Volume up down and mute keys stopped working after upgrade
  to Ubuntu 13.10

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1242259/+subscriptions

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