12.04, sound output-device lost, thinkpad x201

[Anders Hall]

From time to time the output/input device list is emptied and sound stops (screenshot attached). Sound devices seem to be detected by these command, even if they are not listed in the UI.

aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
  Subdevices: 0/1
  Subdevice #0: subdevice #0
card 0: Intel [HDA Intel], device 3: HDMI 0 [HDMI 0]
  Subdevices: 1/1
  Subdevice #0: subdevice #0

and from sudo lspci -v

00:00.0 Host bridge: Intel Corporation Core Processor DRAM Controller (rev 02)
 Subsystem: Lenovo Device 2193
 Flags: bus master, fast devsel, latency 0
 Capabilities: [e0] Vendor Specific Information: Len=0c <?>
 Kernel driver in use: agpgart-intel

00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated Graphics Controller (rev 02) (prog-if 00 [VGA controller])
 Subsystem: Lenovo Device 215a
 Flags: bus master, fast devsel, latency 0, IRQ 42
 Memory at f2000000 (64-bit, non-prefetchable) [size=4M]
 Memory at d0000000 (64-bit, prefetchable) [size=256M]
 I/O ports at 1800 [size=8]
 Expansion ROM at <unassigned> [disabled]
 Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
 Capabilities: [d0] Power Management version 2
 Capabilities: [a4] PCI Advanced Features
 Kernel driver in use: i915
 Kernel modules: i915

00:16.0 Communication controller: Intel Corporation 5 Series/3400 Series Chipset HECI Controller (rev 06)
 Subsystem: Lenovo Device 215f
 Flags: bus master, fast devsel, latency 0, IRQ 41
 Memory at f2727800 (64-bit, non-prefetchable) [size=16]
 Capabilities: [50] Power Management version 3
 Capabilities: [8c] MSI: Enable+ Count=1/1 Maskable- 64bit+
 Kernel driver in use: mei
 Kernel modules: mei

00:16.3 Serial controller: Intel Corporation 5 Series/3400 Series Chipset KT Controller (rev 06) (prog-if 02 [16550])
 Subsystem: Lenovo Device 2162
 Flags: 66MHz, fast devsel, IRQ 17
 I/O ports at 1808 [size=8]
 Memory at f2524000 (32-bit, non-prefetchable) [size=4K]
 Capabilities: [c8] Power Management version 3
 Capabilities: [d0] MSI: Enable- Count=1/1 Maskable- 64bit+
 Kernel driver in use: serial

00:19.0 Ethernet controller: Intel Corporation 82577LM Gigabit Network Connection (rev 06)
 Subsystem: Lenovo Device 2153
 Flags: bus master, fast devsel, latency 0, IRQ 43
 Memory at f2500000 (32-bit, non-prefetchable) [size=128K]
 Memory at f2525000 (32-bit, non-prefetchable) [size=4K]
 I/O ports at 1820 [size=32]
 Capabilities: [c8] Power Management version 2
 Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
 Capabilities: [e0] PCI Advanced Features
 Kernel driver in use: e1000e
 Kernel modules: e1000e

00:1a.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06) (prog-if 20 [EHCI])
 Subsystem: Lenovo Device 2163
 Flags: bus master, medium devsel, latency 0, IRQ 23
 Memory at f2728000 (32-bit, non-prefetchable) [size=1K]
 Capabilities: [50] Power Management version 2
 Capabilities: [58] Debug port: BAR=1 offset=00a0
 Capabilities: [98] PCI Advanced Features
 Kernel driver in use: ehci_hcd

00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset High Definition Audio (rev 06)
 Subsystem: Lenovo Device 215e
 Flags: bus master, fast devsel, latency 0, IRQ 45
 Memory at f2520000 (64-bit, non-prefetchable) [size=16K]
 Capabilities: [50] Power Management version 2
 Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+
 Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00
 Capabilities: [100] Virtual Channel
 Capabilities: [130] Root Complex Link
 Kernel driver in use: snd_hda_intel
 Kernel modules: snd-hda-intel

00:1c.0 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 1 (rev 06) (prog-if 00 [Normal decode])
 Flags: bus master, fast devsel, latency 0
 Bus: primary=00, secondary=0d, subordinate=0d, sec-latency=0
 Capabilities: [40] Express Root Port (Slot+), MSI 00
 Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
 Capabilities: [90] Subsystem: Lenovo Device 2164
 Capabilities: [a0] Power Management version 2
 Kernel driver in use: pcieport
 Kernel modules: shpchp

00:1c.3 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 4 (rev 06) (prog-if 00 [Normal decode])
 Flags: bus master, fast devsel, latency 0
 Bus: primary=00, secondary=05, subordinate=0c, sec-latency=0
 I/O behind bridge: 00002000-00002fff
 Memory behind bridge: f0000000-f1ffffff
 Prefetchable memory behind bridge: 00000000f2800000-00000000f28fffff
 Capabilities: [40] Express Root Port (Slot+), MSI 00
 Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
 Capabilities: [90] Subsystem: Lenovo Device 2164
 Capabilities: [a0] Power Management version 2
 Kernel driver in use: pcieport
 Kernel modules: shpchp

00:1c.4 PCI bridge: Intel Corporation 5 Series/3400 Series Chipset PCI Express Root Port 5 (rev 06) (prog-if 00 [Normal decode])
 Flags: bus master, fast devsel, latency 0
 Bus: primary=00, secondary=02, subordinate=02, sec-latency=0
 Memory behind bridge: f2400000-f24fffff
 Capabilities: [40] Express Root Port (Slot+), MSI 00
 Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
 Capabilities: [90] Subsystem: Lenovo Device 2164
 Capabilities: [a0] Power Management version 2
 Kernel driver in use: pcieport
 Kernel modules: shpchp

00:1d.0 USB controller: Intel Corporation 5 Series/3400 Series Chipset USB2 Enhanced Host Controller (rev 06) (prog-if 20 [EHCI])
 Subsystem: Lenovo Device 2163
 Flags: bus master, medium devsel, latency 0, IRQ 19
 Memory at f2728400 (32-bit, non-prefetchable) [size=1K]
 Capabilities: [50] Power Management version 2
 Capabilities: [58] Debug port: BAR=1 offset=00a0
 Capabilities: [98] PCI Advanced Features
 Kernel driver in use: ehci_hcd

00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev a6) (prog-if 01 [Subtractive decode])
 Flags: bus master, fast devsel, latency 0
 Bus: primary=00, secondary=0e, subordinate=0e, sec-latency=0
 Capabilities: [50] Subsystem: Lenovo Device 2165

00:1f.0 ISA bridge: Intel Corporation Mobile 5 Series Chipset LPC Interface Controller (rev 06)
 Subsystem: Lenovo Device 2166
 Flags: bus master, medium devsel, latency 0
 Capabilities: [e0] Vendor Specific Information: Len=10 <?>
 Kernel modules: iTCO_wdt

00:1f.2 SATA controller: Intel Corporation 5 Series/3400 Series Chipset 6 port SATA AHCI Controller (rev 06) (prog-if 01 [AHCI 1.0])
 Subsystem: Lenovo Device 2168
 Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 40
 I/O ports at 1860 [size=8]
 I/O ports at 1814 [size=4]
 I/O ports at 1818 [size=8]
 I/O ports at 1810 [size=4]
 I/O ports at 1840 [size=32]
 Memory at f2727000 (32-bit, non-prefetchable) [size=2K]
 Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit-
 Capabilities: [70] Power Management version 3
 Capabilities: [a8] SATA HBA v1.0
 Capabilities: [b0] PCI Advanced Features
 Kernel driver in use: ahci

00:1f.3 SMBus: Intel Corporation 5 Series/3400 Series Chipset SMBus Controller (rev 06)
 Subsystem: Lenovo Device 2167
 Flags: medium devsel, IRQ 11
 Memory at f2728800 (64-bit, non-prefetchable) [size=256]
 I/O ports at 1880 [size=32]
 Kernel modules: i2c-i801

00:1f.6 Signal processing controller: Intel Corporation 5 Series/3400 Series Chipset Thermal Subsystem (rev 06)
 Subsystem: Lenovo Device 2190
 Flags: fast devsel, IRQ 19
 Memory at f2526000 (64-bit, non-prefetchable) [size=4K]
 Capabilities: [50] Power Management version 3
 Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
 Kernel driver in use: intel ips
 Kernel modules: intel_ips

02:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 (rev 35)
 Subsystem: Intel Corporation Centrino Ultimate-N 6300 3x3 AGN
 Flags: bus master, fast devsel, latency 0, IRQ 44
 Memory at f2400000 (64-bit, non-prefetchable) [size=8K]
 Capabilities: [c8] Power Management version 3
 Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
 Capabilities: [e0] Express Endpoint, MSI 00
 Capabilities: [100] Advanced Error Reporting
 Capabilities: [140] Device Serial Number 00-24-d7-ff-ff-4c-37-0c
 Kernel driver in use: iwlwifi
 Kernel modules: iwlwifi

ff:00.0 Host bridge: Intel Corporation Core Processor QuickPath Architecture Generic Non-core Registers (rev 02)
 Subsystem: Lenovo Device 2196
 Flags: bus master, fast devsel, latency 0

ff:00.1 Host bridge: Intel Corporation Core Processor QuickPath Architecture System Address Decoder (rev 02)
 Subsystem: Lenovo Device 2196
 Flags: bus master, fast devsel, latency 0

ff:02.0 Host bridge: Intel Corporation Core Processor QPI Link 0 (rev 02)
 Subsystem: Lenovo Device 2196
 Flags: bus master, fast devsel, latency 0

ff:02.1 Host bridge: Intel Corporation Core Processor QPI Physical 0 (rev 02)
 Subsystem: Lenovo Device 2196
 Flags: bus master, fast devsel, latency 0

ff:02.2 Host bridge: Intel Corporation Core Processor Reserved (rev 02)
 Subsystem: Lenovo Device 2196
 Flags: bus master, fast devsel, latency 0

ff:02.3 Host bridge: Intel Corporation Core Processor Reserved (rev 02)
 Subsystem: Lenovo Device 2196
 Flags: bus master, fast devsel, latency 0

NOTE: Restart of ubuntu 12.04 fixes this issue.
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu5
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: bollkalle 2367 F.... pulseaudio
                      bollkalle 18235 F.... plugin-containe
 /dev/snd/pcmC0D0p: bollkalle 18235 f...m plugin-containe
 /dev/snd/timer: bollkalle 18235 F.... plugin-containe
CRDA:
 country SE:
  (2402 - 2482 @ 40), (N/A, 20)
  (5170 - 5250 @ 40), (N/A, 20)
  (5250 - 5330 @ 40), (N/A, 20), DFS
  (5490 - 5710 @ 40), (N/A, 27), DFS
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf2520000 irq 45'
   Mixer name : 'Intel IbexPeak HDMI'
   Components : 'HDA:14f15069,17aa2155,00100302 HDA:80862804,17aa21b5,00100000'
   Controls : 15
   Simple ctrls : 7
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 6QHT29WW-1.10'
   Mixer name : 'ThinkPad EC 6QHT29WW-1.10'
   Components : ''
   Controls : 1
   Simple ctrls : 1
Card29.Amixer.values:
 Simple mixer control 'Console',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
CheckboxSubmission: f2de8b5bda45325be122c7f2cd47227d
CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f
DistroRelease: Ubuntu 12.04
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=02ec33de-1dff-43b9-9e7f-b1cf0f2d883c
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
MachineType: LENOVO 3323RHG
Package: linux (not installed)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-23-generic root=/dev/mapper/lvm1-root ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-23-generic N/A
 linux-backports-modules-3.2.0-23-generic N/A
 linux-firmware 1.79
SourcePackage: linux
StagingDrivers: mei
Tags: precise staging precise staging
Uname: Linux 3.2.0-23-generic x86_64
UpgradeStatus: Upgraded to precise on 2012-04-17 (1 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 07/14/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6QET47WW (1.17 )
dmi.board.name: 3323RHG
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6QET47WW(1.17):bd07/14/2010:svnLENOVO:pn3323RHG:pvrThinkPadX201:rvnLENOVO:rn3323RHG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 3323RHG
dmi.product.version: ThinkPad X201
dmi.sys.vendor: LENOVO
---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
ApportVersion: 2.0.1-0ubuntu5
Architecture: amd64
ArecordDevices:
 **** List of CAPTURE Hardware Devices ****
 card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: bollkalle 2367 F.... pulseaudio
                      bollkalle 18235 F.... plugin-containe
 /dev/snd/pcmC0D0p: bollkalle 18235 f...m plugin-containe
 /dev/snd/timer: bollkalle 18235 F.... plugin-containe
CRDA:
 country SE:
  (2402 - 2482 @ 40), (N/A, 20)
  (5170 - 5250 @ 40), (N/A, 20)
  (5250 - 5330 @ 40), (N/A, 20), DFS
  (5490 - 5710 @ 40), (N/A, 27), DFS
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xf2520000 irq 45'
   Mixer name : 'Intel IbexPeak HDMI'
   Components : 'HDA:14f15069,17aa2155,00100302 HDA:80862804,17aa21b5,00100000'
   Controls : 15
   Simple ctrls : 7
Card29.Amixer.info:
 Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 6QHT29WW-1.10'
   Mixer name : 'ThinkPad EC 6QHT29WW-1.10'
   Components : ''
   Controls : 1
   Simple ctrls : 1
Card29.Amixer.values:
 Simple mixer control 'Console',0
   Capabilities: pswitch pswitch-joined penum
   Playback channels: Mono
   Mono: Playback [on]
CheckboxSubmission: f2de8b5bda45325be122c7f2cd47227d
CheckboxSystem: bb422ca46d02494cdbc459927a98bc2f
DistroRelease: Ubuntu 12.04
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=02ec33de-1dff-43b9-9e7f-b1cf0f2d883c
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
MachineType: LENOVO 3323RHG
Package: linux (not installed)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.2.0-23-generic root=/dev/mapper/lvm1-root ro quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 3.2.0-23.36-generic 3.2.14
PulseList: Error: command ['pacmd', 'list'] failed with exit code 1: No PulseAudio daemon running, or not running as session daemon.
RelatedPackageVersions:
 linux-restricted-modules-3.2.0-23-generic N/A
 linux-backports-modules-3.2.0-23-generic N/A
 linux-firmware 1.79
SourcePackage: linux
StagingDrivers: mei
Tags: precise staging precise staging
Uname: Linux 3.2.0-23-generic x86_64
UpgradeStatus: Upgraded to precise on 2012-04-17 (1 days ago)
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 07/14/2010
dmi.bios.vendor: LENOVO
dmi.bios.version: 6QET47WW (1.17 )
dmi.board.name: 3323RHG
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr6QET47WW(1.17):bd07/14/2010:svnLENOVO:pn3323RHG:pvrThinkPadX201:rvnLENOVO:rn3323RHG:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 3323RHG
dmi.product.version: ThinkPad X201
dmi.sys.vendor: LENOVO

[Brad Figg (brad-figg)]

This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:

apport-collect 985621

and then change the status of the bug to 'Confirmed'.

If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.

This change has been made by an automated script, maintained by the Ubuntu Kernel Team.

[Anders Hall (kallebolle)]

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[Anders Hall (kallebolle)]

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[Anders Hall (kallebolle)]

Bug report system failed. What to do now? :-) Tried the command twize and sent an bug for this too, through window that popped up. I gave launchpad permissions to collect info...

No packages found matching linux.
ERROR: hook /usr/share/apport/general-hooks/ubuntu.py crashed:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/apport/report.py", line 718, in add_hooks_info
    symb['add_info'](self, ui)
  File "/usr/share/apport/general-hooks/ubuntu.py", line 45, in add_info
    match_error_messages(report)
  File "/usr/share/apport/general-hooks/ubuntu.py", line 129, in match_error_messages
    if report['ProblemType'] == 'Package':
  File "/usr/lib/python2.7/UserDict.py", line 23, in __getitem__
    raise KeyError(key)
KeyError: 'ProblemType'
Traceback (most recent call last):
  File "/usr/share/apport/apport-gtk", line 494, in <lambda>
    GLib.idle_add(lambda: self.collect_info(on_finished=self.ui_update_view))
  File "/usr/lib/python2.7/dist-packages/apport/ui.py", line 861, in collect_info
    icthread.exc_raise()
  File "/usr/lib/python2.7/dist-packages/apport/REThread.py", line 34, in run
    self._retval = self.__target(*self.__args, **self.__kwargs)
  File "/usr/lib/python2.7/dist-packages/apport/ui.py", line 111, in thread_collect_info
    if report['ProblemType'] == 'Crash' and \
  File "/usr/lib/python2.7/UserDict.py", line 23, in __getitem__
    raise KeyError(key)
KeyError: 'ProblemType'

[Anders Hall (kallebolle)]

full log, removed passw.

apport-collect 985621
The authorization page:
 (https://launchpad.net/+authorize-token?oauth_token=XXXXXXXXXXXXXXXXXXXXX
allow_permission=DESKTOP_INTEGRATION)
should be opening in your browser. Use your browser to authorize
this program to access Launchpad on your behalf.
Press any key to continue or wait (5) seconds...
Waiting to hear from Launchpad about your decision...
No packages found matching linux.
ERROR: hook /usr/share/apport/general-hooks/ubuntu.py crashed:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/apport/report.py", line 718, in add_hooks_info
    symb['add_info'](self, ui)
  File "/usr/share/apport/general-hooks/ubuntu.py", line 45, in add_info
    match_error_messages(report)
  File "/usr/share/apport/general-hooks/ubuntu.py", line 129, in match_error_messages
    if report['ProblemType'] == 'Package':
  File "/usr/lib/python2.7/UserDict.py", line 23, in __getitem__
    raise KeyError(key)
KeyError: 'ProblemType'
Traceback (most recent c

[Anders Hall (kallebolle)]

work around found on the web:

"Occasionally in Ubuntu Linux, some application hogs the pulseaudio sound server causing other programs like vlc and mplayer to not be able to actually play sound. There is a simple fix for this problem and it can be found at the command prompt level.

Open up BASH and do the following...

mousecrash$ sudo pkill -9 pulseaudio

mousecrash$ pulseaudio"

[Launchpad Janitor (janitor)]

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

[heg (hg)]

The commands

sudo pkill -9 pulseaudio; pulseaudio

worked for me.

[Anders Hall (kallebolle)]

Those commands work for me too. A good workaround/temp fix (distributed with apt) might be to check if restart of service is ok AND retrials less than X (bug-report automatic else if) AND sound normally works...

That way the dev team at least would buy some time to test and fix the code properly.

Cheers.

[Rob Whyte (fudge)]

I also am effected by this bug Ubuntu 12.04 usually when in a browser firefox or epiphany-browser with a lot of CPU usage. I also use gnome-orca to read content on the computer so loss of sound is very bad.

[Luke Yelavich (themuso)]

For all affected with this bug, please try and get a log from PulseAudio when this happens, as per the instructions here: https://wiki.ubuntu.com/PulseAudio/Log.

[Dave Russell (drussell)]

I'm also seeing this... will try and grab log next time.

[Launchpad Janitor (janitor)]

[Expired for pulseaudio (Ubuntu) because there has been no activity for 60 days.]

[Jamie Wilkinson (jaq-spacepants)]

attached is my pulseaudio log from a thinkpad x201 freshly upgraded to precise 12.04, with no sound and all the symptoms of the original poster

[Raymond (superquad-vortex2)]

   0.037| 0.000) D: [pulseaudio] alsa-mixer.c: Skipping path 'analog-output-headphones', none of required-any elements preset.

   0.037| 0.000) D: [pulseaudio] alsa-mixer.c: Probe of element 'Desktop Speaker' failed.

   0.037| 0.000) D: [pulseaudio] alsa-mixer.c: Skipping path 'analog-output-speaker', none of required-any elements preset.

[Daniel van Vugt (vanvugt)]

Thank you for reporting this bug to Ubuntu.
Ubuntu 12.04 (precise) reached end-of-life on April 28, 2017.

See this document for currently supported Ubuntu releases:
https://wiki.ubuntu.com/Releases

We appreciate that this bug may be old and you might not be interested in discussing it any more. But if you are then please upgrade to the latest Ubuntu version and re-test.

[Launchpad Janitor (janitor)]

[Expired for pulseaudio (Ubuntu) because there has been no activity for 60 days.]