No sound from speakers on LG P1 Express laptop

[Philip Peitsch]

A default install of Ubuntu on my LG P1 Express laptop produces no sound out the main speakers, even though it appears to have a card detected and volume controls display when pressed.

To make the sound work I need to add the line "options snd-hda-intel model=lg" to the end of /etc/modprobe.d/alsa-base.conf and reboot.

This isn't a regression, and has never actually worked from at least Jaunty onwards, if not earlier... my memory doesn't stretch back that far.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: alsa-base 1.0.23+dfsg-1ubuntu2
ProcVersionSignature: Ubuntu 2.6.35-3.4-generic 2.6.35-rc3
Uname: Linux 2.6.35-3-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.23.
Architecture: i386
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: insanity 5283 F.... pulseaudio
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfc500000 irq 47'
   Mixer name : 'Realtek ALC880'
   Components : 'HDA:10ec0880,00001854,00100800 HDA:11c13026,11c13026,00100700'
   Controls : 30
   Simple ctrls : 18
Date: Thu Jun 17 23:17:12 2010
EcryptfsInUse: Yes
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, user)
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
SourcePackage: alsa-driver
dmi.bios.date: 09/19/2007
dmi.bios.vendor: Phoenix Technologies LTD
dmi.bios.version: RKYWSF33
dmi.board.name: ROCKY
dmi.board.vendor: LG Electronics
dmi.board.version: Not Applicable
dmi.chassis.asset.tag: No Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: LG Electronics
dmi.chassis.version: N/A
dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvrRKYWSF33:bd09/19/2007:svnLGElectronics:pnP1-J2A8A:pvrNotApplicable:rvnLGElectronics:rnROCKY:rvrNotApplicable:cvnLGElectronics:ct10:cvrN/A:
dmi.product.name: P1-J2A8A
dmi.product.version: Not Applicable
dmi.sys.vendor: LG Electronics

[Daniel T Chen (crimsun)]

When using model=lg, do all the inputs (mics, line-in) and outputs (hp, int spkr) work?

[Philip Peitsch (philip-peitsch)]

Hi Daniel,

I needed to change the hardware configuration to Audio Stereo Duplix, and fix the volume settings in alsamixer to get the mic to work, but it works well now it seems. The stereo output through the headphones jack seems rather quite though, but I think this is new in Maverick.

[nikhov (nikhov)]

I have the same laptop (LG P1 Express) and the same problem. I am also using the "model=lg" quirk to have it working.
Everything works as expected when I use the "model=lg" option, except one thing: I have to "reselect" the mic (click on other mic, or in Line-In, and then on the Mic again) in the mixer on every reboot in order to have it working. If I don't do this, the mic doesn't work.

[Daniel T Chen (crimsun)]

Would you both please follow https://wiki.ubuntu.com/Audio/AlsaInfo?

[nikhov (nikhov)]

Ok, i've attached the output of the alsa-info.sh script with the option "model=lg" on.

[nikhov (nikhov)]

And this is the output of the script without the "model=lg" quirk.

[Daniel T Chen (crimsun)]

Enable audible playback through internal speakers of LG P1 Express

[madbiologist (me-again)]

The abovementioned patch is included upstream in kernel 2.6.37 and kernel 2.6.36.3.

[Martin Pitt (pitti)]

Accepted linux into lucid-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

[Martin Pitt (pitti)]

Accepted linux into maverick-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

[Brad Figg (brad-figg)]

This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed' to 'verification-done'.

If verification is not done by one week from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Philip Peitsch (philip-peitsch)]

Just to check, is this patch already applied in natty? The affected laptop for me is currently running natty, and it'd be handy to avoid jumping back to maverick...

[Brad Figg (brad-figg)]

@philip,
    No worries here. It looks like the patch came in via an upstream stable release. That also means that this patch is also in natty.

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 2.6.32-29.58

---------------
linux (2.6.32-29.58) lucid-proposed; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #716551

  [ Upstream Kernel Changes ]

  * net: fix rds_iovec page count overflow, CVE-2010-3865
    - LP: #709153
    - CVE-2010-3865
  * net: ax25: fix information leak to userland, CVE-2010-3875
    - LP: #710714
    - CVE-2010-3875
  * net: ax25: fix information leak to userland harder, CVE-2010-3875
    - LP: #710714
    - CVE-2010-3875
  * net: packet: fix information leak to userland, CVE-2010-3876
    - LP: #710714
    - CVE-2010-3876
  * net: tipc: fix information leak to userland, CVE-2010-3877
    - LP: #711291
    - CVE-2010-3877
  * inet_diag: Make sure we actually run the same bytecode we audited,
    CVE-2010-3880
    - LP: #711865
    - CVE-2010-3880

linux (2.6.32-29.57) lucid-proposed; urgency=low

  [ Steve Conklin ]

  * Tracking Bug
    - LP: #708864

  [ Tim Gardner ]

  * [Config] Set CONFIG_NR_CPUS=256 for amd64 server
    - LP: #706058

  [ Upstream Kernel Changes ]

  * Input: i8042 - introduce 'notimeout' blacklist for Dell Vostro V13
    - LP: #380126
  * tun: avoid BUG, dump packet on GSO errors
    - LP: #698883
  * TTY: Fix error return from tty_ldisc_open()
    - LP: #705045
  * x86, hotplug: Use mwait to offline a processor, fix the legacy case
    - LP: #705045
  * fuse: verify ioctl retries
    - LP: #705045
  * fuse: fix ioctl when server is 32bit
    - LP: #705045
  * ALSA: hda: Use model=lg quirk for LG P1 Express to enable playback and
    capture
    - LP: #595482, #705045
  * nohz: Fix printk_needs_cpu() return value on offline cpus
    - LP: #705045
  * nohz: Fix get_next_timer_interrupt() vs cpu hotplug
    - LP: #705045
  * nfsd: Fix possible BUG_ON firing in set_change_info
    - LP: #705045
  * NFS: Fix fcntl F_GETLK not reporting some conflicts
    - LP: #705045
  * sunrpc: prevent use-after-free on clearing XPT_BUSY
    - LP: #705045
  * hwmon: (adm1026) Allow 1 as a valid divider value
    - LP: #705045
  * hwmon: (adm1026) Fix setting fan_div
    - LP: #705045
  * amd64_edac: Fix interleaving check
    - LP: #705045
  * IB/uverbs: Handle large number of entries in poll CQ
    - LP: #705045
  * PM / Hibernate: Fix PM_POST_* notification with user-space suspend
    - LP: #705045
  * ACPICA: Fix Scope() op in module level code
    - LP: #705045
  * ACPI: EC: Add another dmi match entry for MSI hardware
    - LP: #705045
  * orinoco: fix TKIP countermeasure behaviour
    - LP: #705045
  * orinoco: clear countermeasure setting on commit
    - LP: #705045
  * x86, amd: Fix panic on AMD CPU family 0x15
    - LP: #705045
  * md: fix bug with re-adding of partially recovered device.
    - LP: #705045
  * tracing: Fix panic when lseek() called on "trace" opened for writing
    - LP: #705045
  * x86, gcc-4.6: Use gcc -m options when building vdso
    - LP: #705045
  * x86: Enable the intr-remap fault handling after local APIC setup
    - LP: #705045
  * x86, vt-d: Handle previous faults after enabling fault handling
    - LP: #705045
  * x86, vt-d: Fix the vt-d fault handling irq migration in the x2apic mode
    - LP: #705045
  * x8...

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux - 2.6.35-27.48

---------------
linux (2.6.35-27.48) maverick-proposed; urgency=low

  [ Steve Conklin ]

  * Release Tracking Bug
    - LP: #723335

  [ Upstream Kernel Changes ]

  * thinkpad-acpi: avoid keymap pitfall
    - LP: #722747

linux (2.6.35-27.47) maverick-proposed; urgency=low

  [ Brad Figg ]

  * Release Tracking Bug
    - LP: #716532

  [ Upstream Kernel Changes ]

  * Revert "USB: gadget: Allow function access to device ID data during
    bind()"
    - LP: #714732
  * net: fix rds_iovec page count overflow, CVE-2010-3865
    - LP: #709153
    - CVE-2010-3865
  * Input: fix typo in keycode validation supporting large scancodes
    - LP: #658198
  * net: ax25: fix information leak to userland, CVE-2010-3875
    - LP: #710714
    - CVE-2010-3875
  * net: ax25: fix information leak to userland harder, CVE-2010-3875
    - LP: #710714
    - CVE-2010-3875
  * net: packet: fix information leak to userland, CVE-2010-3876
    - LP: #710714
    - CVE-2010-3876
  * net: tipc: fix information leak to userland, CVE-2010-3877
    - LP: #711291
    - CVE-2010-3877
  * posix-cpu-timers: workaround to suppress the problems with mt exec,
    CVE-2010-4248
    - LP: #712609
    - CVE-2010-4248
  * sys_semctl: fix kernel stack leakage, CVE-2010-4083
    - LP: #712749
    - CVE-2010-4083
  * thinkpad-acpi: lock down size of hotkey keymap
    - LP: #712174
  * thinkpad-acpi: add support for model-specific keymaps
    - LP: #712174
  * thinkpad-acpi: Add KEY_CAMERA (Fn-F6) for Lenovo keyboards
    - LP: #712174
  * x86, hotplug: Use mwait to offline a processor, fix the legacy case
    - LP: #714732
  * fuse: verify ioctl retries
    - LP: #714732
  * fuse: fix ioctl when server is 32bit
    - LP: #714732
  * ALSA: hda: Use position_fix=1 for Acer Aspire 5538 to enable capture on
    internal mic
    - LP: #685161, #714732
  * ALSA: hda: Use model=lg quirk for LG P1 Express to enable playback and
    capture
    - LP: #595482, #714732
  * drm/radeon/kms: don't apply 7xx HDP flush workaround on AGP
    - LP: #714732
  * drm/kms: remove spaces from connector names (v2)
    - LP: #714732
  * drm/radeon/kms: fix vram base calculation on rs780/rs880
    - LP: #714732
  * nohz: Fix printk_needs_cpu() return value on offline cpus
    - LP: #714732
  * nohz: Fix get_next_timer_interrupt() vs cpu hotplug
    - LP: #714732
  * nfsd: Fix possible BUG_ON firing in set_change_info
    - LP: #714732
  * NFS: Fix fcntl F_GETLK not reporting some conflicts
    - LP: #714732
  * sunrpc: prevent use-after-free on clearing XPT_BUSY
    - LP: #714732
  * hwmon: (adm1026) Allow 1 as a valid divider value
    - LP: #714732
  * hwmon: (adm1026) Fix setting fan_div
    - LP: #714732
  * EDAC: Fix workqueue-related crashes
    - LP: #714732
  * amd64_edac: Fix interleaving check
    - LP: #714732
  * ASoC: Fix swap of left and right channels for WM8993/4 speaker boost
    gain
    - LP: #714732
  * ASoC: Fix off by one error in WM8994 EQ register bank size
    - LP: #714732
  * ASoC: WM8580: Fix R8 initial value
    - LP: #714732
  * ASoC: fix deemphasis control in wm8904/55/60 codecs
    - LP: #714732
  * bootmem: Add alloc_bootmem_...