[Realtek ALC889A] ALSA test tone not correctly played back

Please report whether model=mb31 works.

Oh, someone is using my apport sound symptom, nice :-)

@Daniel

This bug effects me to. I would be happy to test but I don't know what or how to do what you mean in comment #2. Could you provide me more detail? Please and thank you :-)

@Amber: try this terminal command "ubuntu-bug sound" to file a separate bug with proper information. Thank you!

@ David I did that - that's how I found out that this is effecting me to. Rather than file a dup of this bug I said "me too" - I don't understand why I need to file a separate bug?

@ David correction I used "ubuntu-bug audio" :-)

added bug Bug #546957 :-) Thanks!

@Amber: Thanks. The subsystems of your codecs don't match (i e you have different hardware), so there is a chance that they are different bugs.

Hi Daniel,

The mb31 model is the one I'm using with Karmic, and works good!

I'm still trying Lucid using the LiveCD, so I cannot try the alternative module.

I'll certainly try it one I'll upgrade!

Thanks!

Hi Daniel,

I can confirm that mb31 works great!

The only improvement I see is to be able to automatically configure the correct model, in order to avoid this configuration for non advanced users.

We can close the bug now, thanks!

Does capture work, too?

Hi Daniel,

I can confirm that sound capture works too!

Thanks

As a newbie, how do you change the model to mb31?

Thanks, Craig

Sorry for the delay. Patch submitted to stable@ and upstream.

Craig, one way is to add the following line to /etc/modprobe.d/alsa-base.conf:

options snd-hda-intel model=mbp31

and reboot.

Craig, I meant model=mb31 previously, *not* mbp31.

I've changed the model over as instructed, but still can't get sound from the internal speaker. Line out works fine. Microphone does not.

I added this

to the bottom of

sudo pico /etc/modprobe.d/alsa-base.conf

# commented out this line options snd-hda-intel model=mbp3
#added this
options snd-hda-intel model=mb31
#finished add

Whole file is attached

The abovementioned patch has been included upstream in kernel 2.6.35-rc2. From the changelog:

commit 26fd74fc01991a18f0e3bd54f8b1b75945ee3dbb
Author: Daniel T Chen
Date: Sun May 30 09:55:23 2010 -0400

    ALSA: hda: Use mb31 quirk for an iMac model

    BugLink: https://launchpad.net/bugs/542550

    Symptom: On the reporter's iMac, in Ubuntu 10.04 LTS neither playback
    nor capture appear audible out-of-the-box.

    Test case: Boot from an Ubuntu 10.04 LTS live cd or from an installed
    configuration and attempt to play or capture audio.

    Resolution: Specify the mb31 quirk for this machine in the codec SSID
    table.

    Reported-and-Tested-By: f3a97
    Cc: <email address hidden>
    Signed-off-by: Daniel T Chen
    Signed-off-by: Takashi Iwai

The abovementioned patch is now upstream in kernel 2.6.32.16.

For my iMac 20" with Realtek ALC889A I've added

options snd-hda-intel model=mb31

to /etc/modprobe.d/alsa-base.conf

and works really well.

Thank you :)

hoping this helps, this is the "lspci -nv" output

SRU Justification

Impact: The upstream process for stable tree updates is quite similar in scope to the Ubuntu SRU process, e.g., each patch has to demonstrably fix a bug, and each patch is vetted by upstream by originating either directly from Linus' tree or in a minimally backported form of that patch.

The 2.6.32.21 upstream stable patch set is now available and contains fixes for this problem. It should be included in the Ubuntu kernel as well.

Related commits in the Lucid repo are:

b0a528b ALSA: hda: Use mb31 quirk for an iMac model

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!

We need some testing of the proposed kernel to see whether this has been resolved - please see comment #24 for information about how to get the proposed kernel.

Thanks

This bug was fixed in the package linux - 2.6.32-25.44

---------------
linux (2.6.32-25.44) lucid-proposed; urgency=low

  [ Brad Figg ]

  * SAUCE: (no-up) Modularize vesafb -- fix initialization
    - LP: #611471

  [ Stefan Bader ]

  * Revert "SAUCE: sync before umount to reduce time taken by ext4 umount"
    - LP: #543617, #585092

  [ Steve Conklin ]

  * Revert "SAUCE: tulip: Let dmfe handle davicom on non-sparc"
    - LP: #607824

  [ Tim Gardner ]

  * [Config] Added ums-cypress to udeb
    - LP: #576066

  [ Upstream Kernel Changes ]

  * Revert "PCI quirk: Disable MSI on VIA K8T890 systems"
    - LP: #607824
  * Revert "PCI quirks: disable msi on AMD rs4xx internal gfx bridges"
    - LP: #607824
  * Revert "(pre-stable) Input: psmouse - reset all types of mice before
    reconnecting"
    - LP: #607824
  * Revert "jbd: jbd-debug and jbd2-debug should be writable"
    - LP: #607824
  * Revert "ext4: Make fsync sync new parent directories in no-journal
    mode"
    - LP: #615548
  * Revert "ext4: Fix compat EXT4_IOC_ADD_GROUP"
    - LP: #615548
  * Revert "ext4: Conditionally define compat ioctl numbers"
    - LP: #615548
  * Revert "ext4: restart ext4_ext_remove_space() after transaction
    restart"
    - LP: #615548
  * Revert "ext4: Clear the EXT4_EOFBLOCKS_FL flag only when warranted"
    - LP: #615548
  * Revert "ext4: Avoid crashing on NULL ptr dereference on a filesystem
    error"
    - LP: #615548
  * Revert "ext4: Use bitops to read/modify i_flags in struct
    ext4_inode_info"
    - LP: #615548
  * Revert "ext4: Show journal_checksum option"
    - LP: #615548
  * Revert "ext4: check for a good block group before loading buddy pages"
    - LP: #615548
  * Revert "ext4: Prevent creation of files larger than RLIMIT_FSIZE using
    fallocate"
    - LP: #615548
  * Revert "ext4: Remove extraneous newlines in ext4_msg() calls"
    - LP: #615548
  * Revert "ext4: init statistics after journal recovery"
    - LP: #615548
  * Revert "ext4: clean up inode bitmaps manipulation in ext4_free_inode"
    - LP: #615548
  * Revert "ext4: Do not zero out uninitialized extents beyond i_size"
    - LP: #615548
  * Revert "ext4: don't scan/accumulate more pages than mballoc will
    allocate"
    - LP: #615548
  * Revert "ext4: stop issuing discards if not supported by device"
    - LP: #615548
  * Revert "ext4: check s_log_groups_per_flex in online resize code"
    - LP: #615548
  * Revert "ext4: fix quota accounting in case of fallocate"
    - LP: #615548
  * Revert "ext4: allow defrag (EXT4_IOC_MOVE_EXT) in 32bit compat mode"
    - LP: #615548
  * Revert "ext4: rename ext4_mb_release_desc() to ext4_mb_unload_buddy()"
    - LP: #615548
  * Revert "ext4: Remove unnecessary call to ext4_get_group_desc() in
    mballoc"
    - LP: #615548
  * Revert "ext4: fix memory leaks in error path handling of
    ext4_ext_zeroout()"
    - LP: #615548
  * Revert "ext4: check missed return value in ext4_sync_file()"
    - LP: #615548
  * Revert "ext4: Issue the discard operation *before* releasing the blocks
    to be reused"
    - LP: #615548
  * Revert "ext4: Fix buffer head leaks after calls to
    ext4_get_inode_loc()"
    - LP: #615548
  * Revert "ex...