REGRESSION: Sound's decreasing when headphones are plugged - Kernel

This is a discussion on REGRESSION: Sound's decreasing when headphones are plugged - Kernel ; Hi! I've got a Dell Inspiron 1525 laptop and I've got a sound issue since the kernel 2.6.26 upgrade. The sound works fine with the laptop speakers, but when I plug my headphones the sound is decreasing until there's nothing ...

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Thread: REGRESSION: Sound's decreasing when headphones are plugged

  1. REGRESSION: Sound's decreasing when headphones are plugged

    Hi!

    I've got a Dell Inspiron 1525 laptop and I've got a sound issue since
    the kernel 2.6.26 upgrade.

    The sound works fine with the laptop speakers, but when I plug my
    headphones the sound is decreasing until there's nothing to hear. The
    decrease lasts less than 10 seconds. I use ALSA, KDE4 (but the same is
    in clean console) and my sound module is snd_hda_intel.

    When I unplug the headphones the sound doesn't come back. Alsamixer
    says that the level is on top but I can't hear anything.

    The only way to make it work is to restart the computer. Restarting
    the alsa daemon doesn't work.

    I think that it might come from the new kernel since it used to work
    before. It also doesn't work with 2.6.27-rc6-git2, but works with
    2.6.25.17.

    Also, there's no info in dmesg whet I plug/unplug the headphones,
    although I've compiled it with ALSA debug.

    Thanks.
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  2. Re: REGRESSION: Sound's decreasing when headphones are plugged

    It seems that automatic identifying in ALSA is broken or changed. When
    I added line

    options snd-hda-intel model=dell-3stack

    to /etc/modprobe.d/alsa-base

    everything began to work fine.
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  3. Re: REGRESSION: Sound's decreasing when headphones are plugged

    At Sat, 13 Sep 2008 01:03:44 +0300,
    Oleksandr Natalenko wrote:
    >
    > It seems that automatic identifying in ALSA is broken or changed. When
    > I added line
    >
    > options snd-hda-intel model=dell-3stack
    >
    > to /etc/modprobe.d/alsa-base
    >
    > everything began to work fine.


    Could you run alsa-info.sh with --no-upload option for both with and
    without model=dell-3stack option, and attach the generated files?
    The script is found as
    http://www.alsa-project.org/alsa-info.sh

    The model option with STAC codec usually changes only the default pin
    configurations. Some pin config changes might hit you.


    thanks,

    Takashi
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  4. Re: REGRESSION: Sound's decreasing when headphones are plugged

    At Sun, 14 Sep 2008 01:47:44 +0300,
    Oleksandr Natalenko wrote:
    >
    > When I boot without option, ALSA selects "dell-bios" model.
    >
    > BTW, logs are in attach, as you've requested.


    Thanks. I put the following simple fix to the next pull request.


    Takashi

    From 24918b61b55c21e09a3e07cd82e1b3a8154782dc Mon Sep 17 00:00:00 2001
    From: Takashi Iwai
    Date: Tue, 30 Sep 2008 12:58:54 +0200
    Subject: [PATCH] ALSA: hda - Fix model for Dell Inspiron 1525

    Dell Inspiron 1525 seems to have a buggy BIOS setup and screws up
    the recent codec parser, as reported by Oleksandr Natalenko:
    http://lkml.org/lkml/2008/9/12/203

    This patch adds the working model, dell-3stack, statically.

    Signed-off-by: Takashi Iwai
    Cc:

    diff --git a/sound/pci/hda/patch_sigmatel.c b/sound/pci/hda/patch_sigmatel.c
    index ad994fc..f3da621 100644
    --- a/sound/pci/hda/patch_sigmatel.c
    +++ b/sound/pci/hda/patch_sigmatel.c
    @@ -1683,8 +1683,8 @@ static struct snd_pci_quirk stac927x_cfg_tbl[] = {
    /* Dell 3 stack systems with verb table in BIOS */
    SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x01f3, "Dell Inspiron 1420", STAC_DELL_BIOS),
    SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x0227, "Dell Vostro 1400 ", STAC_DELL_BIOS),
    - SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x022f, "Dell ", STAC_DELL_BIOS),
    SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x022e, "Dell ", STAC_DELL_BIOS),
    + SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x022f, "Dell Inspiron 1525", STAC_DELL_3ST),
    SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x0242, "Dell ", STAC_DELL_BIOS),
    SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x0243, "Dell ", STAC_DELL_BIOS),
    SND_PCI_QUIRK(PCI_VENDOR_ID_DELL, 0x02ff, "Dell ", STAC_DELL_BIOS),
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  5. Re: REGRESSION: Sound's decreasing when headphones are plugged

    2008/9/30 Takashi Iwai :
    >
    > Thanks. I put the following simple fix to the next pull request.


    Thanks!
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