#72 No sound on Compaq Presario 700US

Via Audio (17)

This laptop has a VIA Audio Controller, and the
via_audio82cxxx driver detects the audio controller.
Playing sound "looks like" it works, but no sound
comes out of the laptop, either PCM or from the
CD-ROM drive. I have fiddled with the mixer settings
to no end, with no result.

lspci says:

00:07.5 Multimedia audio controller: VIA
Technologies, Inc. AC97 Audio Controller (rev 50)

The only thing in the kernel log that seems abnormal

Nov 30 21:39:45 presario kernel: via_audio: ignoring
drain playback error -512

I can enable the proc device information and let you
know what that says (it seems to be disabled by
default in the mainline kernel, with no CONFIG option
to enable it).

Let me know if you need any additional info.

Thanks, Chris


  • Michal Janik

    Michal Janik - 2001-12-01

    Logged In: YES

    On exactly the same laptop I have exactly the same problem
    :), but:

    1. In fact there is no CD sound, however you can here (only
    in completly silence) some sound coming during KDE start.
    All mixers are set to full volume. I suspect that it means
    that we have (maybe) some mixer problem?

    2. From all kind's of logs:

    00:07.5 Multimedia audio controller: VIA Technologies, Inc.
    VT82C686 [Apollo Super AC97/Audio] (rev 50)

    Via 686a audio driver 1.9.1
    PCI: Found IRQ 11 for device 00:07.5
    IRQ routing conflict for 00:07.5, have irq 5, want irq 11
    PCI: Sharing IRQ 11 with 00:0a.0
    PCI: Sharing IRQ 11 with 00:0b.0
    ac97_codec: AC97 Audio codec, id: 0x4144:0x5361 (Unknown)
    via82cxxx: board #1 at 0x1000, IRQ 5
    via_audio: ignoring drain playback error -11
    Assertion failed! chan->is_active ==
    via_audio: ignoring drain playback error -11
    spurious 8259A interrupt: IRQ7.

    Bye, Michal

  • Julien23

    Julien23 - 2001-12-13

    Logged In: YES

    I see exactly the same behaviour on my Compaq Presario 701FR
    (700 + cdwriter). I did try the via_audio82cxxx from
    2.4.17-pre8 (0.9.1) and Alsa 0.5.12a without success.
    Everything works fine except that no sound comes out the

    I also found this old thread on
    but it didn't fix the problem.

  • Jeff Garzik

    Jeff Garzik - 2001-12-13

    Logged In: YES

    Due to large length of time where Via hardware and engineering
    time were unavailable, the Linux kernel Via audio driver is no
    longer supported by me (Jeff Garzik). My apologies in advance
    for any inconveniences this causes.

    Users are recommended to try the ALSA Via audio drivers at

  • Jeff Garzik

    Jeff Garzik - 2001-12-13
    • status: open --> closed-wont-fix
  • tasso mulzer

    tasso mulzer - 2002-02-06

    Logged In: YES

    Mmmmh ..
    it looks like a widespread problem with Compaq Presario
    700XX Notebooks.
    Maybe, you could find a faster way than me to find, what
    goes wrong and why the Presario doesn't let the sound that
    seems to be generated by the Audio-Chip (you may hear it
    if it's really, really silent around) out of the speakers.
    The idea of an additional mixer that has to be opened
    seems obvious. Maybe the SoundMAX People know more about
    it?! ..
    What made me look up was that the ad1848 driver loaded on
    the notebook and maybe found something - could be, that it
    simply doesn't complain, if there is no ad1848 .. don't

    Now .. I for my part can only hope, there will be someone
    more able with kernel-hacking than me, with a Compaq
    Presario 700XX who will fix the hole.

    Thanks, Tasso ;)

  • Nobody/Anonymous

    Logged In: NO

    Its not just Compaqs! I've got an FIC A360+ (Badged in the UK as a Tiny
    Mediabook) with the same chipset and same problem. Nothing works, not
    ALSA, not the kernel drivers, not Via's own drivers!

    I fiddled with the ac97_codec.c file and managed to persuade it to recognize
    the AD1886 mixer chip. I can now play CDs, and get howl round when I
    open the mic fader. I also get system beeps, once I've opened the mixer in
    KDE (yes, it is unmuted by default!). However, I can't get any .wav or midi
    files to play. No "computer" generated sounds at all.

    Any suggestions, anyone?


  • Nobody/Anonymous

    Logged In: NO

    Is there any activity, or should we consider this thread as
    dead and no results ?
    If someone is zorking on it, please let me know.
    Best regards.

  • Nobody/Anonymous

    Logged In: NO


    just spend some time on this problem, my conclusion:
    If you want it to work, don't try sndconfig, doesn't work.
    Try ALSA, version 0.9 or higher (0.5 not good)
    Distribution I use: Debian

    If anyone still has problems configuring etc. don't bother
    contacting me.

    Kristof Coucke


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