no speaker sound on newly-installed ubuntu 10.04

[Robert P. J. Day]

  i just unpacked a refurb'ed gateway NV7915U laptop, and everything
seems to be working fine except for no sound from the built-in
speakers.  sound is fine from the headphone jack.

  from "lspci -v":

00:1b.0 Audio device: Intel Corporation 5 Series/3400 Series Chipset
High Definition Audio (rev 05)
        Subsystem: Acer Incorporated [ALI] Device 031c
        Flags: bus master, fast devsel, latency 0, IRQ 22
        Memory at d4400000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: HDA Intel
        Kernel modules: snd-hda-intel

and from lsmod:

snd_hda_codec_intelhdmi    13090  1
snd_hda_codec_realtek   278890  1
snd_hda_intel          25645  4
snd_hda_codec          85727  3 snd_hda_codec_intelhdmi,snd_hda_codec_realtek,snd_hda_intel
snd_hwdep               6924  1 snd_hda_codec
snd_pcm_oss            41394  0
snd_mixer_oss          16299  1 snd_pcm_oss
snd_pcm                87850  4 snd_hda_intel,snd_hda_codec,snd_pcm_oss
snd_seq_dummy           1782  0
snd_seq_oss            31219  0
snd_seq_midi            5829  0
snd_rawmidi            23388  1 snd_seq_midi
snd_seq_midi_event      7267  2 snd_seq_oss,snd_seq_midi
snd_seq                57417  6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_timer              23553  2 snd_pcm,snd_seq
snd_seq_device          6824  5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
snd                    70978  20 snd_hda_codec_intelhdmi,snd_hda_codec_realtek,snd_hda_intel,snd_hda_codec,snd_hwdep,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
soundcore               8052  1 snd
snd_page_alloc          8500  2 snd_hda_intel,snd_pcm


  i've checked the settings, nothing's muted so i'm open to
suggestions.  i'm sure it's something trivial, i just haven't seen it
yet.

rday

-- 

========================================================================
Robert P. J. Day                               Waterloo, Ontario, CANADA

        Top-notch, inexpensive online Linux/OSS/kernel courses
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