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Hi, |
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|
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On Fri, 12 Oct 2007 09:50:16 +0800 |
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"Chuanwen Wu" <wcw8410@×××××.com> wrote: |
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|
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> > No, /dev/dsp is OSS stuff. Aplay shouldn't use that. But it makes me |
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> > wonder whether snd_pcm_oss is loaded? |
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> Yes,have loaded it: |
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> $ lsmod | grep snd_pcm_oss |
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> snd_pcm_oss 39648 0 |
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> snd_mixer_oss 14912 1 snd_pcm_oss |
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> snd_pcm 73800 2 snd_pcm_oss,snd_hda_intel |
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> snd 50216 6 |
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> snd_seq,snd_pcm_oss,snd_mixer_oss,snd_hda_intel,snd_pcm,snd_timer |
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|
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Odd. /dev/dsp should be present under these circumstances. But the |
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other things below explain that: |
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|
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> I am sure I have re-run alsaconf and both the /etc/asound.state and |
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> /var/lib/alsa/asound.state 's content are: |
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> # cat /var/lib/alsa/asound.state |
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> state.Intel { |
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> control { |
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> } |
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> } |
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|
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Hm, so it seems there were problems with the mixer at that stage, too. |
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That file should contain settings for the various controls. |
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|
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> $ cat /proc/asound/cards |
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> 0 [Intel ]: HDA-Intel - HDA Intel |
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> HDA Intel at 0xfe9fc000 irq 21 |
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|
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So the kernel is interfacing it correctly, but only in parts: |
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|
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> $ cat /proc/asound/devices |
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> 0: [ 0] : control |
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> 1: : sequencer |
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> 33: : timer |
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> |
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> Here is the output of strace aplay and I hope it dose not bother you |
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> and I also attach it as a annex. |
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> [...] |
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> open("/dev/snd/pcmC0D0p", O_RDWR|O_NONBLOCK) = -1 ENOENT (No such file |
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> or directory) |
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|
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The playback and capture devices are completely missing, and udev |
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therefore didn't create /dev/snd/pcmC0D0p (PCM, card 0, device 0, |
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playback channel). The only explanation I can suggest is |
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broken/incomplete kernel/alsa-drivers support for your device. Does the |
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machine have BIOS settings for sound? What about the audio related |
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kernel log output? |
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|
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In any case, you should probably use the separate alsa-driver from |
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portage, preferably the newest (unstable in portage) version. There |
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were many changes (some of them adding support for more devices for the |
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hda driver) that are not yet in the kernel ALSA tree. |
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|
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-hwh |
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-- |
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