[ltp] T40 elusive ALSA problem: sound not working in 2.6.11-rc2

[Milan Jurik]

Hi,

   probably known problem:

http://www.ussg.iu.edu/hypermail/linux/kernel/0501.3/1108.html

   Best regards,

             Milan Jurik

On Fri, 28 Jan 2005, Bob Alexander wrote:

> Friends,
> this is really elusive.
>
> Same machine T40 with 2.6.10 sounds works fine.
>
> With 2.6.11-rc2 here is the situation:
>
> 1) alsaconf configures correctly an intel8x0 card
> 2) alsamixer shows card 82801DB-ICH4 with AD1981B chip. Volumes are high and 
> not muted
> 3) alsactl restore gives a warning "set_control: 930: warning name mismatch 
> ... (external apmplifier/headphone ...) for control #26
> 4) volume buttons (Thinkpad T40 are all the way up), GNOME volume applet is 
> 100%
> 5) XMMS shows an mp3 playing with the equalizer moving but TOTAL SILENCE
>
> lsmod under 2.6.11-rc3 shows:
> snd                    55460  8 
> snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
> snd_intel8x0           33600  1
> snd_ac97_codec         78520  1 snd_intel8x0
> snd_pcm_oss            54304  0
> snd_mixer_oss          20608  1 snd_pcm_oss
> snd_page_alloc         10052  2 snd_intel8x0,snd_pcm
> snd_pcm                96840  3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
> snd_timer              26564  1 snd_pcm
>
> while in the working 2.6.10 it shows a seemingly identical:
>
> snd                    54692  8 
> snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_timer
> snd_intel8x0           33312  1
> snd_ac97_codec         77152  1 snd_intel8x0
> snd_pcm_oss            54244  0
> snd_mixer_oss          20352  1 snd_pcm_oss
> snd_page_alloc          9988  2 snd_intel8x0,snd_pcm
> snd_pcm                98312  3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
> snd_timer              25860  1 snd_pcm
>
> So what next ???????????????????????????
>
> TIA,
> Bob
>