Re: *!* [linux-audio-user] Picky Shuttle audio chipset conflictin g with other cards... - Linux-audio-user

7 Apr 2004

I've seen that the ice1724 driver (which is based on ice1712) is unable 
to mmap on /dev/dsp.

The trick is to switch the order of your cards so that /dev/dsp is 
attached to your ac97 on-board first, instead of your ice1712. If you 
make 'alias snd-card-0 snd-intel8x0', you'll probably find the game will 
work happily.

later,
Steve

Mr.Freeze wrote:
...
  Hey,
 I'm using an "ice1712" soundcard (with whom I satisfied) on a Shuttle box,
whose
...
  "intel8x0" audio chipset powers I'm
trying to "revive", in order to attempt
...
  again to make the game Enemy Territory work at last,
as it returned the
 following error, when using the better soundcard of the two:

 ------- sound initialization -------
 /dev/dsp: Input/output error
 Could not mmap /dev/dsp
 ------------------------------------

 One reported on the ET forum (on the thread "ET / Linux: no sound!") that
it is
...
  supposed to be due to this "ice1712" driver,
quoting the "Advanced Linux Sound
...
  Architecture - Driver Configuration Guide"

 MMAP on ICE1712 driver
 ----------------------
 ICE1712 supports only the unconventional format, interleaved 10-channels 24bit
...
  (packed in 32bit) format. Therefore you cannot mmap
the buffer as the
 conventional (mono or 2-channels, 8 or 16bit) format on OSS.

 When it comes to set multiple cards, the first audio card only on
 /etc/modules.conf, whichever of the two it is, is installed after the boot-up.
...
  Loading the other card afterwards by hand with
modprobe does work: it is
 detected on /proc/asound/cards.
 Why?

 Here's a snippet of my /etc/modules.conf:

 # ALSA portion
 alias char-major-116 snd
 alias char-major-14 soundcore

 alias snd-card-0 snd-ice1712
 alias snd-card-1 snd-intel8x0

 # Terratec EWX 24/96
 alias sound-slot-0 snd-ice1712
 alias sound-service-0-0 snd-mixer-oss
 alias sound-service-0-1 snd-seq-oss
 alias sound-service-0-3 snd-pcm-oss
 alias sound-service-0-8 snd-seq-oss
 alias sound-service-0-12 snd-pcm-oss
 options snd-card-ice1712 snd_enable
 alias /dev/dsp1 snd-pcm-oss

 # Shuttle Intel Audio Chipset
 alias sound-slot-1 snd-intel8x0
 alias sound-service-1-0 snd-mixer-oss
 alias sound-service-1-1 snd-seq-oss
 alias sound-service-1-3 snd-pcm-oss
 alias sound-service-1-8 snd-seq-oss
 alias sound-service-1-12 snd-pcm-oss
 options snd-intel8x0 snd_enable
 alias /dev/dsp snd-pcm-oss # ET can only route /dev/dsp

 But... even if XMMS, for example, does play sounds when routed to the OSS
 emulated "intel8x0" at /dev/dsp, no sound gets out of it and alsamixer
labels
...
  all volume controls by appending "[Off]".
 Why?

 Two problems to be solved then...

 Cheers,
 Mr°Freeze