Re: RFC: Appropriate device detection for Wine (more advice needed)

[Jeremy White <jwhite@codeweavers.com>]

Okay,

So now I have a patch for Wine that very nicely
has Wine scanning for all cards and devices.  It
even probes for devices that behave badly
(e.g. my winmodem) and strips them out.

But I still have one device on my laptop;
card 0, device 4, that simply does not work
(see details below).

It seems to 'smell' right, but when data is
written to it, the buffer is never emptied.
Writing a sound file to it with aplay hangs
indefinitely; using pcm fills the sound buffer
and then blocks indefinitely.

So I'd like some advice:  Have I just been utterly
unrealistic in trying to scan for all PCM devices
on all cards?  Should I only report device 0 on each
card by default, and require the user to explicitly
request alternate devices?  Is there some way I can
detect that this device is psycho and automatically
strip it out?  What the heck is device 4 on my card?

Any/all advice appreciated.

Thanks,

Jeremy

p.s. Some details on sound card, let me know if more
is relevant:

releveant lspc -v snippet:


00000:00:1f.5 Multimedia audio controller: Intel Corp. 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 01)
         Subsystem: Dell: Unknown device 011d
         Flags: bus master, medium devsel, latency 0, IRQ 7
         I/O ports at b800 [size=256]
         I/O ports at bc40 [size=64]
         Memory at f4fff800 (32-bit, non-prefetchable) [size=512]
         Memory at f4fff400 (32-bit, non-prefetchable) [size=256]
         Capabilities: [50] Power Management version 2


jertop:/proc/asound/card0/pcm4p# cat /proc/asound/card0/pcm4p/info
card: 0
device: 4
subdevice: 0
stream: PLAYBACK
id: Intel ICH - IEC958
name: Intel 82801DB-ICH4 - IEC958
subname: subdevice #0
class: 0
subclass: 0
subdevices_count: 1
subdevices_avail: 1



cat /proc/asound/devices
jertop:/# cat /proc/asound/devices
   0: [0- 0]: ctl
  20: [0- 4]: digital audio playback
  27: [0- 3]: digital audio capture
  26: [0- 2]: digital audio capture
  25: [0- 1]: digital audio capture
  16: [0- 0]: digital audio playback
  24: [0- 0]: digital audio capture
  33:       : timer
  32: [1- 0]: ctl
  48: [1- 0]: digital audio playback
  56: [1- 0]: digital audio capture


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