[svlug] Sound on VT8233 AC 97

[Sanatan Rai]

Hello,
	I recently bought a comp with the VT8233 chip set and VIA 82cxxx onboard
sound.

	I compiled ALSA modules for this but get the following messages:

[root at integral root]#  modprobe snd-via82xx;modprobe snd-pcm-oss;modprobe snd-mixer-oss;modprobe snd-seq-oss
[root at integral root]# alsamixer

alsamixer: function snd_ctl_open failed for default: No such file or directory
[root at integral root]# play /usr/share/apps/kbounce/sounds/wallstart.au
sox: Can't open output file '/dev/dsp': No such device
[root at integral root]# lsmod
Module                  Size  Used by    Not tainted
snd-seq-oss            33920   0  (unused)
snd-seq-midi-event      5640   0  [snd-seq-oss]
snd-seq                47472   2  [snd-seq-oss snd-seq-midi-event]
snd-pcm-oss            44452   0  (unused)
snd-mixer-oss          15512   0  [snd-pcm-oss]
snd-via82xx            11660   0  (unused)
snd-pcm                83328   0  [snd-pcm-oss snd-via82xx]
snd-timer              15304   0  [snd-seq snd-pcm]
snd-mpu401-uart         4796   0  [snd-via82xx]
snd-rawmidi            18400   0  [snd-mpu401-uart]
snd-seq-device          6176   0  [snd-seq-oss snd-seq snd-rawmidi]
snd-ac97-codec         36100   0  [snd-via82xx]
snd                    39404   0  [snd-seq-oss snd-seq-midi-event snd-seq snd-pcm-oss snd-mixer-oss snd-via82xx snd-pcm snd-timer snd-mpu401-uart snd-rawmidi snd-seq-device snd-ac97-codec]
soundcore               6532   0  [snd]
abi-cxenix              8636   0  (unused)
abi-svr4               85292   0  [abi-cxenix]
lcall7                  2276   0  [abi-cxenix]
abi-util                1468   0  [lcall7]
via-rhine              15628   1
mii                     2156   0  [via-rhine]
sg                     36556   0  (autoclean)
loop                   12152   0  (autoclean)
nls_iso8859-1           3516   0  (autoclean)
sr_mod                 18136   0  (autoclean)
autofs                 13348   0  (autoclean) (unused)
ipt_REJECT              3736   6  (autoclean)
iptable_filter          2412   1  (autoclean)
ip_tables              14936   2  [ipt_REJECT iptable_filter]
ide-scsi               10512   0
scsi_mod              107176   3  [sg sr_mod ide-scsi]
ide-cd                 33608   1
cdrom                  33696   0  [sr_mod ide-cd]
mousedev                5524   1
keybdev                 2976   0  (unused)
hid                    22244   0  (unused)
input                   5888   0  [mousedev keybdev hid]
usb-uhci               26188   0  (unused)
usbcore                77024   1  [hid usb-uhci]
[root at integral root]# dmesg | tail --lines=36
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1800000]
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1800000]
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1800000]
PCI: Setting latency timer of device 00:11.5 to 64
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1000000]
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1000000]
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1fc0000]
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1fc0000]
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1fc0000]
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1fc0000]
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1fe0000]
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1fe0000]
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1fe0000]
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1fe0000]
ALSA ../../alsa-kernel/pci/ac97/ac97_codec.c:1562: AC'97 0:0 access is not valid [0xffffffff], removing mixer.
Sound device 8 went missing!
Sound device 1 went missing!
ALSA ../alsa-kernel/pci/via82xx.c:1030: AC'97 codec is not ready [0x1fe0000]
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1fe0000]
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1000000]
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1800000]
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1800000]
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1800000]
ALSA ../alsa-kernel/pci/via82xx.c:354: codec_ready: codec 0 is not ready [0x1800000]
PCI: Setting latency timer of device 00:11.5 to 64
<snipped>
[root at integral root]# ls -l /dev/dsp* /dev/mix* /dev/seq*
lrwxrwxrwx    1 root     root            9 Jan 27 23:18 /dev/dsp -> /dev/dsp0
crw-rw-rw-    1 root     root      14,   3 Jan 27 23:18 /dev/dsp0
crw-rw-rw-    1 root     root      14,  19 Jan 27 23:18 /dev/dsp1
crw-rw-rw-    1 root     root      14,  35 Jan 27 23:18 /dev/dsp2
crw-rw-rw-    1 root     root      14,  51 Jan 27 23:18 /dev/dsp3
crw-rw-rw-    1 sanat    root      55,   0 Jul  6  2002 /dev/dsp56k
lrwxrwxrwx    1 root     root           11 Jan 27 23:18 /dev/mixer -> /dev/mixer0
crw-rw-rw-    1 root     root      14,   0 Jan 27 23:18 /dev/mixer0
crw-rw-rw-    1 root     root      14,  16 Jan 27 23:18 /dev/mixer1
crw-rw-rw-    1 root     root      14,  32 Jan 27 23:18 /dev/mixer2
crw-rw-rw-    1 root     root      14,  48 Jan 27 23:18 /dev/mixer3
crw-rw-rw-    1 root     root      14,   1 Jan 27 23:18 /dev/sequencer
lrwxrwxrwx    1 root     root           10 Jan 27 23:18 /dev/sequencer2 -> /dev/music


Snooping around via google I found another person with a similar problem
but no rsolution. On the ALSA site someone left the following comment:

`From looking at the mailing lists and from personal experience, it
does not appear that all devices based on the 8233 chipset are
supported, specifically motherboards (i.e.: MV42N), although PCI audio
cards seem to do better.  Also, removing the default (OSS) sound
support from RedHat 8.0 might be more involved than indicated in the
docs, and is not documented anywhere.  Finally, there are no
documented instructions as to how remove a non-functioning ALSA
install and restore the defaults.

In summary:  Do not try to use this driver on an 8233-based
motherboard unless you can afford to rebuild the Linux install if the
ALSA install fails to work for you.'

The above comment seems a bit strange, because what I can make out is that
somehow /dev/dsp etc are either being locked by some process or are
improperly set, and all I have to do is to fix this.

Suggestions/Comments?

Thanks!

--Sanatan
-- 
Sanatan Rai,                      | E.-mail: sanat at stanford.edu
Dept. of Management Sc. & Engg.   | Home: 100 N. Whisman Road 4316,
Stanford University,              |       Mountain View, Ca 94043.
Stanford, Ca 94305.               | 'phone: (650) 964 0220 (R)
EMail: sanat at stanford.edu                   (650) 736 2109 (O)