rh 8.0; kernel 2.4.21; sis7012; ac97; i810_audio soundcard problems

[Peter Van Wieren <petervw@xxxxxxxx>]

Hello,

I am running RHL 8.0 on a desk-note computer that has similar audio problems to those mentioned
in Rajesh Menon's post (https://www.redhat.com/archives/sound-list/2003-April/msg00009.html.)  I
didn't see any resolution to the problem posted in the relevant threads, so I'd like to ask for
help.


Problem Summary:
  There is only silence when doing 'play blah.wav', but audio CD's can be
  heard using a tool such as 'kscd'.  The aumix mixer works for the audio CD volume.


Sound Card/System Info:
  SiS962 (SiS7012) with integrated audio controller
  ALC201
  DirectSound 3d accelerator
  SoundBlaster Pro compatible
  AC97 V2.2 compatible


Attempted Corrections:

  I won't list all my attempts to resolve this, the main points are (mostly chronological)

  * After installation I used 'sndconfig' which correctly identifies a PCI sound
    card with SiS7012.

  * world read/write permission has been given to /dev/dsp*

  * 'aumix' successfully controls at master and CD volume, PCM volume is/was
    maximized.

  * I tried to install alsa-project drivers, lib and utils, but without success.

  * I read somewhere SiS7012 was better support in more recent kernels so I
    downloaded the tar archive of kernel 2.4.21, compiled and installed it
    with module support for sound.

  * I had an error from /var/log/messages stating:
      "modprobe: modprobe: Can't locate module sound-service-0-3"
    Which may be because of this line in /etc/modules.conf was a left-over
    from my a previous ALSA attempt.
      alias sound-service-0-3 snd-pcm-oss

    I recompiled and reinstalled alsa-drivers, (though I'm somewhat concerned all
    the doc's in alsa-driver-0.9.5 speak of kernel v2.2.x rather than v2.4.x)
    Anyway, it got rid of the aforementioned error message now that I have
      /lib/modules/2.4.21/kernel/sound/acore/oss/snd-pcm-oss.o

  So I'm at the point of having no error messages appear, the required modules
  appear to be correctly and succesfully installed, the mixer appears to work,
  but there is no digital sound (i.e. silence after "play /usr/share/redhat-config-soundcard/redhat-sample.wav")

  * FYI: /var/log/messages shows ALC200, my hardware is described as ALC201 -- not sure if this is important.

  * FYI: All tests were done without tainting the kernel by loading binary-only
    slmodem soft-modem module.

I'm not sure what may be wrong, or what to try from here without any error messages
remaining to guide me, any advice would be appreciated.

Thanks,

Peter Van Wieren

--------------------------------------------------------------------------------
[root@xxxxx petervw]# tail -13 /var/log/messages
Jul 13 16:14:17 smith kernel: Intel 810 + AC97 Audio, version 0.24, 18:34:38 Jul 12 2003
Jul 13 16:14:17 smith kernel: PCI: Found IRQ 10 for device 00:02.7
Jul 13 16:14:17 smith kernel: PCI: Sharing IRQ 10 with 00:02.6
Jul 13 16:14:17 smith kernel: i810: SiS 7012 found at IO 0xd800 and 0xdc00, MEM 0x0000 and 0x0000, IRQ 10
Jul 13 16:14:18 smith kernel: i810_audio: Audio Controller supports 6 channels.
Jul 13 16:14:18 smith kernel: i810_audio: Defaulting to base 2 channel mode.
Jul 13 16:14:18 smith kernel: i810_audio: Resetting connection 0
Jul 13 16:14:18 smith kernel: ac97_codec: AC97 Audio codec, id: ALG16 (ALC200/200P)
Jul 13 16:14:18 smith kernel: i810_audio: AC'97 codec 0 supports AMAP, total channels = 2
Jul 13 16:18:06 smith kernel: ide-floppy driver 0.99.newide
Jul 13 16:18:06 smith kernel: hdc: attached ide-cdrom driver.
Jul 13 16:18:06 smith kernel: hdc: ATAPI 24X DVD-ROM CD-R/RW drive, 2048kB Cache, UDMA(33)
Jul 13 16:18:06 smith kernel: Uniform CD-ROM driver Revision: 3.12
[root@xxxxx petervw]# /sbin/lsmod
Module                  Size  Used by    Not tainted
ide-cd                 35712   1  (autoclean)
cdrom                  33728   0  (autoclean) [ide-cd]
i810_audio             27624   0
ac97_codec             14632   0  [i810_audio]
soundcore               6468   2  [i810_audio]
autofs                 13364   0  (autoclean) (unused)
ds                      8712   1
yenta_socket           13504   1
pcmcia_core            57280   0  [ds yenta_socket]
sis900                 16876   0  (unused)
ipt_REJECT              4056   6  (autoclean)
iptable_filter          2412   1  (autoclean)
ip_tables              15096   2  [ipt_REJECT iptable_filter]
ohci1394               28808   0  (unused)
ieee1394               63748   0  [ohci1394]
mousedev                5588   2
keybdev                 2944   0  (unused)
hid                    22340   0  (unused)
input                   5792   0  [mousedev keybdev hid]
ehci-hcd               20072   0  (unused)
usb-ohci               21384   0  (unused)
usbcore                77984   1  [hid ehci-hcd usb-ohci]
[root@xxxxx petervw]# cat /etc/modules.conf
alias parport_lowlevel parport_pc
alias eth0 sis900
alias usb-controller usb-ohci
alias usb-controller1 ehci-hcd
alias ieee1394-controller ohci1394
options slmdm country=USA

# ALSA portion
alias char-major-116 snd
alias snd-card-0 snd-intel8x0
# module options should go here

# OSS/Free portion

# card #1
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

alias char-major-212 slmodem
alias slmodem slamrmo
alias sound-slot-0 i810_audio
post-install sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -L >/dev/null 2>&1 || :
pre-remove sound-slot-0 /bin/aumix-minimal -f /etc/.aumixrc -S >/dev/null 2>&1 || :
[root@xxxxx petervw]#


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