Sorry this is a bit long. Mostly just data. I hope it helps figure this
out. Sort of strange that the chip is identified in one place as a
VIA8233 and in another place as a VIA8235....
On Wed, 2003-05-21 at 04:09, Takashi Iwai wrote:
> At 18 May 2003 17:05:32 -0700,
> Mark Knecht wrote:
> >
> > Hi,
> > I brought up Alsa Friday on a Gentoo platform and used it for most of
> > Friday evening and Saturday in one form or another. Along the way I was
> > building some new kernels to fix some SCSI issues and a few other items,
> > which required that Alsa get rebuilt also as per the Gentoo Alsa
> > instructions. This process went on for most of the day. Later Saturday
> > evening, following who knows how many 'unrelated' changes, Alsa stopped
> > working. The error messages look like this:
> >
> > Wizard root # aplay wave/sequen~1.wav
> > Playing WAVE 'wave/sequen~1.wav' : Signed 16 bit Little Endian, Rate
> > 44100 Hz, Mono
> > aplay: pcm_write:1025: write error: Input/output error
> > Wizard root #
> >
> > or when trying to play a game like frozen-bubble, that app locks up hard
> > and in my console I see:
> >
> > ALSA Lib pcm_hw.c:467:(snd_pcm_hw_prepare)SNDRV_PCM_IOCTL_PREPARE
> > failed:device or resource busy
> >
> > alsaplayer starts to run, sees the CD (I.e. - shows track length) and
> > then won't play the CD.
> >
> > I'll attach a bit of data, but can anyone point me toward what might be
> > causing this?
>
> the chip looks like a VIA8235, so the (first) pcm device supports
> multiple playbacks but with the same sample rate.
> please check whether there is any other app running and using the pcm
> device and if it uses different sample rates (e.g. 48kHz)...
>
>
> Takashi
Takashi-san,
To the best of my knowledge there are no other apps using sound in
any way. The environment is fluxbox, which doesn't use sound. I get the
same results in a console after a cold boot before starting fluxbox
also. I've tried playing 48KHz and 44.1KHz wave files and get the same
results.
There is a strange thing I noticed about how the chip is set up
though. I've loaded the via82xx driver. In /proc/pci the chip identifies
itself as an VIA8233:
Wizard root # grep audio /proc/pci
Multimedia audio controller: Xilinx, Inc. RME Hammerfall DSP (rev
104).
Multimedia audio controller: VIA Technologies, Inc. VT8233 AC97
Audio Controller (rev 80).
Wizard root #
However, in aplay it identifies itself as a VIA 8235:
bash-2.05b$ aplay -l
**** List of PLAYBACK Hardware Devices ****
card 0: 8235 [VIA 8235], device 0: VIA 8235 [VIA 8235]
Subdevices: 4/4
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Subdevice #2: subdevice #2
Subdevice #3: subdevice #3
card 0: 8235 [VIA 8235], device 1: VIA 8235 [VIA 8235]
Subdevices: 1/1
Subdevice #0: subdevice #0
bash-2.05b$
There are no processes running that are obviously usign audio, as far as
I can see:
bash-2.05b$ ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.2 0.0 1352 496 ? S 20:54 0:04 init
root 2 0.0 0.0 0 0 ? SW 20:54 0:00 [keventd]
root 3 0.0 0.0 0 0 ? SWN 20:54 0:00
[ksoftirqd_CPU0]
root 4 0.0 0.0 0 0 ? SW 20:54 0:00 [kswapd]
root 5 0.0 0.0 0 0 ? SW 20:54 0:00 [bdflush]
root 6 0.0 0.0 0 0 ? SW 20:54 0:00
[kupdated]
root 8 0.0 0.0 0 0 ? SW 20:54 0:00 [khubd]
root 12 0.0 0.0 0 0 ? SW 20:54 0:00
[kjournald]
root 36 0.0 0.1 1748 916 ? S 20:54 0:00
/sbin/devfsd /dev
root 843 0.0 0.1 1428 572 ? S 20:54 0:00
/usr/sbin/syslogd -m 0
root 846 0.0 0.1 1472 576 ? S 20:54 0:00
/usr/sbin/klogd -c 3 -2
root 849 0.0 0.1 1472 568 ? S 20:54 0:00
/usr/sbin/crond
root 1089 0.0 0.2 2732 1284 ? S 20:54 0:00
/usr/sbin/sshd
xfs 1242 0.0 0.9 6264 4772 ? S 20:54 0:00 [xfs]
root 1252 0.0 0.2 2288 1236 ? S 20:54 0:00 [login]
root 1253 0.0 0.0 1336 424 vc/2 S 20:54 0:00
/sbin/agetty 38400 tty2 linux
root 1254 0.0 0.0 1336 424 vc/3 S 20:54 0:00
/sbin/agetty 38400 tty3 linux
mark 1322 0.0 0.2 2292 1372 vc/1 S 20:54 0:00 -bash
mark 1331 0.0 0.1 2036 976 vc/1 S 20:55 0:00 /bin/sh
/usr/X11R6/bin/startx
mark 1342 0.0 0.1 2324 624 vc/1 S 20:55 0:00 xinit
/home/mark/.xinitrc -- -deferglyphs 16
root 1343 0.3 2.5 92644 13356 ? R 20:55 0:06 [X]
mark 1361 0.0 0.5 5212 2648 vc/1 S 20:55 0:00
/usr/bin/fluxbox
mark 1560 0.0 0.3 3692 1832 ? S 21:13 0:00
/usr/bin/gconfd-1 12
mark 1628 0.0 0.8 6928 4332 ? R 21:21 0:00 [xterm]
mark 1629 0.0 0.2 2312 1396 pts/0 S 21:21 0:00 bash
mark 1638 0.0 0.1 2664 800 pts/0 R 21:23 0:00 ps aux
My .asoundrc file is as per the web page I Think:
bash-2.05b$ more .asoundrc
pcm.via82xx {
type hw
card 0
}
ctl.via82xx {
type hw
card 0
}
The error again:
bash-2.05b$ aplay jazztrap-5-4-groove-28.wav
Playing WAVE 'jazztrap-5-4-groove-28.wav' : Signed 16 bit Little Endian,
Rate 44100 Hz, Stereo
aplay: pcm_write:1025: write error: Input/output error
bash-2.05b$ su -
Password:
Wizard root # lsmod
Module Size Used by Not tainted
radeon 101572 1
agpgart 11920 3 (autoclean)
ide-cd 27080 0 (autoclean)
cdrom 25984 0 (autoclean) [ide-cd]
snd-via82xx 11692 0
snd-ac97-codec 34624 0 [snd-via82xx]
snd-mpu401-uart 3456 0 [snd-via82xx]
snd-rawmidi 14432 0 [snd-mpu401-uart]
snd-seq-device 4192 0 [snd-rawmidi]
snd-pcm 60928 0 [snd-via82xx]
snd-timer 15240 0 [snd-pcm]
snd 30852 0 [snd-via82xx snd-ac97-codec
snd-mpu401-uart snd-rawmidi snd-seq-device snd-pcm snd-timer]
snd-page-alloc 4908 0 [snd-via82xx snd-pcm]
Wizard root #
### modules-update: start processing /etc/modules.d/alsa
# Alsa 0.9.X kernel modules' configuration file.
# $Header:
/home/cvsroot/gentoo-x86/media-sound/alsa-driver/files/alsa-modules.conf-rc,v 1.1
2002/12/21 06:31:52 agenkin Exp $
# ALSA portion
alias char-major-116 snd
# OSS/Free portion
alias char-major-14 soundcore
##
## IMPORTANT:
## You need to customise this section for your specific sound card(s)
## and then run `update-modules' command.
## Read alsa-driver's INSTALL file in /usr/share/doc for more info.
##
## ALSA portion
alias snd-card-0 snd-via82xx
## alias snd-card-1 snd-ens1371
## OSS/Free portion
alias sound-slot-0 snd-card-0
## alias sound-slot-1 snd-card-1
##
# 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
## OSS/Free portion - card #2
## alias sound-service-1-0 snd-mixer-oss
## alias sound-service-1-3 snd-pcm-oss
## alias sound-service-1-12 snd-pcm-oss
alias /dev/mixer snd-mixer-oss
alias /dev/dsp snd-pcm-oss
alias /dev/midi snd-seq-oss
# Set this to the correct number of cards.
options snd cards_limit=1
### modules-update: end processing /etc/modules.d/alsa
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