[mythtv-users] SB Live partially working

Gary Balliet geekofalltrades at shaw.ca
Thu Sep 18 22:44:56 EDT 2003


Mike Davis wrote:

>Hello,
>
>I have a SoundBlaster Live Value using ALSA 0.9.6, driver, lib and utils
>installed for emu10k1.
>
>I can hear proper sound when using mplayer with a video file.
>
>I can hear proper sound with "aplay  /usr/share/sounds/KDE_Startup.wav"
>
>When I try "cat /usr/share/sounds/KDE_Startup.wav > /dev/dsp I hear 'tinny'
>metallic sounds.
>
>When I try "aplay /dev/dspX" I get the same thing or nothing.
>
>How do I tell which /dev/dsp? device the output sound should be sent to?
>
>================================
>
>/etc/modules.conf
># ALSA portion
>alias char-major-116 snd
>alias snd-card-0 snd-emu10k1
>
># module options should go here
>options agpgart agp_try_unsupported=1
>options snd-emu10k1 index=0
>
># OSS/Free portion
>alias char-major-14 soundcore
>alias sound-slot-0 snd-card-0
>
># card #0
>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 /dev/mixer snd-mixer-oss
>alias /dev/dsp snd-pcm-oss
>alias /dev/midi snd-seq-oss
>=================================
>
>lspci -vv
>
>02:0a.0 Multimedia audio controller: Creative Labs SB Live! EMU10k1 (rev 04)
>        Subsystem: Creative Labs CT4850 SBLive! Value
>        Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
>Stepping- SERR+ FastB2B-
>        Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
><TAbort- <MAbort- >SERR- <PERR-
>        Latency: 64 (500ns min, 5000ns max)
>        Interrupt: pin A routed to IRQ 5
>        Region 0: I/O ports at df80 [size=32]
>        Capabilities: [dc] Power Management version 1
>                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
>PME(D0-,D1-,D2-,D3hot-,D3cold-)
>                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>
>02:0a.1 Input device controller: Creative Labs SB Live! MIDI/Game Port (rev
>01)
>        Subsystem: Creative Labs Gameport Joystick
>        Control: I/O+ Mem- BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr-
>Stepping- SERR+ FastB2B-
>        Status: Cap+ 66Mhz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort-
><TAbort- <MAbort- >SERR- <PERR-
>        Latency: 64
>        Region 0: I/O ports at dfe0 [size=8]
>        Capabilities: [dc] Power Management version 1
>                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
>PME(D0-,D1-,D2-,D3hot-,D3cold-)
>                Status: D0 PME-Enable- DSel=0 DScale=0 PME-
>=================================
>
>ls -l /dev/ds*
>lrwxrwxrwx    1 root     root            9 Sep 17 23:49 /dev/dsp ->
>/dev/dsp0
>crw-------    1 mythtv   root      14,   3 Sep 17 23:49 /dev/dsp0
>crw-------    1 mythtv   root      14,  19 Sep 17 23:49 /dev/dsp1
>crw-------    1 mythtv   root      14,  35 Sep 17 23:49 /dev/dsp2
>crw-------    1 mythtv   root      14,  51 Sep 17 23:49 /dev/dsp3
>crw-------    1 mythtv   root      55,   0 Jan 30  2003 /dev/dsp56k
>
>Mike Davis
>
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>mythtv-users at mythtv.org
>http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
>
>  
>
Just a guess but on my live i found that sound quality (which should be 
on /dev/dsp0) really improved when i played with alsa mixer.  Master is 
about 2/3 and pcm is about 3/4.  PCM send - (emu10k1) has all six maxed 
out. *AC97 is 0.  *This is the one setting that really made the sound on 
my live/bttv/ivtv system buggered. The card you use will determine the 
other /dev/dsp*'s you might need to use - search this list for help on 
that or use the card specific lists.

./gary




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