[PlanetCCRMA] Alsa & OSS probs re:Mark Knecht

[Fernando Lopez-Lezcano]

On Mon, 2005-01-10 at 14:48, nigel henry wrote:
> Hi Mark. Thanks for the help.This is the output from /sbin/lsmod . I/ve
> since stopped the Alsa driver with /etc/rc.d/init.d/alsasound stop. 

Did you by chance get an error from it? The ALSA driver is not stopped
at this point according to the modules listed below. 

> Now
> Music player will play my ripped CD files which seems to verify that the
> OSS driver has still got control of the soundcard. Nigel

You have more than one soundcard, on which one is the sound playing back
when it works?

> Module                  Size  Used by
> snd_seq                39440  2
> snd_emu10k1            71172  4
> snd_rawmidi            17184  1 snd_emu10k1
> snd_pcm                68872  1 snd_emu10k1
> snd_timer              17156  2 snd_seq,snd_pcm
> snd_seq_device          6152  3 snd_seq,snd_emu10k1,snd_rawmidi
> snd_ac97_codec         50436  1 snd_emu10k1
> snd_util_mem            3200  1 snd_emu10k1
> snd_hwdep               6276  1 snd_emu10k1
> snd                    38372  19
> snd_seq,snd_emu10k1,snd_rawmidi,snd_pcm,snd_timer,snd_seq_device,snd_ac97_codec,snd_util_mem,snd_hwdep

All the above are the ALSA modules, not OSS. 

If this is on Fedora Core 2 then OSS should not be a problem, OSS is not
configured by default or even present on a FC2 install. But see below:

> binfmt_misc             7176  1
> parport_pc             19392  1
> lp                      8236  0
> parport                29640  2 parport_pc,lp
> autofs4                10624  0
> sunrpc                101064  1
> ipt_ttl                 1536  1
> ipt_limit               1792  35
> ipt_state               1536  7
> iptable_mangle          2048  0
> ipt_LOG                 4992  1
> ipt_MASQUERADE          2560  0
> ipt_TOS                 1920  0
> ipt_REDIRECT            1664  0
> iptable_nat            17452  2 ipt_MASQUERADE,ipt_REDIRECT
> ipt_REJECT              4736  1
> ip_conntrack_irc       70064  0
> ip_conntrack_ftp       70576  0
> ip_conntrack           24968  6
> ipt_state,ipt_MASQUERADE,ipt_REDIRECT,iptable_nat,ip_conntrack_irc,ip_conntrack_ftp
> iptable_filter          2048  1
> ip_tables              13440  11
> ipt_ttl,ipt_limit,ipt_state,iptable_mangle,ipt_LOG,ipt_MASQUERADE,ipt_TOS,ipt_REDIRECT,iptable_nat,ipt_REJECT,iptable_filter
> 8139too                17792  0
> mii                     3584  1 8139too
> floppy                 47440  0
> sg                     27552  0
> scsi_mod               91344  1 sg
> microcode               4768  0
> dm_mod                 33184  0
> snd_page_alloc          7940  2 snd_emu10k1,snd_pcm

Now, the following two modules, "audio" and "usb_midi", are, I believe,
the usb audio and midi support of OSS. Those modules should be
blacklisted in /etc/hotplug/blacklist (that is, add "audio" and
"usb_midi" on two lines at the end of the file). 

That will prevent this from loading automatically. If anything,
snd-usb-audio (the ALSA usb support module) should be loaded. 

> audio                  36612  0
> usb_midi               19464  0
> soundcore               6112  3 snd,audio,usb_midi
> uhci_hcd               23708  0
> button                  4504  0
> battery                 6924  0
> asus_acpi               8472  0
> ac                      3340  0
> ipv6                  184288  8
> ext3                  102376  2
> jbd                    40216  1 ext3

No other OSS modules found.........
What kernel are you running? ("uname -r" to find out). 
-- Fernando