C-Media 8378 revision 37 & OPL3 midi

C-Media 8378 revision 37 & OPL3 midi

[Sander van Leeuwen]

Hi,

I have two cmedia cards; a revision 37 & 39. Everything
works well on the rev 39 card, but OPL3 midi is silent
on the rev37.
OPL3 initialization succeeds and there are no clear signs
of any problems. My first guess was that this revision
may have a difference (bug) with regards to the FM
volume. However, testing different mute & volume settings 
shows no improvement.
All the IO registers related to FM appear to be working as
specified in the CMedia docs.

Is this a know problem of the ALSA driver, a hardware bug or 
even a defective OPL3 part in this particular revision?

Thanks,

Sander



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Re: C-Media 8378 revision 37 & OPL3 midi

[Patrick Shirkey]

Sander van Leeuwen wrote:
> Hi,
> 
> I have two cmedia cards; a revision 37 & 39. Everything
> works well on the rev 39 card, but OPL3 midi is silent
> on the rev37.
> OPL3 initialization succeeds and there are no clear signs
> of any problems. My first guess was that this revision
> may have a difference (bug) with regards to the FM
> volume. However, testing different mute & volume settings 
> shows no improvement.
> All the IO registers related to FM appear to be working as
> specified in the CMedia docs.
> 
> Is this a know problem of the ALSA driver, a hardware bug or 
> even a defective OPL3 part in this particular revision?
> 

Can you let us know what you have done to get the midi i/o working? 
Preferably with debugging output. MIDI in ALSA is still a bit of a 
blackart so you may not have correctly setup everything yet.

Also have a look at the LAU guide (see below) and the quicktoots for 
more info on playing MIDI through ALSA.


-- 
Patrick Shirkey - Boost Hardware Ltd.
For the discerning hardware connoisseur
Http://www.boosthardware.com
Http://www.boosthardware.com/LAU/guide/
========================================



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Re: C-Media 8378 revision 37 & OPL3 midi

[Takashi Iwai]

At Fri, 19 Jul 2002 11:17:29 +0200 (CDT),
Sander van Leeuwen wrote:
> 
> Hi,
> 
> I have two cmedia cards; a revision 37 & 39. Everything
> works well on the rev 39 card, but OPL3 midi is silent
> on the rev37.
> OPL3 initialization succeeds and there are no clear signs
> of any problems. My first guess was that this revision
> may have a difference (bug) with regards to the FM
> volume. However, testing different mute & volume settings 
> shows no improvement.

Synth volume and switch?

> All the IO registers related to FM appear to be working as
> specified in the CMedia docs.
> 
> Is this a know problem of the ALSA driver, a hardware bug or 
> even a defective OPL3 part in this particular revision?

the support of opl3 is bad on this driver.
it works somehow on my mine (rev 037) but the sounds are weird.
maybe another (undocumented) initialization step would be necessary.


Takashi


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Re: C-Media 8378 revision 37 & OPL3 midi

[Sander van Leeuwen]

On Fri, 19 Jul 2002 12:33:08 +0200, Takashi Iwai wrote:
>> I have two cmedia cards; a revision 37 & 39. Everything
>> works well on the rev 39 card, but OPL3 midi is silent
>> on the rev37.
>> OPL3 initialization succeeds and there are no clear signs
>> of any problems. My first guess was that this revision
>> may have a difference (bug) with regards to the FM
>> volume. However, testing different mute & volume settings 
>> shows no improvement.
>Synth volume and switch?
Both. I even manually changed the registers during playback.

>> Is this a know problem of the ALSA driver, a hardware bug or 
>> even a defective OPL3 part in this particular revision?
>the support of opl3 is bad on this driver.
It's not bad at all as it is perfect on the rev 39 card.
Well, at least in the driver I ported to OS/2. Don't know about the Linux version
or even the latest code.

>it works somehow on my mine (rev 037) but the sounds are weird.
>maybe another (undocumented) initialization step would be necessary.
Too bad. Maybe I'll find out something soon. If I do, I'll send the results
to this list.

Sander



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current cvs, unresolved symbol in snd-msnd-pinnacle.o

[Fernando Pablo Lopez-Lezcano]

Found this last evening, just confirmed it is still there:

# depmod -ae
depmod: *** Unresolved symbols in  
/lib/modules/2.4.18-11.ll/kernel/drivers/sound/isa/msnd/snd-msnd-pinnacle.o
depmod: 	vfree

-- Fernando


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Re: current cvs, unresolved symbol in snd-msnd-pinnacle.o

[Takashi Iwai]

At Fri, 19 Jul 2002 10:19:48 -0700,
Fernando Pablo Lopez-Lezcano wrote:
> 
> Found this last evening, just confirmed it is still there:
> 
> # depmod -ae
> depmod: *** Unresolved symbols in  
> /lib/modules/2.4.18-11.ll/kernel/drivers/sound/isa/msnd/snd-msnd-pinnacle.o
> depmod: 	vfree

i hope it's fixed on cvs now.  please give a try.


Takashi


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Re: current cvs, unresolved symbol in snd-msnd-pinnacle.o

[Fernando Pablo Lopez-Lezcano]

> > Found this last evening, just confirmed it is still there:
> >
> > # depmod -ae
> > depmod: *** Unresolved symbols in
> > /lib/modules/2.4.18-11.ll/kernel/drivers/sound/isa/msnd/snd-msnd-pinnacle.o
> > depmod: 	vfree
>
> i hope it's fixed on cvs now.  please give a try.

Not there yet, sorry... :-(

# depmod -ae
depmod: *** Unresolved symbols in  
/lib/modules/2.4.18-11.ll/kernel/drivers/sound/isa/msnd/snd-msnd-pinnacle.o
depmod: 	snd_wrapper_vfree

-- Fernando


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Re: current cvs, unresolved symbol in snd-msnd-pinnacle.o

[karsten wiese]

hi,

snd-msnd-pinnacle behaves better now after changing
alsa-kernel/core/sound.c a bit:

(last lines of the file here:)
>>>
  /* wrappers */
#ifdef CONFIG_SND_DEBUG_MEMORY
EXPORT_SYMBOL(snd_wrapper_kmalloc);
EXPORT_SYMBOL(snd_wrapper_kfree);
EXPORT_SYMBOL(snd_wrapper_vmalloc);
EXPORT_SYMBOL(snd_wrapper_vfree);
#endif
#ifdef HACK_PCI_ALLOC_CONSISTENT
EXPORT_SYMBOL(snd_pci_hack_alloc_consistent);
#endif
<<<

Takashi, please put the additional two lines
 EXPORT_SYMBOL(snd_wrapper_vmalloc);
 EXPORT_SYMBOL(snd_wrapper_vfree);
into cvs.

ciao, 
karsten

 --- Fernando Pablo Lopez-Lezcano
<nando@ccrma.Stanford.EDU> schrieb: > > > Found this
last evening, just confirmed it is
> still there:
> > >
> > > # depmod -ae
> > > depmod: *** Unresolved symbols in
> > >
>
/lib/modules/2.4.18-11.ll/kernel/drivers/sound/isa/msnd/snd-msnd-pinnacle.o
> > > depmod: 	vfree
> >
> > i hope it's fixed on cvs now.  please give a try.
> 
> Not there yet, sorry... :-(
> 
> # depmod -ae
> depmod: *** Unresolved symbols in  
>
/lib/modules/2.4.18-11.ll/kernel/drivers/sound/isa/msnd/snd-msnd-pinnacle.o
> depmod: 	snd_wrapper_vfree
> 
> -- Fernando
> 
> 
>
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