At Thu, 15 Nov 2001 15:07:47 -0500,
Paul Winkler wrote:
> 
> On Thu, Nov 15, 2001 at 04:18:41PM +0100, Takashi Iwai wrote:
> > Ok, looks like there were some bugs in nm256 driver.
> > Hopefully fixed on cvs now.  Could you check it?
> > (Sorry, I myself cannot test atm).
> 
> First, very good news:
> aplay works!
> oss emulation works!
> Thanks very much!!!!
 
Wow!

> Now the bad news:
> I was wrong about the freeze fix. :(
 
(one octave lower) Wow... 

> I have this in /etc/modules.conf:
> ## ALSA native device support
> alias char-major-116 snd
> options snd snd_major=116 snd_cards_limit=1
> alias snd-card-0 snd-card-nm256
> options snd-card-nm256 snd_index=0 snd_id="NeoMagic" \
>         snd_vaio_hack=1
> 
> (Side note: the INSTALL doesn't mention it, but snd_vaio_hack needs to be
> set to something... you can't just say "snd_vaio_hack")
> 
> I just tried this:
>  runlevel is 3, no X running;
>  logged in as root;
>  unmounted everything except / and /usr (got tired of fsck!);
>  remount /usr read-only;

Then, now is a good chance to change to reiserfs or ext3 :)

> then I run:
> ./alsasound start
> ./alsasound stop
> ... over and over to make sure it works OK...
> It worked the first 10 times or so.
> Then I get a freeze.
 
Switching the driver so many times - I didn't test before, so this may
likely happen on my environemnt too.

Basically you should use the same address probed by the driver, which
is shown when invoked without buffer_top or vaio_hack option.
I changed it from printd to printk so the probed buffer address will
be always shown in kernel message.

snd_vaio_hack option sets a certain address for VAIO notebook, so it's
not safe for all other machines.

> If I use alsasound as an init script at boot time, it seems much more
> likely to freeze (don't know why).
> 
> I'm not going to work on this anymore just now. I will be reinstalling
> on this machine when my hard-drive upgrade arrives in the next few
> days.  Hopefully by the time I'm ready to try alsa again, you'll have
> your new laptop and can test things yourself...

Well, so until the next week..


ciao,

Takashi

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