[alsa-devel] SB X-Fi driver fixes (Re: Testers wanted: New SB X-Fi driver)

Takashi Iwai tiwai at suse.de
Tue Jun 9 07:39:51 CEST 2009

At Tue, 09 Jun 2009 07:23:56 +0200,
Gernot Kohlhaas wrote:
> Takashi Iwai schrieb:
> > 
> > Also, do you mean that the default output works without 1/3 second
> > distortion?  Or, the distortion happens regardless of your PCM device
> > setup?
> > 
> > I'd like to concentrate on debugging the default setup at first,
> > so better to reduce the risk of brokenness of ladspa plugin.
> > If you get any severe problems with the default setup, please let me
> > know more details.
> > 
> > 
> > thanks,
> > 
> > Takashi
> > 
> No, this distortion happens "everywhere" when I compile the module with
> --debug=full.

That's weird.  Do you get any kernel messages?

> For the crashes: They only happen when I use the LADSPA low pass filter
> AND when I am fast forwarding in xmms. When I don't use fast forwarding,
> everything works fine. But I will try use_system_timer=1 when I get back
> from work today.
> It really seems like the plug-in is doing some weird stuff.

But the plugin itself cannot lead to a system crash.  It's the driver.

Do I understand correctly that your system locks up when this happens,
right?  If yes, the cause might be the mmap mode access.


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