Buzzing snd_emu10kx enabled card with r206173

Mark Stapper stark at
Thu Jun 3 18:57:10 UTC 2010

On 05/30/10 08:31, Garrett Cooper wrote:
> Everything I saw there appeared sane (it would have been nice to grab
> the -v output from kldstat, but that's ok...). Let's try doing the
> following:
> 1. Add `options EMU_MTX_DEBUG' to your kernconf.
> 2. Add set the sysctl: dev.emu10kx.0.debug=1 .
> Let's see if anything changes...
> Also, if you could provide some more hardware stats (say dmesg.boot
> and/or devinfo -v) and version stats (I already know that you're
> running amd64 from your kernel config) for the OS that would be
> helpful as well.
> I'm going to try upgrading my kernel and I'll try these steps as well.
> The locking between this driver and some other sound drivers isn't
> exactly the same (interestingly enough this driver uses Giant locking
> for some bits, while the ich one doesn't), and there were some past
> bugs with other branches of *BSD's drivers related to pci bus
> commands, etc; the other BSDs have dramatically different soundsystems
> -- I assume the old school soundsystem, s.t. the issues are probably
> not the same.
> Thanks,
> -Garrett
I've update my kernel, put in the SND_DEBUG flag and set
Everything worked.
Then I unset the flag.
Everything still worked.
Then I did a reboot without the flag in loader.conf
Everything still worked!
If it fails again i'll try to find something usefull in my loggings for you.
Thanks for the help.

More information about the freebsd-multimedia mailing list