ESS Maestro3 no sound
yongari at rndsoft.co.kr
Wed Jun 29 04:30:39 GMT 2005
On Wed, Jun 29, 2005 at 11:06:09AM +0800, Muzaffar Ariff wrote:
> I've been trying to configure my maestro3 on a dell latitude (C600)
> but can't seem to get it right. Here's what I've done:
> 1. Identified my sound card by loading the sound driver module:
> #kldload snd_driver
> 2. Cat /dev/sndstat to see what sound driver it is:
> FreeBSD Audio Driver (newpcm)
> Installed devices:
> pcm0: <ESS Technology Maestro3> at io 0xd800 irq 5 kld snd_maestro3
> (4p/1r/0v channels duplex default)
> 3. So then I load the driver directly to /boot/loader.conf:
> 4. The I reboot the system and used xmms to play my mp3. It runs and
> can play the file but no sound! Pump up the volume but nothing
> happens. The weird thing is the sound works on Windows. I've search
> the startup messages /var/run/dmesg.boot and found the following:
> pci0: <bridge, PCI-unknown> at device 7.3 (no driver attached)
> pcm0: <ESS Technology Maestro3> port 0xd800-0xd8ff mem 0xf3ffe000-0xf3ffffff irq
> 5 at device 8.0 on pci0
> pcm0: failed: rid 0x10 is ioport, requested 3
> pcm0: [GIANT-LOCKED]
> pcm0: <SigmaTel STAC9721/23 AC97 Codec>
> Now could there be something wrong with the pci0 or the pcm0? Any
> pointers on how to fix this?
While converting maestro3(4) to MPSAFE one I noticed the same thing.
Unloading/reloading the driver fixed it. I guess there are cases that
the hardware were not initialized correctly. But it was hard to
reproduce it on my system and I just met just two times so far.
Due to lack of publicly available documentaion from ESS it's also
difficult to know what is the reason. :-(
Btw, does the issue vanish away when you cold start your system?
You may get better chance if the driver is linked into kernel.
http://www.kr.freebsd.org/~yongari | yongari at freebsd.org
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