troubles with Maestro-2E on FreeBSD 6.0

[b10nd3]

I'm  having the I'v got troubles with my Maestro-2E on Toshiba 4030 CDT
laptop running FreeBSD 6.0 (everything works fine with WinXP).
I've tried to boot with/without acpi, with/without "device sound"
compiled in kernel, result the same - no sound. On FreeBsd 4.4 all
works well.

pcm0: <ESS Technology Maestro-2E> port 0xfc00-0xfcff irq 11 at device 12.0 on pci0
pcm0: agg_rdcodec() RW_DONE timed out.
...skipped...
pcm0: agg_wrcodec() PROGLESS timed out.
pcm0: <Asahi Kasei AK4540 AC97 Codec>
pcm0: agg_rdcodec() PROGLESS timed out.
pcm0: agg_wrcodec() PROGLESS timed out.
pcm0: agg_wrcodec() PROGLESS timed out.
pcm0: agg_wrcodec() PROGLESS timed out.
pci0: Failed to set ACPI power state D2 on \\_SB_.PCI0.SUND: AE_BAD_PARAMETER

Can somebody help?