[SOLVED] snd-hda-intel пищит как ...

Попытался настроить звук через ALSA, и столкнулся со следующей проблемой - при попытке проиграть что-либо, колонки выдают такой противный писк, что аж зубы ноют. И на фоне этого писка предлагается послушать свою любимую музыку :( Подскажите, плз, куда копать.

# uname -a
Linux angllabs 2.6.17-gentoo-r8 #1 SMP Tue Oct 24 21:38:47 MSD 2006 x86_64 Intel(R) Pentium(R) 4 CPU 3.20GHz GNU/Linux

lspci:
00:00.0 Host bridge: Intel Corporation 945G/GZ/P/PL Express Memory Controller Hub (rev 81)
00:01.0 PCI bridge: Intel Corporation 945G/GZ/P/PL Express PCI Express Root Port (rev 81)
00:1b.0 Audio device: Intel Corporation 82801G (ICH7 Family) High Definition Audio Controller (rev 01)
00:1c.0 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 1 (rev 01)
00:1c.3 PCI bridge: Intel Corporation 82801G (ICH7 Family) PCI Express Port 4 (rev 01)
00:1d.0 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #1 (rev 01)
00:1d.1 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #2 (rev 01)
00:1d.2 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #3 (rev 01)
00:1d.3 USB Controller: Intel Corporation 82801G (ICH7 Family) USB UHCI #4 (rev 01)
00:1d.7 USB Controller: Intel Corporation 82801G (ICH7 Family) USB2 EHCI Controller (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev e1)
00:1f.0 ISA bridge: Intel Corporation 82801GB/GR (ICH7 Family) LPC Interface Bridge (rev 01)
00:1f.1 IDE interface: Intel Corporation 82801G (ICH7 Family) IDE Controller (rev 01)
00:1f.2 IDE interface: Intel Corporation 82801GB/GR/GH (ICH7 Family) Serial ATA Storage Controller IDE (rev 01)
00:1f.3 SMBus: Intel Corporation 82801G (ICH7 Family) SMBus Controller (rev 01)
02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168B PCI Express Gigabit Ethernet controller (rev 01)
04:00.0 VGA compatible controller: nVidia Corporation NV43 [GeForce 6600 GT] (rev a2)

# cat /proc/asound/version
Advanced Linux Sound Architecture Driver Version 1.0.13.
Compiled on Oct 27 2006 for kernel 2.6.17-gentoo-r8 (SMP)