gentoo-sources-2.6.15-r5
alsa-driver-1.0.10-r2 (1.0.11_rc* have broken intel-hda)
dmesg output on card insertion:
pccard: CardBus card inserted into slot 0
PCI: Enabling device 0000:07:00.0 (0000 -> 0002)
ACPI: PCI Interrupt 0000:07:00.0[A] -> GSI 18 (level, low) -> IRQ 18
ALSA
/var/tmp/portage/alsa-driver-1.0.10-r2/work/alsa-driver-1.0.10/pci/echoaudio/echoaudio.c:2005:
Card registered: Indigo IO rev.0 (DSP56361) at 0x54000000 irq 18
make.conf:
ALSA_CARDS="hda-intel indigoio usb-audio"
Kernel config attached.
Hope that'll help.
Good luck,
Dmitry.