Subject: Re: [linux-audio-user] RME Cardbus + multiface
From: derek holzer (derek_AT_x-i.net)
Date: Mon Jan 12 2004 - 14:18:39 EET
Tim,
Tim Blechmann wrote:
> if i use the second pcmcia slot, i can manage to run the hdsp on irq11
> ... anyway, there are quite a few devices on this irq, too (pcmcia,
> on-board sound, usb, eth0) ... on irq5 there are only the pcmcia and the
> usb controller ... i suppose it's not possible to get the hdsp to use
> another irq than the corresponding pcmcia controller ... if i'm wrong,
> please correct me...
A few things:
1) I never got a soundcard running proper on IRQ 5. That could be one
part of the trouble. Currently my IRQ 9 looks like this:
9: 472 XT-PIC acpi, Ricoh Co Ltd RL5c476 II (#2),
usb-uhci, usb-uhci, hdsp, ohci1394, Intel 82801CA-ICH3, eth0
And the card seems to run good. IRQ 9 is about the best IRQ you can get
for sound, although IRQ 9 without having to share it is even better.
2) Often there is a difference between the two PCMCIA slots in a laptop.
One them is a type-1 and one of them is a type-2. I never got results
putting my cardbus in the #1, type-1 slot [which incidentally defaults
to IRQ 5, hmmmmmm]. Also of note is that a type-2 slot monopolizes the
system, and I cannot run a type-1 card in the other slot [Flash memory,
wlan, or whatever...] without a kernel freeze when using the HDSP. Be
curious to know from some guru here why that is...
3) If your BIOS cannot reassign IRQs, you should try booting with
"pci=noacpi" or even "acpi=off" in your grub.conf or lilo.conf. This
will keep the ACPI daemon from choosing IRQs for your hardware, and a
new, better configuration may accimagically arise. I boot with the first
argument, and that is how I got the cardbus on IRQ 9.
4) [This is the extreme solution.] I forget which distro you are using,
but I swear to Allah that I *never* could get my cardbus HDSP running
with Mandrake or Red Hat. The only distros which worked were Debian and
Gentoo [which I use currently]. Voodoo maybe, or it might have something
to do with the amount of stuff that gets recompiled under these two
distros [specifically kernel and modules for PCMCIA], or it might have
to do with some of Man-Hat's "distro-dummy" configuration schemes... who
knows? I only know what works...
Good luck,
D.
-- derek holzer ::: http://www.umatic.nl ---Oblique Strategy # 206: "What most recently impressed you? How is it similar? What can you learn from it? What could you take from it?"
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