Subject: Re: [linux-audio-user] audiophile 2496 - spdif in
From: wes schreiner (wes_AT_infosink.com)
Date: Fri Oct 10 2003 - 02:32:52 EEST
Rick Taylor wrote:
>On Thu, 09 Oct 2003 07:49:02 -0500
>"wes schreiner" <wes_AT_infosink.com> wrote:
>
>
>>Robert Jonsson wrote:
>>
>>
>>>Thursday 09 October 2003 12.26 skrev wes schreiner:
>>>
>>>
>>>
>>>>jordan muscott wrote:
>>>>
>>>>
>>>>
>>>>>Ok to be honest I'm not gonna switch distros...... but are you saying
>>>>>that Redhat offers you extra software that allows you to change the
>>>>>IRQs that your pci cards are on?
>>>>>
>>>>>
>>>>There is no such software on any distro. Your motherboard's BIOS decides
>>>>
>>>>
>
>http://www.ibiblio.org/mdw/HOWTO/Serial-HOWTO-8.html#ss8.1
>
>
OK, I forgot about lspnp/setpnp and lspci/setpci. I use lspnp/setpnp on
my IBM Thinkpad 600E to turn the external serial port on and off, among
other things. lspnp/setpnp require a kernel with PNP support compiled
in. Kernel 2.4 mainline doesn't have this yet, but it is in the -ac
patches and also in the kernel that some distros have (Redhat has it I
think, but Debian doesn't). 2.6 has PNP support.
The support for using lspci/setpci is in all 2.4.x kernels I think, but
it doesn't always do what you want. I have a Zoran 36057 video capture
device sitting on IRQ 10, same as my sound card. IRQ 9 is unused (no
ACPI), so I just tried "setpci -v -s 03:09.0 INTERRUPT_LINE=09" to
change its IRQ. lspci -v still says it is at IRQ 10, but lspci -b -v
says it is at IRQ 9. Which is it? OK, I modprobe zr36067 and the module
loads, and now both lspci -v and lspci -v -b agree that the Zoran chip
is at IRQ 10, so nothing changed. *Sigh* I suppose setpci will work in
some cases, with some cards, but it sure isn't a panacea.
wes
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