Re: [linux-audio-user] Real-time kernel

Hartmut Noack wrote:

> 1.) if the IRQ-script shall work, you must have your soundcard set
> excluselively to an IRQ by using the BIOS-Setup, especially, if your
> Sounddevice shares an IRQ with an active Harddrive, you will get xruns
> even if you let Paul Davis himself set up you software for RT ;-)

I'm on an IBM T41 laptop, questions:

1) It seems my IRQ's are suboptimal:

atte@email-addr-hidden:~$ lspci | grep -i audio
00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM
(ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 01)

atte@email-addr-hidden:~$ cat /proc/interrupts
            CPU0
   0: 10546861 XT-PIC [........N/ 0]-level timer
   1: 37026 XT-PIC [........./ 2]-level i8042
   2: 0 XT-PIC [........N/ 0]-level cascade
   7: 0 XT-PIC [........./ 0]-level parport0
   8: 4 XT-PIC [........./ 0]-level rtc
   9: 1560538 XT-PIC [........./ 0]-level acpi
  11: 1052364 XT-PIC [........./ 0]-level ehci_hcd:usb1,
uhci_hcd:usb2, uhci_hcd:usb3, uhci_hcd:usb4, Intel 82801DB-ICH4, yenta,
yenta, wifi0, radeon@email-addr-hidden:0000:01:00.0
  12: 211280 XT-PIC [........./ 0]-level i8042
  14: 20481 XT-PIC [........./ 0]-level ide0
  15: 63 XT-PIC [........./ 0]-level ide1
NMI: 0
LOC: 0
ERR: 0
MIS: 0

How do I change the IRQ of my sound card (Intel 82801DB-ICH4)? In the
bios? I suffer from bios-fobia, so if "yes" anyone knows if it's
possible on a T41 and if so could give a quick help?

2) If not possible, what would be the next-best solution?

3) I also have an usb soundcard. If possible should usb be put on a
seperate IRQ also for this to perform the best?

-- 
peace, love & harmony
Atte
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