Re: [LAU] Thinkpad R60 for Audio Update - Firewire Conflicts with Audio

Robin Gareus wrote:
> mea wrote:
>
>> Hi,
>> Sorry to bump into the thread like this, but I have 3+ year old R40 and
>> I never managed to make it work with my firewire sound card under linux,
>> I think mainly because of> cat /proc/interrupts
>> 0: 6674809 XT-PIC timer
>> 1: 24 XT-PIC i8042
>> 2: 0 XT-PIC cascade
>> 6: 3 XT-PIC floppy
>> 8: 1 XT-PIC rtc
>> 9: 48 XT-PIC acpi
>> 11: 1744806 XT-PIC uhci_hcd:usb1, uhci_hcd:usb2,
>> uhci_hcd:usb3, ehci_hcd:usb4, yenta, ohci1394, Intel 82801DB-ICH4, eth0,
>> radeon@email-addr-hidden:0000:01:00.0
>> 12: 35 XT-PIC i8042
>> 14: 27840 XT-PIC ide0
>> 15: 20 XT-PIC ide1
>> NMI: 0
>> ERR: 0
>>
>> As you can see, 11 is loaded. My question: In BIOS I see letters(A,B,
>> etc) all assigned to 11. Is it safe to try to change them?
>>
>
> yes, in the worst case you just need to reboot and re-set them..
>
> (hihi; if you dual boot: windows might find some new devices after
> flipping those around; prepare to jockey (not mount) the driver CD/DVD)
>
> ABCD usually correspond do the PCI irq wires . aehm striplines or
> signals. ;) - some bios allow to choose "[voltage]level" or "edge" IRQ
> detection. - not sure if and how that affects rt-linux. i use edge
> detection.
>
> assiging each letter to a different IRQ number and checking the output
> of /proc/interrupts seems like a good idea. try IRQ 3,5,9,11 for example.
>
> you might still be unlucky: the firewire device might share the "wire"
> with some other [inconvenient] device(s).
>
> robin
>
>
hi robin, this is a really nice advice!

after tweaking for some minutes around and rebooting i got this result now:

nowhiskey@email-addr-hidden:~$ cat /proc/interrupts
           CPU0
  0: 1014092 XT-PIC-XT timer
  1: 1101 XT-PIC-XT i8042
  2: 0 XT-PIC-XT cascade
  8: 1 XT-PIC-XT rtc
  9: 32 XT-PIC-XT acpi, uhci_hcd:usb4
 10: 141435 XT-PIC-XT ehci_hcd:usb1, ipw2200,
uhci_hcd:usb3, Intel 82801DB-ICH4
 11: 1 XT-PIC-XT yenta, uhci_hcd:usb2
 12: 32709 XT-PIC-XT i8042
 14: 7164 XT-PIC-XT ide0
 15: 11 XT-PIC-XT ide1
NMI: 0
LOC: 0
ERR: 0
MIS: 0
nowhiskey@email-addr-hidden:~$

since i am only interested in optimizing the yenta, where the multiface
is hanging, i think this is ok (there is nothing pluged into usb, when i
am doing real audio work here).
what do you peoples think about??

if that is ok, as a next, according to tappas.affenbande i coud do:

 chrt -f -p 82 `pidof "IRQ 11"`
chrt -f -p 98 `pidof "IRQ 8"`

jackd is running at 70 (simply adjusted in qjackctl).

cheers,
doc

p.s. sorry for being off-topic, it really has not to do anything with
firewire here...

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Received on Fri Apr 20 20:15:16 2007