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@pci: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@murija2:~$ 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@murija2:~$
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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