-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 David Froseth schrieb: > I went into the BIOS of my Gigabyte GA-965P-DS3 mobo and I changed the > PCI1 IRQ Assignment from "Auto" to "9". When I checked /proc/interrupts > , the ICE1712 us still at 74. > any ideas? Also the video card fits in > the PCI Express x16 slot. There is no IRQ Assignment option for this > slot in the BIOS. The command 'lspci -vvv' lists the nvidia card: > > 01:00.0 VGA compatible controtter: nVidia ... > Interrupt: pin A routed to IRQ 15 > > The IRQ number 15 does not show in the /proc/interrupts file. Why? I do > not recognize any of the items in the /proc/interrupts list as being the > video card. 'lspci -vvv' also shows: > > 05:00.0 Multimedia audio controller: VIA .... ICE1712 ... > Interrupt: pin A routed to IRQ 74 > > It seems the BIOS change did not work on the sound card. > The interrupts are abstracted by acpi, to have the BIOS-Settings you made reflected in /proc/interrupts you need to start your system with acpi=no - this must be put in /boot/grub/menu.lst somewhat like this: kernel /boot/vmlinuz-2.6.15-26-386 root=/dev/hda6 ro acpi=no splash BUT: if the system behaves as you wish now, there is no need to abandon acpi. To find out, If the IRQ-thing is basically set OK is simple enough: In the most cases the M-Audio does not work if it has to share its IRQ - so if it works OK playing an ogg-file with xmmms via alsa the card should be set up OK. > How can I find out if I have installed the low-latency kernel? try : :~$ uname -a good luck ;-) HZN > > Thanks, > Dave > > > > Hartmut Noack wrote: > > David Froseth schrieb: > >>>> Geoff, >>>> >>>> >>>> By changing the the Periods/Buffer to 3, and the Frames/Period to >>>> 512, I have a latency of 32 msec, and I am getting very few xruns. I am >>>> now recording digital tracks for the first time! Thank you! I hope to >>>> improve this latency after getting Ubuntu Studio all set up and working. > > > You can simply install kernel-lowlatency from universe. With this one I > run 2 Systems (one with GF7500-Graphics, both with ICE1712-M-Audiocards) > with quite good Results: > > 128/2 - 5.8ms est. latency > about 5 xrus in an 8h-Session with Ardour plus few plugins > about 5 xruns/h with ZynaddsubFX, jamin, jackrack with 5 plugins, seq24, > rosegarde, Ardour2 all at the same time... > > If used with some caution the systems can run with less then 2ms est. > latency > > > >>>> My /proc/interrupts folder now shows the Delta 1010 card: >>>> >>>> $ cat /proc/interrupts >>>> CPU0 CPU1 >>>> 0: 1945465 0 IO-APIC-edge timer >>>> 1: 7 0 IO-APIC-edge i8042 >>>> 7: 0 0 IO-APIC-edge parport0 >>>> 8: 3 0 IO-APIC-edge rtc >>>> 9: 1 0 IO-APIC-level acpi >>>> 50: 2 0 IO-APIC-level uhci_hcd:usb4, ehci_hcd:usb7 >>>> 58: 9892 0 PCI-MSI sky2 >>>> 66: 26115 0 IO-APIC-level HDA Intel >>>> 74: 1573081 0 IO-APIC-level ICE1712 >>>> 169: 69166 0 IO-APIC-level ide0, uhci_hcd:usb2 >>>> 177: 105201 0 IO-APIC-level libata, libata, libata, >>>> ohci1394, uhci_hcd:usb5 >>>> 225: 0 0 IO-APIC-level ehci_hcd:usb1, uhci_hcd:usb6 >>>> 233: 0 0 IO-APIC-level uhci_hcd:usb3 >>>> NMI: 0 0 >>>> LOC: 1945329 1945329 >>>> ERR: 0 >>>> MIS: 0 >>>> >>>> >>>> >>>> I assume the ICE1712 is the Delta 1010's chip. > > > correct! > > >>>> Is there a way to remap > > > You should map the slot of the M-Audio to a specific IRQ (pref. 9, 10, > or 11...) look here for details: > > http://lowlatency.linuxaudio.org/ > > This must be done in the BIOS. > If this not helps I would consider to disable the Parallell Port (unless > you use a device antique enough to have a parport-connecion only ;-) ) > and then the HDA-Intel. > > Rule of thumb: dead men tell no tales - disabeling everything, that is > not really needed is allways a good idea...;-) > > >>>> or change its interrupt priority? > > > there is a tool from Rui Nuno Capela to do that it did not help much on > my machines but is worth the try anyway... It is available for OpenSuse > via Jacklab (on wich I used it...), yet I dont know for now, where to > get it for Debianoids... > > good luck ;-) > > HZN > _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user >> >> >> > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user@xxxxxxxxxxxxxxxxxxxx > http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.3 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFGL5nk1Aecwva1SWMRAnLRAJ4yNDJqvLm/+eBeNDynEQBgfDGm7ACfaRAD srWavMQp0iz8+wTzHSqYAnQ= =Ry/Y -----END PGP SIGNATURE----- _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/mailman/listinfo.cgi/linux-audio-user
