[LAU] xruns from GeForce 7300 GS video card

[David Froseth]

Geoff,
     Thanks for the information.  I have recieved my Delta 1010 and it 
was very easy to setup in qjackctl.  I just chose "hw:1 M Audio Delta 
1010" for Input Device and Output Device.  It also works if I choose 
"hw:1,0 ICE1712 multi".  Could you or someone else tell me what the 
difference is?

     In the Qjackctl settings box, I clicked the Realtime box and set 
the priority to 79.  When I restart qjackctl, it shuts down with error 
messages:

In realtime mode (-R) the client timeout must be smaller than the 
watchdog timeout (5000ms).

	Could someone tell me what this means and if I can adjust or fix the 
settings?  For now, I just unclicked the Realtime box in Settings.


     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.

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.  Is there a way to remap 
or change its interrupt priority?

Thanks,

Dave

Geoff Beasley wrote:

 > On Friday 20 April 2007 16:28:00 David Froseth wrote:
 >
 > ok,  8 usb's, firewire, sata, etc and dual core or dual cpu. your 
system has a lot of devices but not one of them is your gpu. if you're 
using the nv driver then that would explain it as it doesn't use an 
intetrupt ( if i remember correctly. correct me if i'm wrong ;) )
 >
 >
 >> I do not undersand how to read all of the info in this printout.  Can
 >> anybody tell me where the video card and the mobo's sound card are in
 >
 >
 >
 > your soundcard is the hda device. if you're running jack with a 
period size of 2  that may account for your xruns behaviour. these chips 
are notorious.
 >  ...change it to 3.
 >
 > also ensure your you are running jack with a priority of around 79. i 
assume you use qjackctl ? both of these parameters are on the opening 
page under setup>settings.... also use 48khz sample rate.. otherwise it 
may be re-sampling on the fly.
 >
 >
 >
 >> this list?  I have ordered a M-Audio Delta 1010 sound card, which is on
 >> the way.  But currently I am using the mobo's built in sound card.
 >
 >
 >
 > good choice. very well supported :)
 >
 >
 >> Most of the feedback from all of you is above my head at this point.
 >> Can anybody guide me through getting the video behind the sound card in
 >> the IRQ?  Should I wait until I get the Delta 1010 before I start all of
 >> this?
 >
 >
 >
 > you have to use apic, so interupt sharing is just gonna happen. apic 
is getting better tho, so with just one card you may find it will work 
fine.... and get that nvidia driver back in there when you get your 1010.
 >
 > hth,
 >
 > g.
 >
 >
 >
 >
 >