On 03/03/2013 03:29 PM, Gabbe Nord wrote:
Hello Jeremy, and thank you so much for your reply!
I disabled SpeedStep in BIOS, and it helped a little, thanks!
So the xruns are not completely gone? And what if you force the Lexicon
to only use 2 ins and outs with -i2 -o2? Could you also post your jackd
command (run JACK and check with ps -eo cmd | grep [j]ackd)
Here's my
interrupts:
zth@zth:~$ cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 43 0 1 1 IO-APIC-edge timer
1: 3 0 0 0 IO-APIC-edge i8042
8: 1 0 0 0 IO-APIC-edge rtc0
9: 0 0 0 0 IO-APIC-fasteoi acpi
12: 4 0 0 0 IO-APIC-edge i8042
23: 412535 22606 20 25 IO-APIC-fasteoi
ehci_hcd:usb1, ehci_hcd:usb2
41: 12871 435 437 292 PCI-MSI-edge ahci
42: 0 0 0 0 PCI-MSI-edge
xhci_hcd
43: 67 9 3 8 PCI-MSI-edge eth0
44: 9 3 1 0 PCI-MSI-edge mei
45: 78 161 80 19 PCI-MSI-edge
snd_hda_intel
46: 87524 15 46 18 PCI-MSI-edge radeon
47: 29 0 0 0 PCI-MSI-edge
snd_hda_intel
NMI: 171 188 137 145 Non-maskable interrupts
LOC: 393823 587985 553269 586297 Local timer interrupts
SPU: 0 0 0 0 Spurious interrupts
PMI: 171 188 137 145 Performance monitoring
interrupts
IWI: 0 0 0 0 IRQ work interrupts
RES: 33948 43230 37004 44438 Rescheduling interrupts
CAL: 4737 2603 2357 2402 Function call interrupts
TLB: 8090 6659 7185 7658 TLB shootdowns
TRM: 0 0 0 0 Thermal event interrupts
THR: 0 0 0 0 Threshold APIC interrupts
MCE: 0 0 0 0 Machine check exceptions
MCP: 116 116 116 118 Machine check polls
ERR: 0
MIS: 0
I tried alsa-reload but it didn't help =(.
Try
sudo modprobe -r snd-usb-audio && sudo modprobe snd-usb-audio
Does that revive MIDI again?
Jeremy
Thanks again for your reply!
On Sun, Mar 3, 2013 at 1:04 PM, Jeremy Jongepier <jeremy@xxxxxxxxxxxxxx>wrote:
On 03/03/2013 11:47 AM, Gabbe Nord wrote:
Hello!
I'm experiencing some weird issues with JACK. I got a new system the other
day, and I'm tweaking it for linux audio only basically. My issues are:
even when dsp load isn't even close to 100%, I get xruns. This only
happens
at lower latencies, but still. My setup is as follows :
Kxstudio 12.04.2
3.2 realtime kernel (tried lowlatency and generic aswell)
Usb sound card Lexicon Omega
Realtimeconfig quickscan shows everything green except cpu governors, but
I'm pretty sure I don't have that on this system? It's an Intel i5 3570k
desktop. Or maybe there's some setting in BIOS equivalent of cpu
governors?
If so that might very well be the problem.
Hello Gabbe,
You can check what governor is in use with:
cat /sys/devices/system/cpu/cpu*/**cpufreq/scaling_governor
And set it to a non-scaling governor with:
echo -n performance | sudo tee /sys/devices/system/cpu/cpu*/**
cpufreq/scaling_governor
You can also disable it in your BIOS, it's probably called something like
SpeedStep. More info: http://wiki.linuxmusicians.**com/doku.php?id=system_
**configuration#cpu_frequency_**scaling<http://wiki.linuxmusicians.com/doku.php?id=system_configuration#cpu_frequency_scaling>
I use JACK at 48khz 3 periods/buffer. I start it via falktx's Cadence.
Any ideas about this?
Please post the output of:
cat /proc/interrupts
Also! When I'm asking for help anyway... I connect my MIDI keyboard via
MIDI in on my sound card, but that suddenly stopped working. The midi out
from the sound card is present in JACK, but it delivers no midi. Any idea
on where to start troubleshooting this?
Did you try other USB ports? Or issueing a:
sudo alsa force-reload
Does that help?
Regards,
Jeremy
Thank you so much for taking the time to read this. Cheers!
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