Re: [LAU] Issues with JACK

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To: Jeremy Jongepier <jeremy@...>
Cc: <linux-audio-user@...>
Date: Sunday, March 3, 2013 - 2:29 pm

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Hello Jeremy, and thank you so much for your reply!

I disabled SpeedStep in BIOS, and it helped a little, thanks! Here's my

zth@zth:~$ cat /proc/interrupts
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
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
46: 87524 15 46 18 PCI-MSI-edge radeon
47: 29 0 0 0 PCI-MSI-edge
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
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 =(.

Thanks again for your reply!

On Sun, Mar 3, 2013 at 1:04 PM, Jeremy Jongepier wrote:

> On 03/03/2013 11:47 AM, Gabbe Nord wrote:

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Content-Transfer-Encoding: quoted-printable

Hello Jeremy, and thank you so much for your reply!I disabled Speed=
Step in BIOS, and it helped a little, thanks! Here's my interrupts:=
zth@zth:~$ cat /proc/interrupts =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 CPU0=
=A0=A0=A0=A0=A0=A0 CPU1=A0=A0=A0=A0=A0=A0 CPU2=A0=A0=A0=A0=A0=A0 CPU3=A0=A0=
=A0 0:=A0=A0=A0=A0=A0=A0=A0=A0 43=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0 1=A0=A0=A0=A0=A0=A0=A0=A0=A0 1=A0=A0 IO-APIC-edge=A0=A0=A0=
=A0=A0 timer=A0 1:=A0=A0=A0=A0=A0=A0=A0=A0=A0 3=A0=A0=A0=A0=A0=A0=A0=A0=
=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0 IO-AP=
IC-edge=A0=A0=A0=A0=A0 i8042=A0 8:=A0=A0=A0=A0=A0=A0=A0=A0=A0 1=A0=A0=
=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=
=A0=A0 0=A0=A0 IO-APIC-edge=A0=A0=A0=A0=A0 rtc0
=A0 9:=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=
=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0 IO-APIC-fasteoi=A0=
=A0 acpi=A012:=A0=A0=A0=A0=A0=A0=A0=A0=A0 4=A0=A0=A0=A0=A0=A0=A0=A0=A0 =
0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0 IO-APIC-e=
dge=A0=A0=A0=A0=A0 i8042=A023:=A0=A0=A0=A0 412535=A0=A0=A0=A0=A0 22606=
=A0=A0=A0=A0=A0=A0=A0=A0 20=A0=A0=A0=A0=A0=A0=A0=A0 25=A0=A0 IO-APIC-fasteo=
i=A0=A0 ehci_hcd:usb1, ehci_hcd:usb2
=A041:=A0=A0=A0=A0=A0 12871=A0=A0=A0=A0=A0=A0=A0 435=A0=A0=A0=A0=A0=A0=A0 4=
37=A0=A0=A0=A0=A0=A0=A0 292=A0=A0 PCI-MSI-edge=A0=A0=A0=A0=A0 ahci=A042=
:=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=
=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0 PCI-MSI-edge=A0=A0=A0=A0=
=A0 xhci_hcd=A043:=A0=A0=A0=A0=A0=A0=A0=A0 67=A0=A0=A0=A0=A0=A0=A0=A0=
=A0 9=A0=A0=A0=A0=A0=A0=A0=A0=A0 3=A0=A0=A0=A0=A0=A0=A0=A0=A0 8=A0=A0 PCI-M=
SI-edge=A0=A0=A0=A0=A0 eth0
=A044:=A0=A0=A0=A0=A0=A0=A0=A0=A0 9=A0=A0=A0=A0=A0=A0=A0=A0=A0 3=A0=A0=A0=
=A0=A0=A0=A0=A0=A0 1=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0 PCI-MSI-edge=A0=A0=
=A0=A0=A0 mei=A045:=A0=A0=A0=A0=A0=A0=A0=A0 78=A0=A0=A0=A0=A0=A0=A0 161=
=A0=A0=A0=A0=A0=A0=A0=A0 80=A0=A0=A0=A0=A0=A0=A0=A0 19=A0=A0 PCI-MSI-edge=
=A0=A0=A0=A0=A0 snd_hda_intel=A046:=A0=A0=A0=A0=A0 87524=A0=A0=A0=A0=A0=
=A0=A0=A0 15=A0=A0=A0=A0=A0=A0=A0=A0 46=A0=A0=A0=A0=A0=A0=A0=A0 18=A0=A0 PC=
I-MSI-edge=A0=A0=A0=A0=A0 radeon
=A047:=A0=A0=A0=A0=A0=A0=A0=A0 29=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0 PCI-MSI-edge=A0=A0=A0=
=A0=A0 snd_hda_intelNMI:=A0=A0=A0=A0=A0=A0=A0 171=A0=A0=A0=A0=A0=A0=A0 =
188=A0=A0=A0=A0=A0=A0=A0 137=A0=A0=A0=A0=A0=A0=A0 145=A0=A0 Non-maskable in=
terruptsLOC:=A0=A0=A0=A0 393823=A0=A0=A0=A0 587985=A0=A0=A0=A0 553269=
=A0=A0=A0=A0 586297=A0=A0 Local timer interrupts
SPU:=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0 Spurious interruptsPMI:=A0=A0=A0=A0=A0=A0=A0 171=A0=A0=A0=A0=A0=A0=A0 188=A0=A0=A0=A0=A0=A0=
=A0 137=A0=A0=A0=A0=A0=A0=A0 145=A0=A0 Performance monitoring interruptsIWI:=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0 IRQ work interrupts
RES:=A0=A0=A0=A0=A0 33948=A0=A0=A0=A0=A0 43230=A0=A0=A0=A0=A0 37004=A0=A0=
=A0=A0=A0 44438=A0=A0 Rescheduling interruptsCAL:=A0=A0=A0=A0=A0=A0 473=
7=A0=A0=A0=A0=A0=A0 2603=A0=A0=A0=A0=A0=A0 2357=A0=A0=A0=A0=A0=A0 2402=A0=
=A0 Function call interruptsTLB:=A0=A0=A0=A0=A0=A0 8090=A0=A0=A0=A0=A0=
=A0 6659=A0=A0=A0=A0=A0=A0 7185=A0=A0=A0=A0=A0=A0 7658=A0=A0 TLB shootdowns=

TRM:=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=
=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0 Thermal event interrup=
tsTHR:=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=
=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0 Threshold APIC i=
nterruptsMCE:=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=
=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0=A0=A0=A0=A0=A0=A0=A0 0=A0=A0 Machine ch=
eck exceptions
MCP:=A0=A0=A0=A0=A0=A0=A0 116=A0=A0=A0=A0=A0=A0=A0 116=A0=A0=A0=A0=A0=A0=A0=
116=A0=A0=A0=A0=A0=A0=A0 118=A0=A0 Machine check pollsERR:=A0=A0=A0=A0=
=A0=A0=A0=A0=A0 0MIS:=A0=A0=A0=A0=A0=A0=A0=A0=A0 0I tri=
ed alsa-reload but it didn't help =3D(.Thanks again for your re=
On Sun, Mar 3, 2013 at 1:04 PM, Jeremy Jonge=
pier <> wrote:
On 03/03/2013 11:47 AM, Gabbe Nord wrote:


I'm experiencing some weird issues with JACK. I got a new system the ot=
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 hap=
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 govern=
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/=

You can also disable it in your BIOS, it's probably called something li=
ke SpeedStep. More info: http://=

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?



Thank you so much for taking the time to read this. Cheers!

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Messages in current thread:
[LAU] Issues with JACK, Gabbe Nord, (Sun Mar 3, 10:47 am)
Re: [LAU] Issues with JACK, Jeremy Jongepier, (Sun Mar 3, 12:04 pm)
Re: [LAU] Issues with JACK, Gabbe Nord, (Sun Mar 3, 2:29 pm)
Re: [LAU] Issues with JACK, Len Ovens, (Sun Mar 3, 4:01 pm)
Re: [LAU] Issues with JACK, Gabbe Nord, (Mon Mar 4, 11:27 am)
Re: [LAU] Issues with JACK, Gabriel Beddingfield, (Tue Mar 5, 4:45 pm)
Re: [LAU] Issues with JACK, Jeremy Jongepier, (Mon Mar 4, 1:44 pm)
Re: [LAU] Issues with JACK, Peder Hedlund, (Mon Mar 4, 1:39 pm)
Re: [LAU] Issues with JACK, Jeremy Jongepier, (Sun Mar 3, 2:41 pm)