CPU0 CPU1 CPU2 CPU3 CPU4 CPU5 CPU6 CPU7
0: 26 0 0 893152 0 0 0 0 IO-APIC-edge timer
1: 22 0 0 31 5062 0 0 0 IO-APIC-edge i8042
8: 0 0 0 1 0 0 0 0 IO-APIC-edge rtc0
9: 729 0 0 148 0 0 0 0 IO-APIC-fasteoi acpi
12: 74387 0 0 173 0 0 0 0 IO-APIC-edge i8042
16: 11853419 0 0 0 0 0 93 0 IO-APIC-fasteoi ehci_hcd:usb1, brcmsmac
21: 613255 0 0 241 0 0 0 0 IO-APIC-fasteoi ehci_hcd:usb2
40: 1664049 0 0 0 0 0 0 0 HPET_MSI-edge hpet2
41: 0 373735 0 0 0 0 0 0 HPET_MSI-edge hpet3
42: 0 0 244881 0 0 0 0 0 HPET_MSI-edge hpet4
43: 0 0 0 270616 0 0 0 0 HPET_MSI-edge hpet5
44: 0 0 0 0 1035760 0 0 0 HPET_MSI-edge hpet6
45: 0 0 0 0 0 0 0 0 PCI-MSI-edge eth0
46: 6781 5882 0 0 424359 0 0 0 PCI-MSI-edge ahci
47: 0 0 1 0 0 0 0 0 PCI-MSI-edge xhci_hcd
48: 0 0 0 0 0 0 0 0 PCI-MSI-edge xhci_hcd
49: 0 0 0 0 0 0 0 0 PCI-MSI-edge xhci_hcd
50: 0 0 0 0 0 0 0 0 PCI-MSI-edge xhci_hcd
51: 0 0 0 0 0 0 0 0 PCI-MSI-edge xhci_hcd
52: 0 0 0 0 0 0 0 0 PCI-MSI-edge xhci_hcd
53: 0 0 0 0 0 0 0 0 PCI-MSI-edge xhci_hcd
54: 0 0 0 0 0 0 0 0 PCI-MSI-edge xhci_hcd
55: 0 0 0 0 618 0 0 181167 PCI-MSI-edge radeon
56: 0 0 0 0 0 255 940 0 PCI-MSI-edge hda_intel
57: 0 0 0 0 0 624 0 0 PCI-MSI-edge hda_intel
NMI: 0 0 0 0 0 0 0 0 Non-maskable interrupts
LOC: 146 135 118 101 83 292119 262176 323651 Local timer interrupts
SPU: 0 0 0 0 0 0 0 0 Spurious interrupts
PMI: 0 0 0 0 0 0 0 0 Performance monitoring interrupts
IWI: 0 0 0 0 0 0 0 0 IRQ work interrupts
RES: 8835 2130 1206 621 13366 2364 1354 679 Rescheduling interrupts
CAL: 848 2123 2403 2402 1147 2676 2523 2331 Function call interrupts
TLB: 12484 8516 5371 4185 16856 5432 4059 2812 TLB shootdowns
TRM: 0 0 0 0 0 0 0 0 Thermal event interrupts
THR: 0 0 0 0 0 0 0 0 Threshold APIC interrupts
MCE: 0 0 0 0 0 0 0 0 Machine check exceptions
MCP: 58 58 58 58 58 58 58 58 Machine check polls
ERR: 0
MIS: 0
The sound cart is on the ehci usb1. I have noticed that my wifi card is using the same IRQ, but on my kernel especially compiled for music, the brcmsmac module is disabled.
That's enough to deactivate the hardware from using that interruption, isn't it?
lsusb -t
/: Bus 04.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 5000M
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/2p, 480M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/3p, 480M
|__ Port 1: Dev 2, If 0, Class=hub, Driver=hub/8p, 480M
|__ Port 2: Dev 7, If 0, Class=hub, Driver=hub/7p, 480M
|__ Port 4: Dev 8, If 0, Class=HID, Driver=usbhid, 1.5M
|__ Port 4: Dev 8, If 1, Class=HID, Driver=usbhid, 1.5M
|__ Port 7: Dev 9, If 0, Class=stor., Driver=usb-storage, 480M
|__ Port 5: Dev 4, If 0, Class='bInterfaceClass 0x0e not yet handled', Driver=uvcvideo, 480M
|__ Port 5: Dev 4, If 1, Class='bInterfaceClass 0x0e not yet handled', Driver=uvcvideo, 480M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci_hcd/3p, 480M
|__ Port 1: Dev 2, If 0, Class=hub, Driver=hub/6p, 480M
|__ Port 1: Dev 4, If 0, Class=vend., Driver=snd-usb-audio, 480M
|__ Port 1: Dev 4, If 1, Class=vend., Driver=snd-usb-audio, 480M
|__ Port 1: Dev 4, If 2, Class=vend., Driver=snd-usb-audio, 480M
|__ Port 1: Dev 4, If 3, Class=audio, Driver=snd-usb-audio, 480M
|__ Port 1: Dev 4, If 4, Class=app., Driver=snd-usb-audio, 480M
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