Hello,
Using an DAC with a Intel NUC I get distorted, crackling sound. The
device has four USB 3 ports, tried out all of them. System is jessie.
Klaus
root@nuc:~# lsusb -t
/: Bus 03.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/4p, 5000M
/: Bus 02.Port 1: Dev 1, Class=root_hub, Driver=xhci_hcd/9p, 480M
|__ Port 2: Dev 2, If 0, Class=Human Interface Device,
Driver=usbhid, 12M
|__ Port 2: Dev 2, If 1, Class=Audio, Driver=snd-usb-audio, 12M
|__ Port 2: Dev 2, If 2, Class=Audio, Driver=snd-usb-audio, 12M
|__ Port 3: Dev 3, If 0, Class=Human Interface Device,
Driver=usbhid, 1.5M
|__ Port 4: Dev 4, If 0, Class=Human Interface Device,
Driver=usbhid, 1.5M
|__ Port 7: Dev 5, If 0, Class=Wireless, Driver=btusb, 12M
|__ Port 7: Dev 5, If 1, Class=Wireless, Driver=btusb, 12M
/: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=ehci-pci/2p, 480M
|__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/8p, 480M
root@nuc:~# cat /proc/interrupts
CPU0 CPU1 CPU2 CPU3
0: 14 0 0 0 IR-IO-APIC-edge
timer
7: 5 0 0 0 IR-IO-APIC-edge
8: 1 0 0 0 IR-IO-APIC-edge rtc0
9: 2 0 1 0 IR-IO-APIC-fasteoi acpi
23: 6 9 7 15 IR-IO-APIC-fasteoi
ehci_hcd:usb1
56: 0 0 0 0 DMAR_MSI-edge dmar0
57: 0 0 0 0 DMAR_MSI-edge dmar1
58: 2936 1232 4271 1012 IR-PCI-MSI-edge eth0
59: 6110 4851 96574 1777 IR-PCI-MSI-edge
xhci_hcd
60: 5589 3090 6336 2688 IR-PCI-MSI-edge ahci
61: 7 5 0 0 IR-PCI-MSI-edge
mei_me
62: 6002 2434 6378 1983 IR-PCI-MSI-edge i915
63: 1779 1103 17155 761 IR-PCI-MSI-edge
iwlwifi
NMI: 2 3 2 1 Non-maskable interrupts
LOC: 36714 32697 23873 23806 Local timer interrupts
SPU: 0 0 0 0 Spurious interrupts
PMI: 2 3 2 1 Performance
monitoring interrupts
IWI: 1144 1052 1588 1106 IRQ work interrupts
RTR: 0 0 0 0 APIC ICR read retries
RES: 3209 3144 4170 5299 Rescheduling interrupts
CAL: 805 895 819 824 Function call interrupts
TLB: 597 278 496 1090 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: 9 9 9 9 Machine check polls
ERR: 5
MIS: 0
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