Hi I have a realtime audio server running mpd with an external DAC connected to a USB2 (full-speed) port. I am in doubt as to how the rtirq configuration should be at best, in particular the entries: RTIRQ_NAME_LIST= RTIRQ_NON_THREADED= RTIRQ_HIGH_LIST= Thanks in advance for you help. Regards -- My setup is here below: rtirq package: rtirq-init version 20150216-2 ~~~ $ cat /proc/asound/cards 0 [MDAC ]: USB-Audio - Audiolab M-DAC Lakewest Audio Audiolab M-DAC at usb-0000:00:1d.0-1.6, full speed ~~~ ~~~ $ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: MDAC [Audiolab M-DAC], device 0: USB Audio [USB Audio] Subdevices: 0/1 Subdevice #0: subdevice #0 ~~~ ~~~ $ cat /proc/asound/modules 0 snd_usb_audio ~~~ ~~~ $ sudo lspci -v ... 00:1d.0 USB controller: Intel Corporation 8 Series USB EHCI #1 (rev 04) (prog-if 20 [EHCI]) ... Kernel driver in use: ehci-pci Kernel modules: ehci_pci ... ~~~ ~~~ $ cat /proc/interrupts CPU0 CPU1 CPU2 CPU3 ... 23: 15168 19473 344933 10188 IO-APIC 23-fasteoi ehci_hcd:usb1 ... ~~~ -- al3xu5 Say NO to copyright, patents, trademarks and any industrial design restrictions. ________________________________________________________________________________ Public GPG/PGP key block ID: 4096 bit RSA key 69C5977BF94CFE23 Fingerprint: 59C6 9DC7 CD4B CF2F A190 E3DE 69C5 977B F94C FE23