On Sun, 2013-02-10 at 09:59 -0800, Len Ovens wrote: > On Sun, February 10, 2013 9:34 am, Louis Gorenfeld wrote: > > > Also, grab rtirq and run that if you haven't. I'd assume if you're > > using a music-oriented distro that this is all already done. > > Change the priority in the rtirq conig file before using it. It comes set > up to prioritize internal/pci sound devices over either USB or FW. Choose > a USB port and always use the same physical port (assuming you have picked > one on it's own irq) and put that USB port first... by going USB3 > something something USB for example. This puts USB3 first and all the > other USB ports at the end. (USB3 happens to be the good one on my > machine, yours may be different) > > This would be a great place for some automated setup BTW. A dialog that > pops up if you plug a USB sound card in to a port that uses a shared IRQ > suggesting to try another port even. Sometimes it's possible to unbind devices, but I never experienced a serious difference between a simple set up machine and a special tuned machine: $ cat tuning #!/bin/bash # sudo bash tuning - Ubuntu Studio Quantal # 2012/Nov/04 ### http://www.mythtv.org/wiki/PCI_Latency ### http://wiki.linuxmusicians.com/doku.php?id=system_configuration#pci_bus_latency ### Bluetooth service bluetooth stop ### Network #service network-manager stop #service networking stop # does cause serious issues #modprobe -r r8169 # Ethernet NIC driver ### TerraTec EWX 24/96 modprobe -r snd_ice1712 ### Others modprobe -r firewire-ohci modprobe -r firewire_core service cups stop modprobe -r ppdev # parallel port modprobe -r lp # printer ### Unbinding devices echo -n "0000:00:13.2" > /sys/bus/pci/drivers/ohci_hcd/unbind echo -n "0000:00:13.4" > /sys/bus/pci/drivers/ohci_hcd/unbind ### Log file l="log/tuning.log" #echo "$ lspci -v " > $l #lspci -v >> $l #echo >> $l echo "$ /etc/init.d/rtirq status " > $l /etc/init.d/rtirq status >> $l echo "$ grep 18: /proc/interrupts" >> $l grep 18: /proc/interrupts >> $l echo >> $l echo -n $(date)" - "$(uname -r)" - " >> $l cat /etc/issue >> $l echo "##############################" ; cat $l exit 0 _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
