On 5 September 2012 at 22:28, "Len Ovens" <len@xxxxxxxxxxxxx> wrote: > > On Wed, September 5, 2012 12:24 pm, Kevin Cosgrove wrote: > > >> cat /proc/interrupts > > > > Xrunning system says: > > > > CPU0 CPU1 CPU2 CPU3 CPU4 CPU5 CPU6 CPU7 > > 16: 56322 0 0 0 0 0 0 0 > > IO-APIC-fasteoi ahci, ehci_hcd:usb1, firewire_ohci, snd_ice1712, nvidia > > That would give me xruns too. OK. I see it now. I've never had to fight the interrupt problem before. > I was able to change slots. Also try to keep some distance > between the video card and the audio card. There are two PCI (legacy) slots in this ASUS P8Z68 DELUXE GEN3 1155 Motherboard. I intend to use both of them as I have a pair of M-Audio Delta 1010 audio adapters. > (if you can) See if you can set IRQ in the bios for that slot > to something else if there is only one. I'll look at the manual for my MB and see what I can do. > I find the same thing with USB audio. I have to find a USB plug > on my laptop that does not share irq with anything else and > only plug the audio IF in that one plug. > > > Fine system says: > > > > 17: 0 0 0 0 IO-APIC-fasteoi ICE1712 > > Nice. A happy accident. > >> cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor > > > > Xrunning system says: > > > > ondemand > > ondemand > > ondemand > > ondemand > > ondemand > > ondemand > > ondemand > > ondemand > > What may help if you don't want to use performance is to set it > to user and then set a lower than top speed. I seem to get less > problems setting my system to 50% speed than with the (faster) > ondemand setting. > > cpufreq-set and cpufreq-info are great to play with this stuff. > the -info one will tell you what frequencies you can choose > from. I found choosing the exact frequency didn't always work, > slightly higher or lower would though. Play with it. Read the > man page. My laptop runs at 1.6Ghz, but also has 1.33, 1.06 > and .8. I can do a lot more than I would think at 800Mhz as it > turns out. Very interesting. It's also interesting that my system with no xruns has RT priority for jackd turned OFF. ??? I just discovered that last night. > rtirq can help. If used wrong it can make things worse... for > example the stock setting is bad for FW or USB audio IFs. Wow. > It comes with the snd first or second. as someone else says in another > message put snd_ice1712 and then snd after. This will put your internal IF > in it's proper place, second. That makes sense. The internal IF is only used for playing my music collection's files and the audio for on-line things. > I do the same with USB cards. I find out which USB plug has no > other irqs with it (USB3 on mine) and put : usb3 snd usb as the > order. This puts my external audio first, then the internal > crap audio and then whatever other usb stuff there is (in a > laptop that includes webcam in the lid and SD reader and maybe > other things too... I'm only using USB for mass storage. Eventually I hope that my Behringer BCF2000 will be usable again with ardour. I'm hoping ardour 3 will restore that functionality. > take a look through dmesg for all the stuff that is USB) In order to look for conflicting IRQs with my audio interface? > Be aware that putting: snd-ice1712 snd will put all that other > stuff on irq 16 between your ice and your internal card and you > may wish to explicitly make them lower. Check your priorities > after you have it going: > > ps -eLo pid,cls,rtprio,pri,nice,cmd | grep -i irq > > Look at the third column over. This is looking as complicated as slackware was in 1996, back when I had to build a special kernel with each OS release. Thanks for the detailed info! -- Kevin _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
