[linux-audio-user] 24bit 96khz cards that work well

Anthony avan at uwm.edu
Mon Dec 30 20:59:00 EST 2002


* Brian Redfern <bredfern at calarts.edu> [Dec 30 02 19:35]:
> What I notice is that I have hiccups during recording and playback, at
> first I thought my machine was just too slow for lowlatency, but I was
> wrong. In my case I may do better with usb-audio, since my usb defaults to
> irq 9, which is apparently the ideal irq for usb audio. 
> 

> Unfortunately I don't know how to excatly quantify the problem, but what
> it would appear to me is there are just conflicts between some video and
> some audio chipsets. Now if I swap out my AGP video card for my old junky
> card and the xruns under jack stop altogether, then I know that the AGP
> Rage is a doo-doo card for video. Interesting that a more high end card
> solved your problem.
> 

Well its going from PCI to AGP that did it i think. Remember also
about the pci device latency timer which controls how long the card
can hog the bus. I think this is usually low by default for
audio. Check with lspci and change with setpci. It didnt help me
either way.

> >From what I've read the whole issue of video/audio problems is not a linux
> specific issue, it also crops up under windows.
> 
> 

Sure. Maybe post you interrupts and lspci output and Mark might use
his expertise in deciphering it ;)

--ant



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