2009/1/8 Renke Brausse <rbrausse at gmx.net>: > sorry, off topic - but I can't resist... > > Am Freitag, den 09.01.2009, 00:50 +0100 schrieb Lennart Poettering: >> and >> of course because software I write doesn't have any bugs! > > do you need a new job? just contact me :) [:p] If you need a programmer who can produce obscure bugs out of thin air, I'm your man, otherwise go for Lennart! Anyway, I tried the nv driver in case it was the nvidia taint messing up things but no change in behaviour. Looking at Lennart's options, I doubt that the sound card driver is bad. The ICE1712 chip has been around for at least 6 years in my experience. My employer makes embedded Linux devices and we've used various M-Audio devices, all using the ICE1712 since RedHat 7.3! Doesn't make it impossible but quite unlikely. Whilst I don't know much about the driver in detail, and I guess it hasn't been touched for a long time, I was under the impression it was a well documented and supported device. So I'm still thinking that the problem is related to my XOrg CPU usage and some kind of interrupt issue. When I was using the nvidia driver, CPU usage by Xorg was around 30-40%! Now I'm on the OSS nv driver and it's about 15-20% (think that's for 1 core only). Doesn't seem that much but maybe it's a timing issue related to interrupts. I'll have a play with latencytop in the next few days. Thanks again for the help. I'm getting closer to sorting this out and if I do I'll try to post it web-wide so googlers can find it. Cheers, Chris.
