LPC: The past, present, and future of Linux audio [LWN.net]

LPC: The past, present, and future of Linux audio

Posted Oct 7, 2009 18:58 UTC (Wed) by jebba (guest, #4439)
In reply to: LPC: The past, present, and future of Linux audio by drag
Parent article: LPC: The past, present, and future of Linux audio

I appreciate that it may be pretty hard to get jack/rt going using some approaches (e.g. older debian). But a fedora(ish) install with planetccrma packages (including kernel) make it quite easy. I have repeatedly read that Intel HDA can't be used with realtime, but I have used it successfully on various EeePCs and my thinkpad. It seems that the package defaults are more reasonable now--with F11 and the thinkpad I basically just installed the ccrma packages, started up qjackctl and it "just worked".

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LPC: The past, present, and future of Linux audio

Posted Oct 7, 2009 19:20 UTC (Wed) by drag (guest, #31333) [Link]

It's gotten better.

But for best performance you still need to patch and recompile your kernel as well learn the in-and-outs of dealing with the multiple Linux user interfaces.

With my setup I was getting pretty reliable sub-10msec latencies with Jack's settings with no xruns, although I usually let things slide to 60-70 just so I could have more responsive system.

The other thing that sucks about Intel HDA (besides the low quality of digital-analog conversion chips and relative high buffer requirements) as far audio creation stuff is concerned is just the lack of I/O options. This is the biggest real difference between 'profesional' and 'consumer' audio hardware. My old M-Audio Audiophile 24/96 has Analog stereo in, stereo out, digital in, digital out, and midi in and midi out. It also has nice-quality D-A/A-D conversion and the difference is enough that a with a quiet room and nice headphones pretty much anybody can tell the difference.

But, of course, that's PCI.

Otherwise I have no problems with using Intel-HDA for anything. It's the sound card I use the most since that is what is on my laptops. For music playback and doing some recording stuff it's perfectly fine and unless you are in a quiet area with high quality headphones the chances of anybody being able to the the difference is very unlikely.