17 Feb
2005
17 Feb
'05
12:33 p.m.
On Thu, Feb 17, 2005 at 11:20:06 -0500, Lee Revell wrote:
Actually it can be on laptops with CPU scaling. JACK gets sufficiently
confused on mine that it tells ALSA to restart the card constantly,
causing all kinds of noise.
I have to lock the CPU to the maximum frequency to stop it happening.
- Steve
this has
nothing to do with your noise. JACK uses CPU Hz to provide a
UST value. i am puzzled by the fact you are the 2nd person to think
that JACK's timing is somehow based on system timers and so
forth. JACK (in regular mode, using one of the normal backends) is
driven 100% by the interrupt from your audio interface. whether or not
the CPU Hz value is correct has (effectively) zero impact on audio
generation and timing.
Besides, I wrote a patch to eliminate the /proc/cpuinfo hack, it's low
prio but should be in JACK eventually. But like Paul says this has
absolutely nothing to do with the sound.