[LAU] a NEW question about pitch and speed

[Niels Mayer]

Just a random thought:

in ALSAmixer, if they exist, check the values of  'Multi Track Rate
Locking' and 'Multi Track Rate Reset' .

Both should be off. 'M' for mute will turn them off and on. These
settings seem "sticky" so you'll need to  unload/reload the drivers,
or reboot, in order for then to take effect. [[ if any alsa expert has
opinions on what these settings are for -- other than causing massive,
 inexplicable hard-to-debug problems with soundcards and/or causing
Jackd to lockup when they're set... ]]

Much more rarely, I've also seen problems w/ "ondemand" scheduling
(CPU clock changes) versus "performance" (steady clock at top speed).
for example, on a dual processor machine, as root, try:
/usr/bin/cpufreq-selector -c 0 -g performance ;
/usr/bin/cpufreq-selector -c 1 -g performance
For example, if you use the program 'mixxx' and output to ALSA
directly, running in "ondemand" mode causes it to lock up. Running it
through jack allows it to work in either ondemand or performance mode.

Niels
http://nielsmayer.com