silvertonesx24 Posted April 5, 2008 Share Posted April 5, 2008 I am converting some audio tapes to cd. 45 min sides. I started one in logic 8, about 20 minutes into, I plug my headphones into my macbook pro, AND LOGIC CORE OVERLOADS, stopping recording and forcing me to do it all over again. Apparently, on my Macbook pro 2.16 core2duo, plugging in and removing headphones spikes the cpu and core overloads the machine. I tested this and it always happens. does anyone else have this problem? Link to comment Share on other sites More sharing options...
shivermetimbers Posted April 5, 2008 Share Posted April 5, 2008 No, because I don't do that. I noticed it does happen, kind of like trying to remove your keys from the ignition while you are still driving. It' s like the computer thinks you want to change your preferences. Don't do that anymore while recording. Link to comment Share on other sites More sharing options...
silvertonesx24 Posted April 5, 2008 Author Share Posted April 5, 2008 maybe its an os issue then? i have 10.4.11 Link to comment Share on other sites More sharing options...
ChicoSatis Posted April 5, 2008 Share Posted April 5, 2008 Hi This happened EVERY time I did that. I don't do it anymore obviously. It's one of those "Lesson learned" things. Not sure why it happens. Shivers suggestion about it being a preference thing sounds reasonable though. Have a good one. Link to comment Share on other sites More sharing options...
STILL Posted April 5, 2008 Share Posted April 5, 2008 I think when you access the physical hardware in changing the outputs, the OS goes to the settings in Audio/midi at the core level which throws a glitch in the processor intensive jobs that might be running. I never change outputs during any CPU intensive tasks, and the system sees plugging in headphones as changing outputs. Link to comment Share on other sites More sharing options...
wiffbi Posted April 5, 2008 Share Posted April 5, 2008 I think it has something to do, how OS X handles the Headphones on MBP and MB. I noticed this on my MB as well (Powerbook G4 did not have this): plugging headphones in, it is kind of a new soundcard for OS X. How do you notice this? First: you have independent volume control (mute the sound, when headphones are plugged in, unplug, turn volume full up, plug headphones back in, you should have muted sound again). Second: start-up chime: this always happens, you cannot anymore just plugin headphones to "suppress" it from "chiming". Third: Logic hickup as you noticed yourself, when OS X is swapping soundcard-settings/drivers/whatever. Link to comment Share on other sites More sharing options...
pantomimeHorse Posted April 5, 2008 Share Posted April 5, 2008 Chico has it in one. It's like switching off an interface or unplugging a MIDI port from the USB. OS X immediately dives into the Core Audio to have a paranoia attack. - C Link to comment Share on other sites More sharing options...
m-m-m Posted April 5, 2008 Share Posted April 5, 2008 If I do it on my imac the playback stops. The consensus seems to be to just not do it. Link to comment Share on other sites More sharing options...
bmdaugherty Posted April 6, 2008 Share Posted April 6, 2008 Is this not the obvious outcome of this scenario? I mean, do you switch logic's outputs from out 1&2 to out 3&4 while recording? No. Do you change your core audio drivers in Logic's preferences while recording? No. Come on, your changing your HARDWARE SETUP when you do this. Your computer is not a multichannel audio device (stereo is 2ch, but thats all you get), so only 1 stereo stream can be active at a time. This is not a glitch in the OS or in Logic, its simple computing. Switching hardware midstream requires many resources. Messing with your hardware while recording is NEVER a good idea. Link to comment Share on other sites More sharing options...
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