Yesterday I spent awhile trying to figure out why Logic Platinum 4.8 wouldn't output any sound when playing files, when it usually would. There was sound when playing aiff files indiviually but not when playing the whole track.

The only thing different in my setup from last week, when it worked, was that I had installed 1GB more RAM on my Dual 1.25 G4. So I took out the RAM, and I GOT MY SOUND BACK! The max RAM that I have in my computer now is 1GB; 1.5GB does not allow the sound from the whole piece to play for some reason...

Does anyone know of a workaround to this? I don't think the newer Logic versions have a problem- I have Logic Express 6 but haven't used it with my more-RAM-setup.

Any insight on the matter is appreciated.

what computer are using? Does it support 1.5gigs of RAM? Does OS9 support that much RAM? I only ask because this was an unheard of amount of RAM until the recent Macs and OS9 was developed when 1gig was max I think.

Also, not all RAM is created equal. I have heard that some RAM... like what Mac Zone gives you free is cheap RAM and prone to problems. At least that is what I have been told by my techs here at work as we have had problems with our G5's and RAM.

Might also be a Logic issue in that version that doesn't support over 1gig of RAM either... but none of this I can confirm for sure. Sorry

I didn't know that 1GB RAM was max for OS 9 at one point-- I thought that all programs could just take the RAM, but maybe there is some bug in Logic that's similar to the OS 9 1GB limit, as version 4 was made a few years ago.

I am using a MDD Dual 1.25GHz PowerMac G4.

Thanks for the input.

Not sure why you are having audio playback problems.

I have a Silver/Blue G4 dual with 1.5G RAM.

I am running Logic Silver 4.x in real OS 9 and I have audio.


There was a one time incident when I had no audio which was as a result of pluggin in an usb audio in /out device. For some reason or other that I can't figure out it "killed" audio playback when I have plugged in when in OS 9. That same device works fine in OS X.

No doubt you have reviewed Logic's preference window for the audio settings.

Have you had your RAM tested? My mac tech guy had to test and re-install several sticks of RAM in my G4 to bring it up to the 1.5G level. He said some ram sticks, although they are OK, just won't work.

From the first G4 max ram was 1,5 GB up to MDD which are max 2 GB… every spec at EveryMac.

The deficient ram is certainly the reason, OR a wrongly initialized port somewhere that was forced to initialize when the ram was changed. (reseting the motherboard would have cured the problem then…)

Interesting that some RAM "just won't work". Maybe it has to do with one module being one brand and the other two being from another brand.

In my case, I had the default 512MB module in, that worked fine. After installing two more 512MB RAM modules, Logic had no sound. BUT, when I took out the default 512MB module and just left the 1GB of new RAM, Logic worked like it should!

Very weird. No settings were changed or anything.

Luckily 1GB is enough for Logic, but I could sure use that extra 512MB in OS X!

Maybe I should try mixing two 512MB modules to see what happens.

This post has been edited by jnasato: Mon 1 Nov 2004, 07:56

FIXED!!!

The problem turned out to be with RAM allocation, haha... Interesting thing: the system performace meters weren't active, meaning that nothing was being processed.

The problem was fixed by upping the RAM allocation from 100MB to 500MB.

hi jnasato -

i have the same problem with my G4 Dual 1.25 mac and logic 4.8. I want to use my other gig of ram...Sorry to be such a dummy - how exactly did you go about changing the RAM allocation "from 100Mb to 500Mb"?

All the best!

dave

Logic's RAM allocation can be changed by selecting the Logic application icon in the Finder, then Get Info (command-I), Memory, and change it to whatever you'd like.

Hope it works out.

Thanks a lot jnasato!

all the best

marcus