Noisy Audio In G5, noisy audio in G5 Options

[crazyoval]

Hi guys.

I've just got myself a 2nd hand dual 2.7Mhz G5 running 10.4 and 4Mb RAM. Ive upgraded from a G4.

I have an issue with the G5 in that there is a lot of background noise, when I turn the volume up its like a bleeping sound mixed with buzz and crackle as I move the mouse around the screen. I had this on a G4 Powerbook and I could only stop it when I disconnected the power, clearly an option I don't have on the G5.

Has anyone else experienced this and has got to a solution? Ive done a search for 'noise' but couldn't find anything else.

Thanks in advance....

[fictionmusic]

Hi guys.

I've just got myself a 2nd hand dual 2.7Mhz G5 running 10.4 and 4Mb RAM. Ive upgraded from a G4.

I have an issue with the G5 in that there is a lot of background noise, when I turn the volume up its like a bleeping sound mixed with buzz and crackle as I move the mouse around the screen. I had this on a G4 Powerbook and I could only stop it when I disconnected the power, clearly an option I don't have on the G5.

Has anyone else experienced this and has got to a solution? Ive done a search for 'noise' but couldn't find anything else.

Thanks in advance....

What you need to do is download and install CHUD tools from the apple site.


http://developer.apple.com/tools/download/

Once you do that you'll have a little icon on the top menu bar (by the date on the top right). If you click it a menu appears and at the bottom of it there is the line
"open hardware prefs"

click that and a window opens up. Under power there is a dialog box that says "nap"


click it and your noise issues should vanish.


Every time you restart you'll need to go back and turn off the nap function, but other than that you should be good to go. I use CHUD tools version 3.5 and not the later ones so if possible, I'd recommend you getting that.

Hi guys.

I've just got myself a 2nd hand dual 2.7Mhz G5 running 10.4 and 4Mb RAM. Ive upgraded from a G4.

I have an issue with the G5 in that there is a lot of background noise, when I turn the volume up its like a bleeping sound mixed with buzz and crackle as I move the mouse around the screen. I had this on a G4 Powerbook and I could only stop it when I disconnected the power, clearly an option I don't have on the G5.

Has anyone else experienced this and has got to a solution? Ive done a search for 'noise' but couldn't find anything else.

Thanks in advance....

What you need to do is download and install CHUD tools from the apple site.


http://developer.apple.com/tools/download/

Once you do that you'll have a little icon on the top menu bar (by the date on the top right). If you click it a menu appears and at the bottom of it there is the line
"open hardware prefs"

click that and a window opens up. Under power there is a dialog box that says "nap"


click it and your noise issues should vanish.


Every time you restart you'll need to go back and turn off the nap function, but other than that you should be good to go. I use CHUD tools version 3.5 and not the later ones so if possible, I'd recommend you getting that.

here is a better link....

ftp://ftp.apple.com/developer/Tool_Chest/...formance_tools/


I'd go with 3.52 release.

[crazyoval]

HI guys, thank you for your support. I will check my xlr cables. Im also using an emagic 6\2 that came with Logic Gold. I intended to upgrade later last year. Now I have a G5 Im wondering about the fibre in and out so there's even less noise issue. Ive also got an analogue mixer which routes in audio and routes audio out to the active Tannoys.

So there's a few things I could do here, but none of this was an issue with my G4. I moved to a G5 because of speed issues and fan noise. I heard my mate's G5 and it sounded so quiet I felt it was worth the hassle upgrading.

Blime, Ive never heard of a CHUD before but thanks I will also give this a try since the G5 is the only thing that has changed and now Im getting a lot more noise.

Aa mate of mine uses a G5 for his studio and hes not had to do this. Perhaps a G5 is more sensitive than a G4 to radiation issues maybe...

Thanks for your support everyone

Guy

Ce message a été modifié par crazyoval - lun. 7 janv. 2008, 15:51.

[abcdaniel]

Just a note, there´s an older thread on this: http://en.440forums.com/forums/index.php?a...f=6&t=21592
There is a somewhat useful link in there to an xlr8yrmac article. Chirping and weird noises are due to advanced power managment, especially when it comes to powering the graphics card, and strikingly poor hardware design for the power components in the G5.

Having a G5 myself, annoyed as hell at the chirping, I decided against disabling nap cause I was concerned with hardware longevity. I might be too cautious. My Mbox doesn't get get any of these interferences however, with the Mbox placed on the desk and the G5 below.

Hope it works out or you learn to cope!

[crazyoval]

thank you abcdaniel, I shall look there too. My emagic 6/2 is on the desk too well away from the G5 but Ive not got yet to checking the XLRs. Ive re-routed and separated all audio and data devices to separate power supplies too.

Ive now read the other docs and it doesnt seem clear if nap will have any adverse effect on your G5 or not. I guess if you have to turn it off when you use it for sound only, it aint off all the time.

Ive just checked the nap button and it definately stops the churping sound. I still have some sound but I think I need to upgrade my audio device and mixer as well as check my XLR cables too.

Thanks all again, really appreciate your help.

Ce message a été modifié par crazyoval - lun. 7 janv. 2008, 17:31.