quicktime player for mac troubleshooting

QUICKTIME PLAYER FOR MAC TROUBLESHOOTING MOVIE
QUICKTIME PLAYER FOR MAC TROUBLESHOOTING PRO

There are clearly different problems and different solutions. Unfortunately, it's difficult for us to correlate noises with potential solutions because many people who have sent reports to MacFixIt have been vague about which noise their particular G5 is producing. These issues make affected G5 computers unusable for digital audio work.

QUICKTIME PLAYER FOR MAC TROUBLESHOOTING PRO

What makes these issues more than just annoying for some users is that some of the noises are transferred via USB and FireWire connections, and some are amplified by connected audio equipment - reader Catherine Vibert reports that a 'whining' noise is actually transmitted to the DIGI002 in Pro Tools via Firewire. In some cases this solved the problem, but not in every case. Several readers report that Apple replaced the power supply in their G5 as a result of noise issues. The bad thing about this is that the chirping also shows at the USB and Firewire ports, causing trouble when you try to use this computer in a recording studio - the thread at Apple Discussions contains quite a few complaints about how the G5 is barely usable for audio production because of this. Since disabling CPU napping results in the CPUs consuming a fairly constant current, the vibrations stop (the magnetic fields in the coils remain constant). My guess (and backed by a friend of mine, former electronics pro and now IT.) is that (cheap) filter coils in the PSU start to vibrate, similar to loudspeaker coils, when the CPUs switch between high and low power use, which can happen very often at 2 GHz clock cycle. I can confirm the PSU noise problem - my machine beeps/chirps under any of the following conditions:Īfter installing the CHUD tools (Apple, Developer software), disabling 'CPU Napping' (some sort of power-down mode during idle clock cycles) makes the chirping go away COMPLETELY and instantly. Reader Markus Altendorff has also posted a few excellent demo sound files, and provided a few informative comments: MacFixIt reader 'Euge' has actually posted a sound file of various noises made by his dual-2GHz G5: 'Begins with HUM-Buzz-Chirp after 20s I disabled Nap to have only Hum-Buzz.' At least in our case, installing Apple's CHUD tools and disabling the 'Nap' feature completely eliminated this noise.

QUICKTIME PLAYER FOR MAC TROUBLESHOOTING MOVIE

Reader Marc Jones points out that for him the 'screech' is worse if he selects a QuickTime movie in the Finder or when using InDesign. Here at MacFixIt, we've experienced this issue on our own dual-2GHz G5 when resizing text clippings in the Finder. A 'metallic screeching' or 'static' that varies in frequency with processor load.We mentioned yesterday that changing the Energy Saver settings to 'Never' sleep seems to fix this problem for some people. Some users have taken to calling this a 'fish tank hum' due to its similarity to the sounds produced by fish tank equipment. An overall humming of the machine that seems to be attributable to the power supply fans.

(It's not yet clear to us if this is actually the same noise as the previous one, just described differently by different people.)

A constant ticking or beeping noise whenever the computer is 'idle' - if processor-intensive tasks occur, the noise seems to disappear.

Changing this setting to Automatic or Reduced seems to avoid this particular noise.

A continual 'chirping' noise that occurs when the Processor Performance setting in Energy Saver preferences is set to Highest.

However, there appear to be a number of different types of noise that users are experiencing:

General noise issues We've been receiving a significant number of confirmations and independent reports of noise with Power Mac G5 systems.

Quicktime player for mac troubleshooting