Buzzing Sound While Mac Pro is off

I just noticed a very low bizzing sound coming from my mac pro. It occurs when the machine is actually off. Is this something to be concerned about? Do others have this very low sound coming from the computer while its off?

PSU first likely suspect I guess.
Also insure that if you have a UPS, that it is above 1000VA, also related to problems.
Mine causes a hum when in use, trouble is, that even after shutdown, my ears still ring (sounds like 100s of chirping crickets or just plain "tingling ears" that won't go away for hours once it starts.
Hard drives have often been able to set the whole metal case to some kind of hum or discordent clash of vibrations.

Similar Messages

  • Can a Mac Pro boot off a MacBook Pro in Target Disk Mode?

    Summary: "Are you able to boot a Mac Pro off of a Mac Book Pro in Target Disk Mode?" OR "Will a Mac Pro boot off an OS X install that was made on a MBP?"
    Details:
    I'm finishing a music project that was created on a PPC G5 Quad computer and going to a studio in Santa Monica to complete the final mixdown. My 3rd party software plug-in configuration is unique, and the studio doesn't have all of the software instruments that I do on their 8 core mac pro. My G5 software installation is mirrored to my MacBook Pro, but the MBP doesn't have enough CPU power to play the project back.
    Is it feasible to have the studio's 8 core Mac Pro boot from my MacBook Pros hard drive? Essentially, we'd be using my OS and software on their powerful CPU / hardware. I figure, since they are both Intel builds of OSX, this should be do-able.
    I don't have access to the Mac Pro until I show up to start working.
    Thanks for any input / suggestions!

    The MacBook Pro boots fine in 10.5.8, and loads the Logic project without any faults. The only issue is that a CPU shortage occurs when you attempt to play the sequence.
    Like you suggested, I performed separate UB installations of all the needed software on the MBP solely so I could move Logic projects from one computer to the next without a hitch. (Actually, DropBox does this for me). Migration assistant was not employed in this process due to the PPC / Intel issues you noted.
    I didn't need to mention the G5 as it appears to have caused some confusion based on Kappy's reply, but I did want to explain my work flow thoroughly.
    It sounds like booting the MacPro from my MBP is feasible. I'll mark this topic 'solved' and head over to the studio tonight. I'll post here any anomalies from the session (if any).
    THANKS~!

  • Speaker sound on Mac pro

    After I used the sound from headphone ...
    the speaker sound on Mac pro became not working, How I can fix this problem?

    Try system preferences and click on SOUND select the OUTPUT tab and make sure Internal Speakers are highlighted... You can always try rebooting the computer or an SMC reset... To do an SMC reset, Power the mac down, Hold Control + Option + Shift... while holding them press power and hold all for 10 seconds. Release and power the mac back on... This should fix it if selecting from system preferences doesn't fix it...

  • None of my App Store games have sound on Mac Pro?

    None of my App Store games have sound on Mac Pro, although all of the sound coming out of my computer works. Any hints?
    Thanks

    Just to add, I signed out of iTunes and App Store on phone and now it won't let me sign back in....

  • My Mac Pro shuts off after entering my log in information

    My mac pro shuts off when my log in information is entered after about thirty seconds or so.

    Hello again,
    it seems I have solved the problem myself. In system preferences, Security and Privacy, General, I deselected Ask for a password after … minutes …. Now the computer goes to standby normally, and of course does not ask for a password any more after waking. I still do not understand why choosing this option should make putting into standby impossible.
    I hope this finding can be of service to other users.
    Goodbye.

  • Retina display on Mac Pro goes off randomly while working

    My client has the latest Mac Pro (cylinder) with two screens, one of which is the latest Apple Retina display.
    In my client's own words, here's the problem:
    "My monitors have been really buggy. The retina display just cuts out - then randomly comes back on.
    I have verified that all cords and plugs are secure and that the power source is on... it's been doing this since the beginning but is worse now.
    Sometimes one stays on and the other goes off -- sometimes it switches.  When I reboot the same thing happens.
    I ran disk utility permissions and repair just in case and all seems to be in order."
    Mac Pro (64G RAM)
    I searched online but haven't found any info on this problem
    Any ideas?

    Howdy generatech,
    To help resolve or troubleshoot the issue with these monitors intermitently turning off on their own, I would use this part of the following article:
    Apple computers: Troubleshooting issues with video on internal or external displays - Apple Support
    Try unplugging the video adapter or cable and then plug it back in.
    If more than one video adapter is in use (or "daisy-chained"), troubleshoot by using only one adapter.
    Example: A mini DisplayPort to DVI adapter connected to a DVI to HDMI adapter is an unsupported configuration because there is a series of adapters in use.
    Reset the system
    You can reset the Mac's parameter RAM and SMC.
    Thank you for using Apple Support Communities.
    All the very best,
    Sterling

  • Mac Pro Clicks Off When Waking from Sleep

    This is a recurring problem, that is all the more annoying for its lack of consistency. Occasionally when my Mac is sleeping it'll just "click" (it actually makes a clicking sound) and shut off immediately when I try to wake it. Pressing the power button does nothing.
    After a lot of trial and error I've found that the best solution is to unplug the power cord and wait for maybe 15+ seconds. Then I plug it back in, press the power button and she starts up like nothing happened--as if we don't both know what happened.
    I'm on a good streak now, and it hasn't happened for a while, but given my experiences with it, I can't really relax.
    Any ideas? Thanks for your time.
    Mac Pro   Mac OS X (10.4.8)  

    I bet it's draw!
    Yep, power draw. How about this for a knee slapper:
    I had my MacPro plugged in to the same socket as a moderatly
    stuffed PeeCee and every time I woke up the MacPro the PeeCee
    would click off. The PeeCee PSU wasn't getting enough juice
    and just turned off.
    Now I have a poor electrical system in the current house that
    I'm in. I think the Main breaker is 15 amps and the two that
    split off are 10 each. So I can't toast toast and nuke some
    cold coffee at the same time that the 3 PCs and the 22" CRT
    are on in a lit room without the main breaker tripping. But
    without the toaster and nukrowave running the MacPro when
    waking up harshly dims all the lights in the house for about
    0.5 seconds.
    If your Mac is asking for more than it's getting there might
    be some smart circutry in the PSU (like there is in most nice
    PeeCee PSUs) that turn it off before it causes any trouble.
    Make sure it's that only thing plugged into the socket that
    you're using for it and see if that doesn't solve it.

  • Mac pro turned off by itself

    i do most of my work on a mac pro (1,1)
    and this evening at precisely 8:04pm my mac pro clicked and then turned off
    the computer did not shut down, it just turned off
    i should note that the click i heard was the same as the one that i hear when i first press the power button to turn it on
    attached is console starting from 15secs before 8:04pm
    http://img705.imageshack.us/img705/6112/picture3o.png
    my mac is on an APC ups and the power was stable at 8:04pm
    programs running
    mail
    firefox
    remote desktop
    ichat (aim and bonjour)
    internet sharing (to ethernet 2)
    any thoughts on what could cause a power off?

    Same here. MacPro 3.1.
    ALSO on an APC (Back UPS RS-1500). Woke up yesterday to the sound of it (UPS) beeping, red light on, computer off. Happened today, same way. Checked energy saver settings.
    Wasn't using it, so did not hear click.
    MacPro starts ok, shuts down ok, sleeps ok.
    I had it plugged into a wall socket for two weeks while I configured it. No problems. Only after plugging into to the UPS. This UPS has served well backing up a Dual G5 tower previously.
    Battery shows 100%. No heavy periphs (like printers) online.
    Had a multimeter in the UPS the first time around and got 122 volts in the line.
    Could it be the UPS?

  • Mac Pro powering off and on

    Hi All,
    I have updated to OS X 10.7.5 on my Old Mac Pro (late 2008 or thereabouts) which was the latest OS X that was allowed.  Since then it worked for a short while perfectly, then started to power on and off continually and I only occaisonally get it to stay on for 3 mins before it goes in to the power off/on cycle.
    During these cycles it usally reaches the power up sound and then powers down ect
    Please help!
    Cheers
    Paul

    Ddi you happen to do a copy run start with module powered off? If so, I would think its expected behavior.

  • Mac Pro turns off for no reason

    For the past week or so my Mac Pro is on occasion just turning off, as if the power cord had been suddenly pulled. But only the Mac itself is cutting off, the monitor and other peripherals in the room remain running. There's no dimming in the power as far as I can and after today I don't believe that it is a power surge or loss that is causing the problem. Today the computer has started almost continually turning itself off after shorter and shorter time periods. Just winks out. I've checked all the plugs, ran DIsk Utilities and have the most current OS version installed.
    I'm stumped and find that with the machine only staying on for 5 minutes max now that my ability to tech the machine is severely hampered. Any ideas where to begin to look?

    I wasn't talking about one line per computer, just one line to your office and equipment off the circuit breaker that isn't shared by 1000W of other equipment.
    http://en.wikipedia.org/wiki/KillAWatt $15
    http://www.amazon.com/P3-International-P4400-Electricity-Monitor/dp/B00009MDBU
    Mac Pro's wake from sleep inrush current (check wiki).
    http://en.wikipedia.org/wiki/Inrush_current
    The Mac Pro wasn't behaving but nothing we can do. And rather than occur on cold boot, it was at its worse on wake from sleep, which a firmware update helped resolve, and models built after April didn't suffer from.
    A UPS protects your equipment and extends the life probably of components, like modem and the rest, and keeps it running better with fewer problems. I would never run a workstation and $5000+ of equipment (and data has value) without. While no single power conditioner can correct all power quality problems, many can correct a variety of them.
    http://en.wikipedia.org/wiki/Uninterruptiblepowersupply
    http://en.wikipedia.org/wiki/SurgeProtectiveDevice
    http://en.wikipedia.org/wiki/Line_conditioner
    The Quad G5 was like... walking into a hornet's nest to listen to, and see the 100s of posts in a single thread on "what UPS does this thing need" freakin' out so many.
    Surge strips have their place, just not going to do a lot to clean or condition voltage or some problems, and sometimes just a way to overload an outlet. I've found the best surge protectors in hardware supply store.
    A 1300VA $150 and 1500VA $175, plus best in line conditioner from ZeroSurge.
    http://www.amazon.com/1300VA-Battery-Backup-with-LCD/dp/B000XFXEDW
    http://www.amazon.com/APC-BR1500LCD-1500VA-Outlets-BACK-UPS/dp/B000NDA5E0/
    http://www.zerosurge.com/HTML/standaloneres.html

  • No Sound from Mac Pro, however, volume icon moves up and down

    Hello, I was using my 12 month old Mac Pro last night and it worked fine with sound as normal. When I powered it up today there is no sound coming from my monitor, but the volume icon moves up and down when I press the keys? I've checked in the Preference sound file and everything is set ok? I googled this problem and some people have suggested that there should not be a 'red' light showing in the digital connection on the back? However, I can see a red light, I've tried using my headphones in the front mini-jack and nothing? I disconnected the monitor audio cables restarted the Mac, there was then sound as normal if I used the sound keys. I re-connected the audio cable and it continued to play sound for 5 minutes or so, then stopped working again?

    I have a problem with my Powerbook automatically muting. If you read the posts, there seem to be a lot of people having this problem and no one can explain or help.

  • Recording sound with Mac Pro

    Now that I am well settled into my Mac Pro, which really is a super machine, I would like to use it to archive our high end analog record collection for The Anstendig Institute (www.anstendig.org, personal: www.anstendig.com) for the long run.
    Since we have ultimate record-playing equipment (cartridge, turntable and arm), we want to archive these analog recordings with the highest possible digital sound quality of the moment, so we won't have to redo everything when the next little advance comes out (that is what we have done for decades now: every time the record-playing equipment improved, we redid everything, and when analog RTR tape became unthinkable anymore, we redid that, etc. Record playing equipment will not outpace what we now have, so we want a digital format that is unquestionably beyond the argument about what resolution will be adequate, etc.).
    For just straight sound recording, without manipulation at all or editing at all, what would be the best ap/format/whatever to use with the Mac Pro at the moment. The ap does not have to be complex or multichannel, or etc. Just high sound quality and little more.
    Thanks,
    Mark
    QuadCore Mac Pro (2x3Ghz Dual Core Xeon), 3GB, 4GB RAM, Radeon X1900 XT   Mac OS X (10.4.8)  

    There are literally dozens of apps for both recording and editing sound. You will find them at VersionTracker or MacUpdate.
    My wife uses a Griffin iMic (inexpensive hardware interface for connecting a mic or sound input via USB) together with their Final Vinyl software. We use it to interface between her MacBook and the audio output from a tape player to transfer the tapes to MP3 or AIFF files. No editing abilities. Just basic sound recording. Works quite well.
    There are many other apps as well. For both recording and editing you can't beat the shareware app Amadeus Pro.
    Why reward points?(Quoted from Discussions Terms of Use.)
    The reward system helps to increase community participation. When a community member gives you (or another member) a reward for providing helpful advice or a solution to their question, your accumulated points will increase your status level within the community.
    Members may reward you with 5 points if they deem that your reply is helpful and 10 points if you post a solution to their issue. Likewise, when you mark a reply as Helpful or Solved in your own created topic, you will be awarding the respondent with the same point values.

  • Can't reset alert sound on Mac Pro

    Last night I set up my new Mac Pro. I reset the alert sound in system preferences, after setting the audio input and output to go through the Kona LHe card installed in the computer. But when I checked the alert sound in the menu bar, it was not the same sound I had set. I tried resetting the sound several times with no luck. Does a Kona card interfere with setting an alert sound of my own choosing? I tried having the alert sound go through the card as well as setting it to go through the internal speaker. Neither setting made any difference. It's a small annoyance but I would really like to hear the alert sound I desire.
    Mac Pro   Mac OS X (10.4.9)   Two 3 GHz Dual-Core Intel Xeon, 2 gb RAM, Kona LHe card, 2 SATA 500 gb hard drives, 2 super drives

    Have you tried contacting the manufacturer of your Kona card?

  • Sound from Mac Pro USB speakers fail

    Sound from the USB ports on my Mac Pro (Early 2009) fail after a couple of seconds.  Sound can still be heard from the Internal Speakers.  I have replaced the USB speakers with several types and brands.  Problem remains.  I can get sound for several second then it quits and can not be restarted.

    Try smc and pram reset.
    See if everything looks ok in Audio MIDI Setup (in Utilities).

  • Selective USB power while Mac Pro sleeps

    My Mac Pro seems to power all USB ports during sleep. I would like to selectively power some ports and not others. For example, I have a utility USB light on the back of the MAC Pro and a CwLinux LCD screen on the front which I would like to see turn off whenever the Mac sleeps (The USB power controller gets hot if these stay on for long periods without airflow).
    Any thing in Leopard that would control this behavior?
    Thanks!

    There is no provided mechanism to selectively control power to the USB or Firewire ports. Normally USB ports shut off when the computer is asleep unless you connect a device the prevents the port from shutting down, which you obviously have. You will just need to get used to disconnecting them when not in use if they don't have power switches.

Maybe you are looking for