Mac Pro clicking in sleep mode.

After a while in sleep mode there is a clicking noise coming from the box. It stops when I wake up the machine. HD appears ok (Disk utility repaired some errors, appears ok now). There was an earlier issue which I suspected to be power related, powered off without warning, would not power on. Had to removed the power cord to stop clicking. When power cord inserted there was a red light showing through the case. These issues seem to have gone away but still leave the clicking after a while in sleep mode. Can only find some info on resetting the SMC but not sure if this would be correct thing to do?

Took mine to a dealer for testing, they couldn't make it happen. Started clicking 10 minutes after connecting it back in my studio. Accidently caught the USB lead from the computer to a powered hub, this switched everything off and I noticed an arching sound from the hub. Replaced the powered USB hub and have not had a problem since.
I was amazed that a USB lead and hub could cause such an issue which appeared to be with the computer itself.

Similar Messages

Mac Pro unexpectedly enters sleep mode

Ok so I installed Leopard last weekend on my Mac Pro and all initially went well with the install. After installation was done, software update appeared and stated I had approximately 4 downloads to install. So I had done this and prepared to reboot. Before rebooting, a window appeared stating that it needed to update the Boot cache. So I clicked on "OK" and the computer went into its shutdown sequence. When the computer reset, I noticed there was no start up chime and the system just sat there with a black screen. I thought perhaps it was updating the boot cache and it may take a while to finish. So I went afk for about an hour and came back. Still nothing. This is when I knew there was something seriously wrong with my system.
After speaking with Apple support and trying several things to get it to boot, the support rep stated that it will need to go into the shop for repairs. I had taken it to an authorized service center and they diagnosed the problem as a bad logic board. They had replaced this and had ran their diagnostic tools on it to make sure it was running normally. They kept it overnight and ran Apple Service diagnostics in a repeating loop on the system. They had also cold booted the system 30+ times per the work order.
After I brought it home and booted it, everything was seemingly running fine. Then I received a page from work (I'm a support rep) which required me to boot into Windows using Boot Camp to solve a client's problem. After I had done this, I booted Leopard back up and was playing around in it for a few minutes to check out some of the new features. I had then ran World of Warcraft to play a bit and to check out the performance increase in Leopard. After about 5 minutes of playing, my system unexpectedly entered sleep mode. Obviously I was confused so I had brought it out of sleep mode by hitting the enter key. The system came back for about 2 seconds and immediately went back into sleep mode again. This happened about 4 or 5 times before I finally shut the system down.
The first thing I did after reboot is to check the energy saver options. Both hard drive and monitor energy options were set to "Never". I then checked for software updates. There was both an SMC firmware update and a Boot Camp EFI(?) firmware update. I had done the SMC firmware update first and then after successfully updating this, I had done the Boot Camp firmware update. After reboot, the system went into sleep mode on its own approximately 5 minutes after reboot. This time I had made sure NOT to run my game as I had a suspicion that this could be causing the problem. It entered sleep mode anyway unexpectedly. After waking it up again by hitting the enter key, the desktop appeared again for about 2 seconds before going right back into sleep mode. I called the service center again and they said I would have to bring it in for them to look at. Needless to say, I am NOT very pleased.
Has anyone ever heard of anything like this happening with a Mac Pro? I had never had any problems when I was running Tiger with any application, not even my game. The service rep where I took it said it was just bad timing that the logic board went during my OS upgrade and that the two had nothing to do with each other. My brother has a Mac Pro as well and he had upgraded to Leopard. Of course his computer works fine where mine is a sleeping fool. Does anyone have any ideas or theories as to what could be causing this? More importantly, does anyone have any suggestions on how I might be able to fix this on my own? If you could please let me know, I would appreciate it. Thank you in advance for your time.

Wow, who are you dealing with? The first time my logic board was replaced, the techs never bothered with looking at anything else as being the problem. However, when I pointed out the power supply fan problem, they focused on that being the cause of the problem and fixed just that. I was somewhat concerned as I know some of these techs do not look at other parts of the machine as potential problem causers. I was afraid that I would hook up my system only to experience the same problem as before. Luckily, that was not the case.
I am glad that your system appears to have the same problem as mine did. I would suggest that if you take it back to them again for a fan fix to have them run the system for about an hour after replacing it. They should be opening apps, checking the iStat widget, etc to try and make it break. If they can't after an hour or so, I think it should be ok.
This whole ordeal makes me question the quality of parts used by Apple. My brother has an iMac G4 where the hard drive died after 2 months of getting it new. Now this issue with mine and yours with the bad logic board and the power supply fan. Who knows how many other customers report hardware related problems?

Help! Got a kernel panic while my 2014 Mac pro was in sleep mode.

I'm having weird issues with my new mac pro while connected to the pegasus2 r4, via thunderbolt. I suspect the issue is related to conflicting power management settings from my pegasus vs the mac pro. Following the advice from pegasus, I turned off the promise utility power management settings. I noticed the external drives would turn on spin up once every hour for one minute while in sleep mode. I assume this is a typical behavior of the "power nap" setting being on. What do you guys think?
Occasionally, while my external drives would spin up in sleep, I'll have a kernel panic that will reboot my computer. Is this due to power nap or the pegasus drives?

and here mis my kernel panic log
Anonymous UUID:       D69D8143-EABF-DB3E-DF0E-6C8D71B99B09
Sat Feb 22 15:21:02 2014
panic(cpu 6 caller 0xffffff800f4b7d51): "!pageList phys_addr"@/SourceCache/xnu/xnu-2422.85.3/iokit/Kernel/IOMemoryDescriptor.cpp:1 490
Backtrace (CPU 6), Frame : Return Address
0xffffff81f08b37f0 : 0xffffff800f022f69
0xffffff81f08b3870 : 0xffffff800f4b7d51
0xffffff81f08b3910 : 0xffffff800f4b7fed
0xffffff81f08b3a10 : 0xffffff800f4b72e8
0xffffff81f08b3a50 : 0xffffff7f8f977afd
0xffffff81f08b3aa0 : 0xffffff7f8f976167
0xffffff81f08b3af0 : 0xffffff800f4cd0bd
0xffffff81f08b3b50 : 0xffffff800f4ade93
0xffffff81f08b3bb0 : 0xffffff7f8f976a4c
0xffffff81f08b3bf0 : 0xffffff800f4cac6f
0xffffff81f08b3d40 : 0xffffff800f0b6088
0xffffff81f08b3e50 : 0xffffff800f026bb1
0xffffff81f08b3e80 : 0xffffff800f0139b5
0xffffff81f08b3ef0 : 0xffffff800f01e003
0xffffff81f08b3f70 : 0xffffff800f0c92ad
0xffffff81f08b3fb0 : 0xffffff800f0f3686
      Kernel Extensions in backtrace:
         com.apple.iokit.IOHIDFamily(2.0)[54E6C360-B687-3491-BE0B-2AE9D4620140]@0xffffff 7f8f975000->0xffffff7f8f9e6fff
            dependency: com.apple.driver.AppleFDEKeyStore(28.30)[558B2575-5197-3C4C-BAD2-8CB465638FA8]@ 0xffffff7f8f96a000
BSD process name corresponding to current thread: ppupsd
Mac OS version:
13B4116
Kernel version:
Darwin Kernel Version 13.0.3: Thu Oct 17 20:41:40 PDT 2013; root:xnu-2422.85.3~1/RELEASE_X86_64
Kernel UUID: AF1DD2E1-F85A-382A-84F5-3D0943039376
Kernel slide:     0x000000000ee00000
Kernel text base: 0xffffff800f000000
System model name: MacPro6,1 (Mac-F60DEB81FF30ACF6)
System uptime in nanoseconds: 3464396193026
last loaded kext at 3389305275513: com.apple.driver.AppleUSBCDC          4.2.1b5 (addr 0xffffff7f918cc000, size 20480)
last unloaded kext at 1895577712686: com.apple.driver.AppleUSBCDC          4.2.1b5 (addr 0xffffff7f918cc000, size 16384)
loaded kexts:
com.promise.driver.stex          5.2.7
com.apple.driver.AppleUSBCDC          4.2.1b5
com.apple.iokit.SCSITaskUserClient          3.6.5
com.apple.filesystems.autofs          3.0
com.apple.driver.AppleBluetoothMultitouch          80.14
com.apple.driver.AudioAUUC          1.60
com.apple.driver.AGPM          100.14.14
com.apple.driver.ApplePlatformEnabler          2.0.9d1
com.apple.driver.X86PlatformShim          1.0.0
com.apple.iokit.IOBluetoothSerialManager          4.2.2f2
com.apple.driver.AppleHDA          2.5.9fc8
com.apple.driver.AppleGraphicsDevicePolicy          3.4.35
com.apple.driver.AppleUpstreamUserClient          3.5.13
com.apple.driver.AppleMCCSControl          1.1.12
com.apple.iokit.IOUserEthernet          1.0.0d1
com.apple.kext.AMDFramebuffer          1.1.6
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport          4.2.2f2
com.apple.Dont_Steal_Mac_OS_X          7.0.0
com.apple.AMDRadeonX4000          1.1.6
com.apple.driver.AppleHWAccess          1
com.apple.driver.AppleLPC          1.7.0
com.apple.driver.AppleMGPUPowerControl          3.4.35
com.apple.driver.AppleIntelMCEReporter          103
com.apple.kext.AMD7000Controller          1.1.6
com.apple.driver.AppleThunderboltIP          1.1.2
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless          1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1
com.apple.BootCache          35
com.apple.driver.XsanFilter          404
com.apple.driver.AppleUSBHub          666.4.0
com.apple.iokit.IOAHCIBlockStorage          2.5.0
com.apple.driver.AppleUSBXHCI          670.4.0
com.apple.iokit.AppleBCM5701Ethernet          3.8.0b9
com.apple.driver.AppleUSBEHCI          660.4.0
com.apple.driver.AirPort.Brcm4360          830.21.56
com.apple.driver.AppleAHCIPort          2.9.5
com.apple.driver.AppleACPIButtons          2.0
com.apple.driver.AppleACPIEC          2.0
com.apple.driver.AppleHPET          1.8
com.apple.driver.AppleRTC          2.0
com.apple.driver.AppleSMBIOS          2.1
com.apple.driver.AppleAPIC          1.7
com.apple.driver.AppleIntelCPUPowerManagementClient          216.0.0
com.apple.nke.applicationfirewall          153
com.apple.security.quarantine          3
com.apple.driver.AppleIntelCPUPowerManagement          216.0.0
com.apple.driver.AppleUSBAudio          2.9.3f17
com.apple.driver.AppleUSBHIDKeyboard          170.15
com.apple.driver.AppleHIDKeyboard          170.15
com.apple.iokit.IOUSBMassStorageClass          3.6.0
com.apple.iokit.IOSCSIBlockCommandsDevice          3.6.5
com.apple.kext.triggers          1.0
com.apple.driver.IOBluetoothHIDDriver          4.2.2f2
com.apple.driver.AppleMultitouchDriver          245.13
com.apple.iokit.IOSerialFamily          10.0.7
com.apple.driver.DspFuncLib          2.5.9fc8
com.apple.vecLib.kext          1.0.0
com.apple.iokit.IOAudioFamily          1.9.4fc11
com.apple.kext.OSvKernDSPLib          1.14
com.apple.driver.AppleSMBusController          1.0.11d1
com.apple.iokit.IOSurface          91
com.apple.iokit.IOBluetoothFamily          4.2.2f2
com.apple.iokit.IOBluetoothHostControllerUSBTransport          4.2.2f2
com.apple.iokit.IOAcceleratorFamily          98.10
com.apple.driver.AppleHDAController          2.5.9fc8
com.apple.iokit.IOHDAFamily          2.5.9fc8
com.apple.driver.X86PlatformPlugin          1.0.0
com.apple.driver.IOPlatformPluginFamily          5.7.0d9
com.apple.driver.AppleSMC          3.1.8
com.apple.driver.AppleGraphicsControl          3.4.35
com.apple.driver.AppleBacklightExpert          1.0.4
com.apple.iokit.IONDRVSupport          2.4
com.apple.kext.AMDSupport          1.1.6
com.apple.AppleGraphicsDeviceControl          3.4.35
com.apple.iokit.IOGraphicsFamily          2.4
com.apple.iokit.IOUSBHIDDriver          660.4.0
com.apple.driver.AppleUSBMergeNub          650.4.0
com.apple.driver.AppleUSBComposite          656.4.1
com.apple.driver.AppleThunderboltDPInAdapter          3.1.6
com.apple.driver.AppleThunderboltDPOutAdapter          3.1.6
com.apple.driver.AppleThunderboltDPAdapterFamily          3.1.6
com.apple.driver.AppleThunderboltPCIUpAdapter          1.4.5
com.apple.driver.AppleThunderboltPCIDownAdapter          1.4.5
com.apple.iokit.IOSCSIParallelFamily          3.0.0
com.apple.iokit.IOSCSIArchitectureModelFamily          3.6.5
com.apple.driver.AppleThunderboltNHI          2.0.0
com.apple.iokit.IOThunderboltFamily          3.2.6
com.apple.iokit.IOUSBUserClient          660.4.2
com.apple.iokit.IOEthernetAVBController          1.0.3b3
com.apple.iokit.IOUSBFamily          670.4.0
com.apple.iokit.IO80211Family          630.35
com.apple.driver.mDNSOffloadUserClient          1.0.1b4
com.apple.iokit.IONetworkingFamily          3.2
com.apple.iokit.IOAHCIFamily          2.6.5
com.apple.driver.AppleEFINVRAM          2.0
com.apple.iokit.IOHIDFamily          2.0.0
com.apple.iokit.IOSMBusFamily          1.1
com.apple.driver.AppleEFIRuntime          2.0
com.apple.security.sandbox          278.10
com.apple.kext.AppleMatch          1.0.0d1
com.apple.security.TMSafetyNet          7
com.apple.driver.AppleKeyStore          2
com.apple.driver.DiskImages          371.1
com.apple.iokit.IOStorageFamily          1.9
com.apple.iokit.IOReportFamily          23
com.apple.driver.AppleFDEKeyStore          28.30
com.apple.driver.AppleACPIPlatform          2.0
com.apple.iokit.IOPCIFamily          2.9
com.apple.iokit.IOACPIFamily          1.4
com.apple.kec.pthread          1
com.apple.kec.corecrypto          1.0
System Profile:
Model: MacPro6,1, BootROM MP61.0116.B04, 6 processors, 6-Core Intel Xeon E5, 3.5 GHz, 16 GB, SMC 2.20f16
Graphics: AMD FirePro D500, AMD FirePro D500, PCIe, 3072 MB
Graphics: AMD FirePro D500, AMD FirePro D500, PCIe, 3072 MB
Memory Module: DIMM1, 4 GB, DDR3 ECC, 1867 MHz, 0x02FE, 0x45424A3430454738424657422D4A532D4620
Memory Module: DIMM2, 4 GB, DDR3 ECC, 1867 MHz, 0x02FE, 0x45424A3430454738424657422D4A532D4620
Memory Module: DIMM3, 4 GB, DDR3 ECC, 1867 MHz, 0x02FE, 0x45424A3430454738424657422D4A532D4620
Memory Module: DIMM4, 4 GB, DDR3 ECC, 1867 MHz, 0x02FE, 0x45424A3430454738424657422D4A532D4620
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x135), Broadcom BCM43xx 1.0 (6.30.223.154.56)
Bluetooth: Version 4.2.2f2 13084, 3 services, 23 devices, 1 incoming serial ports
Network Service: Ethernet 1, Ethernet, en0
PCI Card: AMD FirePro D500, Display Controller, Slot-2
PCI Card: AMD FirePro D500, Display Controller, Slot-1
PCI Card: pci105a,8760, RAID Controller, Thunderbolt@158,0,0
Serial ATA Device: APPLE SSD SM0256F, 251 GB
USB Device: Hub
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
USB Device: Hub
USB Device: Hub
USB Device: Keyboard Hub
USB Device: Apple Keyboard
USB Device: Flash Card Reader
USB Device: Cintiq 24HD HUB
USB Device: Cintiq 24HD Tablet
USB Device: MM-1
USB Device: PR1500LCD
Thunderbolt Bus: Mac Pro, Apple Inc., 19.2
Thunderbolt Bus: Mac Pro, Apple Inc., 19.2
Thunderbolt Device: Pegasus2-R, Promise Technology, Inc., 3, 19.2
Thunderbolt Bus: Mac Pro, Apple Inc., 19.2

When I use I tunes radio,click pause,leave mac to go into sleep mode,wake mac

when I use I tunes radio,click pause,leave mac to go into sleep mode,return press play I tunes will not resatrt on same station. I have to pick another for a few seconds and then return to original. then it works ok.
not a big problem but its annoying. Any ideas ?
thanks very much

I lugged the G4 around town to three different computer repair shops, and they all confirmed that I had installed the fans correctly, and all fans were running fine. Of course, this only makes the problem harder to solve.
Furthermore, my friend was using the G4 last night when it was a cool 72 degrees (F) in his apartment, and the computer still forced itself into Sleep mode after just over an hour of use. He was using Final Cut Pro at the time, editing a project spread across two external FireWire hard drives. I just can't imagine this amount of activity overheating the G4, which was my editing workhorse for six years before handing it over to my friend.
When I replaced the cooling fans, I did select new fans with slightly lower airflow than the original fans (which many people have replaced, due to the amount of noise they produce). Any opinions on whether that could be the issue?
_Case fan:_
Original: 151.85 CFM airflow
Replacement: 109.6 CFM airflow
_Power Supply fans:_
Original: 38.1 CFM airflow
Replacement: 26.5 CFM airflow

HT1776 How can I get my MAC Book Pro out of sleep mode?

Help Please! My MAC Book Stays in sleep mode and does not want to wake up again? Any help appreciated.

Open the terminal app. (Applications => Utilities => Terminal)
Copy and paste the following code.
sudo nvram boot-args=""
then restart your mac.
if you will want to stick with the safe boot again use the following code.
sudo nvram boot-args="-x"

Mac Pro will not sleep

As requested, this is a new post from the "my mac will not wake up" thread.
I am having trouble putting my Mac to sleep. When I try to enter sleep mode, the fans make noise like it wants to restart, then the monitors go out and immediately back on. It wont stay in sleep mode.
Ned Snowing seemed to have a pretty good idea of what the problem might be. Ned, can you please follow up from the other post? I think we might be on to something.
Also, I have a seagate 300gb HD installed in bay two, if that factor is relevant.
Mac Pro 2.66Ghz Mac OS X (10.4.7) 2GB RAM ATI X1900 Dual 20" Dell Widescreen Monitors

I've got a Mac Pro and this is what I see when my Mac sleeps... BUT... I don't see anything when it tries to sleep and doesn't... or rather, when it is supposed to sleep...
Dec 28 10:52:29 Justins-Cool-Mac-Pro kernel[0]: AFPSleepWakeHandler: going to sleep
Dec 28 10:52:29 Justins-Cool-Mac-Pro /etc/rc.sleep: executing .sleep of user justin
Dec 28 10:52:31 Justins-Cool-Mac-Pro kernel[0]: hibernate image path: /var/vm/sleepimage
Dec 28 10:52:31 Justins-Cool-Mac-Pro kernel[0]: sizeof(IOHibernateImageHeader) == 512
Dec 28 10:52:31 Justins-Cool-Mac-Pro kernel[0]: Opened file /var/vm/sleepimage, size 2147483648, partition base 0xc805000, maxio 400000
Dec 28 10:52:31 Justins-Cool-Mac-Pro kernel[0]: hibernate image major 14, minor 2, blocksize 512, pollers 3
Dec 28 10:52:31 Justins-Cool-Mac-Pro kernel[0]: hibernateallocpages flags 00000000, gobbling 0 pages
Dec 28 10:52:32 Justins-Cool-Mac-Pro kernel[0]: Intel8254x -- Link down -- 00:17:f2:01:83:ec -- called by disable() -- Auto-Neg Advertise Reg (04d) = 0xde1, Link Partner Ability Reg (05d) = 0x45e1
Dec 28 10:52:32 Justins-Cool-Mac-Pro kernel[0]: Intel8254x -- Link down -- 00:17:f2:01:83:ed -- called by disable() -- Auto-Neg Advertise Reg (04d) = 0xde1, Link Partner Ability Reg (05d) = 0x0

Mac shuts down in sleep mode.

This just started to happen to my mac pro quad intel running the latest SNOW software. My mac shuts down in sleep mode. I tried to zap pram, but it ill not allow me to do this.
I also check the internal battery using a small program and its a full charge. Does anyone know how to fix this problem?
Thanks,
Tony

godlovestodance,
your Mid 2012 needs 1600 MHz memory modules. Is your currently installed RAM of this variety?
In your current setup, is it your 1 TB HDD or your 256 GB SSD that is in the optical drive bay?
One thing you can try is this: boot your MacBook Pro into Recovery mode by holding down a Command key and the R key as it starts up. Once the Mac OS X Utilities menu appears, select Disk Utility. On the left-hand side of the Disk Utility window, select your internal disk’s boot partition (typically called “Macintosh HD”). On the right-hand side, press the Verify Disk button if it’s not greyed out; if it is greyed out, or if it reports that errors were found, press the Repair Disk button. Once the verification/repair is completed, exit Disk Utility and select Restart from the Apple menu to restart in normal mode. Does it still crash because of an extended sleep?

I occasionally have issues waking my macbook pro up from sleep mode and have to restart the computer. The apple store replaced the sleep part but the problem is still there

I occasionally have issues waking my macbook pro up from sleep mode resulting in my need to restart the computer. I dislike all of my programs opening at once when I do get the computer started becasue it slows the cpu down. The apple store replaced the sleep part but the problem is still there. Note: i never had this problem with snow leopard

I'm not certain but my new MBA 13...when in sleep mode comes back on from a black screen when I simply click on the left mouse button. Also, one time I did a SECURE EMPTY TRASH on files that totalled more than 1GB and it took so long that the fan kept increasing in speed so I pressed on the POWER button and the MBA shut...I was able to boot up with no problem. As a rule, I now only do secured erases for trash bin data totalling 500mb or less...anything above that gets a regular erase (dump).

Why won't my Mac Pro go to sleep?

Why won't my Mac Pro go to sleep?

Hi X,
I've been having the same problem of mac pro not going to sleep. I think its to do with some universal audio drivers installed with a recent hardware interface I've added.
the terminal app in response to above line reads;
com.uaudio.driver.UAD2System(6.3.1)
com.uaudio.driver.UAFWAudio(4.0.0
com.digidesign.iokit.DigiDal(9.0.6f4)
com.paceap.kext.pacesupport.snowleopard(5.8)
launch agents (in user)
com.adobe.ARM.202f4087f2bbde52e3ac2df389f53a4f123223c9cc56a8fd83a6f7ae.plist
com.apple.FolderActions.enabled.plist
com.apple.FolderActions.folders.plist
com.google.keystone.agent.plist
launch agents and daemons - too many to list
any idea from this or would you need to see all the files you listed in Mona Gorillas query?
appreciate your input

Now I can start my Mac Pro only in "secure mode." I'm still appears on all monitors a series of bands such as seen in the attached file. Someone can give me a diagnosis? Thank you.

Now I can start my Mac Pro only in "secure mode."
I'm still appears on all monitors a series of bands such as seen in the attached file.
Someone can give me a diagnosis?
Thank you.

The attached file is not showing.
In Safe/Secure Mode many Drivers are not loaded. When your computer works in Safe Mode, but not regular mode, two types of problems are implicated:
1) Third-party kernel extensions. a conflict with some part of Mac OS X means that when those extensions load, your Mac can not run.
2) Failed graphics card. Since the Driver for the display is not loaded, the display in Safe Mode uses a very simple built-in Driver. In regular mode, once the driver is loaded, all parts of the graphics card must be working, or you could get bands of color on the display (which is just what you reported).
Which Model Mac Pro Tower or MacBook Pro is this?

Using Mac Pro in Target Disk Mode Connected to MacBook Pro

Hi all,
I am trying to set up two macs to run off of the same monitors/keyboard/mouse/etc. I know about KVMs, but they are too expensive for my current setup.
I want to know if it's possible to run a 2006 Mac Pro in target disk mode connected to a brand new MacBook Pro 13" via a firewire to thunderbolt converter.
I would need to access the files, but also run the applications from the Mac Pro on the MacBook Pro.
Would such a setup work? Would I have to reboot each time I wanted to switch machines? Would there be a significant lag in the Mac Pro's performance?
Any tips or links to articles/etc. would be appreciated.
Thanks,
Nick

Hi Niel,
Thanks for the speedy response.
I should have clarified that I know that I can access the drive like a firewire drive. I'm more curious as to whether I can either:
1. use it's applications in target disk mode (based on your answer -- No, unless all the necessary system components are identical between the two computers).
2. Boot from the Target Disk computer as if it were a separate drive of my main computer. If so, since this is Firewire and not SATA, will I notice a severe loss of processing power?
Nick

Mac Pro will not sleep after reboot from Win 7 into OS X

I have the same problem as mentioned in this short thread; http://discussions.apple.com/message.jspa?messageID=11410973
Does anyone have any more information on this?
The problems started (I think) after I replaced my Nvidia GT120 with a ATI Radeon HD 5770.

I've got a Mac Pro and this is what I see when my Mac sleeps... BUT... I don't see anything when it tries to sleep and doesn't... or rather, when it is supposed to sleep...
Dec 28 10:52:29 Justins-Cool-Mac-Pro kernel[0]: AFPSleepWakeHandler: going to sleep
Dec 28 10:52:29 Justins-Cool-Mac-Pro /etc/rc.sleep: executing .sleep of user justin
Dec 28 10:52:31 Justins-Cool-Mac-Pro kernel[0]: hibernate image path: /var/vm/sleepimage
Dec 28 10:52:31 Justins-Cool-Mac-Pro kernel[0]: sizeof(IOHibernateImageHeader) == 512
Dec 28 10:52:31 Justins-Cool-Mac-Pro kernel[0]: Opened file /var/vm/sleepimage, size 2147483648, partition base 0xc805000, maxio 400000
Dec 28 10:52:31 Justins-Cool-Mac-Pro kernel[0]: hibernate image major 14, minor 2, blocksize 512, pollers 3
Dec 28 10:52:31 Justins-Cool-Mac-Pro kernel[0]: hibernateallocpages flags 00000000, gobbling 0 pages
Dec 28 10:52:32 Justins-Cool-Mac-Pro kernel[0]: Intel8254x -- Link down -- 00:17:f2:01:83:ec -- called by disable() -- Auto-Neg Advertise Reg (04d) = 0xde1, Link Partner Ability Reg (05d) = 0x45e1
Dec 28 10:52:32 Justins-Cool-Mac-Pro kernel[0]: Intel8254x -- Link down -- 00:17:f2:01:83:ed -- called by disable() -- Auto-Neg Advertise Reg (04d) = 0xde1, Link Partner Ability Reg (05d) = 0x0

My Mac pro is in off mode permanently: black screen, no light (not even the cable), not sound...just dead! I bought it 3 months ago and this is disappointing. Any advice?

My Mac pro is in off mode permanently: black screen, no light (not even the cable), not sound...just dead! I bought it 3 months ago and this is disappointing. Any advice?

Reset the SMC and then test: http://support.apple.com/kb/HT3964
Otherwise as the other folks indicated, its time for diagnostics / service. Make an appointment with a Mac Genius at an Apple store, contact AppleCare via phone, or contact an Apple Authorized Service Provider for assistance.

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 refuses to sleep on it's own.

My Mac Pro used to be able to go to sleep by setting the Energy Saver settings to automatically sleep after so many minutes. It no longer sleeps at all on it's own. Lemme explain.
If I put my computer to sleep with the Apple Menu, or Power Button or any other manual method of sleeping my computer, it works but, if I leave it to sleep on it's own only the screen will go black. When I move my mouse, the screen will instantly come back on as if only the screen was sleeping. I know what a normal sleep sounds like... I'd hear a few clicks and hard disk spin downs and then my screen would go black but, it does not do that.
To prevent a bunch of people asking the "Have you tried...?" questions, I'll go ahead and list the things that I have already tried and failed.
1. Repaired permissions
2. Unplugged any external gadget (USB and FireWire)
3. Tried a brand new user
4. Tried Restarting (Hey, couldn't hurt to just Restart)
5. Checked for weird login items (Only EyeTV Helper which has been there the whole time even before the sleep problem)
6. Made sure my software was up to date (latest security and OS Updates)
7. Booted into "Safe Mode"
8. Checked Activity Monitor for any strange processes running
9. Checked for scanner software (Couldn't find it)
10. Tried switching the Mighty Mouse to the right keyboard USB port
11. Tried un-mounting all hard drives (except for boot drive)
I can't think of anything else to try. I can't believe that Safe Mode or a new user couldn't clear the problem. Has anyone else had this problem?
I'm running Mac OS 10.4.9 on a Mac Pro with 3GB of (working) RAM and 3 internal SATA hard drives and 2 internal SuperDrives.

My Mac Pro used to be able to go to sleep by setting
the Energy Saver settings to automatically sleep
after so many minutes. It no longer sleeps at all on
it's own. Lemme explain.
If I put my computer to sleep with the Apple Menu, or
Power Button or any other manual method of sleeping
my computer, it works but, if I leave it to sleep on
it's own only the screen will go black. When I move
my mouse, the screen will instantly come back on as
if only the screen was sleeping. I know what a normal
sleep sounds like... I'd hear a few clicks and hard
disk spin downs and then my screen would go black
but, it does not do that.
To prevent a bunch of people asking the "Have you
tried...?" questions, I'll go ahead and list the
things that I have already tried and failed.
1. Repaired permissions
2. Unplugged any external gadget (USB and FireWire)
3. Tried a brand new user
4. Tried Restarting (Hey, couldn't hurt to just
Restart)
5. Checked for weird login items (Only EyeTV Helper
which has been there the whole time even before the
sleep problem)
6. Made sure my software was up to date (latest
security and OS Updates)
7. Booted into "Safe Mode"
8. Checked Activity Monitor for any strange processes
running
9. Checked for scanner software (Couldn't find it)
10. Tried switching the Mighty Mouse to the right
keyboard USB port
11. Tried un-mounting all hard drives (except for
boot drive)
I can't think of anything else to try. I can't
believe that Safe Mode or a new user couldn't clear
the problem. Has anyone else had this problem?
I'm running Mac OS 10.4.9 on a Mac Pro with 3GB of
(working) RAM and 3 internal SATA hard drives and 2
internal SuperDrives.
Reset PRAM
Trash this file:
/Library/Preferences/System Configuration/com.apple,PowerManagement.plist
Then re-boot. Set Power preferences to your needs.
William

Mac Pro clicking in sleep mode.

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