OS X 10.6.7 (Mac Pro) issues with Sleep

Since the recent update, my Mac is not going to sleep consistently. This morning, for example, it will attempt to go to sleep, then immediately wake up. There are no extra apps working, no stimulus from the keyboard or mouse.
Is this a known bug? Is there a work around?
Thanks.

To access Keyboard Viewer:
Choose Apple menu > System Preferences and click International.
Click Input Menu, then select the checkbox next to Keyboard Viewer.
Select the On checkbox next to the language whose keyboard layout you want to use.
Choose Show Keyboard Viewer from the Input menu on the right side of the menu bar (the one that looks like a flag).
https://discussions.apple.com/message/15004494#15004494

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Mac Pro 2008 with 8800 GT, hard freezes with screen savers/OpenGL. You too?

I have been experiencing random intermittent hard crashes of my "early 2008" model 8-core Mac Pro. Now I have finally found an easy reproducible test case (see below), and hope others will try it and post the results. This is a video-driver related crash that I have now duplicated with two different video cards.
The symptom is that my screen randomly freezes. The mouse moves, but there's no way to use the Mac[1]. Holding the Power button to force the Mac to shutdown is the only way out.
Usually, this occurs when I get to my office in the morning, or after the gym. That's because the screen saver is running. I found that the screensaver, other OpenGL/3D type applications, are what triggers this bug.
The bug seems to be with the graphics driver. Immediately before the freeze, messages like this are printed in the system log:
Mar 26 18:34:14 Mac-Pro kernel[0]: NVChannel(GL): Graphics channel exception!
status = 0xffff info32 = 0xd = GR: SW Notify Error
Mar 26 18:34:14 Mac-Pro kernel[0]: 0000000c
Mar 26 18:34:14 Mac-Pro kernel[0]: 00200000 0000502d 00000470 00000000
Mar 26 18:34:14 Mac-Pro kernel[0]: 00000482 000002ac 00000003 00000003
Mar 26 18:34:14 Mac-Pro kernel[0]: 00000000 00000000 01be0003
Mar 26 18:34:14 Mac-Pro kernel[0]: NVChannel(GL): Graphics channel exception!
status = 0xffff info32 = 0x3 = Fifo: Unknown Method Error
Mar 26 18:34:14 Mac-Pro kernel[0]: 0000000b
Mar 26 18:34:14 Mac-Pro kernel[0]: NVChannel(GL): Graphics channel exception!
status = 0xffff info32 = 0x3 = Fifo: Unknown Method Error
Other errors like these also appear (the actual log output volume is too large for this forum):
Mar 26 21:15:15 Mac-Pro kernel[0]: NVChannel(GL): Graphics channel exception! status = 0xffff info32 = 0x6 = Fifo: Parse Error
Mar 26 18:34:14 Mac-Pro kernel[0]: NVChannel(GL): Graphics channel exception! status = 0xffff info32 = 0xd = GR: SW Notify Error
Anyway, finally I found on another thread about a similar issue[2], a recommendation to run Folding@Home program to trigger the freeze. They were talking about another Mac model, but sure enough, it triggers my problem every time. I downloaded the client[3], installed it, and then launched the app which gets put in the Applications folder. It doesn't even finish bouncing once in the dock before the Mac Pro freezes.
This is not a bug specific to Folding@Home; juding from the log messages and the effect, this is exactly the same crash that is intermittently triggered by the default Mac OS X screensavers (I use Arabesque, but I think any OpenGL screen saver does it). It's just that running Folding@Home is an easier way to trigger the bug than leaving your screensaver running for hours.
So, that is pretty unfortunate, right? I mean, not only can my new Mac Pro not sleep without losing all unsaved data (yes, I have the reboot-instead-of-wake problem[4], too, but that is another issue...) but it also crashes at random whenever the screen saver runs for a while, or somebody uses OpenGL programs. I have set my machine to never use the screen saver, but still.
So, first and foremost, my question for other 2008 Mac Pro owners with the 8800 video card is: does your Mac puke all over itself when you launch Folding@Home?
I just found it a little bit hard to believe that every Mac owner of the most expensive new Mac and the higher end video card will have these crashes. It could be, but it seemed far-fetched. So I tried some troubleshooting:
a
1.) I considered that I had a bad video card, so I got another GeForce 8800 GT and installed that. Still crashed.
2.) I disconnected my second monitor, and tried it with only one monitor. Still crashed.
3.) I booted from the pristine boot disk my Mac shipped with (10.5.1). Still crashed.
4.) I reduced the resolution on my 30" Cinema display to 800x600. Still crashed.
5.) Just to stave off the usual chorus of "try zapping your PRAM" posts, I zapped the PRAM. Of course, this did nothing (I don't think this has really fixed a problem since the 1990s...). Anyway, it still crashed.
6.) In doing all these tests, I disconnected all USB/FireWire peripherals.
7.) My Mac is totally up-to-date with Software Update as of Thu, Mar 27, 2008. Mac OS X 10.5.2.
I don't want to return this Mac to Apple; it is wicked fast and that really helps me with my work. But, the frequent crashing really is a productivity-killer.
So: does every 2008 Mac Pro owner with an 8800 GT have this problem?
(Note: there are lots of similar problems with other Macs and the new Mac OS X 10.5... I hope to specifically address this particular model and crash in this thread.)
If not, I will go to the next extreme step: pulling out some of my RAM. I have 12GB of RAM, and it all seems to work fine, no parity errors or anything. But I know sometimes problems don't happen unless there's "too much" RAM, "too high" resolution, and so on. But I would like to hear from others before I go banging on my precious DIMMs and riser cards.
Thanks for any information!
The next step will be to determine if this is just another unfortunate defect that affects ALL 2088 Mac Pros (in which case I would want to keep my fast Mac and wait for fixed drivers), or if perhaps just a subset of them have defective video cards that cause the driver to crash in this way (in which case I would want a replacement).
---------- NOTES: ----------
[1]: I can connect via SSH on the command line to the Mac. However, the GUI environment seems borked; opening apps or trying to gracefully quit them via AppleScript either does not work or really hard freezes everything, such that SSH no longer works either.
[2]: A similar (but perhaps different) issue affecting notebooks is discussed here, and there are some people with Mac Pros, too: http://discussions.apple.com/thread.jspa?messageID=6786960
[3]: The Folding @ Home client, which can be used to trigger this bug, can be gotten here: http://folding.stanford.edu/English/Download
[4]: The severe defect affecting many (most?) 2008 Mac Pro machines' ability to sleep without losing data is discussed in this other thread: http://discussions.apple.com/thread.jspa?threadID=1353551

Hello guys, thank you for the replies.
I do have more data at this point.
ujeezy: Those posts on MacNN and others like them did give some clues.
Jon BWFC: I think you are (partly) right that it's (partly) an issue with the driver. But I have confirmed with a fair degree of certainty in my case that it is a hardware issue too, likely with the video card and not the Mac Pro itself.
cmcom: I think it sounds like you problem is different than the one we're talking about (although who knows, the driver could be causing that too). The freeze we are seeing locks up the whole Mac, and no application crash report is produced.
I had another GeForce 8800 card, so I went through some exhaustive troubleshooting. I tested each card, installed in each of the 16x slots, booting from either my normal 10.5.2 boot disk or a clone of the pristine virgin system disk that shipped with the Mac, and tried to see if the Mac would crash.
Unfortunately this was harder than it seems, because:
a.) both my GeForce 8800 cards appear to be defective, but in different ways (see [1] and [2] below)
b.) In my testing, I thought I was seeing the crash sometimes, but later I discovered that there are different ways to make the Mac crash like this. That is, there are bugs in Mac OS X 10.5.x (probably in the NVIDIA driver) that cause similar crashes, and these bugs occur on all Mac Pro units and even other Mac models, without any hardware defects. Unfortunately, the Folding@home exercises one such bug.[3]
So the upshot is, all those times I was using Folding@home to test this issue were bogus, because Folding@home crashes any Mac Pro with the NVIDIA card, and crashes MacBook Pro machines with NVIDIA chips as well.
Argh! So I had to retest. It took a couple of days but I found another reliable way to crash my Mac Pro, more quickly than just leaving the screensaver on for a day or two: run this OpenGL virtual fish tank simulator[4] for 2-3 minutes. Unlike the Folding@home test, this did not crash any of my other Macs, and after exhaustive testing I found that it ONLY crashed the Mac Pro with one of the GeForce 880 cards installed, and not the other one. This was regardless of what slot it was installed in or what boot disk was used.
Whew! So, I concluded that indeed, there is a hardware defect in one of my GeForce 8800 cards which causes the machine to lock up. [2]
What made this problem much harder to deal with was the fact that Mac OS X (specifically the graphics driver parts of the OS, perhaps NVIDIA-specific) crashes with these same symptoms in other cases too. Like when you run Folding@home, or in some of these cases people are talking about with their MacBook Pro machines.
So, when there is a bona-fide hardware defect, it is really hard to isolate. (It took me like four days.)
The thing is, the defective NVIDIA card that crashes the Mac[2] was a REPLACEMENT card for the 8800 card that shipped with my Mac. I called Apple about the video artifacts I was seeing and they replaced the card.
I am now running the original card (and suffering the ugly video artifacts, but no crashes). At my own expense, I ordered an ATI card (the RADEON HD 2600 XT) and I will install that.
I hope someday to have my Mac work without graphics glitches or crashes. For now, operating (mostly) without crashes will have to do.
The original problem with this Mac continues, though: the video doesn't work correctly; it starts displaying visual artifacts after 1-72 hours of use[1]. That could either be because:
a.) a hardware defect in that video card
b.) a software problem with the driver/OS
c.) a hardware defect in the Mac itself
I strongly suspect A, but hopefully my buying a different card and testing with that will help further isolate what is wrong.
I am marking this thread "solved" because the specific issue I originally posted about has been resolved: the GeForce 8800 card causing the crashes is defective, and using another card fixes that issue.
[1]: The original GeForce 8800 card that shipped with my Mac Pro exhibited annoying-but-not-deadly video artifacts, which can be seen here: http://masonmark.com/wp-content/uploads/2008/04/bogusvideoartifacts.jpg
[2]: Apple replaced the video card, and that is when my deadly video-corruption-plus-frozen-Mac crash problem began. A screenshot example of that problem can be seen here: http://masonmark.com/wp-content/uploads/2008/04/crashedmac_pro_akashitball.jpg
[3]: The red herring in this case was the Mac OS X bug (seemingly specific to NVIDIA-equipped Macs including Mac Pro and MacBook Pro) that causes a very similar full system crash. This bug can easily be triggered by running the Folding@home version "6.10beta2" demo application. That is a serious bug, and since my employer is a Mac software company I reported this bug to Apple via the official channel. It is Apple bug number 5830772.
[4]: The OpenGL fish tank simulator I found, which would trigger the system crash caused by my defective 8800 video card (but would not crash any other Mac, or crash my Mac Pro with the other 8800 video card installed) can be found at: http://uri.cat/software/Fish/

Since Snow Leopard, Mac Pro will not sleep with Apple wireless keyboard

I have an odd problem, now on 2 Mac Pro (Nehalem) with 10.6.1:
Since Snow Leopard, the system will not sleep as long as a) the user is logged on (any users/profile) and b) the Apple aluminum wireless keyboard is 'attached'.
If I log off first, sleep works fine. If I turn the keyboard off first, it's fine. But if hitting 'sleep' when logged on, the screen turns dark, sleep process begins, but the system comes right back (with a note 'keyboard disconnected'.
It's as if the keyboard disconnects after sleep, but the system still monitors it, and wakes up.
Note: Wake for bluetooth devices IS NOT ENABLED!
Here is the console log (relevant info):
10/18/09 4:57:33 PM kernel System Sleep
10/18/09 4:57:48 PM kernel Wake reason = UHC1
10/18/09 4:57:48 PM kernel System Wake
10/18/09 4:57:48 PM kernel Previous Sleep Cause: 5
10/18/09 4:57:48 PM kernel USB (UHCI):Port 1 on bus 0x1d has remote wakeup from some device
10/18/09 4:58:53 PM kernel System Sleep
10/18/09 4:58:55 PM kernel Wake reason = UHC6
10/18/09 4:58:55 PM kernel System Wake
10/18/09 4:58:55 PM kernel Previous Sleep Cause: 5
10/18/09 4:58:55 PM kernel USB (UHCI):Port 1 on bus 0x5a has remote wakeup from some device
Does anyone have any idea? While on, the keyboard never disconnects - i.e. I don't have any other issues with BT or the keyboard (this is the 2nd I tried).
Also, my apologies for double-posting this earlier in a different forum; cheers!
Thanks,
Dan

Hi,
and thanks for posting that.
That's too bad. I am probably going to log off if needed, rather than going wired, but I can't believe that this might be more prevalent than just me and there is no 'fix'...
Anyone ?!
Thanks as always,
Dan

I'm trying to connect my 30" Cinema Display to my new Mac Pro along with a new Apple 23'" monitor. The new Apple monitor is fine. On the cinema monitor everything is blown up pretty large. Any ideas on how to solve this?

I'm trying to connect my 30" Cinema Display to my new Mac Pro along with a new Apple 23'" monitor. The new Apple monitor is fine. On the cinema monitor everything is blown up pretty large. Any ideas on how to solve this?

The 30" display needs a DUAL-LINK adapter.
<http://store.apple.com/us/product/MB571Z/A/mini-displayport-to-dual-link-dvi-ada pter>

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

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

I can't get my Mac Pro pair with the ipad

I can't get my Mac pro pair with the iPad

For what purpose? It isn't possible to transfer files by way of Bluetooth from the iPad to Mc.
Stedman

What kind of power regulator will you recommend for an vintage Mac Pro tower with 2 displays?

What kind of power regulator will you recommend for an vintage Mac Pro tower with 2 displays?

Cyberpower 1500VA UPS ~$200

HT1338 I own the Mac Pro Desktop with the older OS X 10.5.8. Can I upgrade to a newer version?

I own the Mac Pro Desktop with the older OS X 10.5.8. Can I upgrade to a newer version? Will it affect my docs etc currently stored on hard drive's? How much will this cost?

If you have a 2006 or 2007 model you can upgrade it to Lion - 10.7.x. If it's a 2008 or later model you can upgrade to the current version of Mountain Lion. Doing so requires Snow Leopard 10.6.8:
Upgrade Paths to Snow Leopard, Lion, and/or Mountain Lion
You can upgrade to Mountain Lion from Lion or directly from Snow Leopard. Mountain Lion can be downloaded from the Mac App Store for $19.99. To access the App Store you must have Snow Leopard 10.6.6 or later installed.
Upgrading to Snow Leopard
You can purchase Snow Leopard through the Apple Store: Mac OS X 10.6 Snow Leopard — Apple Store (U.S.). The price is $19.99 plus tax. You will be sent physical media by mail after placing your order.
After you install Snow Leopard you will have to download and install the Mac OS X 10.6.8 Update Combo v1.1 to update Snow Leopard to 10.6.8 and give you access to the App Store. Access to the App Store enables you to download Mountain Lion if your computer meets the requirements.
     Snow Leopard General Requirements
       1. Mac computer with an Intel processor
       2. 1GB of memory
       3. 5GB of available disk space
       4. DVD drive for installation
       5. Some features require a compatible Internet service provider;
           fees may apply.
       6. Some features require Apple’s iCloud services; fees and
           terms apply.
Upgrading to Lion
If your computer does not meet the requirements to install Mountain Lion, it may still meet the requirements to install Lion.
You can purchase Lion by contacting Customer Service: Contacting Apple for support and service — this includes international calling numbers. The cost is $19.99 (as it was before) plus tax. It's a download. You will get an email containing a redemption code that you then use at the Mac App Store to download Lion. Save a copy of that installer to your Downloads folder because the installer deletes itself at the end of the installation.
     Lion System Requirements
       1. Mac computer with an Intel Core 2 Duo, Core i3, Core i5, Core i7,
           or Xeon processor
       2. 2GB of memory
       3. OS X v10.6.6 or later (v10.6.8 recommended)
       4. 7GB of available space
       5. Some features require an Apple ID; terms apply.
Upgrading to Mountain Lion
To upgrade to Mountain Lion you must have Snow Leopard 10.6.8 or Lion installed. Purchase and download Mountain Lion from the App Store. Sign in using your Apple ID. Mountain Lion is $19.99 plus tax. The file is quite large, over 4 GBs, so allow some time to download. It would be preferable to use Ethernet because it is nearly four times faster than wireless.
     OS X Mountain Lion — System Requirements
       Macs that can be upgraded to OS X Mountain Lion
         1. iMac (Mid 2007 or newer) — Model Identifier 7,1 or later
         2. MacBook (Late 2008 Aluminum, or Early 2009 or newer) —
             Model Identifier 5,1 or later
         3. MacBook Pro (Mid/Late 2007 or newer) — Model Identifier 3,1 or later
         4. MacBook Air (Late 2008 or newer) — Model Identifier 2,1 or later
         5. Mac mini (Early 2009 or newer) — Model Identifier 3,1 or later
         6. Mac Pro (Early 2008 or newer) — Model Identifier 3,1 or later
         7. Xserve (Early 2009) — Model Identifier 3,1 or later
To find the model identifier open System Profiler in the Utilities folder. It's displayed in the panel on the right.
Are my applications compatible?
         See App Compatibility Table — RoaringApps.
     For a complete How-To introduction from Apple see Upgrade to OS X Mountain Lion.
Back up your current system to an external drive or to an available internal drive by making a bootable clone:
Clone using Restore Option of Disk Utility
1. Open Disk Utility in the Utilities folder.
2. Select the destination volume from the left side list.
3. Click on the Restore tab in the DU main window.
4. Select the destination volume from the left side list and drag
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5. Select the source volume from the left side list and drag it to
      the Source entry field.
6. Double-check you got it right, then click on the Restore button.
Destination means the external backup drive. Source means the internal startup drive.

Why dont the Mac Pro's with Retina Displays have a CD/DVD drive?

Why dont the Mac Pro's with Retina Displays have a CD/DVD drive? Will Apple eventually stop producing CD/DVD drives?

Gethin R wrote:
Why dont the Mac Pro's with Retina Displays have a CD/DVD drive?
Because Apple did not put one in there.
Will Apple eventually stop producing CD/DVD drives?
We can't really answer that, but it would not surprise me. More and more of the computers being produced by Apple lack an internal optical drive. If you really need one, get an external such as LowLuster suggests.
Best of luck.

Is the late 2013 mac pro compatible with 10.8.5

Is the late 2013 mac pro compatible with 10.8.5

No, except through emulation inside a product such as VirtualBox, Parallels Desktop, or VMware Fusion.
(105011)

When the new Mac Pro's with E5 Processor coming out? Please help

Hello People.
I am in desperate situation at the moment. I had a late 2008 Mac pro which i recently sold and bought the new 8core 2.4ghz Mac pro from best buy about a week ago. As soon as i bought it, i found out that Apple is coming out with a new Mac Pro loaded with the new xeon E5 processor. My question is that when Apple is coming out with the computer since the rumor said its coming out in the beginning of March. I paid $3400 for the new computer and i really want the one which has all the new stuff in it. I have about 2 weeks left to return the computer to Best Buy and at the moment don't know what do.
Does anyone has answer to my question?
Thanks

Seeing no one, not WSJ or ComputerWorld or CNBC, just speculation. For all we know it will be another mid-Summer too..
I do think the 2.4 8-core is a ''weak' system choice. More apps and more productive to go with a higher clocked 6-core or something.
I'd direct attention to www.macperformanceguide.com that argues, if you need it don't postpone for what might be.
http://macperformanceguide.com/blog/2012/20120319_1-MacProNowOrWait.html
Even if there was an annoucement it often takes time to sort out, ship, etc.

Is my mac pro compatible with mountain lion?

Is my mac pro compatible with mountain lion/ 2 x 2.66 Ghz Dual core processors?
Any help would be appreciated. Thanks
William

And FBDIMMs which use to cost $300+ for 8GB can now be had for... 2 x $34.
I paid $300 2 x 512MB August 2006,, then 2 x 1GB $400 March '07
So as long as you only need 16GB you are safe, it is when you need 4GB, or the rare 8GB FBDIMM and 32GB or more, that yes, time to part ways and get a system that supports cheaper DDR3.
Except, right now, 10.8.2 'broke' support for more than 64GB and there were people depending on and using 96GB. Or that more than 48GB also 'broke' the Apple Pro RAID card; a card that still does not support 3TB drives. 10.8.2 does though provide support for more current Nvidia cards (10.7.4 also showed support just not for GTX 6xx series). 3rd party graphic support has always been a weakness, until now.
Apple Mac Pro is a workstation. Except when it is not. It is still not clear how they missed these things.
What 32-bit EFI won't get you is 64-bit kernel mode and abilty to fully use more powerful graphic cards or memory addresses for a single process beyond 4GB or graphic card support with more than 2GB (and 2GB use to always fail in OS X in the past).

Mac Pro/Intel with Logic 8, HD Accel Hardware, Expansion Chassis - Anyone?

Hi,
I'm wondering if anyone out there is running a Mac Pro/Intel with Logic 8 and an HD Accel system with an expansion chassis. Apple does not support running Logic with HD hardware with an expansion chassis. However, we have been running one successfully (sort of) with Logic 8 on a G5. Unfortunately, the chassis we have doesn't provide the bandwidth that we need to get the track counts that we are looking for, so we are considering upgrading to a Mac Pro with either the Magma PE6R4 chassis or the Magma 64 bit 7 slot chassis. Anyone tried either of these configurations?
Thanks,
Ken Lewis
www.logicmixing.com

Hi,
I am running Logic Studio 8 on my Mac Pro 4-core 2.66 (specs below) using internal HDs only and it runs like a charm.
No overload message yet and it seems to me that I have to do feed it a lot more than I do right now to even come close to an overload message.
So with a 2.8 8-core you are well in line and should have quite some reserves.
My personal opinion is, if you can afford the money for the Mac Pro, go for it.
Have Fun
Stefan

Will a samsung s5 sync contacts on a mac pro 150 with outlook 2011 installed?

Im looking at a new Samsung S5 smart phone (had it with the iphone) & I have a mac pro 150 with Office 2011 installed;
Question - will the S5 sync contacts in Outlook program installed?

Microsoft have not made Outlook for Mac compatible with iCloud since they haven't bothered to include support for the industry standard CalDAV and CardDAV protocols iCloud uses.
See: http://support.microsoft.com/kb/2648915
Apple cannot do anything to rectify this, as they don't make Microsoft Office. It is in Microsoft's hands.
It wasn't necessary to buy Office for Mac to sync with iCloud. All Macs come with all the applications required for syncing with iCloud for free.
Use Apple's Mail, Address Book and iCal.

OS X 10.6.7 (Mac Pro) issues with Sleep

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