Start Up / Wake up issues

I have a refurbished Mac Pro 2.8GHz Quad-Core Intel Xeon .
I have had a problem with it sometimes booting up and the screen either is just black or it is all a grey snow . It will do this sometimes when it comes out of sleep as well . If I have a program running and I leave it on and return after say an hour , and the screen is black and I wake it up it is less likely to restart with any screen problems . I have had one where I got the window telling me to push the start button until it shuts down and then restart it ; which is what I have been doing for every event . After that I got the message about sending a report to Apple , and I did . Any thoughts ? Is it serious ? I have gotten to the point where I am probably going to contact Apple .
Bryan

I did lots of Google/print research for all that I added . The Apogee Duet is sold right on the Apple site as are M-Audio midi controller keyboards . The only other things that I have hooked up are the KRK Rokit 8s and I read reports on many forums about using them with a Mac and no issues , and my monitor from Samsung . The store where I bought it uses the very same monitor model for there Apple shelf display with no issues . I even phoned Apple before I bought this screen .
That just seems crazy that Apple would sell something on their site that is not compatible with their own product .
The screen issue is very intermittent , in fact it has not happened since my first posting of the issue so assuming that my peripherals are not the issue any other guesses or suggestions as to what might cause the screen to behave like I have stated ?
Bryan
Message was edited by: Bry52

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Hi
im expiriencing an wake up issue with my macbook.
Sometimes if i plug in the powersupply during the macbook is closed and I open the mac book afterwards the screen stays black.
Havent tried till now to get in remotly .
Below I have attached parts of the logs.
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extract from the logs:
29.08.12 00:15:10,000 kernel[0]: hibernate image path: /var/vm/sleepimage
29.08.12 00:15:10,000 kernel[0]: AirPort_Brcm43xx::powerChange: System Sleep
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29.08.12 00:15:10,000 kernel[0]: kern_open_file_for_direct_io(0) took 1 ms
29.08.12 00:15:10,000 kernel[0]: Opened file /var/vm/sleepimage, size 17179869184, partition base 0x0, maxio 400000 ssd 1
29.08.12 00:15:10,000 kernel[0]: hibernate image major 1, minor 0, blocksize 512, pollers 4
29.08.12 00:15:10,731 airportd[1329]: _doAutoJoin: Already associated to “nogo”. Bailing on auto-join.
29.08.12 00:15:13,000 kernel[0]: (default pager): [KERNEL]: ps_allocate_cluster - send HI_WAT_ALERT
29.08.12 00:15:13,000 kernel[0]: macx_swapon SUCCESS
29.08.12 00:15:13,000 kernel[0]: (default pager): [KERNEL]: ps_select_segment - send HI_WAT_ALERT
29.08.12 00:15:13,000 kernel[0]: macx_swapon SUCCESS
29.08.12 00:15:15,000 kernel[0]: (default pager): [KERNEL]: ps_select_segment - send HI_WAT_ALERT
29.08.12 00:15:15,000 kernel[0]: macx_swapon SUCCESS
29.08.12 00:15:18,000 kernel[0]: (default pager): [KERNEL]: ps_select_segment - send HI_WAT_ALERT
29.08.12 00:15:18,000 kernel[0]: macx_swapon SUCCESS
29.08.12 00:15:25,000 kernel[0]: (default pager): [KERNEL]: ps_select_segment - send HI_WAT_ALERT
29.08.12 00:15:25,000 kernel[0]: macx_swapon SUCCESS
29.08.12 00:15:38,000 kernel[0]: (default pager): [KERNEL]: ps_select_segment - send HI_WAT_ALERT
29.08.12 00:15:38,000 kernel[0]: macx_swapon SUCCESS
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extract from pmset -g logs
Time stamp
Domain
Message
Duration
Delay
==========
======
=======
========
=====
UUID: 53DAB416-2C72-44AE-B1C3-790A51007C97
28.08.12 23:05:01 MESZ   Sleep
Clamshell Sleep Sleep: Using BATT (Charge:38%)
4207 secs
28.08.12 23:05:01 MESZ   Assertions
PID 85(apsd) Released ApplePushServiceTask "com.apple.apsd-waitingformessages-push.apple.com" 00:36:14 id:0xc00000158 Aggregate:0x40
28.08.12 23:05:02 MESZ   WakeRequests
Clients requested wake events: None
29.08.12 00:15:08 MESZ   DarkWake
DarkWake due to EC.SleepTimer: Using BATT (Charge:38%)
1 secs
29.08.12 00:15:08 MESZ   SlowResponse
PMConnection: Response from com.apple.SoftwareUpdate.UserNotification.PMConnection is slow (powercaps:0x19)
392 ms
29.08.12 00:15:08 MESZ   SlowResponse
PMConnection: Response from com.apple.SoftwareUpdate.UserNotification.PMConnection is slow (powercaps:0x19)
393 ms
29.08.12 00:15:09 MESZ   SlowResponse
PMConnection: Response from PowerStateTracker is slow (powercaps:0x19)
1167 ms
29.08.12 00:15:09 MESZ   Sleep
Maintenance Sleep Sleep: Using BATT (Charge:38%)
29.08.12 00:15:10 MESZ   SlowResponse
PMConnection: Response from AirPort configd plug-in is slow (powercaps:0x0)
1258 ms
29.08.12 00:15:10 MESZ   WakeRequests
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29.08.12 00:15:14 MESZ   Assertions
PID 1333(backupd-helper) Created BackgroundTask "backupd-helper" 00:00:06 id:0xc00000295 Aggregate:0x40
29.08.12 00:15:29 MESZ   Assertions
PID 1333(backupd-helper) Released BackgroundTask "backupd-helper" 00:00:20 id:0xc00000295 Aggregate:0x40
29.08.12 07:01:24 MESZ   Assertions
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Start Up / Wake up issues

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