Monitor is flickering after upgrading to Mavericks

Hi eveyone,
As many of you already did, today I've upgraded my MacBook Pro i5 2.5 GHz/8GB RAM from Mountain Lion (10.8.5) to Mavericks (10.9).
Unfortunately, I'm experiencing serious and unpleasant issues since I installed the upgrade.
Specifically, my monitor flickers almost every time I scroll an application window (e.g., Safari) either using an USB mouse or the trackpad.
Moreover, when I pass the mouse over the Dock, this starts vibrating from time to time.
The same happens also to the external monitor I usually connect to my laptop via the MiniDisplay to VGA cable. The external monitor is an LCD Samsung SyncMaster B1940MR.
After several reboots and given that one of the new features of Mavericks is the new management of external monitors, I've tried to re-install from scratch the OS X upgrade without connecting my laptop to the external LCD but still nothing has changed.
I'm really annoyed by having both monitors flickering. Another particular thing is that if I try to click on the Finder menu appearing on the external monitor, this makes flicker the primary monitor approximately at the same coordinates (i.e., at the Finder menu of the laptop monitor).
It seems like something is going wrong with the video card drivers but this is just my conjecture.
Are you guys experiencing the same or is there anything you might want to suggest to solve these issues?
Thank you in advance

Iv upgraded to maverick and not at all happy... first off my thunderbolt does not work any more....
And now the apple monitor im using with my laptop (macbook pro I7 2.2ghz / 8gb ram / AMD Radeon HD 6750M 512 MB) via mini dvi flash's to a black screen every now and then...
Im not sure about the monitor flickers you guys are getting? Im literally getting the monitor display a black screen as if the apple screen is switching off and on again because of loss of signal?
Really anoying when trying to right code and design!
APPLE FIX THIS PLEASE! before i download adobe suite for my windows 8 partition!! and yes i just said that! >_<

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Use the software update, look for the new app in your Applications folder along side your old versions of iPhoto. Drag the new icon down to the Dock.
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https://discussions.apple.com/docs/DOC-6161

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I've got a Thunderbolt Display that I use with my Macbook Air (mid 2012) - usually in clamshell mode.
When I let the computer go to sleep, and then wake it up by clicking the mouse, the monitor turns back on but the colors are washed out and purple looking.
The display goes back to normal when I unplug and replug it to my laptop.
I first noticed this problem after upgrading to Mavericks.
I made a video demonstrating the issue here:
http://www.youtube.com/watch?v=19179-MVpWA&feature=youtu.be
Any ideas?
Thanks!
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Same thing for me too. Late 2012 13" MBP Retina. I have to unplug the Thunderbolt cable and plug it back in.
This has only started for me in the last two days. The first two weeks of Mavericks was ok.
Update: I just got back from a trip. I was using the laptop separate from the Thunderbolt display. I hadn't restarted since I returned and connected the monitor. I've just rebooted, and put the computer to sleep. After resuming from sleep, the display is ok. Maybe try rebooting? I'll update if it continues.

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After upgrading to Maverick I am experiencing massive performace problems to the point of the system not being usable.
System: 2010 iMac
Upgraded Yesterday morning, Upgrade process went smooth, no issues at first. First symptoms of problems were hick-ups in video playback, jerks in window switching. From then on over several hours the system became slower and slower to the point of being unusable. Performed system reboot, which took 45min, followed by fast degradation and unusability.
Attempted revovery actions with help from Apple support (thanks, even though the problem remains so far):
Booted system via the network into recovery mode, performed disk check: SMART status OK, verified and repaired disk no issues deteced, verified partition, no issues detected, data volume looks correct.
Attempted normal boot-up, unsucceful
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Performed safe boot (shift), system came back up after 1.5 hours, extremely unresponsive, but at least it is up. I am scared to try to shut it down.
Diagnosis attempts: Other than time-outs, no unusual errors in console, file hirachy and files look Ok from terminal, access very slow. Can't see any obviously problematic processes in Activity Monitor, RAM usage about 2.5GBytes out of 12GBytes total, largest is kernel with 700MB, CPU not loaded, no high disk or network io. Evything looks to me like a pefectly normal system that runs at 1/100th or so speed.
Maverick managed to perform a time machine back-up over night and all earlier back-up are gone. So no chance to restore back to Mountain Lion that way.
Anybody with similar problems, any ideas for next steps?
Thanks

Here is the output, while booted into safe:
Video Information:
          ATI Radeon HD 5750 - VRAM: 1024 MB
Audio Plug-ins:
          BluetoothAudioPlugIn: Version: 1.0
          AirPlay: Version: 1.9
          AppleAVBAudio: Version: 2.0.0
          iSightAudio: Version: 7.7.3
System Software:
          OS X 10.9 (13A603) - Uptime: 0 days 2:47:0
Disk Information:
          WDC WD1001FALS-40Y6A0 disk0 : (1 TB)
                    EFI (disk0s1) <not mounted>: 209.7 MB
                    Macintosh HD (disk0s2) /: 750.37 GB (191.86 GB free)
                    Recovery HD (disk0s3) <not mounted>: 650 MB
                    BOOTCAMP (disk0s4) <not mounted>: 245.63 GB
          HL-DT-STDVDRW GA32N
USB Information:
          Apple Computer, Inc. IR Receiver
          Apple Inc. Built-in iSight
          Apple Inc. BRCM2046 Hub
                    Apple Inc. Bluetooth USB Host Controller
          Apple Internal Memory Card Reader
FireWire Information:
Thunderbolt Information:
Kernel Extensions:
Problem System Launch Daemons:
          [failed] com.apple.ucupdate.plist
Problem System Launch Agents:
Launch Daemons:
          [not loaded] com.adobe.fpsaud.plist
          [not loaded] com.adobe.SwitchBoard.plist
          [not loaded] com.google.keystone.daemon.plist
          [not loaded] com.microsoft.office.licensing.helper.plist
Launch Agents:
          [not loaded] com.adobe.AAM.Updater-1.0.plist
          [not loaded] com.adobe.CS5ServiceManager.plist
          [not loaded] com.google.keystone.agent.plist
          [not loaded] SBA_ListenerAgent.plist
User Launch Agents:
          [not loaded] com.adobe.AAM.Updater-1.0.plist
          [not loaded] com.valvesoftware.steamclean.plist
User Login Items:
          None
Internet Plug-ins:
          AdobePDFViewer.plugin
          ContentUploaderPlugin.plugin
          Default Browser.plugin
          DivXBrowserPlugin.plugin
          Flash Player.plugin
          FlashPlayer-10.6.plugin
          googletalkbrowserplugin.plugin
          iPhotoPhotocast.plugin
          JavaAppletPlugin.plugin
          Mathematica.plugin
          net.juniper.DSSafariExtensions.plugin
          NP_2020Player_IKEA.plugin
          NPDjVu.plugin
          PrintDialogExt.plugin
          npgtpo3dautoplugin.plugin
          o1dbrowserplugin.plugin
          OfficeLiveBrowserPlugin.plugin
          QuickTime Plugin.plugin
          RealPlayer Plugin.plugin
          SharePointBrowserPlugin.plugin
          Silverlight.plugin
User Internet Plug-ins:
          Google Earth Web Plug-in.plugin
Bad Fonts:
          None
Time Machine:
          Skip System Files: NO
          Mobile backups: OFF
          Auto backup: NO
          Volumes being backed up:
                    Macintosh HD: Disk size: 750.37 GB Disk used: 558.51 GB
          Destinations:
                    Data [Network] (Last used)
                    Total size: 2 TB
                    Total number of backups: 6
                    Oldest backup: 2013-10-31 14:53:35 +0000
                    Last backup: 2013-11-01 14:14:20 +0000
                    Size of backup disk: Adequate
                              Backup size 2 TB > (Disk used 558.51 GB X 3)
Top Processes by CPU:
               3%          Dock
               2%          com.apple.IconServicesAgent
               1%          System Preferences
               1%          WindowServer
               0%          EtreCheck
               0%          coreservicesd
               0%          lsregister
               0%          Finder
               0%          mds
               0%          SystemUIServer
Top Processes by Memory:
          0 B                imagent
          0 B                autofsd
          0 B                networkd_privileged
          0 B                com.apple.imdpersistence.IMDPersistenceAgent
          0 B                com.apple.dock.extra
          0 B                usernoted
          0 B                logind
          0 B                airportd
          0 B                notifyd
          0 B                blued
Virtual Memory Statistics:
          8.72 GB            Free RAM
          1.84 GB            Active RAM
          780 MB             Inactive RAM
          689 MB             Wired RAM
          198 MB             Page-ins
          0 B                Page-outs

After upgrade to Mavericks

after upgrade to Mavericks , I have now two long black strip on my monitor 30 inches , one at the top, and the other one at the buttom,the rest of the display is fine with Mav. desktop screen with menu bar and dock. Before with mountain lion everything was fine. I have 2 display . one apple 20 inche display with no black strip and a 30 inches LG Flatron W3000H with those 2 black strip. I losing i inch tall at the top and same at the buttom.I try to install maverick again ,same problem, try the display panel of course , no luck. help
       Mario

I already try that , my largest resolution on the 30 inc is 2560 by1440.Not working.I mixed up , I actually upgrated from 10.6.8. When I boot from a 10.6.8 partition , I have no problem. But I realize that my 20 display can have 1680 by 1050 max and my 30 2560 by 1600 max. Then if I boot from 10.9 partition I am having the probem with the black strip and my 20 can max at 2560 by1600 and my 30 can max at 2560 by 1440 with the bars. I realize too that I do not have a menu bar on the 20 display, only on my 30. And when I do a safe mode boot 10.9 , the 2 bars are gone and I have a full 30 display.That workstation is a MacPro 2008 with ati HD 4870 512 k . I checked I did not found any updrate for the video cards.
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I have another problem too that I post on the wifi section. Since upgrade to 10.9 on the macpro , the one with the bars , I lost my wifi icon on the menu bar. i went to Network pane and I do no see a wifi section, only ethernet, firewire, and bluetooth and I try to add another choice the dialog do not let me choose from a wifi. I owne a airport extreme 4 gen and when i open airport utility the airport ext is discovered but no wireless.
I work with pictures, with Lightroom 5 which I instal on the Imac 27, no problem. But I am waiting to install anything on the macpro in case I have to reinstall again 10.9 or if a 10.9.1 update could fix the problem.
Anybody with these two problem, the bars and the missing wifi
thanks      Mario

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Monitor is flickering after upgrading to Mavericks

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