Macbook pro screen dims after waking from sleep?

Does anyone know why my macbook pro screen dims when waking from sleep or waking from my screen saver? I can't get it to stop doing this. Thanks.

It sounds like I have the same thing happening. It's more like the colors are washed out, like there is less contrast. I have a hot corner set up for my screen saver. Once I activate the screen saver for a second and then deactivate it, the Macbook screen goes back to normal. I have a 30" Samsung 305T monitor set up as a second (main) screen for when I'm working at home, which is most of the time. I haven't had it unplugged from the Macbook since this started, so I don't know if it happens by itself. I do know that the Samsung looks fine when waking up from the screen saver at the same time.
I tried to find others with this problem in this forum, but got tired of looking through all the other posts that had nothing to do with this problem.
Can anyone help us?

Similar Messages

Macbook pro 2010 crashes after waking from sleep

Hi,
I upgraded to mountain lion a month or so ago and ever since my MBP often crashes after waking from sleep. I've included the error report below. Any help would be appreciated. After it restarts, it works fine. Problem consistently happens after waking from sleep.
Thank-you
Interval Since Last Panic Report: 55755 sec
Panics Since Last Report:          1
Anonymous UUID:                    D0E51DBB-BAAC-864E-AF93-8DAF5E934CE9
Sun Dec 2 08:24:22 2012
panic(cpu 0 caller 0xffffff7f8aabdb25): NVRM[0/1:0:0]: Read Error 0x00000100: CFG 0xffffffff 0xffffffff 0xffffffff, BAR0 0xd2000000 0xffffff811e05d000 0x0a5480a2, D0, P2/4
Backtrace (CPU 0), Frame : Return Address
0xffffff80fa7bb420 : 0xffffff800a21d626
0xffffff80fa7bb490 : 0xffffff7f8aabdb25
0xffffff80fa7bb520 : 0xffffff7f8abb74b3
0xffffff80fa7bb580 : 0xffffff7f8abb7527
0xffffff80fa7bb5f0 : 0xffffff7f8aecc853
0xffffff80fa7bb730 : 0xffffff7f8abdd659
0xffffff80fa7bb760 : 0xffffff7f8aac78da
0xffffff80fa7bb810 : 0xffffff7f8aac2fac
0xffffff80fa7bba00 : 0xffffff7f8aac43a2
0xffffff80fa7bbad0 : 0xffffff7f8acb815a
0xffffff80fa7bbb00 : 0xffffff7f8ac9be1a
0xffffff80fa7bbb30 : 0xffffff7f8ac9b241
0xffffff80fa7bbba0 : 0xffffff7f8ac9b362
0xffffff80fa7bbc20 : 0xffffff7f8aca687d
0xffffff80fa7bbc50 : 0xffffff7f8acae61c
0xffffff80fa7bbdd0 : 0xffffff7f8aa5a3c7
0xffffff80fa7bbe40 : 0xffffff7f8aa4457b
0xffffff80fa7bbeb0 : 0xffffff7f8aa46c04
0xffffff80fa7bbf00 : 0xffffff7f8aa0839f
0xffffff80fa7bbf20 : 0xffffff800a649e4a
0xffffff80fa7bbf60 : 0xffffff800a23dcde
0xffffff80fa7bbfb0 : 0xffffff800a2b26b7
      Kernel Extensions in backtrace:
         com.apple.iokit.IOGraphicsFamily(2.3.5)[803496D0-ADAD-3ADB-B071-8A0A197DA53D]@0 xffffff7f8a9ff000->0xffffff7f8aa36fff
            dependency: com.apple.iokit.IOPCIFamily(2.7.2)[B1B77B26-7984-302F-BA8E-544DD3D75E73]@0xffff ff7f8a829000
         com.apple.iokit.IONDRVSupport(2.3.5)[86DDB71C-A73A-3EBE-AC44-0BC9A38B9A44]@0xff ffff7f8aa42000->0xffffff7f8aa53fff
            dependency: com.apple.iokit.IOGraphicsFamily(2.3.5)[803496D0-ADAD-3ADB-B071-8A0A197DA53D]@0 xffffff7f8a9ff000
            dependency: com.apple.iokit.IOPCIFamily(2.7.2)[B1B77B26-7984-302F-BA8E-544DD3D75E73]@0xffff ff7f8a829000
         com.apple.NVDAResman(8.0)[A4C53A36-22B6-3075-82B9-9DE612A9C015]@0xffffff7f8aa56 000->0xffffff7f8ad58fff
            dependency: com.apple.iokit.IOPCIFamily(2.7.2)[B1B77B26-7984-302F-BA8E-544DD3D75E73]@0xffff ff7f8a829000
            dependency: com.apple.iokit.IONDRVSupport(2.3.5)[86DDB71C-A73A-3EBE-AC44-0BC9A38B9A44]@0xff ffff7f8aa42000
            dependency: com.apple.iokit.IOGraphicsFamily(2.3.5)[803496D0-ADAD-3ADB-B071-8A0A197DA53D]@0 xffffff7f8a9ff000
         com.apple.nvidia.nv50hal(8.0)[9F3D09B5-3158-3D9E-BDA3-E71576AAD3B7]@0xffffff7f8 ad66000->0xffffff7f8b088fff
            dependency: com.apple.NVDAResman(8.0.0)[A4C53A36-22B6-3075-82B9-9DE612A9C015]@0xffffff7f8aa 56000
            dependency: com.apple.iokit.IOPCIFamily(2.7.2)[B1B77B26-7984-302F-BA8E-544DD3D75E73]@0xffff ff7f8a829000
BSD process name corresponding to current thread: kernel_task
Mac OS version:
12C60
Kernel version:
Darwin Kernel Version 12.2.0: Sat Aug 25 00:48:52 PDT 2012; root:xnu-2050.18.24~1/RELEASE_X86_64
Kernel UUID: 69A5853F-375A-3EF4-9247-478FD0247333
Kernel slide:     0x000000000a000000
Kernel text base: 0xffffff800a200000
System model name: MacBookPro6,2 (Mac-F22586C8)
System uptime in nanoseconds: 50092647901403
last loaded kext at 48562451601465: com.apple.driver.AppleUSBCDC    4.1.22 (addr 0xffffff7f8c5c0000, size 16384)
last unloaded kext at 48645674911297: com.apple.driver.AppleUSBCDC    4.1.22 (addr 0xffffff7f8c5c0000, size 12288)
loaded kexts:
com.razer.orochi.driver    2.0
com.rim.driver.BlackBerryUSBDriverInt    0.0.74
com.apple.driver.AppleHWSensor    1.9.5d0
com.apple.driver.AudioAUUC    1.60
com.apple.driver.AGPM    100.12.69
com.apple.driver.AppleHDA    2.3.1f2
com.apple.GeForce    8.0.0
com.apple.iokit.IOUserEthernet    1.0.0d1
com.apple.iokit.IOBluetoothSerialManager    4.0.9f33
com.apple.Dont_Steal_Mac_OS_X    7.0.0
com.apple.driver.ApplePolicyControl    3.2.11
com.apple.driver.ACPI_SMC_PlatformPlugin    1.0.0
com.apple.driver.AppleUpstreamUserClient    3.5.10
com.apple.driver.AppleIntelHDGraphics    8.0.0
com.apple.driver.AppleIntelHDGraphicsFB    8.0.0
com.apple.driver.AppleMikeyHIDDriver    122
com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport    4.0.9f33
com.apple.driver.AppleSMCPDRC    1.0.0
com.apple.driver.AppleSMCLMU    2.0.2d0
com.apple.filesystems.autofs    3.0
com.apple.driver.AppleMikeyDriver    2.3.1f2
com.apple.driver.AppleMuxControl    3.2.11
com.apple.driver.AppleMCCSControl    1.0.33
com.apple.driver.AppleLPC    1.6.0
com.apple.driver.SMCMotionSensor    3.0.2d6
com.apple.driver.AppleUSBTCButtons    235.4
com.apple.driver.AppleUSBTCKeyboard    235.4
com.apple.driver.AppleIRController    320.15
com.apple.driver.AppleUSBCardReader    3.1.0
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless    1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib    1.0.0d1
com.apple.BootCache    34
com.apple.iokit.SCSITaskUserClient    3.5.1
com.apple.driver.XsanFilter    404
com.apple.iokit.IOAHCIBlockStorage    2.2.2
com.apple.driver.AppleFWOHCI    4.9.6
com.apple.driver.AppleUSBHub    5.2.5
com.apple.driver.AirPort.Brcm4331    602.15.22
com.apple.driver.AppleAHCIPort    2.4.1
com.apple.iokit.AppleBCM5701Ethernet    3.2.5b3
com.apple.driver.AppleUSBEHCI    5.4.0
com.apple.driver.AppleEFINVRAM    1.6.1
com.apple.driver.AppleSmartBatteryManager    161.0.0
com.apple.driver.AppleACPIButtons    1.6
com.apple.driver.AppleRTC    1.5
com.apple.driver.AppleHPET    1.7
com.apple.driver.AppleSMBIOS    1.9
com.apple.driver.AppleACPIEC    1.6
com.apple.driver.AppleAPIC    1.6
com.apple.driver.AppleIntelCPUPowerManagementClient    196.0.0
com.apple.nke.applicationfirewall    4.0.39
com.apple.security.quarantine    2
com.apple.driver.AppleIntelCPUPowerManagement    196.0.0
com.apple.driver.AppleBluetoothHIDKeyboard    165.5
com.apple.driver.IOBluetoothHIDDriver    4.0.9f33
com.apple.driver.AppleHIDKeyboard    165.5
com.apple.driver.DspFuncLib    2.3.1f2
com.apple.iokit.IOAudioFamily    1.8.9fc10
com.apple.kext.OSvKernDSPLib    1.6
com.apple.nvidia.nv50hal    8.0.0
com.apple.NVDAResman    8.0.0
com.apple.iokit.IOSurface    86.0.3
com.apple.iokit.IOSerialFamily    10.0.6
com.apple.iokit.IOBluetoothFamily    4.0.9f33
com.apple.driver.IOPlatformPluginLegacy    1.0.0
com.apple.iokit.IOFireWireIP    2.2.5
com.apple.iokit.AppleBluetoothHCIControllerUSBTransport    4.0.9f33
com.apple.kext.triggers    1.0
com.apple.driver.AppleSMBusPCI    1.0.10d0
com.apple.driver.AppleGraphicsControl    3.2.11
com.apple.driver.AppleBacklightExpert    1.0.4
com.apple.iokit.IONDRVSupport    2.3.5
com.apple.driver.AppleSMBusController    1.0.10d0
com.apple.driver.AppleHDAController    2.3.1f2
com.apple.iokit.IOGraphicsFamily    2.3.5
com.apple.iokit.IOHDAFamily    2.3.1f2
com.apple.driver.IOPlatformPluginFamily    5.2.0d16
com.apple.driver.AppleSMC    3.1.4d2
com.apple.driver.AppleUSBMultitouch    235.7
com.apple.iokit.IOUSBHIDDriver    5.2.5
com.apple.driver.AppleUSBMergeNub    5.2.5
com.apple.iokit.IOSCSIMultimediaCommandsDevice    3.5.1
com.apple.iokit.IOBDStorageFamily    1.7
com.apple.iokit.IODVDStorageFamily    1.7.1
com.apple.iokit.IOCDStorageFamily    1.7.1
com.apple.iokit.IOAHCISerialATAPI    2.5.0
com.apple.iokit.IOFireWireFamily    4.5.5
com.apple.iokit.IO80211Family    500.15
com.apple.iokit.IOUSBUserClient    5.2.5
com.apple.iokit.IOAHCIFamily    2.2.1
com.apple.iokit.IOEthernetAVBController    1.0.2b1
com.apple.iokit.IONetworkingFamily    3.0
com.apple.driver.AppleEFIRuntime    1.6.1
com.apple.iokit.IOHIDFamily    1.8.0
com.apple.iokit.IOSMBusFamily    1.1
com.apple.security.sandbox    220
com.apple.kext.AppleMatch    1.0.0d1
com.apple.security.TMSafetyNet    7
com.apple.driver.DiskImages    344
com.apple.driver.AppleKeyStore    28.21
com.apple.iokit.IOUSBMassStorageClass    3.5.0
com.apple.driver.AppleUSBComposite    5.2.5
com.apple.iokit.IOSCSIBlockCommandsDevice    3.5.1
com.apple.iokit.IOStorageFamily    1.8
com.apple.iokit.IOSCSIArchitectureModelFamily    3.5.1
com.apple.iokit.IOUSBFamily    5.4.0
com.apple.driver.AppleACPIPlatform    1.6
com.apple.iokit.IOPCIFamily    2.7.2
com.apple.iokit.IOACPIFamily    1.4
com.apple.kec.corecrypto    1.0
Model: MacBookPro6,2, BootROM MBP61.0057.B0F, 2 processors, Intel Core i7, 2.66 GHz, 8 GB, SMC 1.58f16
Graphics: Intel HD Graphics, Intel HD Graphics, Built-In, 288 MB
Graphics: NVIDIA GeForce GT 330M, NVIDIA GeForce GT 330M, PCIe, 512 MB
Memory Module: BANK 0/DIMM0, 4 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353237334348302D4346382020
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1067 MHz, 0x80CE, 0x4D34373142353237334348302D4346382020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x93), Broadcom BCM43xx 1.0 (5.106.98.81.22)
Bluetooth: Version 4.0.9f33 10885, 2 service, 18 devices, 1 incoming serial ports
Network Service: AirPort, AirPort, en1
Serial ATA Device: ST9500420ASG, 500.11 GB
Serial ATA Device: MATSHITADVD-R   UJ-898
USB Device: hub_device, 0x0424 (SMSC), 0x2514, 0xfa100000 / 2
USB Device: Razer Orochi, 0x1532, 0x0013, 0xfa140000 / 6
USB Device: Internal Memory Card Reader, apple_vendor_id, 0x8403, 0xfa130000 / 5
USB Device: BRCM2070 Hub, 0x0a5c (Broadcom Corp.), 0x4500, 0xfa110000 / 4
USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x8218, 0xfa113000 / 9
USB Device: Apple Internal Keyboard / Trackpad, apple_vendor_id, 0x0236, 0xfa120000 / 3
USB Device: hub_device, 0x0424 (SMSC), 0x2514, 0xfd100000 / 2
USB Device: IR Receiver, apple_vendor_id, 0x8242, 0xfd120000 / 4
USB Device: Built-in iSight, apple_vendor_id, 0x8507, 0xfd110000 / 3

Back up all data, then uninstall the Razer and Blackberry software according to the developers' instructions. Reboot and test. Most likely there will be no change. In that case, see below:
MacBook Pro (15-inch, Mid 2010): Intermittent black screen or loss of video

Logic Pro X inaccessible after waking from sleep when using an MCU Control Surface

I'm having a problem I cannot seem to get around without force quitting Logic every time. If I have a Control Surface setup as a Mackie Control (v1.0); and if the computer goes to sleep, and then i turn off the controller while the computer is asleep (for any reason), and then wake the computer without turning on the controller first, Logic becomes completely unusable and must be force quit.
My controller in this example is Solid State Logic's Nucleus controller, however it happens with other Mackie Control compatible controllers (i have another one i tested against), BUT not a real Mackie Controller sold by Mackie (i tested with that as well); more details below.
For the SSL controller, Logic automatically sets it up like this:
Now if the computer goes to sleep, and i wake it up, i get the following dialog, which is fine:
After clicking on "Continue" button or hitting the enter key, Logic is rendered useless, as if there is a modal dialog still open somewhere. Clicking anywhere on the gui results in white flashes and nothing else. doing cmd+Q to quit actually makes it try to quit (a save dialog appears), but it never does successfully quit, making me resort to force-quitting. For an example, here's a pic of the file menu at this point:
I also have a regular Mackie Control Unit (MCU Pro) and the strange thing is with that unit, everything works fine after sleep, turning off controller, and re-awakening. However, there is a difference in what kind of dialog is displayed after the sleep, which probably has something to do with this issue.
Here is the setup screen of the MCU Pro:
And here is the dialog for the missing ports after waking from sleep:
This dialog is completely different than the other control surface's missing ports dialog. When clicking on "Keep unassigned" here, Logic resumes working fine.
The project is as minimal as possible; nothing is loaded, all that's there is an empty instrument track and a Control Surface configured.
I'm using a Mac Mini (late 2012)
Processor 2,6 GHz Intel Core i7
Memory 16 GB 1600 MHz DDR3
Graphics Intel HD Graphics 4000
Software OS X 10.9.4 (13E28)
with Logic Pro X 10.0.7
Any help would be greatly appreciated!!

Did you ever figure out a solution to this problem?
I just pulled out my original Emagic Logic Control (MIDI) and I have having the same problem.

Macbook Pro Retina 2013 not waking from sleep

Hi all,
My brand new 15" Retina Macbook Pro (late 2013) is not waking from sleep. It doesn't occur after a short sleep (as I can wake it as normal by moving my mouse), but if the sleep is for some extended duration (not exactly sure, but at least within a couple of hours) then the only way to wake it is to use the power button.
I've tried an SMC reset to no avail -- the problem still occurs.
It's plugged into a power adapter and this is a screenshot of the settings page.
This is a very annoying issue. I'm hoping someone can help?
Thanks!
Adam

I managed to narrow down and reproduce the issue:
It occurs when the 'turn display off after' time lapses. Eg, if I change the setting to 1 minute and wait for the display to turn off, the computer will *not* wake up without pressing the power button.
Very strange. Hoping someone can provide some insight!
Thanks,
Adam

Dark screen remains after waking from sleep mode

Whilst using Safari Version 3.1.2, Mac OS 10.4.11 on my Powerbook G4 (aluminum, 1.5 ghz), my screen remains dark upon waking from sleep mode. Trying to increase screen brightness is ineffectual for some reason likely related to this problem. My only workaround is to force shutdown and restart. Any ideas about a solution would be greatly appreciated.

Hi Gary,
This behavior is not a Safari issue but system related.
Close all applications an run in utilities> disc repair permissions.
After you done reboot an see what happens when your Mac gets to sleep mode again. This time don't open any applications to test it. Just leave it showing your desktop.
Post back with the results ...
Dimaxum

2008 Mac Pro restarting itself after waking from sleep

Recently, my Mac Pro has taken to restarting itself unasked upon waking from sleep. I just moved to a town with a hot summer, and my room has no air conditioning and gets quite warm. Could the temperature in the room be causing this? I don't think so, because it happens in the cool of the morning after an all night sleep, too.
Another factor I just discovered is that one of my RAM chips has stopped showing up in the system profiler.

Replace the pair of DIMMs first.
Monitor the temps inside.
Install and use SmcFanControl 2.2
Run Apple Hardware Test
You may want to try a clean system install to test with once you have the RAM replaced. Faulty RAM can cause all kinds of issues. And dirty files. Some deeper check for corrupt files than Disk Utility is probably in order.
There is a significant "Inrush-current" on boot and wake from sleep with the 2008s. They need good power, a 1500VA/900W UPS, and sensitive to other equipment on the same circuit.
Inrush current

Mac Pro fans revving after waking from sleep....

Anyone else experience this? Seemed to start after I installed the latest firmware update. After wakign from sleep, my Mac Pro's fans start to rev, but they eventually die down.

Happens all the time. Check out the long thread on "SMC Firmware" for the issues and problems some ran into.

13" MBA screen blank after waking from sleep

I got a MBA very recently and noticed that if I shut the top and soon reopen it, the screen is totally blank except for the cursor. Clicking and pressing keyboard buttons doesn't help bring me to the login screen. Eventually the screen goes black and then goes to login if I click or press a button. I already took it to the store and after close to 4 hours (they were extremely behind....5th ave store from 1230 -4 am!!) and resetting the laptop I was told to call apple care. I called and after a while he told me I have to send it in for repair. Does any one else experience this blank screen with a cursor after waking?
Ps some want to blame chrome. My feeling was that if there's no known issue with chrome currently, there's no reason I should refrain from using it.

This happens every so often to my 12" Aluminium PowerBook after sleeping (black screen, hard drive spinning away) and after trying every possible key combination and nothing helping, I'm usually left with the usual last resort, which is a hard restart. Of course that remedies the problem short term but unfortunately, only until the next time it happens. For me, it has been an issue since I bought it and is not affected by the OS.
I am wondering if it has anything to do with the clasp not working properly when the lid is closed. Sometimes I get the sleeping light, sometimes not - unless I play with the lid until it clicks shut. Then the light appears. Importantly, when the sleeping light appears, the machine always wakes properly with the lid opening. But I have noticed that when the light does not come on and I haven't bothered to shut it down properly, that is when the problem occurs. Which makes me wonder if rather than going into sleep mode it is actually going into hibernation mode due to non use? I haven't a clue but perhaps someone here knows far more about such things than myself?

New Macbook Air - display issues after waking from sleep

I have a 1 day old Macbook Air 13" (2013) --- when I wake the machine from sleep, the display shows horizontal / vertical bands for a couple of seconds before clearing up to show the desktop. Please see attached picture. This doesn't happen 100% of the time but I've been able to repeatedly replicate this at intervals. Does this seem like a hardware problem or an OS related issue? Thanks.

Joan Amat wrote:
Brand new Macbook Air 2013
Display driver fault from wakeup, or external disconnect occurrence.
reset SMC and re verify
SMC reset
Shut down the computer.
Plug in the MagSafe power adapter to a power source, connecting it to the Mac if its not already connected.
On the built-in keyboard, press the (left side) Shift-Control-Option keys and the power button at the same time.
Release all the keys and the power button at the same time.
Press the power button to turn on the computer.
Note: The LED on the MagSafe power adapter may change states or temporarily turn off when you reset the SMC.
Since you just bought it, contact Apple about making an exchange within 14 days or repair after 2 week period.
peace.

Screen Black after waking from sleep mode (after 10.4.11 update)

This issue has happened before with an earlier update (10.3.8 Delta fixed the issue originally), and I suspect it is the same with this current update.
Has anyone else had this problem with the new update and has there been a patch released to fix the problem yet? Hopefully we can get an update soon.

This happens every so often to my 12" Aluminium PowerBook after sleeping (black screen, hard drive spinning away) and after trying every possible key combination and nothing helping, I'm usually left with the usual last resort, which is a hard restart. Of course that remedies the problem short term but unfortunately, only until the next time it happens. For me, it has been an issue since I bought it and is not affected by the OS.
I am wondering if it has anything to do with the clasp not working properly when the lid is closed. Sometimes I get the sleeping light, sometimes not - unless I play with the lid until it clicks shut. Then the light appears. Importantly, when the sleeping light appears, the machine always wakes properly with the lid opening. But I have noticed that when the light does not come on and I haven't bothered to shut it down properly, that is when the problem occurs. Which makes me wonder if rather than going into sleep mode it is actually going into hibernation mode due to non use? I haven't a clue but perhaps someone here knows far more about such things than myself?

My MacBook Pro won't reconnect to my Wi-FI automatically after waking from sleep mode

Hello, everyone. Since I updated to Yosemite, my MacBook Pro won't reconnect to my Wi-FI automatically after waking from sleep mode.
Does anyone know how to fix that?
Thanks in advance,
Arthur.

Hi, arthurpacifico.
Thank you for visiting Apple Support Communities.
Here are a couple troubleshooting steps that I would recommend trying to see if it corrects this issue.
Intel-based Macs: Resetting the System Management Controller (SMC)
http://support.apple.com/kb/HT3964
Reset your computer’s PRAM
http://support.apple.com/kb/HT1379
If the issue persists, try the troubleshooting steps I have attached below.
Symptom: After restarting or waking from sleep, my computer might not connect to the Internet
After waking from sleep or starting up, your computer may not show that it is connected to a Wi-Fi network.
After start or wake, your computer may indicate that it is connected to a network, but does not connect to the Internet.
Solution
Use these steps if your computer does not automatically connect to your desired Wi-Fi network.
Check your TCP/IP settings in the Network pane of the System Preferences. Click the "Renew DHCP lease" button
Choose System Preferences from the Apple menu.
Choose Network from the View menu.
Select Wi-Fi, then click the Advanced button in the lower-left hand corner of the screen.
Click the TCP/IP tab from the top of the screen.
Click the "Renew DHCP lease" button.
Select the Wi-Fi tab and view your Preferred Networks list.
Select each network and click the minus sign to remove those networks from your Preferred Networks list.
Click OK and close the Network preferences.
Remove your stored network passwords using the Keychain Access Utility.Restart your computer.
Open Keychain Access from /Applications/Utilities. Your window will look like this:
Remove your AirPort network passwords from the login keychain: Select the "login" keychain from the Keychain sidebar. Click the "Kind" column to order the list of keychain items by their type. Remove all entries of the kind: "AirPort network password".
Remove your AirPort network passwords from the System keychain: Select the "System" keychain from the Keychain sidebar. Click the "Kind" column to order the list of keychain items by their type. Remove all entries of the kind: "AirPort network password".
Note: The above steps will remove your Wi-Fi network passwords. If you do not know them, or if your network does not use passwords to restrict access, you should contact your network administrator.
Join your Wi-Fi network. You will need to enter your password for your network again if it requires one.
Wi-Fi: How to troubleshoot Wi-Fi connectivity
http://support.apple.com/kb/ht4628
Cheers,
Jason H.

Macbook Pro restart after waking from sleep

Hi all,
Since I've installed Mountain Lion (10.8.2) on my 13" Late 2011 Macbook Pro I've been experiencing a quite annoying problem. The computer, which is connected to an external monitor through Thunderbolt to HDMI will restart (Sometimes to a gray screen with a progress bar) after waking from sleep. I've done some research and it would appear as though the problem is related to the display driver.
I'm wondering if anyone has any experience with this peculiar problem or if there's a quick solution.
Thanks!

Maybe this will help. If you monitor the "More Like This" box, other solved threads appear. Opening them usually displays other threads.
https://discussions.apple.com/message/19675376#19675376

My macbook pro (lion 10.7.2) takes several minutes to connect to the internet after waking from sleep. Is there any way to make this instant?

Hi
My Macbook Pro 15 inch takes several minutes to be able to connect to the internet after waking from sleep. Does anyone else have this problem and is there a fix?
Alan

coxorangepippin wrote:
The message that comes up when I click on "TomTom Home Install" is "You cannot open Home Install because Power PC applications are no longer supported." Does this mean that the TomTom, which is absolutely vital to my life - well, not literally but you know what I mean - can no longer be used with my MacBook Pro?
What that means is that is can't be used with Lion 10.7. PowerPC was the chip Apple used up until 2006 when they switched to Intel. At that point, they created the Rosetta emulator to allow for PPC support for 5 years. They finally dropped the support with the release of Lion. It will only work with OS X 10.6 or earlier. The other option is to purchase a new GPS, which can be had for $100 for a decent one.

Macbook Retina with Mountain Lion issues after waking from sleep.

Macbook Retina with Mountain Lion has the spinning beach ball of death after waking from sleep a few times. Anyone else seeing this? A fresh boot is very quick, but waking from sleep lags at times. Then after a few times the spinning beachball of death appears and nothing is responsive making me reboot the machine.

I've been suffering from this too, and am currently trying this:
http://www.ewal.net/2012/09/09/slow-wake-for-macbook-pro-retina/
Seems to be tied to this 'Power Nap' feature. I tuned it for 12 hours instead of 24.

Black screen after waking from sleep mode - Compaq Presario CQ5110F

My mother's computer has been having the problem listed in the subject -- after waking from sleep mode, the monitor just stays black, and won't come back. After trying everything I could find online, I eventually found the bios update which claims to fix the exact issue. The problem is that I guess my mother had opted to upgrade to Windows 7, while the bios update seems to only work for Windows Vista, as I get the following error message: "Your system does not meet the minimum requirements for this update. Update has been canceleld. (9998)." I've tried running the update in Vista compatibility mode, with no luck. I've tried using a different monitor, I've updated all the drivers, Windows Updates are all current, I've cleared CMOS. Any idea on how to fix this? It's very recent; only for about the past 2 weeks has this been happening, while we've had the computer for over 3 years. It's quite a waste of energy to keep it on all day.

Hello liltwix,
When taking your computer out of safe mode the screen just remains black, is that correct? I will try to help you with this issue.
I understand you upgraded from Vista to 7, was that when the issue started or has the computer had windows 7 installed for some time before this problem started?
Please respond back at your earliest convenience.
Thanks
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Clicking the 'Accept as Solution' button is a way to let others know which steps helped solve the problem!

Macbook pro screen dims after waking from sleep?

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