Power Nap on Macbook Pro Mid 2012?

I just bought a Macbook Pro 13 inch mid 2012 with a SSD. Do you think theres a possible chance it may work? It has an SSD but it isin't Retina.

Yeah I'm frustrated by this limitation myself, but Apple makes the PowerNap feature only work with its SSD devices. This can only be guaranteed on the systems that use its proprietary daughtercards. My guess is that if someone relies on PowerNap and then upgrades their storage with a third-party drive, this would break PowerNap so Apple prevents PowerNap on systems for which this can be done.

Similar Messages

I have a new MacBook Pro Mid 2012 and it goes into deep sleep when I disconnect if from AC power.

I have a new 13" MacBook Pro mid 2012 and it goes into deep sleep when it is disconnected from AC power. I have to press the power button to wake it up. Is this a known issue or is there something wrong with the MacBook Pro?

There are a few threads about this around. Its a known issue for 2012 non retina users, not sure about Apple. It should not work this way and Apple has not put out an update to fix it yet. Check out these threads for some workarounds. I think I saw if you reinstall and don't update one of the updates you get normal functionality back. Otherwise there are some terminal changes you can make to make it operate mostly normally. I made some changes in terminal.
https://discussions.apple.com/thread/4512384
https://discussions.apple.com/message/20436126#20436126#20436126

My iPad 3 is not charging on my macbook pro mid-2012. It was working yesterday and it is not working now, and I'm trying to transfer files between them. How do I charge my iPad with my macbook without having to be a completely new computer?

I am trying to transfer files between my ipad 3 and my macbook pro mid-2012 and they will just not connect. I connected them yesterday and it worked fine. And i can not air drop these files into my ipad it has to be done through itunes. And i can not afford to buy a new computer. How do i get these two to connect without having to buy a completely new computer?

Computer USB ports, regardless of the computer maker, have a relatively low power output and thus are not good chargers. They will charge but it takes a long time. You should be charging your iPad from wall power, or a more powerful source like an in-car charger.
Buying another computer will not change that.

Macbook Pro (Mid 2012) Startup Time Increased

Hi everyone,
I have a Macbook Pro (Mid 2012) non-retina model. I have an upgraded SSD (Crucial MX100). The startup time from switching on to the login screen is usually around five seconds but since this morning the time has increased to around 40 seconds. When the power button is pressed, the tone sounds and the screen lights up but it takes quite a while for the apple logo to appear. I haven't added or removed anything or changed any settings since before this happened. There doesn't seem to be any changes to the performance of the computer once it has started up, or the time taken from the password entered for the bar to load (Yosemite).
My hard drive cable once broke and I had it replaced at an Apple store (if that means anything to anyone). If anyone could give me any possible explanations or advise on how I can return the boot up time to the normal time.
Thanks,
Ben

    Select Macintosh HD as the Startup Disk.
“Set the default startup disk”       http://support.apple.com/kb/HT1310
   Reset PRAM.      http://support.apple.com/kb/PH18761?viewlocale=en_US&locale=en_US
   Start up in Safe Mode.   http://support.apple.com/kb/PH18760

MacBook Pro Mid 2012 not starting up after Yosemite Update

I'm using a MacBook Pro mid 2012 model , enrolled into Yosemite Public Beta Program ...
After the official public launch , app store suggested that i rather update from beta 5 to beta 6 , as downloading extra 5 gig of OS data seemed unnecessary for me , I just updated from the app store.
Post the update , after shutting down my MacBook , I tried starting it up after 8 hours , it failed to respond to any of my prompts .
Keyboard not responding
Power Button not responding
Li-Po Battery indicator alone works ,
When plugged MagSafe , it indicates charging .
The Sleep Indicator (in the front - that of hard disk drive ) blinks occasionally.
Later, when i tried powering up with MagSafe , It booted luckily , after some 20 hours of work , i shut the system down ,
Again when i tried booting up , it failed .
The problem persists since 3 days.
I tried booting up in Safe Mode - No result
Tried Verbose Booting up - No result
Cleared NV RAM - No result
Cleared SMC as Apple instructed for Intel Based MacBooks - No result.
Removed Battery and kept aside for a while , After an hour tried powering up , It booted up , Went till Apple Logo , The loading bar was some 45%
Then it started to go down with a black screen ,
It never starts up again.
After regular intervals of removing and installing battery , it starts up to white screen and goes off.
I am really worried and desperate now.
I am not sure whether my HDD is dead or my Battery is dead or my Logic board is dead or my Yosemite Install was not right ?
After hours of online research , nothing seems to be helpful .
People at Apple Care (Premium ReSeller , India) are so irresponsible in attending the issue ,
They say its helpless without even doing some basic troubleshoot.
Where would it have went wrong and What am i supposed to do now ?
PLEASE HELP !!

darkrider92,
I have the same model MacBook Pro as the one that you got from your mom. Were you able to install the 10.6.8 update successfully onto the factory drive? Were you using the factory RAM when you tried to install the 10.6.8 update on the SSD?
Have you checked the Web site of the SSD’s manufacturer, to see if there’s a firmware update available for the SSD?
You can download the 10.6.8 update outside of Software Update from Apple here; in case you need to try to install this update several times, running it from your local disk would be more convenient than waiting for it to download again.

Can Apple replace my macbook pro (mid 2012) retina's battery if I think that the battery health has gone bad/in need of and renewal?

Can Apple replace my macbook pro (mid 2012) retina's battery if I think that the battery health has gone bad/in need of and renewal???
I've had my Macbook for about 11 months now and i use it every day; its gone though about 420 cycles of charging and using the power, and i noticed the battrey preformance has decreased (as expected). The problem isn't sevear yet but it would comfort me knowing that i could replace the battery in the near future
Please contact me or answer the question if you know anything about this!

Exitio\'s Apple wrote:
Can Apple replace my macbook pro (mid 2012) retina's battery if I think that the battery health has gone bad/in need of and renewal???
No only if they think under warranty/AppleCare, but your likely able to pay for a new battery if they have them, which they might not yet since it's such a new machine still.
BTW, I have a Early 2011 17" MBP, 27 months old, charges to 97% and has only 14 cycles.

Heat Sink on MacBook Pro (mid 2012)

I recently acquired a mid-2012 MacBook Pro that is in need of repair. The device was advertised by the seller as needing repair, and I wanted to experiment in repairing such a problem.
The MBP suffered the symptoms of a failed logic board - no power, LEDs don't light up on either the side of the Mac or the MagSafe Adapter. Per the tutorial on Ifixit.com, I took a look inside the laptop and was able to safely remove the logic board. As I examined the heat sink and the thermal paste connecting it to the processor, I found that the paste had completely dried up. In other words, as I completed part 3 of Step 27 ("Carefully remove the heat sink from the processor."), the heat sink could be removed immediately after I unscrewed it from the logic board - no need to use the spudger to loosen the paste. While examining the interior, the battery also seemed to have signs of wear (the screw tab closest to the optical drive appears cracked); no damage/leakage of battery cells detected.
What are my options at this point? Will it be worth it if I try to clean the old paste from the heat sink & processor, then reapply as instructed (on ifixit.com or other reputable DIY repair sites)? Or, because the battery is slightly damaged in addition to the lack of processor-to-heat sink connectivity, would it be easier/better in the long run to make an appointment at my nearest Apple Store for a Genius Bar consultation?
Thanks for any advice & comments!

Re: Heat Sink on MacBook Pro (mid 2012)
created by PlotinusVeritas in MacBook Pro - View the full discussion
This solved my question This helped me
And why again are you worried about re-applying thermal paste to the heat sink to CPU on logic, ...since youve already indicated the logic board is fried....?
I assume you got a new logic and are asking about grabbing some white thermal paste off Ebay.....or?
... or I'm basically seeking the opinions of more experienced members of the Community (such as yourself ) that can verify my attempt to personally fix the device are not worth it, and are better left to Apple's Geniuses.
Actually, I haven't gotten a new logic board yet. More or less, I was taking it apart for inspectional purposes only. I wasn't intending to remove the heat sink, but the thermal paste was already worn out. I am not sure if the logic board is fried, though after examining the whole laptop some more, the previous owner may have tried to do some fixing/upgrading and failed (foam missing, a bracket for the HDD missing also). I was examining the logic board to determine if there have been any liquid damages to the machine - none found, to the best of my knowledge.

Since installing os x mavericks can't shutdown macbook pro(mid 2012) is there a fix?

since installing os x mavericks can't shutdown macbook pro(mid 2012) is there a fix?

I did the SMC reset and that did shut down the computer (did not notice if the power adaptor lite blinked) when pushed power button (after waiting approx. 30sec.) to see if computer would display same message -- it did! Here is report:
Anonymous UUID:       B6EB39B0-68CD-8AF4-830E-48E1B18542FD
Wed Nov 27 12:20:53 2013
panic(cpu 0 caller 0xffffff8029adc19e): Kernel trap at 0xffffff8029a50944, type 14=page fault, registers:
CR0: 0x000000008001003b, CR2: 0x0000000000000008, CR3: 0x000000002c033000, CR4: 0x00000000001606e0
RAX: 0x0000000000000000, RBX: 0xffffff80358b7fd8, RCX: 0x0000000000000000, RDX: 0xffffff802a0cb940
RSP: 0xffffff80a2c63a00, RBP: 0xffffff80a2c63a30, RSI: 0xffffff80358b7000, RDI: 0xffffff802c4a1360
R8: 0xffffff802a0d2b30, R9: 0x0000000000000000, R10: 0xffffff80a2c63990, R11: 0xffffff802a089ce8
R12: 0xffffff80358b7008, R13: 0x0000000000000000, R14: 0xffffff80358b7000, R15: 0xffffff802c4a1360
RFL: 0x0000000000010246, RIP: 0xffffff8029a50944, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x0000000000000008, Error code: 0x0000000000000002, Fault CPU: 0x0
Backtrace (CPU 0), Frame : Return Address
0xffffff80a2c63690 : 0xffffff8029a22f69
0xffffff80a2c63710 : 0xffffff8029adc19e
0xffffff80a2c638e0 : 0xffffff8029af3606
0xffffff80a2c63900 : 0xffffff8029a50944
0xffffff80a2c63a30 : 0xffffff8029a5151a
0xffffff80a2c63b10 : 0xffffff8029e836e6
0xffffff80a2c63b30 : 0xffffff7faa4b7614
0xffffff80a2c63b60 : 0xffffff7faa49f90b
0xffffff80a2c63b80 : 0xffffff8029e4c3d3
0xffffff80a2c63bb0 : 0xffffff8029e4c24d
0xffffff80a2c63bd0 : 0xffffff8029e61e74
0xffffff80a2c63bf0 : 0xffffff8029e90e44
0xffffff80a2c63c70 : 0xffffff8029e90477
0xffffff80a2c63cb0 : 0xffffff8029e9020a
0xffffff80a2c63d10 : 0xffffff8029e917dc
0xffffff80a2c63d20 : 0xffffff7faa44772a
0xffffff80a2c63d40 : 0xffffff7faa7a9b46
0xffffff80a2c63d80 : 0xffffff7faa7a95b6
0xffffff80a2c63de0 : 0xffffff7faa79f980
0xffffff80a2c63e20 : 0xffffff7faa7a23a9
0xffffff80a2c63e70 : 0xffffff8029e9fe19
0xffffff80a2c63f00 : 0xffffff8029e98b6b
0xffffff80a2c63f20 : 0xffffff8029a4a15a
0xffffff80a2c63fb0 : 0xffffff8029ad6aa7
      Kernel Extensions in backtrace:
         com.apple.iokit.IOUSBFamily(650.4.4)[972D3024-AF9C-3E09-A9EC-D9AB2A559B38]@0xff ffff7faa433000->0xffffff7faa491fff
            dependency: com.apple.iokit.IOPCIFamily(2.8)[447B4896-16FF-3616-95A2-1C516B2A1498]@0xffffff 7faa0ba000
         com.apple.driver.AppleUSBHub(650.4.4)[1229941E-4CB9-3F57-B0A6-4A0AD595025D]@0xf fffff7faa79d000->0xffffff7faa7b3fff
            dependency: com.apple.iokit.IOUSBFamily(650.4.4)[972D3024-AF9C-3E09-A9EC-D9AB2A559B38]@0xff ffff7faa433000
         com.Ralink.driver.RT2870USBWirelessDriver(4.2.6)[2F28A586-61E4-9821-20DE-488AC0 641892]@0xffffff7faa49e000->0xffffff7faa535fff
            dependency: com.apple.iokit.IONetworkingFamily(3.2)[1EAD69CB-6AB4-387F-94C4-8FAAFF28354C]@0 xffffff7faa3ff000
            dependency: com.apple.iokit.IOUSBFamily(650.4.4)[972D3024-AF9C-3E09-A9EC-D9AB2A559B38]@0xff ffff7faa433000
BSD process name corresponding to current thread: kernel_task
Mac OS version:
13A603
Kernel version:
Darwin Kernel Version 13.0.0: Thu Sep 19 22:22:27 PDT 2013; root:xnu-2422.1.72~6/RELEASE_X86_64
Kernel UUID: 1D9369E3-D0A5-31B6-8D16-BFFBBB390393
Kernel slide:     0x0000000029800000
Kernel text base: 0xffffff8029a00000
System model name: MacBookPro9,2 (Mac-6F01561E16C75D06)
System uptime in nanoseconds: 82652072793
last loaded kext at 30378600712: com.apple.driver.AudioAUUC          1.60 (addr 0xffffff7fab05c000, size 32768)
loaded kexts:
com.Ralink.driver.RT2870USBWirelessDriver          4.2.6
com.apple.driver.AudioAUUC          1.60
com.apple.driver.AGPM          100.14.11
com.apple.driver.ApplePlatformEnabler          2.0.9d1
com.apple.driver.X86PlatformShim          1.0.0
com.apple.filesystems.autofs          3.0
com.apple.iokit.IOBluetoothSerialManager          4.2.0f6
com.apple.driver.AppleMikeyHIDDriver          124
com.apple.driver.AppleHDAHardwareConfigDriver          2.5.2fc2
com.apple.driver.AppleHDA          2.5.2fc2
com.apple.iokit.IOBluetoothUSBDFU          4.2.0f6
com.apple.iokit.IOUserEthernet          1.0.0d1
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport          4.2.0f6
com.apple.driver.AppleUpstreamUserClient          3.5.13
com.apple.driver.AppleLPC          1.7.0
com.apple.driver.AppleSMCLMU          2.0.4d1
com.apple.Dont_Steal_Mac_OS_X          7.0.0
com.apple.driver.AppleHWAccess          1
com.apple.driver.AppleSMCPDRC          1.0.0
com.apple.driver.AppleThunderboltIP          1.0.10
com.apple.driver.SMCMotionSensor          3.0.4d1
com.apple.driver.AppleMikeyDriver          2.5.2fc2
com.apple.driver.AppleIntelHD4000Graphics          8.1.8
com.apple.driver.AppleIntelFramebufferCapri          8.1.8
com.apple.driver.ACPI_SMC_PlatformPlugin          1.0.0
com.apple.driver.AppleMuxControl          3.4.12
com.apple.driver.AppleBacklight          170.3.5
com.apple.driver.AppleMCCSControl          1.1.12
com.apple.driver.AppleUSBTCButtons          240.2
com.apple.driver.AppleUSBTCKeyEventDriver          240.2
com.apple.driver.AppleUSBTCKeyboard          240.2
com.apple.driver.AppleIRController          325.7
com.apple.driver.AppleFileSystemDriver          3.0.1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless          1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1
com.apple.BootCache          35
com.apple.iokit.SCSITaskUserClient          3.6.0
com.apple.driver.XsanFilter          404
com.apple.iokit.IOAHCIBlockStorage          2.4.0
com.apple.driver.AppleUSBHub          650.4.4
com.apple.driver.AppleSDXC          1.4.0
com.apple.driver.AirPort.Brcm4331          700.20.22
com.apple.driver.AppleFWOHCI          4.9.9
com.apple.iokit.AppleBCM5701Ethernet          3.6.9b9
com.apple.driver.AppleAHCIPort          2.9.5
com.apple.driver.AppleUSBEHCI          650.4.1
com.apple.driver.AppleUSBXHCI          650.4.3
com.apple.driver.AppleSmartBatteryManager          161.0.0
com.apple.driver.AppleRTC          2.0
com.apple.driver.AppleACPIButtons          2.0
com.apple.driver.AppleHPET          1.8
com.apple.driver.AppleSMBIOS          2.0
com.apple.driver.AppleACPIEC          2.0
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.kext.triggers          1.0
com.apple.iokit.IOSerialFamily          10.0.7
com.apple.driver.DspFuncLib          2.5.2fc2
com.apple.vecLib.kext          1.0.0
com.apple.iokit.IOAudioFamily          1.9.4fc11
com.apple.kext.OSvKernDSPLib          1.14
com.apple.iokit.IOBluetoothHostControllerUSBTransport          4.2.0f6
com.apple.iokit.IOBluetoothFamily          4.2.0f6
com.apple.iokit.IOFireWireIP          2.2.5
com.apple.driver.AppleThunderboltEDMSink          1.2.1
com.apple.driver.AppleThunderboltDPOutAdapter          2.5.0
com.apple.driver.AppleSMBusPCI          1.0.12d1
com.apple.driver.AppleHDAController          2.5.2fc2
com.apple.iokit.IOHDAFamily          2.5.2fc2
com.apple.iokit.IOSurface          91
com.apple.iokit.IOAcceleratorFamily2          98.7.1
com.apple.AppleGraphicsDeviceControl          3.4.12
com.apple.driver.IOPlatformPluginLegacy          1.0.0
com.apple.driver.X86PlatformPlugin          1.0.0
com.apple.driver.AppleSMC          3.1.6d1
com.apple.driver.IOPlatformPluginFamily          5.5.1d27
com.apple.driver.AppleGraphicsControl          3.4.12
com.apple.driver.AppleBacklightExpert          1.0.4
com.apple.iokit.IONDRVSupport          2.3.6
com.apple.driver.AppleSMBusController          1.0.11d1
com.apple.iokit.IOGraphicsFamily          2.3.6
com.apple.driver.AppleUSBMultitouch          240.6
com.apple.driver.AppleThunderboltDPInAdapter          2.5.0
com.apple.driver.AppleThunderboltDPAdapterFamily          2.5.0
com.apple.driver.AppleThunderboltPCIDownAdapter          1.4.0
com.apple.iokit.IOUSBHIDDriver          650.4.4
com.apple.driver.AppleUSBMergeNub          650.4.0
com.apple.driver.AppleUSBComposite          650.4.0
com.apple.iokit.IOSCSIMultimediaCommandsDevice          3.6.0
com.apple.iokit.IOBDStorageFamily          1.7
com.apple.iokit.IODVDStorageFamily          1.7.1
com.apple.iokit.IOCDStorageFamily          1.7.1
com.apple.iokit.IOAHCISerialATAPI          2.6.0
com.apple.iokit.IOSCSIArchitectureModelFamily          3.6.0
com.apple.driver.AppleThunderboltNHI          1.9.2
com.apple.iokit.IOThunderboltFamily          2.8.5
com.apple.iokit.IO80211Family          600.34
com.apple.iokit.IOFireWireFamily          4.5.5
com.apple.iokit.IOUSBUserClient          650.4.4
com.apple.iokit.IOEthernetAVBController          1.0.3b3
com.apple.driver.mDNSOffloadUserClient          1.0.1b4
com.apple.iokit.IONetworkingFamily          3.2
com.apple.iokit.IOAHCIFamily          2.6.0
com.apple.iokit.IOUSBFamily          650.4.4
com.apple.driver.AppleEFINVRAM          2.0
com.apple.driver.AppleEFIRuntime          2.0
com.apple.iokit.IOHIDFamily          2.0.0
com.apple.iokit.IOSMBusFamily          1.1
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          21
com.apple.driver.AppleFDEKeyStore          28.30
com.apple.driver.AppleACPIPlatform          2.0
com.apple.iokit.IOPCIFamily          2.8
com.apple.iokit.IOACPIFamily          1.4
com.apple.kec.pthread          1
com.apple.kec.corecrypto          1.0
Model: MacBookPro9,2, BootROM MBP91.00D3.B08, 2 processors, Intel Core i5, 2.5 GHz, 4 GB, SMC 2.2f44
Graphics: Intel HD Graphics 4000, Intel HD Graphics 4000, Built-In, 1024 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1600 MHz, 0x802C, 0x384A54463235363634485A2D3147364D3120
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1600 MHz, 0x802C, 0x384A54463235363634485A2D3147364D3120
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xF5), Broadcom BCM43xx 1.0 (5.106.98.100.22)
Bluetooth: Version 4.2.0f6 12982, 3 services, 15 devices, 1 incoming serial ports
Network Service: 802.11 n WLAN, Ethernet, en3
Serial ATA Device: APPLE HDD HTS547550A9E384, 500.11 GB
Serial ATA Device: HL-DT-ST DVDRW GS31N
USB Device: USB Receiver
USB Device: Hub
USB Device: FaceTime HD Camera (Built-in)
USB Device: Hub
USB Device: 802.11 n WLAN
USB Device: Hub
USB Device: IR Receiver
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
USB Device: Apple Internal Keyboard / Trackpad
Thunderbolt Bus: MacBook Pro, Apple Inc., 25.1
could the ralink driver be interfering?
thank-you for your diligence with this
Message was edited by: julie andor gus

My Brandnew 15 inch Macbook Pro (mid 2012) Crash to Black Screen

My Brandnew Macbook Pro (Mid-2012) just purchased last August 2012, i turned it on and watched some movie online and youtube when all of a sudden, the screen would turn black and the machine would not react to any keyboard or mouse input anymore. All I could do was hold down the power button to turn the computer off.
i really appreciate your ideas about this problem...

If it has happened more than once, make a "Genius" appointment at an Apple Store to have the machine tested.
Back up all data on the internal drive(s) before you hand over your computer to anyone. If privacy is a concern, erase the data partition(s) with the option to write zeros* (do this only if you have at least two complete, independent backups, and you know how to restore to bare metal from any of them.) Don’t erase the recovery partition, if present.
*An SSD doesn't need to be zeroed.

My Macbook Pro (Mid-2012) won't connect to an external display using my MiniDP to VGA Cable.

I'm on a Macbook Pro (Mid-2012) on Mac OS X 10.8.3 (currently downloading the update to 8.4). When I plug in my Mini Displayport to VGA adapter to my Mac, the screen flickers blue for a second and the Display Settings window detects the other monitor and allows me to rearrange the screen, but it does not project anything onto the other monitor. However, I tried connecting an Apple Thunderbolt Monitor to this computer today, and it worked. This wasn't a problem before, as I was able to connect this Mac to other LCD projects before. Furthermore, I don't think it's an issue with the adapter either because it's relatively new. I also tried plugging in the adapter of another Mac (which was working fine) into my Mac, but it didn't work either.
Here's what I've tried:
1. Restarting the computer with everything plugged in
2. Pressing Command + F1 when it's plugged
Any advice would be helpful!

Hi lancekatigbak,
If you're having issues with the display out on your MacBook Pro, you may want to take a look at the troubleshooting steps in the following article:
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/ht1573
Cheers,
- Brenden

MacBook Pro(Mid 2012) Can't connect to my Dynex TV with mini display port to VGA adapter

I have a MacBook Pro(Mid 2012, running OS X 10.9.4) and I recently just bought a mini display port to VGA adapter so I could hook it up to my dynex TV but when I connect everything my TV says no signal. Do I need to do something in settings?

Hi psikalis,
If you are having issues connecting an external display to your MacBook Pro, you may find the information and troubleshooting steps in the following articles helpful:
OS X Mavericks: Connect multiple displays to your Mac
http://support.apple.com/kb/PH13814
Apple computers: Troubleshooting issues with video on internal or external displays
http://support.apple.com/kb/HT1573
Regards,
- Brenden

How can connect my macbook pro mid 2012 to my imac 21.5 inch mid 2010 ?? I want to use imac like a display for macbook.

How can connect my macbook pro mid 2012 to my imac 21.5 inch mid 2010 ?? I want to use imac like a display for macbook.

Target Display Mode: Frequently Asked Questions (FAQ)
with a mini display to mini display cable. Attach it to the Thunderbolt port on your MBP and to the mini display port on your iMac.
How do I enable TDM?
Make sure both computers are turned on and awake.
Connect a male-to-male Mini DisplayPort or ThunderBolt cable to each computer.
Press Command-F2 on the keyboard of the iMac being used as a display to enable TDM.
Note: In Keyboard System Preferences, if the checkbox is enabled for "Use all F1, F2, etc. keys as standard functions keys," the key combination changes to Command-Fn-F2.

Can I use my macbook pro mid 2012 as an external display using thunderbolt port

Hi,
I want to use my macbook pro (mid 2012) screen as an external display for a raspberry pi using a HDMI to Thunderbolt cable, via the thunderbolt port on the macbook pro. Would this be possible? Can the macbook pro's thunder bolt port act as an input and is any additional software required?
I look forward to hearing from you.
Thanks in advance!

Welcome to Apple Support Communities
You are referring to Target Display mode. Target Display mode can only be used in 27-inch iMacs and iMacs with Thunderbolt, not MacBooks Pro > http://support.apple.com/kb/PH11302
Unfortunately, you can't use the MacBook Pro as a display. It doesn't support the monitor mode

Macbook pro mid-2012 13" has very slow disk access

Until 3 days ago my macbook pro mid-2012 13" running OX 10.8.3 was running fine. Then, it showed very slow response anytime it had to access the hard disk. After doing the usual checks and disk first aid repairs to no avail, I booted from my external disk with an older copy of my hard disk and everything then worked as normal, except when I accessed the internal hard disk, then it crawled once again (spinning beach ball, took many seconds just to open a finder window and then several minutes to display the contents). I ran the Apple Hardware Tests and it said everything was fine, even though it tooks several minutes before the test would actually start. I also ran the program BlackMagic Speed Disk to find out if the disk was having transfer speed problems and it showed a respectible transfer rate (60MB/s), not great but not like the 0.3MB/s I was getting when I tried to back up the internal disk. I was using Carbon Copy Cloner to try to back up the internal disk but had to give up since at 0.3MB/s, it would take days to back up the 250GB on the disk. I found on the web that using "restore" in Disk Utility, I could do a disk copy without the file by file copy which allowed me to back up my disk in "only" 6 hours. Booting from my newly made copy on an external disk worked fine and ran at nearly normal speed (slightly slower since it was an external disk running through USB2). As a final attempt to prove this was a disk problem, I erased the internal disk and reinstalled OSX 10.8. I am still waiting for this install to finish, it has been 5 hours although the progress bar said it should be done in 20 minutes. This was fairly convincing evidence that it is not a software or settings problem. However, all my web searches could find no other case of a problem like mine. I presume I have a failed hard disk but as all the diagnostic programs say it is working fine, I was hesitating to bring it in without hard diagnostic evidence. If anyone knows what might be the problem, it would be much appreciated to hear from you.

It should not take 5 hours to install Mac OS X. There is something wrong with the disk. Try reformatting where you do a wipe of the drive (an select the option to write zeros which will remap bad sectors). Then try to install MAc OS X.
I got this information from here:
http://reviews.cnet.com/8301-13727_7-20064489-263.html
Back up your data.
Use Time Machine or a system cloning utility to create a full and restorable backup of your data. If you suspect bad blocks, then when cloning you might consider not using a "block-level" copy process, since this will likely run into problems.
Boot to the utilities DVD.
If you have a boot DVD for a tool like Drive Genius or another drive utility, then boot to that; if not, use your OS X installation DVD (once you select your language, open Disk Utility from the Utilities menu).
Format the drive.
Using your selected utility, format the drive and check for bad blocks. If you are using Disk Utility, click the Erase tab, click the Options button, and then select the option to write zeros to the disk (you do not need to do multipass erase options, as this will provide no additional benefit for managing bad blocks). Writing to zeros may take a couple of hours depending on the size of the drive, but when done the drive will have remapped any blocks that were not reliably read.
Restore the OS installation.
If you have used Time Machine to create your backup, boot to your OS X installation DVD (if you are not using Disk Utility) and use the option in the Utilities menu to restore from backup. Attach your Time Machine drive and then proceed with the restoration, selecting the newest backup as the one to restore to your system. If you have used a system cloning tool, then attach the cloned drive and boot off of it (hold the Option key at start-up to select it from the boot menu). When you are booted to the cloned drive, run your cloning utility to copy the installation back to the computer's main boot drive.An optional approach here is to perform a full reinstallation of the OS from your installation DVD, and then migrate your data, applications, and settings from either the clone or the Time Machine backups using Apple's Migration Assistant.

MacBook Pro mid 2012 15" - one RAM slot gone bad

Hi,
Has anyone ever had the issue with not working RAM slot? My MacBook Pro mid 2012 (non-retina) suddenly froze and after restart was beeping three times every few seconds. I found out that the beeping signals bad RAM. Bought new chips, and the problem still exists. My mac can now run on one slot with 4GB RAM.
I did check the placement of the chips in the slots, i also checked one slot at a time, and one of them has gone broken.
Any ideas on how to make it run again? or if it is possible to replace the slots?
Brgds
Marek
MacBook Pro 2,7GHz Intel Core i7 / OSX 10.9.4

The Apple-accepted cure for a dead RAM slot is a new logic board. Unless you ahve AppleCare, that will be an expensive fix.
An Apple service option is the "depot repair." Instead of working on your computer in the Apple Store, they send it to a centralized refurbishment facility where they fix anything they find wrong (except for cosmetic damage and damage from abuse like dropping) for a flat fee of a little over US$300. That is between 30 and 40 percent of the parts and labor charges if Apple installs a new board in an Apple Store. Sometimes they will install an new battery at the depot without increasing the flat fee.
The downside is that it takes about a week; for that level of cost savings, I could do without my computer for a week.
So take it to Apple and ask about a depot repair.
A low-tech and low-cost option is to expand on what you are doing now--using one slot. Although the official RAM limit on your model is 8GB RAM (two 4GB models), your model can actually handle a total of 16GB (two 8GB modules. You can ignore the dead slot and put an 8GB module in the good slot. My 2012 MBP has 8GB RAM and is completely happy running Mavericks.
Be sure to ONLY get the RAM from an Mac-savvy vendor. For over a decade I've bought all our Mac RAM from one supplier. This is their page for an 8GB module for your MBP model:
http://eshop.macsales.com/item/OWC/1600DDR3S8GB/
I would also trust Crucial on this one. For a change they recognize that your model can use more RAM than stated in Apple's outdated specs:
http://www.crucial.com/usa/en/compatible-upgrade-for/Apple/macbook-pro-%2813-inc h-and-15-inch%2C-mid-2012%29

Power Nap on Macbook Pro Mid 2012?

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