iMac doesn't wake after installing 16GB extra Ram

Question

iMac doesn't wake after installing 16GB extra Ram

This morning I added 16 GB RAM (2x8GB) (EAN 0649528762139 Vendor: CT2C8G3S160BMCEU) to my iMac so it has now 24GB. Everything seemed OK until my iMac went to sleep. After that I couldn't wake it up. I had to manually shut it down by holding the power button for 10 seconds. I then started it up after which I got a panic report. A few hours after that I had the exact same problem. After that I switched it of and changed the places of the Dimms.

Originally I had 8GB (2x4GB) in slot 0- dimm 0 and slot 1- dimm 0. I put the new one in slot 0- dimm 1 and slot 1- dimm 1 after which the problems started so I tried and switched it as follows:

BANK 0/DIMM0:

Grootte: 8 GB

Type: DDR3

Snelheid: 1600 MHz

Status: OK

Fabrikant: 0x859B

Onderdeelnummer: 0x43543130323436344246313630422E433136

*removed personal information*

BANK 1/DIMM0:

Grootte: 4 GB

Type: DDR3

Snelheid: 1600 MHz

Status: OK

Fabrikant: 0x80AD

Onderdeelnummer: 0x484D54333531533643465238432D50422020

Serienummer: 0x1A16C26F

BANK 0/DIMM1:

Grootte: 8 GB

Type: DDR3

Snelheid: 1600 MHz

Status: OK

Fabrikant: 0x859B

Onderdeelnummer: 0x43543130323436344246313630422E433136

Serienummer: 0x32989C2E

BANK 1/DIMM1:

Grootte: 4 GB

Type: DDR3

Snelheid: 1600 MHz

Status: OK

Fabrikant: 0x80AD

Onderdeelnummer: 0x484D54333531533643465238432D50422020

Serienummer: 0x1A36C280

Anonymous UUID: 7CFEB3E7-0149-D69E-0E2C-CE2D45FE8871

Sun Jun 21 21:04:18 2015

*** Panic Report ***
panic(cpu 0 caller 0xffffff80018186ba): "Double fault at 0xffffff80018347e4, registers:\n" "CR0: 0x000000008001003b, CR2: 0xffffff829e70fff8, CR3: 0x0000000004c43000, CR4: 0x00000000001626e0\n" "RAX: 0x0000000000000008, RBX: 0xffffff829e710230, RCX: 0xffffff802e7295c0, RDX: 0xffffff80018349a0\n" "RSP: 0xffffff829e710000, RBP: 0xffffff829e710200, RSI: 0xffffff829e710210, RDI: 0xffffff829e710230\n" "R8: 0x0000000000000002, R9: 0xffffff802e7295c0, R10: 0x0000000000000071, R11: 0x000000000000000c\n" "R12: 0xffffff829e710220, R13: 0xffffff82e4fa3c00, R14: 0x000000009e710210, R15: 0xffffff829e710230\n" "RFL: 0x0000000000010046, RIP: 0xffffff80018347e4, CS: 0x0000000000000008, SS: 0x0000000000000010\n" "Error code: 0x0000000000000000\n"@/SourceCache/xnu/xnu-2782.20.48/osfmk/i386/trap_native.c:168
Backtrace (CPU 0), Frame : Return Address
0xffffff829e71fcf0 : 0xffffff800172bda1
0xffffff829e71fd70 : 0xffffff80018186ba
0xffffff829e71fed0 : 0xffffff800183543f
0xffffff829e710200 : 0xffffff8001834b73
0xffffff829e710220 : 0xffffff800181741c
0xffffff829e7104c0 : 0xffffff8001834b73
0xffffff829e7104e0 : 0xffffff800181741c
0xffffff829e710780 : 0xffffff8001834b73
0xffffff829e7107a0 : 0xffffff800181741c
0xffffff829e710a40 : 0xffffff8001834b73
0xffffff829e710a60 : 0xffffff800181741c
0xffffff829e710d00 : 0xffffff8001834b73
0xffffff829e710d20 : 0xffffff800181741c
0xffffff829e710fc0 : 0xffffff8001834b73
0xffffff829e710fe0 : 0xffffff800181741c
0xffffff829e711280 : 0xffffff8001834b73
0xffffff829e7112a0 : 0xffffff800181741c
0xffffff829e711540 : 0xffffff8001834b73
0xffffff829e711560 : 0xffffff800181741c
0xffffff829e711800 : 0xffffff8001834b73
0xffffff829e711820 : 0xffffff800181741c
0xffffff829e711ac0 : 0xffffff8001834b73
0xffffff829e711ae0 : 0xffffff800181741c
0xffffff829e711d80 : 0xffffff8001834b73
0xffffff829e711da0 : 0xffffff800181741c
0xffffff829e712040 : 0xffffff8001834b73
0xffffff829e712060 : 0xffffff800181741c
0xffffff829e712300 : 0xffffff8001834b73
0xffffff829e712320 : 0xffffff800181741c
0xffffff829e7125c0 : 0xffffff8001834b73
0xffffff829e7125e0 : 0xffffff800181741c
0xffffff829e712880 : 0xffffff8001834b73
0xffffff829e7128a0 : 0xffffff800181741c
0xffffff829e712b40 : 0xffffff8001834b73
0xffffff829e712b60 : 0xffffff800181741c
0xffffff829e712e00 : 0xffffff8001834b73
0xffffff829e712e20 : 0xffffff800181741c
0xffffff829e7130c0 : 0xffffff8001834b73
0xffffff829e7130e0 : 0xffffff800181741c
0xffffff829e713380 : 0xffffff8001834b73
0xffffff829e7133a0 : 0xffffff800181741c
0xffffff829e713640 : 0xffffff8001834b73
0xffffff829e713660 : 0xffffff800181741c
0xffffff829e713900 : 0xffffff8001834b73
0xffffff829e713920 : 0xffffff800181741c
0xffffff829e713bc0 : 0xffffff8001834b73
0xffffff829e713be0 : 0xffffff800181741c
0xffffff829e713e80 : 0xffffff8001834b73
0xffffff829e713ea0 : 0xffffff8001816f98
0xffffff829e713fd0 : 0xffffff8001834d39
0xffffff82e4fa3ce0 : 0xffffff7f84448f18
0xffffff82e4fa3d20 : 0xffffff7f8444c64b
0xffffff82e4fa3d40 : 0xffffff8001cf1f8b
0xffffff82e4fa3d90 : 0xffffff8001d1adfc
0xffffff82e4fa3df0 : 0xffffff8001cc58a7
0xffffff82e4fa3e60 : 0xffffff8001cbc4ba
0xffffff82e4fa3ef0 : 0xffffff8001ccacc8
0xffffff82e4fa3f40 : 0xffffff8001cd3bad
0xffffff82e4fa3f80 : 0xffffff8001cd3da8
0xffffff82e4fa3fb0 : 0xffffff80018125b7

BSD process name corresponding to current thread: kernel_task

Mac OS version:
14D136

Kernel version:
Darwin Kernel Version 14.3.0: Mon Mar 23 11:59:05 PDT 2015; root:xnu-2782.20.48~5/RELEASE_X86_64
Kernel UUID: 4B3A11F4-77AA-3D27-A22D-81A1BC5B504D
Kernel slide: 0x0000000001400000
Kernel text base: 0xffffff8001600000
__HIB text base: 0xffffff8001500000
System model name: iMac13,2 (Mac-FC02E91DDD3FA6A4)

System uptime in nanoseconds: 6312299410789
last loaded kext at 115179523065: com.apple.filesystems.smbfs 3.0.1 (addr 0xffffff7f8224a000, size 393216)
last unloaded kext at 155220331351: com.apple.driver.AirPort.Brcm4331 800.20.24 (addr 0xffffff7f83695000, size 2043904)
loaded kexts:
com.apple.filesystems.smbfs 3.0.1
com.apple.driver.AudioAUUC 1.70
com.apple.driver.AppleHWSensor 1.9.5d0
com.apple.driver.AppleBluetoothMultitouch 85.3
com.apple.driver.AGPM 110.19.5
com.apple.driver.ApplePlatformEnabler 2.2.0d4
com.apple.driver.X86PlatformShim 1.0.0
com.apple.filesystems.autofs 3.0
com.apple.driver.AppleMikeyHIDDriver 124
com.apple.driver.AppleOSXWatchdog 1
com.apple.iokit.IOBluetoothSerialManager 4.3.4f4
com.apple.driver.AppleHDA 272.18
com.apple.driver.AppleUpstreamUserClient 3.6.1
com.apple.iokit.IOUserEthernet 1.0.1
com.apple.GeForce 10.0.2
com.apple.Dont_Steal_Mac_OS_X 7.0.0
com.apple.driver.AppleIntelHD4000Graphics 10.0.6
com.apple.driver.AppleHWAccess 1
com.apple.driver.AppleMikeyDriver 272.18
com.apple.driver.AppleHV 1
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.3.4f4
com.apple.driver.AppleLPC 1.7.3
com.apple.driver.AppleSMCLMU 2.0.7d0
com.apple.driver.AppleIntelFramebufferCapri 10.0.6
com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0
com.apple.driver.AppleThunderboltIP 2.0.2
com.apple.driver.AppleBacklight 170.7.4
com.apple.driver.AppleMCCSControl 1.2.11
com.apple.iokit.SCSITaskUserClient 3.7.5
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib 1.0.0d1
com.apple.BootCache 36
com.apple.driver.XsanFilter 404
com.apple.iokit.IOAHCIBlockStorage 2.7.1
com.apple.driver.AppleSDXC 1.6.5
com.apple.iokit.AppleBCM5701Ethernet 10.1.3
com.apple.driver.AppleUSBHub 705.4.2
com.apple.driver.AirPort.Brcm4360 930.37.3
com.apple.driver.AppleAHCIPort 3.1.2
com.apple.driver.AppleUSBEHCI 705.4.14
com.apple.driver.AppleUSBXHCI 710.4.11
com.apple.driver.AppleRTC 2.0
com.apple.driver.AppleACPIButtons 3.1
com.apple.driver.AppleHPET 1.8
com.apple.driver.AppleSMBIOS 2.1
com.apple.driver.AppleACPIEC 3.1
com.apple.driver.AppleAPIC 1.7
com.apple.driver.AppleIntelCPUPowerManagementClient 218.0.0
com.apple.nke.applicationfirewall 161
com.apple.security.quarantine 3
com.apple.security.TMSafetyNet 8
com.apple.driver.AppleIntelCPUPowerManagement 218.0.0
com.apple.driver.AppleBluetoothHIDKeyboard 176.2
com.apple.driver.AppleHIDKeyboard 176.2
com.apple.driver.IOBluetoothHIDDriver 4.3.4f4
com.apple.driver.AppleMultitouchDriver 263.9.1
com.apple.kext.triggers 1.0
com.apple.iokit.IOSerialFamily 11
com.apple.driver.DspFuncLib 272.18
com.apple.kext.OSvKernDSPLib 1.15
com.apple.nvidia.driver.NVDAGK100Hal 10.0.2
com.apple.nvidia.driver.NVDAResman 10.0.2
com.apple.iokit.IOSurface 97.4
com.apple.iokit.IOBluetoothHostControllerUSBTransport 4.3.4f4
com.apple.iokit.IOBluetoothFamily 4.3.4f4
com.apple.driver.AppleHDAController 272.18
com.apple.iokit.IOHDAFamily 272.18
com.apple.iokit.IOAudioFamily 203.3
com.apple.vecLib.kext 1.2.0
com.apple.driver.X86PlatformPlugin 1.0.0
com.apple.driver.IOPlatformPluginFamily 5.9.1d7
com.apple.iokit.IOAcceleratorFamily2 156.14
com.apple.AppleGraphicsDeviceControl 3.10.22
com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0
com.apple.driver.AppleThunderboltEDMSink 4.0.2
com.apple.iokit.IOUSBUserClient 705.4.0
com.apple.driver.AppleSMBusPCI 1.0.12d1
com.apple.driver.AppleBacklightExpert 1.1.0
com.apple.driver.AppleSMC 3.1.9
com.apple.iokit.IONDRVSupport 2.4.1
com.apple.driver.AppleSMBusController 1.0.13d1
com.apple.iokit.IOGraphicsFamily 2.4.1
com.apple.iokit.IOSCSIBlockCommandsDevice 3.7.5
com.apple.iokit.IOSCSIMultimediaCommandsDevice 3.7.5
com.apple.iokit.IOBDStorageFamily 1.7
com.apple.iokit.IODVDStorageFamily 1.7.1
com.apple.iokit.IOCDStorageFamily 1.7.1
com.apple.iokit.IOUSBMassStorageClass 3.7.2
com.apple.iokit.IOSCSIArchitectureModelFamily 3.7.5
com.apple.driver.AppleUSBMergeNub 705.4.0
com.apple.driver.AppleUSBComposite 705.4.9
com.apple.driver.CoreStorage 471.20.7
com.apple.driver.AppleThunderboltDPInAdapter 4.0.6
com.apple.driver.AppleThunderboltDPOutAdapter 4.0.6
com.apple.driver.AppleThunderboltDPAdapterFamily 4.0.6
com.apple.driver.AppleThunderboltPCIDownAdapter 2.0.2
com.apple.driver.AppleThunderboltNHI 3.1.7
com.apple.iokit.IOThunderboltFamily 4.2.2
com.apple.iokit.IOEthernetAVBController 1.0.3b3
com.apple.iokit.IO80211Family 730.60
com.apple.driver.mDNSOffloadUserClient 1.0.1b8
com.apple.iokit.IONetworkingFamily 3.2
com.apple.iokit.IOAHCIFamily 2.7.5
com.apple.iokit.IOUSBFamily 720.4.4
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 300.0
com.apple.kext.AppleMatch 1.0.0d1
com.apple.driver.AppleKeyStore 2
com.apple.driver.AppleMobileFileIntegrity 1.0.5
com.apple.driver.AppleCredentialManager 1.0
com.apple.driver.DiskImages 396
com.apple.iokit.IOStorageFamily 2.0
com.apple.iokit.IOReportFamily 31
com.apple.driver.AppleFDEKeyStore 28.30
com.apple.driver.AppleACPIPlatform 3.1
com.apple.iokit.IOPCIFamily 2.9
com.apple.iokit.IOACPIFamily 1.4
com.apple.kec.Libm 1
com.apple.kec.pthread 1
com.apple.kec.corecrypto 1.0
Model: iMac13,2, BootROM IM131.010A.B05, 4 processors, Intel Core i7, 3.4 GHz, 24 GB, SMC 2.11f16
Graphics: NVIDIA GeForce GTX 680MX, NVIDIA GeForce GTX 680MX, PCIe, 2048 MB
Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x859B, 0x43543130323436344246313630422E433136
Memory Module: BANK 1/DIMM0, 4 GB, DDR3, 1600 MHz, 0x80AD, 0x484D54333531533643465238432D50422020
Memory Module: BANK 0/DIMM1, 8 GB, DDR3, 1600 MHz, 0x859B, 0x43543130323436344246313630422E433136
Memory Module: BANK 1/DIMM1, 4 GB, DDR3, 1600 MHz, 0x80AD, 0x484D54333531533643465238432D50422020
AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0xF4), Broadcom BCM43xx 1.0 (7.15.166.24.3)
Bluetooth: Version 4.3.4f4 15601, 3 services, 27 devices, 1 incoming serial ports
Network Service: Wi-Fi, AirPort, en1
Serial ATA Device: APPLE HDD ST3000DM001, 3 TB
Serial ATA Device: APPLE SSD SM128E, 121,33 GB
USB Device: My Passport 0820
USB Device: Hub
USB Device: FaceTime HD Camera (Built-in)
USB Device: Hub
USB Device: Hub
USB Device: BRCM20702 Hub
USB Device: Bluetooth USB Host Controller
Thunderbolt Bus: iMac, Apple Inc., 23.4

Then I removed one 8GB dimm (so 16 GB in total): system awakens from sleep several times.

The I switched the 8GB dimm in the system with the other one I had removed: no awakening from sleep.

Bingo, I thought, this one is causing the problem.

Now today I got the dimms replaced by my supplier but the problem is not gone.

Again the iMac doesn't awake from sleep. I tried to switch positions again but no solution.

I tried the same as yesterday: removing one 8GB dimm and let system go to sleep: system does not wake up.

Removed the one 8GB from system and put the other 8GB dimm in. Let system go to sleep. System does wake up as normal.

Any suggestions since it's hard to believe I got a second faulty set of dimms...

John

iMac, OS X Yosemite (10.10.3)

Posted on Jun 23, 2015 12:06 PM

Reply

Answer 1

SeaPapp

Level 7

26,486 points

Jun 23, 2015 1:21 PM in response to johnfromassenede

Is that Crucial ram? Return it for refund and purchase directly from Crucial. The correct part number is

CT3650258

Reply

Answer 2

Jun 23, 2015 1:24 PM in response to SeaPapp

Yes, Crucial (twice). CT2C8G3S160BMCEU

Why purchase directly from Crucial? Are these dimms different from those from a supplier with good reputation in Belgium?

Thanks,

John

Reply

Answer 3

SeaPapp

Level 7

26,486 points

Jun 23, 2015 1:26 PM in response to johnfromassenede

Because your trusted supplier in Belgium is selling you the wrong ram. Go to Crucials web page and use their Crucial Advisor Tool to find the right ram http://www.crucial.com/

Reply

Answer 4

Jun 23, 2015 1:34 PM in response to SeaPapp

When I use the Advisor Tool and enter the part number CT2C8G3S + my iMac configuration (late 2012 of 2013) the part number is changed to CT3650255.

I think I will return the ram to my supplier and ask them to either deliver a set with the correct number or I will order from Crucial directly.

Thanks for your help!

John

Reply

Answer 5

Jun 28, 2015 3:22 PM in response to johnfromassenede

I returned the 16GB (2x8GB Dimms) back to my supplier. Since he didn't have the Dimms with the correct part number available he kindly refunded me my money. I ordered the correct part-number (CT3650255) with Crucial directly through their website. Paid 7 EUR extra to get the Dimms within 1-3 working days. The next day they were already delivered. Thanks Crucial for speedy delivery!

But to my HUGE surprise the part number on the packaging was CT2C8G3S..... yes indeed, the same number that was on the Dimms I got from my Belgian supplier.... I wasn't too happy about that. The invoice however stated Part number CT3650255 while it also mentioned under Material: CT2C8G3S.

So it seemed I was stuck with the same Dimms. I put them in my iMac, let it go to sleep and IT WOKE. Did the test several times this weekend: short sleeps, longs sleeps: everytime my iMac awakens.

My 3 cents: this must be from another series than the Dimms I bought in Belgium (because visually the package looks exactly the same). The ones I got from Crucial directly work alright. The others (remember 1x8GB added gave no trouble, the other 8GB Dimms gave troubles, used alone or used in combination with the first 8GB) must have been from a faulty series.

John

Reply

Answer 6

Jul 23, 2015 3:03 PM in response to johnfromassenede

Hey John,

Another possibility is that it isn't the RAM at all. Are you, by any chance, using a bluetooth keyboard and mouse? Because I had (have?) this exact problem and never changed or added new ram. I have a 16gb iMac from Apple directly. There are several threads of people having this problem. The problem seems somewhat intermittent meaning you think it's fixed and then it hits you again and you can't reliably wake it up. Those are my symptoms at least and I've had not much help from either Apple support or the community at being able to fix it either.

Anyway, maybe for you it really was the RAM and it's fixed and you're in the clear. But maybe it's something else entirely...

(iMac not waking up from sleep after Yosemite upgrade )

My 2¢

Reply

Answer 7

Jul 26, 2015 3:18 AM in response to LivingAimlessly

Hey,

I'm quite sure it isn't bluetooth issue because I never experienced this problem in almost 2 years with the default 8GB RAM installed. And since I put the extra 16GB which I ordered form Crucial directly (BTW ordered wednesday at 2pm, delivered at thursday 3pm ⚠) the problem has never occurred again. It is almost 100% the Dimms I got here in Belgium which caused the problem.

Thanks for your input.

John

Reply

Answer 8

Rudegar

Level 10

170,670 points

Jul 26, 2015 3:24 AM in response to johnfromassenede

one or more of the modules could be defect they are very very sensitive to statics so if you were not grounded when handling it you could have torched them by touch

they can max handle a 50volt and statics is 50000volts

Reply