6 Replies Latest reply: Feb 6, 2015 8:03 PM by Drew Reece
dubbydoug Level 1 Level 1

Every time I start my (refurbished 6,2) mac mini after it's been off for a while (typically overnight), it restarts immediately during startup and I get the "your computer has restarted because of a problem" error message.  I can restart it without problems at that point, it all works as designed.  Until I leave it for several hours again, then I get the restart problem. 

I'm concerned it has to do with the com.paceap.kext.pacesupport.snowleopard 5.9.1 kext, which clearly isn't designed for Mountain Lion...  Or is it to do with the 16 GB of RAM I installed?  I checked the RAM with rember, came back clean.  Can anyone help me with this? 

Here's the output:


Interval Since Last Panic Report:  4961 sec

Panics Since Last Report:          1

Anonymous UUID:                    ***********



Tue Dec 17 08:08:14 2013

panic(cpu 0 caller 0xffffff80278a3022): "pmap_pv_remove(0xffffff8048b78c00,0x7fc875111000,0x80, 0x80000, 0xffffff81f7ed3cf4, 0xfffffeae24a14888): null pv_list!"@/SourceCache/xnu/xnu-2050.24.15/osfmk/i386/pmap_internal.h:753

Backtrace (CPU 0), Frame : Return Address

0xffffff81f7ed3bf0 : 0xffffff802781d626

0xffffff81f7ed3c60 : 0xffffff80278a3022

0xffffff81f7ed3d20 : 0xffffff80278a3585

0xffffff81f7ed3d70 : 0xffffff802786720c

0xffffff81f7ed3e60 : 0xffffff802786b0e0

0xffffff81f7ed3e90 : 0xffffff8027835d03

0xffffff81f7ed3ed0 : 0xffffff8027b566d7

0xffffff81f7ed3f40 : 0xffffff8027b56479

0xffffff81f7ed3f50 : 0xffffff8027be16aa

0xffffff81f7ed3fb0 : 0xffffff80278ce9c3



BSD process name corresponding to current thread: pcscd



Mac OS version:




Kernel version:

Darwin Kernel Version 12.4.0: Wed May  1 17:57:12 PDT 2013; root:xnu-2050.24.15~1/RELEASE_X86_64

Kernel UUID: 896CB1E3-AB79-3DF1-B595-549DFFDF3D36

Kernel slide:     0x0000000027600000

Kernel text base: 0xffffff8027800000

System model name: Macmini6,2 (Mac-F65AE981FFA204ED)



System uptime in nanoseconds: 25652224596

last loaded kext at 25424635592: com.apple.driver.AudioAUUC          1.60 (addr 0xffffff7fa8b8b000, size 32768)

loaded kexts:

com.paceap.kext.pacesupport.snowleopard          5.9.1

com.digidesign.fwfamily.driver          9.0f4

com.apple.driver.AudioAUUC          1.60

com.apple.driver.ApplePlatformEnabler          2.0.6d1

com.apple.driver.AGPM          100.12.87

com.apple.driver.X86PlatformShim          1.0.0

com.apple.iokit.IOBluetoothSerialManager          4.1.4f2

com.apple.driver.AppleMikeyHIDDriver          122

com.apple.driver.AppleHDAHardwareConfigDriver          2.3.7fc4

com.apple.driver.AppleHDA          2.3.7fc4

com.apple.filesystems.autofs          3.0

com.apple.iokit.IOBluetoothUSBDFU          4.1.4f2

com.apple.iokit.BroadcomBluetoothHCIControllerUSBTransport          4.1.4f2

com.apple.driver.AppleUpstreamUserClient          3.5.10

com.apple.driver.AppleMCCSControl          1.1.11

com.apple.driver.ACPI_SMC_PlatformPlugin          1.0.0

com.apple.driver.AppleMikeyDriver          2.3.7fc4

com.apple.driver.AppleLPC          1.6.0

com.apple.iokit.IOUserEthernet          1.0.0d1

com.apple.Dont_Steal_Mac_OS_X          7.0.0

com.apple.driver.ApplePolicyControl          3.4.5

com.apple.driver.AppleIntelHD4000Graphics          8.1.2

com.apple.driver.AppleIntelFramebufferCapri          8.1.2

com.apple.driver.AppleMuxControl          3.4.5

com.apple.driver.AppleSMCPDRC          1.0.0

com.apple.driver.AppleIRController          320.15

com.apple.driver.AppleFileSystemDriver          3.0.1

com.apple.AppleFSCompression.AppleFSCompressionTypeDataless          1.0.0d1

com.apple.AppleFSCompression.AppleFSCompressionTypeZlib          1.0.0d1

com.apple.BootCache          34

com.apple.driver.XsanFilter          404

com.apple.iokit.IOAHCIBlockStorage          2.3.1

com.apple.driver.AppleUSBHub          5.5.5

com.apple.driver.AppleFWOHCI          4.9.6

com.apple.driver.AppleSDXC          1.4.2

com.apple.iokit.AppleBCM5701Ethernet          3.6.1b4

com.apple.driver.AirPort.Brcm4331          615.20.17

com.apple.driver.AppleAHCIPort          2.5.2

com.apple.driver.AppleUSBEHCI          5.5.0

com.apple.driver.AppleUSBXHCI          5.6.0

com.apple.driver.AppleEFINVRAM          1.7

com.apple.driver.AppleRTC          1.5

com.apple.driver.AppleACPIButtons          1.7

com.apple.driver.AppleHPET          1.8

com.apple.driver.AppleSMBIOS          1.9

com.apple.driver.AppleACPIEC          1.7

com.apple.driver.AppleAPIC          1.6

com.apple.driver.AppleIntelCPUPowerManagementClient          196.0.0

com.apple.nke.applicationfirewall          4.0.39

com.apple.security.quarantine          2.1

com.apple.driver.AppleIntelCPUPowerManagement          196.0.0

com.apple.iokit.IOSerialFamily          10.0.6

com.apple.driver.DspFuncLib          2.3.7fc4

com.apple.kext.triggers          1.0

com.apple.iokit.AppleBluetoothHCIControllerUSBTransport          4.1.4f2

com.apple.driver.AppleHDAController          2.3.7fc4

com.apple.iokit.IOHDAFamily          2.3.7fc4

com.apple.driver.AppleUSBAudio          2.9.0f8

com.apple.iokit.IOFireWireIP          2.2.5

com.apple.driver.IOPlatformPluginLegacy          1.0.0

com.apple.driver.X86PlatformPlugin          1.0.0

com.apple.iokit.IOAudioFamily          1.8.9fc11

com.apple.kext.OSvKernDSPLib          1.6

com.apple.iokit.IOFireWireAVC          4.2.2

com.apple.iokit.IOSurface          86.0.4

com.apple.iokit.IOBluetoothFamily          4.1.4f2

com.apple.iokit.IOAcceleratorFamily          74.5.1

com.apple.driver.AppleSMBusController          1.0.11d0

com.apple.driver.AppleSMBusPCI          1.0.11d0

com.apple.driver.AppleSMC          3.1.4d2

com.apple.driver.AppleGraphicsControl          3.4.5

com.apple.driver.AppleBacklightExpert          1.0.4

com.apple.iokit.IONDRVSupport          2.3.7

com.apple.iokit.IOGraphicsFamily          2.3.7

com.apple.driver.IOPlatformPluginFamily          5.3.0d51

com.apple.driver.AppleThunderboltEDMSink          1.1.8

com.apple.driver.AppleThunderboltEDMSource          1.1.8

com.apple.driver.AppleThunderboltDPOutAdapter          1.8.9

com.apple.iokit.IOSCSIArchitectureModelFamily          3.5.5

com.apple.driver.AppleUSBMergeNub          5.5.5

com.apple.driver.AppleThunderboltDPInAdapter          1.8.9

com.apple.driver.AppleThunderboltDPAdapterFamily          1.8.9

com.apple.driver.AppleThunderboltPCIDownAdapter          1.2.6

com.apple.iokit.IOUSBHIDDriver          5.2.5

com.apple.driver.AppleUSBComposite          5.2.5

com.apple.driver.AppleThunderboltNHI          1.7.8

com.apple.iokit.IOThunderboltFamily          2.4.0

com.apple.iokit.IOFireWireFamily          4.5.5

com.apple.iokit.IOEthernetAVBController          1.0.2b1

com.apple.iokit.IOUSBUserClient          5.5.5

com.apple.iokit.IO80211Family          530.4

com.apple.iokit.IONetworkingFamily          3.0

com.apple.iokit.IOAHCIFamily          2.3.1

com.apple.iokit.IOUSBFamily          5.6.0

com.apple.driver.AppleEFIRuntime          1.7

com.apple.iokit.IOHIDFamily          1.8.1

com.apple.iokit.IOSMBusFamily          1.1

com.apple.security.sandbox          220.3

com.apple.kext.AppleMatch          1.0.0d1

com.apple.security.TMSafetyNet          7

com.apple.driver.DiskImages          345

com.apple.iokit.IOStorageFamily          1.8

com.apple.driver.AppleKeyStore          28.21

com.apple.driver.AppleACPIPlatform          1.7

com.apple.iokit.IOPCIFamily          2.7.3

com.apple.iokit.IOACPIFamily          1.4

com.apple.kec.corecrypto          1.0

Model: Macmini6,2, BootROM MM61.0106.B03, 4 processors, Intel Core i7, 2.3 GHz, 16 GB, SMC 2.8f1

Graphics: Intel HD Graphics 4000, Intel HD Graphics 4000, Built-In, 768 MB

Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x8394, 0x393732303338412028393737303338412900

Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x8394, 0x393732303338412028393737303338412900

AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x10E), Broadcom BCM43xx 1.0 (

Bluetooth: Version 4.1.4f2 12041, 2 service, 11 devices, 1 incoming serial ports

Network Service: Wi-Fi, AirPort, en1

Serial ATA Device: APPLE HDD HTS541010A9E662, 1 TB

USB Device: hub_device, 0x8087  (Intel Corporation), 0x0024, 0x1a100000 / 2

USB Device: hub_device, 0x0409  (NEC Corporation), 0x0050, 0x1a130000 / 3

USB Device: USB Uno MIDI Interface, 0x0763  (M-Audio), 0x0150, 0x1a131000 / 8

USB Device: Hub in Apple Extended USB Keyboard, apple_vendor_id, 0x1003, 0x1a133000 / 5

USB Device: iLok, 0x088e, 0x5036, 0x1a133200 / 7

USB Device: DELL USB Laser Mouse, 0x046d  (Logitech Inc.), 0xc063, 0x1a133100 / 6

USB Device: Apple Extended USB Keyboard, apple_vendor_id, 0x020b, 0x1a133300 / 4

USB Device: hub_device, 0x8087  (Intel Corporation), 0x0024, 0x1d100000 / 2

USB Device: hub_device, 0x0424  (SMSC), 0x2512, 0x1d180000 / 3

USB Device: IR Receiver, apple_vendor_id, 0x8242, 0x1d182000 / 5

USB Device: BRCM20702 Hub, 0x0a5c  (Broadcom Corp.), 0x4500, 0x1d181000 / 4

USB Device: Bluetooth USB Host Controller, apple_vendor_id, 0x828a, 0x1d181300 / 8

FireWire Device: Mbox 2 Pro, DIGIDESIGN, 400mbit_speed

Mac mini (Late 2012), OS X Mountain Lion (10.8.4)
  • K Shaffer Level 6 Level 6

    If the RAM was added after you bought the computer, have you tried reverting to the chips that were in the computer when you first bought it? From one reliable source the chip nomenclature is as follows:


    2 - 204-pin PC3-12800 (1600 MHz) DDR3 SO-DIMM {to 16GB}


    There may be a software you've installed that could cause a kernel panic.


    Sometimes the RAM specs of products installed are similar but not correct in an upgrade, or in rare instances there may be a defect. I could not tell from the report information you posted above if the matter was related to RAM, however.


    Memory specs & upgrade:



    Was there some other change you'd made to the computer, on or about the time this symptom started? Any third-party software you'd installed at a time the issue started should be seriously looked into and if needed, use their uninstaller to be rid of it.


    You should detach or unplug external devices not necessary in the troubleshooting of the Mini, then proceed to see if the report or condition changes. Could be a defective peripheral and not an internal component. Also, if you can't get past this matter, you may have to see about getting an appointment with a Genius or product specialist at an Apple Store, or authorized reseller with factory trained service staff.


    Good luck & happy computing!



  • lllaass Level 10 Level 10

    I suspect the memory. Do you have the old memory you can reinstall and see if you still have the problem?

    Was the new memory specifically identified  as being compatible with your Mini?

  • BDAqua Level 10 Level 10

    I suspect the pace thing myself.


    One way to test is to Safe Boot from the HD, (holding Shift key down at bootup), run Disk Utility in Applications>Utilities, then highlight your drive, click on Repair Permissions, Test for problem in Safe Mode...


    PS. Safe boot may stay on the gray radian for a long time, let it go, it's trying to repair the Hard Drive


    Reboot, test again.


    If it only does it in Regular Boot, then it could be some hardware problem like Video card, (Quartz is turned off in Safe Mode), or Airport, or some USB or Firewire device, or 3rd party add-on, Check System Preferences>Accounts (Users & Groups in later OSX versions)>Login Items window to see if it or something relevant is listed.


    Check the System Preferences>Other Row, for 3rd party Pref Panes.


    Also look in these if they exist, some are invisible...











  • rack0 tack0 Level 4 Level 4

    You certainley need to suspect the com.paceap.kext.pacesupport.snowleopard module, is there a later version?


    Otherwise follow BDAquas advice.

  • OutrageousPotato Level 1 Level 1

    Hello, did you ever get this issue resolved? I've been having the same exact problem on my 2009 iMac after upgrading the memory, and  the com.paceap.kext.pacesupport.snowleopard  5.9.1 kext is one others have suggested as a potential problem in my crash report as well. I don't even know what it is.

  • Drew Reece Level 5 Level 5

    Apps use 'reverse domain name notation', it's not difficult to see where they come from if the developer is filling out the fields correctly in Xcode.




    Pace is part of DRM/ anti piracy/ bs that is bundled with certain software. You would need to hunt through old receipts for an indication of what installed it.

    You may not need it, however if you run old software & just migrate to new OS's there is no telling how many old bits of code you need to work.