Yosemite random Crash - discoveryd_helper[147]: Basic RemoteControl com.apple.discoveryd_helper Starting XPC Server

I'm sure this won't help a lot of people however my problem tuned out to be my SSD. I passed the AHT (hardware test) and disk utility verify every time however it was picked up when I put it in at an apple authorised repairer. My crashes got progressively worse until I couldn't log in and then the SSD stopped being visible from the boot menu - which prompted me to put it in. just something to be mindful of if you do suspect your SSD.

I have (had?) the same problem. After months of using Yosemite without a problem I was suddenly getting frequent crashes. Sometimes multiple crashes within an hour. The only thing in the crash logs was the discoveryd_helper lines that tell me nothing. So I wanted to post my EtreCheck output here. While going through the results of EtreCheck I realised some old kernel extensions where still installed. Specifically AirDisplay (messes with the graphics output) and Boom 2 (messes with the audio output). So I removed these kernel extensions two days ago and did not have a single crash since (knocking on wood).

After weeks of apple support, Apple Engineering has diagnosed my problem to be with the Razer CPU chip on my Mac Pro. I'm currently having it replaced and will update if this fixes my issue.

I encourage you all to contact apple support regarding this. It may take awhile, but they should be able to help.

Best of luck.

Just a note that I've also been experiencing this issue (freeze with the same two lines noted in the crash logs as per the original post).

My situation is as follows:

• iMac 21.5 inch, Late 2013 model (purchased in October, 2014) with Yosemite 10.10.3, Fusion Drive, NVIDIA GeForce GT 750M
• Crashes occur once every 7 days (approximately).
• Crashes usually occur when the system is in screensaver mode, or the screen has gone dark; at least one crash occurred in normal usage mode (iTunes, Safari and Mail running).

I should also note that I brought this system in to be repaired at the Apple Store 6 months ago for crashes (an erase-and-install was done), but my logs indicate a different issue then. Crashes since February (dozens of them) all have the "Basic RemoteControl com.apple.discoveryd_helper Starting XPC Server" and "Detailed RemoteControl com.apple.discoveryd_helper XPC " lines indicated in the crash report.

This is surely some combination of hardware and software (Yosemite), as my MacBook Air never freezes (same version of Yosemite) and you would hear about this as a much more widespread issue otherwise.

I have decided to live with this issue for now (since it's intermittent), but it's very unfortunate. My previous iMac (2010 model) basically froze once every 2 years; this system freezes more or less weekly.

I installed the 10.10.4 update on June 30th, and I haven't had any crashes since then...Normally it's rare to get 4 days out of a single boot without a crash. Not calling it fixed yet though by any means...will chime back in if anything else happens or changes.

I'm on 10.10.4 and still getting kernel panics today.

It's really disappointing that Apple has let this go on for so long. I feel like i'm back on Windows with all this crashing.

Mattbell3: If your specific issue is a Kernel Panic, you NEED to take your computer to an Apple Store and then have them wipe it (You must back it up before that) and if that doesn't work then you have to have a logic board replacement. It can be quite costly without apple care I'm afraid. If neither of those work they should replace your computer. This wont work for anyone on this forum if it is the other problem. Make sure it is a kernel panic. Those are devastating. I had them on my MacBook Pro about 2 years ago and it wouldn't stay running for even 5 minutes. It took them 7 trips in 24 hours to 2 stores. I was just happy they replaced it in the end.

I don't think you are having the same issue as me (and most of us I believe..?) if you are getting actual kernel panics. For me, it would not kernel panic -- it would hang, crash, and then reboot itself with nothing in the logs except the stuff about discoveryd helper / XPC server.

Perhaps I didn't describe the problem properly. The system freezes then a grey screen with some writing appears, then the system reboots. I thought this was a kernel panic. The crash log contains the same discoveryd error everyone else is getting. It's happening on 2 different 2010 Mac mini machines so I don't think it's hardware. I reformatted one of the machines and still have the same problem.

The process described is a kernel panic and needs to be addressed soon. I recommend seeing apple about it and trying to replace the boards. If you are skilled enough you might try iFixit to save a few bucks...

I'm not sure I'm understanding your logic. If I'm having the same issue on 2 Mac minis wouldn't it be more likely a software issue? Why do you suspect the logic board? Perhaps I'm missing something?

Interesting -- you ARE getting a kernel panic (KP is the grey screen that says in multiple languages "our crap software has failed you need to reboot your computer" or something along those lines 😝) -- ignore the dude saying it's a hardware issue...it probably isn't. I'd bet 95% of the issues related to this are software problems, NOT hardware, but due to the crap logging and debug capabilities of OS X, two same exact root causes can have identical symptoms and identical log messages -- i.e. someone with a messed up logic board can have the exact same log messages and crashes that someone with a perfectly fine logic board has.

Can you post your KP log on paste bin? I'd like to take a look at it. BTW, I hate to chime in once again, but I'm still going strong here on 10.10.4 -- no issues whatsoever after updating. I can not believe my uptime 🙂

I'm not familiar with paste bin. Looks like I need an account to use it. I'll paste it here and hopefully that's ok.

Mon Jun 29 00:09:36 2015

*** Panic Report ***

panic(cpu 2 caller 0xffffff800f9fede2): "Possible memory corruption: pmap_pv_remove(0xffffff802ef1b110,0x7fff7c442000,0x454038, 0x8000000454038024, 0xfffffea3404c6210): empty hash"@/SourceCache/xnu/xnu-2782.20.48/osfmk/i386/pmap_internal.h:822

Backtrace (CPU 2), Frame : Return Address

0xffffff81f9f5ba70 : 0xffffff800f92bda1

0xffffff81f9f5baf0 : 0xffffff800f9fede2

0xffffff81f9f5bbe0 : 0xffffff800f9ff645

0xffffff81f9f5bc40 : 0xffffff800f9ad505

0xffffff81f9f5bd50 : 0xffffff800f9a319c

0xffffff81f9f5bd80 : 0xffffff800f94e637

0xffffff81f9f5bdc0 : 0xffffff800fdc1d49

0xffffff81f9f5be30 : 0xffffff800fdd9572

0xffffff81f9f5beb0 : 0xffffff800fdd9a47

0xffffff81f9f5bef0 : 0xffffff800f9282d6

0xffffff81f9f5bf20 : 0xffffff800fa1843e

0xffffff81f9f5bf40 : 0xffffff800fa34b3f

BSD process name corresponding to current thread: diskarbitrationd

Boot args: kext-dev-mode=1

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: 0x000000000f600000

Kernel text base: 0xffffff800f800000

__HIB text base: 0xffffff800f700000

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

System uptime in nanoseconds: 19621061952869

last loaded kext at 12597235666776: com.apple.driver.AppleUSBCDC 4.3.3b1 (addr 0xffffff7f92213000, size 20480)

last unloaded kext at 12657292901705: com.apple.driver.AppleUSBCDC 4.3.3b1 (addr 0xffffff7f92213000, size 16384)

loaded kexts:

com.apple.filesystems.smbfs 3.0.1

com.apple.filesystems.afpfs 11.0

com.apple.nke.asp-tcp 8.0.0

com.apple.nke.l2tp 1.9

com.apple.driver.AppleBluetoothMultitouch 85.3

com.apple.driver.AudioAUUC 1.70

com.apple.filesystems.autofs 3.0

com.apple.driver.ApplePlatformEnabler 2.2.0d4

com.apple.driver.AGPM 110.19.5

com.apple.driver.X86PlatformShim 1.0.0

com.apple.iokit.SCSITaskUserClient 3.7.5

com.apple.iokit.IOBluetoothSerialManager 4.3.4f4

com.apple.driver.AppleOSXWatchdog 1

com.apple.driver.AppleMikeyHIDDriver 124

com.apple.driver.AppleUpstreamUserClient 3.6.1

com.apple.driver.AppleHDA 272.18

com.apple.driver.AppleMCCSControl 1.2.11

com.apple.driver.AppleMikeyDriver 272.18

com.apple.iokit.IOUserEthernet 1.0.1

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.AppleHV 1

com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport 4.3.4f4

com.apple.driver.AppleSMCPDRC 1.0.0

com.apple.driver.AppleLPC 1.7.3

com.apple.driver.AppleIntelFramebufferCapri 10.0.6

com.apple.driver.AppleIntelSlowAdaptiveClocking 4.0.0

com.apple.driver.AppleThunderboltIP 2.0.2

com.apple.driver.AppleIRController 327.5

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.AppleFWOHCI 5.5.2

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.security.SecureRemotePassword 1.0

com.apple.nke.ppp 1.9

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.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.IOSCSIBlockCommandsDevice 3.7.5

com.apple.iokit.IOSerialFamily 11

com.apple.iokit.IOUSBMassStorageClass 3.7.2

com.apple.driver.DspFuncLib 272.18

com.apple.kext.OSvKernDSPLib 1.15

com.apple.iokit.IOSurface 97.4

com.apple.driver.AppleSMBusController 1.0.13d1

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.AppleSMC 3.1.9

com.apple.driver.IOPlatformPluginFamily 5.9.1d7

com.apple.iokit.IOFireWireIP 2.2.6

com.apple.driver.AppleSMBusPCI 1.0.12d1

com.apple.iokit.IOUSBUserClient 705.4.0

com.apple.iokit.IOAcceleratorFamily2 156.14

com.apple.AppleGraphicsDeviceControl 3.10.22

com.apple.iokit.IONDRVSupport 2.4.1

com.apple.iokit.IOGraphicsFamily 2.4.1

com.apple.iokit.IOSlowAdaptiveClockingFamily 1.0.0

com.apple.iokit.IOSCSIArchitectureModelFamily 3.7.5

com.apple.iokit.IOUSBHIDDriver 705.4.0

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.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.IOFireWireFamily 4.5.6

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.iokit.IOHIDFamily 2.0.0

com.apple.driver.AppleEFIRuntime 2.0

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.corecrypto 1.0

com.apple.kec.Libm 1

com.apple.kec.pthread 1

System Profile:

AirPort: spairport_wireless_card_type_airport_extreme (0x14E4, 0x10E), Broadcom BCM43xx 1.0 (7.15.166.24.3)

Bluetooth: Version 4.3.4f4 15601, 3 services, 27 devices, 1 incoming serial ports

Thunderbolt Bus: Mac mini, Apple Inc., 23.4

Memory Module: BANK 0/DIMM0, 8 GB, DDR3, 1600 MHz, 0x859B, 0x435438473353313630424D2E4D3136464444

Memory Module: BANK 1/DIMM0, 8 GB, DDR3, 1600 MHz, 0x859B, 0x435438473353313630424D2E4D3136464444

USB Device: External USB 3.0

USB Device: 4-Port USB 3.0 Hub

USB Device: Hub

USB Device: iPhone

USB Device: Hub

USB Device: Hub

USB Device: IR Receiver

USB Device: BRCM20702 Hub

USB Device: Bluetooth USB Host Controller

USB Device: USB2.0 Hub

USB Device: MT1956

USB Device: CRCA102-3I1

Serial ATA Device: Samsung SSD 840 PRO Series, 256.06 GB

Serial ATA Device: APPLE HDD HTS541010A9E662, 1 TB

Model: Macmini6,2, BootROM MM61.0106.B03, 4 processors, Intel Core i7, 2.6 GHz, 16 GB, SMC 2.8f0

Network Service: Ethernet, Ethernet, en0

Network Service: Wi-Fi, AirPort, en1

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

Thanks for posting your KP log -- just an FYI, anyone can post at pastebin as a guest; you don't need to sign up or create a login there, it just keeps the forum here less cluttered, as there are already so many posts, it's often very hard to read, esp. if you are a newcomer and trying to sift through all the information, and get to the good stuff (i.e. how to solve your issue!) 🙂 But I'm not a forum moderator and I don't play one on TV, so I don't really care 😝

You have the same GPU as me, also interesting (Iris 4000), and you have the quad core mac mini from 2012 -- neat, I want a few of those! Supposed to be actually faster than the current Mac Minis due to only dual core models being available (faster at multi-core tasks).

Nothing stands out in your KP log, unfortunately -- memory corruption in diskarb'd -- *might* be storage, networking (network filesystem, were you using SMB or AFP prior to the crash?) or even USB related, but who knows.

I did notice though, that you currently have kext signing disabled (kext-dev-mode=1 in your boot args) -- is there any reason for this?

The only other thing I can suggest is that I see you're running 10.10.3 right now -- try software update and install 10.10.4, if you are able to, and as always, if you do update, make a backup that you can revert to if need be, of your system right now -- with 10.10.3

Update on my end:

After months of troubleshooting, Apple has replaced my machine. So far no crashes.