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

Well, I'm happy(ish) to report that I found the cause of my crashes. The HDD was dropping out (disconnecting from and completely unseen by the system until reboot). Understandably, storage volumes do not react well to 66% of their media disappearing all of a sudden. I found this by splitting up my Fusion Drive, and installing onto the SSD. I had my user folder on the HDD, so when it dropped, the applications and parts of the OS that know how to run without the contents of the user folder kept running fine while others crashed, hung, or complained.

So at least in my case, the log messages I was seeing were a red herring - just the dying gasp of applications that were crashing just like everything else was. I suspect the shop that installed my SSD made some mistakes (so much for saving time by having someone else do it).

Obviously not everyone here is running a Fusion Drive, so that's not going to be the universal cause. For those still having trouble, go through systematically to eliminate variables. Just because your machine doesn't crash while running a different OS, doesn't mean the problem is with Yosemite. (Unless you're running a 100% Snow White Yosemite install with all original hardware in which case... well, it still could be a hardware failure that doesn't rear it's head under an earlier OS). "Random" crashes aren't really random, they're just caused by something we haven't found yet.

I am reporting back after a week. My problem seemed to be with the original ram that came with my 2008 (3,1) MacPro 8 core. I removed it and problem resolved as mentioned in my earlier post.

Thanks for this post tanjucat. After performing an extended AHT on my 2008 (3,1) MacPro everything checked out. I also found it a strange coincidence that my Mac Pro was crashing since Yosemite 10.10. I decided to play around with my RAM. My configuration was as follows:

2 x 1GB Kingston RAM (original apple ram) in the Upper Tray Slot 1 and 2.

2 x 2GB Ram Crucial matched pair in Upper tray slots 3 and 4

2 x 2GB Ram Crucial matched pair in Bottom tray slots 1 and 2

For a total of 10 GB or ram. I removed my oldest Kingston Ram which originally came with my MacPro and placed all my Crucial Ram in the upper tray against apple's reccommendations .

My mac no longer crashes. I plan to buy more Crucial Ram and see if I encounter the same once I fill up the bottom tray .

Hi folks,

I had the same problem like you have.

I had up to five system crashes a day with the same crash reports.

I solved the problem in the following way:

I installed ccleaner for mac.

I went to extras, then to startup and I cancelled all the hidden programs and services, wick are not really necessary. Only the startup programs, which are necessary, I didn't cancel.

Since this action my system runs without any problems, it's stable and I din't have any system crashes.

Notice: When I start VMware fusion, (for using windows), I have a crash within a few seconds. I'll kill that ****** ******' program!

I hope, you will have a success with my hints.

Good luck!

I have exactly the same, happened multiple times today in a row.

kernel panic > reboot > a few seconds after reboot > crash and reboot automatically

Apr 18 18:23:28.937802 Mac-miniba.local discoveryd_helper[175]: Basic RemoteControl com.apple.discoveryd_helper Starting XPC Server

Apr 18 18:23:28.938211 Mac-miniba.local discoveryd_helper[175]: Detailed RemoteControl com.apple.discoveryd_helper XPC connection 0x7f87dac02dd0: start (pid=49, <unknown> not root)

Apr 18 19:10:21.867475 Mac-miniba.local discoveryd_helper[162]: Basic RemoteControl com.apple.discoveryd_helper Starting XPC Server

Apr 18 19:10:21.867971 Mac-miniba.local discoveryd_helper[162]: Detailed RemoteControl com.apple.discoveryd_helper XPC connection 0x7fed71e00570: start (pid=49, <unknown> not root)

Apr 18 19:12:48.020918 Mac-miniba.local discoveryd_helper[168]: Basic RemoteControl com.apple.discoveryd_helper Starting XPC Server

Apr 18 19:12:48.021365 Mac-miniba.local discoveryd_helper[168]: Detailed RemoteControl com.apple.discoveryd_helper XPC connection 0x7fede0601f70: start (pid=49, <unknown> not root)

Apr 18 19:19:09.362927 Mac-miniba.local discoveryd_helper[175]: Basic RemoteControl com.apple.discoveryd_helper Starting XPC Server

Apr 18 19:19:09.363466 Mac-miniba.local discoveryd_helper[175]: Detailed RemoteControl com.apple.discoveryd_helper XPC connection 0x7fbd1bb002e0: start (pid=49, <unknown> not root)

Apr 18 19:26:51.629034 Mac-miniba.local discoveryd_helper[167]: Basic RemoteControl com.apple.discoveryd_helper Starting XPC Server

Apr 18 19:26:51.629445 Mac-miniba.local discoveryd_helper[167]: Detailed RemoteControl com.apple.discoveryd_helper XPC connection 0x7ff229d00620: start (pid=49, <unknown> not root)

Apr 18 19:33:18.638406 Mac-miniba.local discoveryd_helper[163]: Basic RemoteControl com.apple.discoveryd_helper Starting XPC Server

Apr 18 19:33:18.638815 Mac-miniba.local discoveryd_helper[163]: Detailed RemoteControl com.apple.discoveryd_helper XPC connection 0x7fca8ac00410: start (pid=49, <unknown> not root)

Apr 18 19:42:08.038300 Mac-miniba.local discoveryd_helper[162]: Basic RemoteControl com.apple.discoveryd_helper Starting XPC Server

Apr 18 19:42:08.038809 Mac-miniba.local discoveryd_helper[162]: Detailed RemoteControl com.apple.discoveryd_helper XPC connection 0x7ff603603790: start (pid=49, <unknown> not root)

Apr 18 19:44:47.969944 Mac-miniba.local discoveryd_helper[163]: Basic RemoteControl com.apple.discoveryd_helper Starting XPC Server

Apr 18 19:44:47.970426 Mac-miniba.local discoveryd_helper[163]: Detailed RemoteControl com.apple.discoveryd_helper XPC connection 0x7fd55c800400: start (pid=49, <unknown> not root)

Yosemite is totally unstable it's sooooo annoying. I normally let the other debug but I thought it would be fine now...

LAst update: 10.10.3 : Again crashes same day i updated...

i installed ccleaner for Mac its free. I found one unidentified startup program will post if this fixes the problem.

my logs are the same Apr 17 16:13:27.212093

Basic RemoteControl com.apple.discoveryd_helper Starting XPC Server

Detailed RemoteControl com.apple.discoveryd_helper XPC connection

Hard/Soft

MacBookAir6,2 Intel Core i7 1.7 GHz

Darwin blade 14.3.0 Darwin Kernel Version 14.3.0: Mon Mar 23 11:59:05 PDT 2015; root:xnu-2782.20.48~5/RELEASE_X86_64 x86_64

What i have done so far:

1. Verify Disk utility First Aid "Verify Permissions"

2. Stopped using TimeMachine, (TimeMachine runs over the network via afp bonjour) Believe this could be the issue, since The timemachine backup was erased, and is not communicating.

3. Ran the ccleaner tool per the post. Will updated if the crashes stop. I am on my 12th crash in four days. Only began in the last 4 days.

I did the file permissions on bootup (by using the option key) and it didn't solve anything.

I don't use Time Machine (I use Arq and SuperDuper instead but I doubt they did anything at startup).

Do you have multiple USB drives connected ? I have 3 and wonder if that can be the cause.

Cheers,

******************************Solved with Explanation**********************************************

Per Josef4321 ccleaner works.

Why?

XPC is making calls to downloaded folders files that are no longer current, if these are large files, the XPC app as a security measure will stop if they don't see them. So recently I downloaded several large .iso's. So by running the ccleaner tool, which deleted my:

Internet cache

internet history

cookies

download history and a few other items.

The XPC app headers that are mapped in the cache are deleted so they are not making calls to Phantom data.

I believe that people with iTunes or TimeMachine may have similar crashes because XPC works with them in a security manner, and if you have large files such as itunes, or iphoto, etc the same result can happen.

*****************************Crash Free*************************************************************

Check out this article on Developer for more info on XPC, happy computing.

http://www.objc.io/issue-14/xpc.html

One Step I did not add, when running ccleaner go to 'tools' in the side menu, & startup (this step is mentioned with user, Josef4321)

Remove any startup service that you do not need.

*************************************************Still running crash free****************************************

Well the ccleaner stuffs didn't work for me (both cleaning the cache and also verifying the startup programs), this morning again a crash:

Apr 22 11:08:32.855945 Mac-miniba.local discoveryd_helper[178]: Basic RemoteControl com.apple.discoveryd_helper Starting XPC Server

Apr 22 11:08:32.856441 Mac-miniba.local discoveryd_helper[178]: Detailed RemoteControl com.apple.discoveryd_helper XPC connection 0x7fc8920003d0: start (pid=73, <unknown> not root)

Apr 22 12:19:42.253049 Mac-miniba.local discoveryd_helper[182]: Basic RemoteControl com.apple.discoveryd_helper Starting XPC Server

Apr 22 12:19:42.253578 Mac-miniba.local discoveryd_helper[182]: Detailed RemoteControl com.apple.discoveryd_helper XPC connection 0x7fb192900000: start (pid=73, <unknown> not root)

I can't believe Apple doesn't fix this, my Mac is USELESS right now and I may have to revert back to Moutain Lion... a crash every other day is NOT ACCEPTABLE when used in a professionnal environment

Hi,

what helped me in the end was uninstalling my virus scanner - which I have not yet switched back on. By the time I figured that, I reset all the transient RAM, switched my scheduled reboot off, had multiple reboots into safe mode, disconnected and reconnected my USB devices, updated jbridge kernel extension that gave some errors during boot, and finally reloaded the OS X from the recovery disk. I have run the MAC since then 24/7 and not a single crash - about three weeks ago.

Also, I have switched verbose boot on, so I can see the messages during boot and since latest OS release the hardware error messages have disappeared and it's looking quite ok now. Keeping my fingers crossed

Kind regards

Andreas

Me temo que... Apple está alejándose del mundo profesional. Está quedando relegado a los 'guays'. Antes también, pero al menos eran eficaces herramientas de trabajo. Hoy día, su fiabilidad está bajo mínimos. Una pena.

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