DHCP service randomly stopping, when restarted scopes disappear

I have DHCP and DNS running on two OS X 10.5.7 servers; one is a G5 dual 1.8 Ghz PPC and the other is a 2.8 Ghz quad-core Intel Xserve. This summer I've added VLAN scopes (staff and student wired & wireless) with half the available addresses in each subnet on one server and the other half on the other. An odd thing has happened several times now. The DHCP service will randomly shut down and when I restart it, the new scopes have all disappeared and the old scope is back as the only choice on the list, but not enabled. When I go to check the other server I find the same thing. I thought it was just a fluke the first time it happened and just imported the DHCP settings back in from a backup. It has happened two more times since then, about once a week. If anyone can shed some light on this I'd appreciate it.

I too am having this issue.
DHCP service will crash (after investigation I found that it was servermgrd that crashes) all the scopes are still there, then when I restart the service it wipes out all my scopes except the default one that is in there when you initially configure the service.
Everything goes haywire, DNS seems to go down halfway, then I put the scopes back in, and at least DHCP rights itself.
This is a serious issue, I have 5 scopes in this server. I also have one other server that only has one scope, but does not have this issue.
All running 10.5.6 Server on Intel Xserves.
Here is part of my crash log:
Process: servermgrd [41823]
Path: /usr/sbin/servermgrd
Identifier: servermgrd
Version: ??? (???)
Code Type: X86 (Native)
Parent Process: launchd [1]
Date/Time: 2009-08-08 13:29:02.314 -0700
OS Version: Mac OS X Server 10.5.6 (9G71)
Report Version: 6
Exception Type: EXCBADACCESS (SIGSEGV)
Exception Codes: KERNINVALIDADDRESS at 0x00000000dc45897b
Crashed Thread: 7
Thread 0:
0 libSystem.B.dylib 0x937851c6 machmsgtrap + 10
1 libSystem.B.dylib 0x9378c9bc mach_msg + 72
2 com.apple.CoreFoundation 0x940960ae CFRunLoopRunSpecific + 1790
3 com.apple.CoreFoundation 0x94096cd8 CFRunLoopRunInMode + 88
4 com.apple.Foundation 0x960e5d75 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 213
5 com.apple.Foundation 0x9616434d -[NSRunLoop(NSRunLoop) runUntilDate:] + 93
6 libservermgrcommon.dylib 0x0007b251 __XSCopyIGDDescriptor + 660
7 libservermgrcommon.dylib 0x0007b4ca XSUpdateIGDCache + 238
8 libservermgrcommon.dylib 0x0007b587 PortmapMaintenance + 84
9 ...rverAdmin.servermgr_network 0x0044d814 doProcessArgs + 84
10 libservermgrcommon.dylib 0x0007981e -[BundleManager doIdle] + 649
11 com.apple.Foundation 0x960e5e23 __NSFireTimer + 147
12 com.apple.CoreFoundation 0x94096b25 CFRunLoopRunSpecific + 4469
13 com.apple.CoreFoundation 0x94096cd8 CFRunLoopRunInMode + 88
14 com.apple.Foundation 0x960e5d75 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 213
15 com.apple.Foundation 0x960f1e94 -[NSRunLoop(NSRunLoop) run] + 84
16 servermgrd 0x00005937 0x1000 + 18743
17 servermgrd 0x00002b2a 0x1000 + 6954
Thread 1:
0 libSystem.B.dylib 0x937d46f2 select$DARWIN_EXTSN + 10
1 libSystem.B.dylib 0x937b6095 pthreadstart + 321
2 libSystem.B.dylib 0x937b5f52 thread_start + 34
Thread 2:
0 libSystem.B.dylib 0x937851c6 machmsgtrap + 10
1 libSystem.B.dylib 0x9378c9bc mach_msg + 72
2 com.apple.CoreFoundation 0x940960ae CFRunLoopRunSpecific + 1790
3 com.apple.CoreFoundation 0x94096cd8 CFRunLoopRunInMode + 88
4 com.apple.Foundation 0x96114d40 +[NSURLConnection(NSURLConnectionReallyInternal) _resourceLoadLoop:] + 320
5 com.apple.Foundation 0x960b17ed -[NSThread main] + 45
6 com.apple.Foundation 0x960b1394 _NSThread__main_ + 308
7 libSystem.B.dylib 0x937b6095 pthreadstart + 321
8 libSystem.B.dylib 0x937b5f52 thread_start + 34
Thread 3:
0 libSystem.B.dylib 0x9378c3ae _semwaitsignal + 10
1 libSystem.B.dylib 0x937e1e71 sleep$UNIX2003 + 63
2 servermgrd 0x00005d4f 0x1000 + 19791
3 com.apple.Foundation 0x960b17ed -[NSThread main] + 45
4 com.apple.Foundation 0x960b1394 _NSThread__main_ + 308
5 libSystem.B.dylib 0x937b6095 pthreadstart + 321
6 libSystem.B.dylib 0x937b5f52 thread_start + 34
Thread 4:
0 libSystem.B.dylib 0x93785226 semaphoretimedwait_signaltrap + 10
1 libSystem.B.dylib 0x937b71ef pthread_condwait + 1244
2 libSystem.B.dylib 0x937b8a73 pthreadcond_timedwait_relativenp + 47
3 com.apple.Foundation 0x960f775c -[NSCondition waitUntilDate:] + 236
4 com.apple.Foundation 0x960f7570 -[NSConditionLock lockWhenCondition:beforeDate:] + 144
5 libservermgrcommon.dylib 0x00078953 -[BundleManager doBatchCommand:forUser:] + 715
6 servermgrd 0x00007b42 0x1000 + 27458
7 servermgrd 0x00006ebd 0x1000 + 24253
8 servermgrd 0x00006213 0x1000 + 21011
9 com.apple.Foundation 0x960b17ed -[NSThread main] + 45
10 com.apple.Foundation 0x960b1394 _NSThread__main_ + 308
11 libSystem.B.dylib 0x937b6095 pthreadstart + 321
12 libSystem.B.dylib 0x937b5f52 thread_start + 34
Thread 5:
0 com.apple.CoreFoundation 0x94099009 CFEqual + 25
1 com.apple.CoreFoundation 0x9409aa65 __CFSetFindBuckets2 + 293
2 com.apple.CoreFoundation 0x9409be18 CFSetAddValue + 360
3 com.apple.CoreFoundation 0x94089e71 _uniqueStringForCharacters + 417
4 com.apple.CoreFoundation 0x9408a289 getString + 825
5 com.apple.CoreFoundation 0x9408e4bb parseXMLElement + 5515
6 com.apple.CoreFoundation 0x9408f653 parseDictTag + 147
7 com.apple.CoreFoundation 0x9408dcb5 parseXMLElement + 3461
8 com.apple.CoreFoundation 0x9408d8f0 parseXMLElement + 2496
9 com.apple.CoreFoundation 0x9408eea2 _CFPropertyListCreateFromXMLData + 2402
10 com.apple.Foundation 0x96102fb2 +[NSPropertyListSerialization propertyListFromData:mutabilityOption:format:errorDescription:] + 66
11 com.apple.servermgr_dhcp 0x0024563f -[DHCPRequestHandler writeConfigurationFile] + 320
12 com.apple.servermgr_dhcp 0x002454f4 -[DHCPRequestHandler readConfigurationFile] + 3447
13 com.apple.servermgr_dhcp 0x00241f7c -[DHCPRequestHandler getStateWithRequest:] + 244
14 libservermgrcommon.dylib 0x00077414 -[PluginRequestHandler doProcessInputWithRequest:context:lockFileFD:] + 315
15 libservermgrcommon.dylib 0x000791c0 -[BundleManager doCommand:withModule:forUser:] + 905
16 libservermgrcommon.dylib 0x00078ba7 -[BundleManager doOneBatchCommand:] + 448
17 com.apple.Foundation 0x960b17ed -[NSThread main] + 45
18 com.apple.Foundation 0x960b1394 _NSThread__main_ + 308
19 libSystem.B.dylib 0x937b6095 pthreadstart + 321
20 libSystem.B.dylib 0x937b5f52 thread_start + 34
Thread 6:
0 com.apple.CoreFoundation 0x940c6e3e __CFStrConvertBytesToUnicode + 62
1 com.apple.CoreFoundation 0x940b7397 CFStringFindCharacterFromSet + 743
2 com.apple.Foundation 0x960f249c -[NSString rangeOfCharacterFromSet:options:range:] + 108
3 com.apple.Foundation 0x96135ae9 -[NSScanner scanCharactersFromSet:intoString:] + 297
4 ...e.ServerAdmin.servermgr_web 0x01dddb40 doProcessArgs + 4517
5 ...e.ServerAdmin.servermgr_web 0x01dddda4 doProcessArgs + 5129
6 ...e.ServerAdmin.servermgr_web 0x01dfaccf doProcessArgs + 123700
7 libservermgrcommon.dylib 0x000582e0 -[ConfigurationParser initWithFile:typesFile:defaultsFile:populateDefaults:] + 174
8 ...e.ServerAdmin.servermgr_web 0x01dfa0b5 doProcessArgs + 120602
9 ...e.ServerAdmin.servermgr_web 0x01dfdab7 doProcessArgs + 135452
10 ...e.ServerAdmin.servermgr_web 0x01dfd8c1 doProcessArgs + 134950
11 ...e.ServerAdmin.servermgr_web 0x01dd2edc getservicestate + 322
12 ...e.ServerAdmin.servermgr_web 0x01ddb81b doProcessInput + 560
13 ...e.ServerAdmin.servermgr_web 0x01ddccaa doProcessArgs + 783
14 libservermgrcommon.dylib 0x000791c0 -[BundleManager doCommand:withModule:forUser:] + 905
15 libservermgrcommon.dylib 0x00078ba7 -[BundleManager doOneBatchCommand:] + 448
16 com.apple.Foundation 0x960b17ed -[NSThread main] + 45
17 com.apple.Foundation 0x960b1394 _NSThread__main_ + 308
18 libSystem.B.dylib 0x937b6095 pthreadstart + 321
19 libSystem.B.dylib 0x937b5f52 thread_start + 34
Thread 7 Crashed:
0 libobjc.A.dylib 0x9512f688 objc_msgSend + 24
1 ....ServerAdmin.servermgr_info 0x0038465e 0x37d000 + 30302
2 ....ServerAdmin.servermgr_info 0x0037e431 0x37d000 + 5169
3 libservermgrcommon.dylib 0x000791c0 -[BundleManager doCommand:withModule:forUser:] + 905
4 libservermgrcommon.dylib 0x00078ba7 -[BundleManager doOneBatchCommand:] + 448
5 com.apple.Foundation 0x960b17ed -[NSThread main] + 45
6 com.apple.Foundation 0x960b1394 _NSThread__main_ + 308
7 libSystem.B.dylib 0x937b6095 pthreadstart + 321
8 libSystem.B.dylib 0x937b5f52 thread_start + 34
Thread 7 crashed with X86 Thread State (32-bit):
eax: 0x9511e861 ebx: 0x00380c61 ecx: 0x951aaa64 edx: 0xdc45895b
edi: 0x00000000 esi: 0xa016e180 ebp: 0xb06dc958 esp: 0xb06dc7f8
ss: 0x0000001f efl: 0x00010282 eip: 0x9512f688 cs: 0x00000017
ds: 0x0000001f es: 0x0000001f fs: 0x0000001f gs: 0x00000037
cr2: 0xdc45897b
Binary Images:
0x1000 - 0x10ff7 +servermgrd ??? (???) <6d1e5419c0bf1ad43ef3c5189228f0ad> /usr/sbin/servermgrd
0x51000 - 0x84ff7 libservermgrcommon.dylib ??? (???) <ee8fb2c333b268482f4fc7b7b79634fc> /usr/lib/libservermgrcommon.dylib
0xa2000 - 0xc5ff7 com.apple.frameworks.server.core 1.0 (1.0) <352102e4e062c441fd0be0d6d4bc7305> /System/Library/PrivateFrameworks/CoreServer.framework/Versions/A/CoreServer
0xd3000 - 0xe5ffd com.apple.servermgr_accounts 10.5.3 (10.5.3) /usr/share/servermgrd/bundles/servermgraccounts.bundle/Contents/MacOS/servermgraccounts
0xef000 - 0xf6fff com.apple.ServerAdmin.servermgr_afp 10.5 (2.0) <a27c4a92067e344cedd93dd2ff7b6231> /usr/share/servermgrd/bundles/servermgrafp.bundle/Contents/MacOS/servermgrafp
0x200000 - 0x20ffff com.apple.frameworks.server.foundation 1.0.2 (1.0.2) <0acc9dd1e8a8e9f694a431b609bc2225> /System/Library/PrivateFrameworks/ServerFoundation.framework/Versions/A/ServerF oundation
0x22a000 - 0x22fffd com.apple.servermgr_backup 10.5 (10.5) /usr/share/servermgrd/bundles/servermgrbackup.bundle/Contents/MacOS/servermgrbackup
0x236000 - 0x23afff com.apple.ServerAdmin.servermgr_calendar 10.5 (10.5) <389fb095464da73d3023f9136ce3be04> /usr/share/servermgrd/bundles/servermgrcalendar.bundle/Contents/MacOS/servermgrcalendar
0x241000 - 0x24affc com.apple.servermgr_dhcp 10.5.3 (10.5.3) <268b1327d65be8ef780416f8396f3f1c> /usr/share/servermgrd/bundles/servermgrdhcp.bundle/Contents/MacOS/servermgrdhcp

Similar Messages

After upgrading, videos randomly stop and restart.

Since upgrading to iTunes 10 purchased videos of TV shows randomly stop and restart. I've had these videos for years and never had a problem, but now every time I watch an episode it sill get around 5 minutes in and spontaneously start the episode over. Anyone else having these problems?

Hi Fabrizio,
why do you want to reboot your server every sunday?????
If you reboot your SAP this often, you'll have performance problems every Monday. All
of your SAP internal Buffers must be filled again after an reboot. If your DB is on the
same Host, also your DB Buffer is empty.
If this is an productive System, i highly recommend you that you not reboot your SAP System this often....
(By side, thats the difference between an *nix and an Windows System.).
What is the reason for doing that?
confused
Regards Manuel

K8t800 onboard sound randomly stops until restart

my onboard sound seems to randomly stop working at times.
my 5.1 speakers have a power/volume knob that clicks the power off when you turn the knob all the way down.
the only consistency i've found is that sometimes i'll turn the volume all the way down, but stop before actually turning the speakers off.
then i'll go away for a while and come back to a computer with absolutely no audio.
i don't think the problem is with the speakers, because i can reboot and my sound comes back. i've also tried cycling power on the speakers via the power switch and also unplugging the whole system.
i've never been listening to music and then had the sound go out. it only happens when i leave the computer for a while and then come back.
my only guess is the gnomes that live under my desk are playing tricks on me.

I consulted my grandmother on this one. She said the gnomes could be unhappy. U need to leave some oatmeal on the floor for them to eat. This could make them stop sabotaging ur computer
Anywayz,
I do think it is ur sound system. My subwoofer turns off when I don't use it, or when the sound is very faint.
It switches itself on again when it is feeded louder sounds.
Subwoofers use power doing nothing, so I gues it is a usefull feature.

Reg: Oracle service is stopping when i am running a query

Hi...
I wrote a query with a cast function and a simple inner join on user defined tables,
and when i am executing the query i am getting the error message ORA-12500.
when i checked in the services ,my oracle service got stopped.
Can anyone tell me why this is happening???
Version : Oracle 10g
Message was edited by:
user642904

12500, 00000, "TNS:listener failed to start a dedicated server process"
// *Cause: The process of starting up a dedicated server process failed.
// The executable could not be found or the environment may be set up
// incorrectly.
// *Action: Turn on tracing at the ADMIN level and reexecute the operation.
// Verify that the ORACLE Server executable is present and has execute
// permissions enabled. Ensure that the ORACLE environment is specified
// correctly in LISTENER.ORA. The Oracle Protocol Adapter that is being
// called may not be installed on the local hard drive. Please check that
// the correct Protocol Adapter are successfully linked.
// If error persists, contact Oracle Customer Support.The listener only starts a dedicated server process when servicing a client request. So I fail to see how your SQL ("with simple inner joins") will somehow reconnect to the listener. Unless you are use loopback database links?
Also, do not confuse symptoms as all relating to the same problem.
Exactly what are the sequence of events that results in the error? What client are you using? How does it connect (TCP or IPC)? If TCP, does it use a dedicated or shared server? Are there any related errors in the alert log? Is there a trace file created for your session? What is the exact o/s and Oracle versions you are using?

DHCP service suddenly stopped.

Hi,
Title is the main concern. We have 700 windows machines and windows 2008 DHCP server. All 700 windows machines are in domain. we have also configured SCCM.
from 17th Mar 2015 DHCP client suddenly stopped onto client machine and whenever we wanted to start Access is denied message is appearing.
Till we are not getting the root cause of above scenario. Please help and provide solution.
We checked all permission from registry editor.

1. Run services.msc as admin and try to start it.
2. check the password changes for the service account the dhcp client is using.
Thanks and Regards Mohamed

Why T400 always randomly hangs when restart, shutdown and sleep??

I'm a student. I used to open a lot of pdf, website, word. I need to spend a lot of time to adjust those software. so, generally, I just use the sleep mode. when I left the T400 a moment, the laptop will switch to the sleep mode. but I found the laptop usually hangs. I have to press the power button to shutdown it and lost all of working. It happend many times. which upset me. I have google a lot of website, but nothing is usefull---update driver, OS,active the security chip, anything.... which also happened randomly, sometimes it's stable, sometimes it happened 2 times during one hours..
.anybody can help me??? thanks.
The OS is vista 32. update all drivers and hotfix.
Message Edited by enjoytp on 01-09-2009 06:51 AM
Message Edited by enjoytp on 01-09-2009 03:23 PM

Texas Mac Mans battery tutorial may help you.
Also, Try using Disk Utility to repair your startup disk (hard drive) as shown in Dr.Smokes Resolving Disk, Permission, and Cache Corruption.
Cheers!
DALE
p.s. If you still have problems after those, post back!

Sap sid _00 service is stopped while the production server is started.

while i try to start the sap production server, sapprd_00 service is stopped.
when i try to start the service manually. it gives a message saying,
"the service sapprd_00 started and stopped since it has no work to do"
can any body help me with this issue
Ravi
Yadutech
Basis Consultant

Hi Yadutech,
First start sapprd_00 manually with automatic properties.
then try to your sap production server.
Hopt it helps
Regards,
Arun

Urgent! DHCP service stop, server lose its IP...

Hi all,
I have a serious problem:
My Macmini Server (late 2010) firstly suddened stop lease IPs event I restart Macmini, restart DHCP service... OK, I set clients (Mac, window) to use static IP, its work for a day and now the server even lose its IP. It is mean I can not ping to server, cannot have Internet, can not share file... just a nice, deadly box!
At home I can still use SSH to connect to that server and when I use ipconfig:
server-001:~ Xadmin$ ipconfig getifaddr en2
get if addr en2 failed, (os/kern) failure
server-001:~ Xadmin$ ipconfig getifaddr en0
10.0.0.10
server-001:~ Xadmin$ ipconfig getoption en0 2
ipconfig_get_option failed, (os/kern) failure
server-001:~ Xadmin$ ipconfig getoption en2 2
ipconfig_get_option failed, (os/kern) failure
server-001:~ Xadmin$ ipconfig getoption en2 3
ipconfig_get_option failed, (os/kern) failure
server-001:~ Xadmin$ ifconfig en2
en2: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
          ether 10:9a:ad:41:c6:10
          media: autoselect (none)
          status: inactive
server-001:~ vidagisadmin$ ifconfig en0
en0: flags=8863<UP,BROADCAST,SMART,RUNNING,SIMPLEX,MULTICAST> mtu 1500
          ether c4:1c:03:4a:eb:d4
          inet6 fe80::c12c:1ff:fe3a:ebd4%en0 prefixlen 64 scopeid 0x8
          inet 10.0.0.10 netmask 0xffffff00 broadcast 10.0.0.255
          media: autoselect (100baseTX <full-duplex>)
          status: active
Do you have this before?
How can I active the en2 network interface?
Any clue is very appriciate and this is very URGENT!!!!!
Thanks for your time!
Please note that:
- I use Macmini server as a gateway, and use an USBEthernet (en2) to sharering that internet connection.
- hostname appear is OK when I check it through ssh
Please help!!!

Hi Esther, I use DHCP for server.
Actually I found that we have problem with the network cable only! Anyway thanks!
If this forum have a moderator I hope, please delete this discussion, thanks!

When I record an audio track, there is a waveform. When I stop recording, the waveform disappears and becomes a straight line. It also disappears from the track edit window. But the sound is there. How can I stop the waveform from disappearing?

When I record an audio track using Logic Pro X, there is a visible waveform which appears as I record. When I stop recording, the waveform disappears and becomes a straight line. It also disappears from the track edit window. But the sound is still there. How can I stop the waveform from disappearing? And can I do something to view it after it has disappeared? Anyone know the anser?

In Logic:
Preferences/Audio Set Recording Delay to 0 <zero>
This should always be set to zero unless a specific set of circumstances exist and you're audio drivers do not report position correctly.
On occasion, usually when importing a Logic 9 project, Logic-X randomly changes this to a negative/positive number. It's actually a bug in Logic, as it should always display the waveform.

When my iPhone is connected (via the Lightning cable) to the usb port in my car, the alert tones are no longer played through the car speaker or the phone. This previously worked, but has randomly stopped working, help!

When my iPhone is connected (via the Lightning cable) to the usb port in my car, the alert tones are no longer played through the car speaker or the phone. This previously worked, but has randomly stopped working. help!

I took my iPhone to the Service center of M/s RSG INFOTECH PRIVATE LIMITED on April 17, 2014.
Why are you posting in this forum about what occured with an independent service provider? How is is at all relevant to Apple?? In fact, service by any person or business not authorized by Apple voids any waranty.

Music and videos start playing fine but randomly stop and the volume bar disappears

I have an iPhone 4S and run 6.1.3. I start to play music or videos (youtube, ESPN, Netflix, any) and they start to play fine but then randomly stop. The volume bar disappears as well. But then it reappears and I can play it again. When I do so it plays about 30 seconds, sometimes less, and pauses again. I have to repeat the process. Any idea how to fix or what might be causing the problem?

Try a reset:
- hold both the home button and sleep/wake button down at the same time
- the iPhone will turn off(keep holding) but as soon as you see the apple logo appear release both buttons
Also make sure none of the LCI have been set off especially the one in the charging dock of the iPhone. Read the article below for help in checking this:
http://support.apple.com/kb/ht3302

Windows service does not stop when DB is shutdown from SQL*Plus

I have a 11g XE DB in a Windows 7 machine.
The installation has created a Windows service called OracleServiceXE. It's status is STARTED.
I then login to SQLPLUS as sysdba and do a shutdown immediate;
SQL> shutdown immediate
Database closed.
Database dismounted.
ORACLE instance shut down.
Problem is, when I refresh the services, the OracleServiceXE is still showing as STARTED.
If I use the listener control to stop the listener the Windows service OracleXETNSListener changes status to BLANK.
Why is this?

tvCa-Oracle wrote:
That service is a prerequisite Windows service to be able to start the database, but it is not the status of the database itself.
When you do start the database, he may or may not start the service automatically (not sure there), but it is a needed service, for each database SID, on Windows.
If you want to know what it is, open Task Manager or Process Explorer, only start the service (not the database), and see which OS process is launched.
AFAIK, this is only on Windows, there's no comparable component on Linux/Unix for this.
The Windows service OracleServiceXE has c:\app\oracle\product\11.2.0\server\bin\ORACLE.EXE XE as the Parth to executable.
If I click on the Services tab in Task manager, then right-click the OracleServiceXE and click Go to process, it show the oracle.exe in the processes tab.
If stop it, the service, from the Windows service control, the oracle.exe disappears and we cannot login to the DB.
If we start the service from the windows service control, the oradim.exe appears, then a second later the oracle.exe appears. Once the DB status of the Windows service is STARTED, the oradim.exe disappears.
So, I can start and stop the oracle DB with the Windows service. But If I stop the DB from sql*plus the the service is not stopped....

My MacBookPro (mid 2012) will not complete the boot process. Yosemite's progress widget gets about 1/3 to 1/2 way across when the logo disappears and the screen goes all white for 10-15 secs or so, then the machine shuts down and restarts.

My MacBookPro (mid 2012) will not complete the boot process. Yosemite's progress widget gets about 1/3 to 1/2 way across when the logo disappears and the screen goes all white for 10-15 secs, then the machine shuts down and restarts. This sequence will repeat seemingly forever unless I shut it down manually.
I upgraded to Yosemite from Mountain Lion a couple months ago, skipping Maverick completely, and I've done any associated updates that Apple told me about. I don't recall which version of Yosemite I have, but I'm sure it is the "latest and greatest".
I've tried re-starting in Safe Mode / Safe Boot and that does the same thing as described above except without the endless restarts. Instead of restarting at some point, SafeBoot proceeds to the white screen and then it hangs until I restart it manually. (I've waited as long os 20-30 minutes with no response).
When I tried the option-command-p-r key combo I never get any chimes or other noises besides the original 1 time boot sound that you would expect to get when starting up a macbook pro.
I was using the mac quite normally (meaning I was doing work I normally do on it and there was no indication of anything wrong) immediately prior to this happening.
The machine is BootCamp(ed) with Windows 8.1 which I use from a VMWare virtual machine instead of natively so that I can have both OSes running at the same time. I also think this is unrelated to my problem. I have been using this setup for more than 2 years.
My upgrade to Yosemite was uneventful and I thought it went well and was very smooth. I don't want to lead attention away from Yosemite, but at this point my problem does not seem related to the upgrade.
Any help is appreciated.

Install or Reinstall OS X from Scratch
Be sure you backup your files to an external drive or second internal drive because the following procedure will remove everything from the hard drive.
Boot to the Recovery HD:
Restart the computer and after the chime press and hold down the COMMAND and R keys until the menu screen appears. Alternatively, restart the computer and after the chime press and hold down the OPTION key until the boot manager screen appears. Select the Recovery HD and click on the downward pointing arrow button.
Erase the hard drive:
1. Select Disk Utility from the main menu and click on the Continue button.
2. After DU loads select your startup volume (usually Macintosh HD) from the
      left side list. Click on the Erase tab in the DU main window.
3. Set the format type to Mac OS Extended (Journaled.) Optionally, click on
      the Security button and set the Zero Data option to one-pass. Click on
      the Erase button and wait until the process has completed.
4. Quit DU and return to the main menu.
Reinstall OS X: Select Reinstall OS X and click on the Install button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible
           because it is three times faster than wireless.

When i Put my Ipod Touch 2nd gen in my computer it says Apple Mobile Device Service has stopped working and does not show up in itunes Help?

well yh Apple Mobile Device Service has stopped working and won't show up the error message keeps on poping up?
ipod touch 2nd gen
http://gyazo.com/57a6260ece61212ba210bfe5659e399b.png

Try this:
iPhone, iPad, iPod touch: How to restart the Apple Mobile Device Service (AMDS) on Windows

Can a subVI tell when the application it is part of has been stopped and restarted?

Can a subVI tell when the application it is part of has been stopped and restarted?
It is easy enough for a subVI to tell when it has been run for the first time after having been loaded into memory. But is there a way for a subVI to tell when the application it is part of has been stopped and restarted? Is there some property or application-invocation-specific refnum that when queried multiple times during the same run of the application would return the same value yet when queried during different runs of the application would return different values?
I don�t want to depend on anything that happens when a run is exited.
I don�t want to require code to be included in the main V
I to accomplish the solution.
(Otherwise I could, in the main VI create an un-named semaphore tied to a global; the subVI could then check the global to see if the value changed, which it would between runs of the application.)
Any ideas?

Have you tried the First Call? function? It's on the Advanced>Synchronization palette.

DHCP service randomly stopping, when restarted scopes disappear

Similar Messages

Maybe you are looking for