Strange, Frequent electronic sounds after waking iMac from sleep.

Since i began syncing my iPhone (8GB) V.1.0.2 to my 20" 2.4Ghz iMac, a strange electronic, interference sound come from the computer immediately after I wake it from sleep.
The sound starts as the Comp awakens and continues off and on frequently for about 5-10 minutes. After that times passes, the strange sound ceases temporarily. Once 10 minutes have passed the time interval between the electrical interference sound is 10 minutes or so. I have the same desktop speakers plugged into the audio out jack that I have for a month now.
The odd thing is I can MUTE the sounds from the keyboard button and the sound continues regardless. I believe the sound is coming from the built in speakers rather than the external speakers.
Also, this problem crept up before the iMac update today.
I tried searching the forums here but I didn't turn anything up. can anyone suggest a solution?

I just noticed that the closer my iPhone is to the speakers in my Intel iMac or my home theaters speakers causes a frequent audible interference. Is this a known issue with AT&T's GSM or is it something unique to the iPhone?

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Loss of sound after waking up from sleep

I am currently using OS X 10.8.5 (12F37). After upgrading iTunes to 11.1 (126) I lose sound after the computer wakes up from sleep. This was not a problem prior to the iTunes upgrade. The only way to correct the problem is to restart or shut down then restart the computer. Are there any other solutions to this event?

This is not just a Mac Mini problem. I've found comments from people with all kinds of Mac, with any kind of external sound device, who all have this same issue.
The common factor is Mountain Lion.
Apparently there is a new build (12F42) which is supposed to fix this.
http://www.gadgetguide4u.com/new-os-x-1085-build-number-12f42.html
Apple released it to their employees on the 25th Sept.
Yet they don't even seem to have told their support people about it. My local apple store replaced my Mac Mini just on Sunday, because they didn't know why it was behaving like that. Needless to say, the new one has the same problem.
Here's hoping that build is available soon ...

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My macbook runs extremely slow when logging in after waking up from sleep, locking up and I am unable to use the keyboard. Furthermore, when just using safari to watch streaming television, my computer gets really slow, and locks up, and the dock appears blank and I sit here frustrated. Anytime i wake up my computer, my keys don't respond and I've waited at most 3 minutes untill i can type in my password. Even sometimes when i type in my password and hit enter, it takes forever to open up my mac. I have barely used any storage in my macbook, since i only use it for college, and I have run clamscan wiht no viruses showing... Any ideas?

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Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, or by a peripheral device.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including sound output andWi-Fi on certain iMacs. The next normal boot may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin. Test while in safe mode. Same problem? After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

Lose connection to external USB hard drive after waking up from sleep

My Mac lost connection to the external USB hard drive after waking up from sleep. I can still see the folders in the hard drive in Finders, but when I double clip a folder no file within the folder is displayed. I have to reconnect the hard drive with iMac to read its contents.
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... I un-ticked the "put hard disks to sleep when possible" option in the Energy Saver panel in the System Preferences, and it seems the problem is solved. will have to sleep and wake up my iMac to further verify if this is the solution ...
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Ethernet interface disappears after waking up from sleep

Hi guys,
I've been trying to debug a networking problem without any luck and I think it's about time I ask the forum for help.
My ethernet interface no longer works after I wake up my computer from sleep. I have no idea why.
Before sleep:
# ls /sys/class/net
lo wlp2s0 enp3s0f2
After waking up from sleep,
ls /sys/class/net
lo wlp2s0
Here are the list of services I have running.
UNIT LOAD ACTIVE SUB DESCRIPTION
dbus.service loaded active running D-Bus System Message Bus
[email protected] loaded failed failed dhcpcd on enp3s0f2
[email protected] loaded active running Getty on tty1
[email protected] loaded active running Daemon which acts upon network cable inse
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systemd-journald.service loaded active running Journal Service
systemd-logind.service loaded active running Login Service
systemd-random-seed.service loaded active exited Load/Save Random Seed
systemd-remount-fs.service loaded active exited Remount Root and Kernel File Systems
systemd-sysctl.service loaded active exited Apply Kernel Variables
systemd-tmpfiles-setup-dev.service loaded active exited Create static device nodes in /dev
systemd-tmpfiles-setup.service loaded active exited Recreate Volatile Files and Directories
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systemd-update-utmp.service loaded active exited Update UTMP about System Reboot/Shutdown
systemd-user-sessions.service loaded active exited Permit User Sessions
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[email protected] loaded active running User Manager for 1000
Furthermore, plugging in the ethernet cord after the computer has started doesn't connect to the internet, even when I have the ifplugd service running. I am forced to run:
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sudo dhcpcd enp3s0f2
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It seems to be fixed after the kernel update. On an related note, I've switched from using dhcpcd to netctl. I've enabled netctl to automatically connect to the network using:
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# systemctl enable [email protected]
So when I check for the status of the ethernet profile, I get told that's it's inactive.
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netctl@ethernet\x2ddhcp.service - Networking for netctl profile ethernet-dhcp
Loaded: loaded (/usr/lib/systemd/system/[email protected]; static)
Active: inactive (dead)
Docs: man:netctl.profile(5)
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IT encore2 WT8-B32CNM

If you can't solve your issue and no one in the community can help, contact support to speak with a tech support agent at (800) 457-7777.
- Peter

Why does my Mac screen suddenly go dark? Sometimes it stays dark for an indefinite period after waking up from sleep.

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Might try posting in the MacBook Pro laptop forum. This is the Mac Pro desktop forum.
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Basically as the title says. When I wake my iMac from sleep mode I am unable to use my keyboard/trackpad/mouse during the login window. Once the screen goes black by itself, after a minute or so I can then log in properly.
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Processor 3.4 GHz Intel Core i7
Memory 24 GB 1600 MHz DDR3
Graphics NVIDIA GeForce GTX 680MX 2048 MB
Software OS X 10.8.5 (12F37)

Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, or by corruption of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled on some models, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
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The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin. Test while in safe mode. Same problem? After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

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I was having the same problem after installing mountain lion.
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Track pad freeezzzz after waking up from sleep mode

HI
i have OS X Ver 10.5.1
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Hi,
I have almost the same problem with my T540p, except that there is no internet connection not only after waking up from the sleep mode, but also when starting windows and sometimes the internet connection will get suddenly lost during normal windows run.
I tried installing all kinds of drivers - latest from intel, latest from lenovo update (which is always different version from the one from intel), some older versions. Nothing helps.
Re-enabling the WiFi device like Aaziz1982 suggested, doesn't help.
Here is a more detailed description of my problem: http://forums.lenovo.com/t5/T400-T500-and-newer-T-series/T540p-WiFi-Connected-no-internet/m-p/177818...
Does anyone have other suggestions?
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Trouble when waking iMac from sleep?

When I wake my iMac from sleep I get an error message on screen telling me there has been an unexpected shutdown. Any clues as to the solution?

Thanks for the quick replies. When I look in System Diagnostic Reports there is nothing there, plenty in 'all messages. However I did copy the messages sent tp Apple on the last problem which I paste below...
Sun Mar 30 18:12:35 2014
panic(cpu 1 caller 0xffffff800d4dbe2e): Kernel trap at 0xffffff800d450a34, type 14=page fault, registers:
CR0: 0x0000000080010033, CR2: 0x0000000000000008, CR3: 0x00000000207ee000, CR4: 0x0000000000000660
RAX: 0x0000000000000000, RBX: 0xffffff8019921fd8, RCX: 0x0000000000000000, RDX: 0xffffff800dacb940
RSP: 0xffffff808e353a18, RBP: 0xffffff808e353a48, RSI: 0xffffff8019921290, RDI: 0xffffff8010ecb360
R8: 0x0000000000000000, R9: 0x00000000000001d0, R10: 0x00000000000001f0, R11: 0x0000000000000206
R12: 0xffffff8019921298, R13: 0x0000000000000000, R14: 0xffffff8019921290, R15: 0xffffff8010ecb360
RFL: 0x0000000000010246, RIP: 0xffffff800d450a34, CS: 0x0000000000000008, SS: 0x0000000000000010
Fault CR2: 0x0000000000000008, Error code: 0x0000000000000002, Fault CPU: 0x1
Backtrace (CPU 1), Frame : Return Address
0xffffff808e3536a0 : 0xffffff800d422fa9
0xffffff808e353720 : 0xffffff800d4dbe2e
0xffffff808e3538f0 : 0xffffff800d4f3326
0xffffff808e353910 : 0xffffff800d450a34
0xffffff808e353a48 : 0xffffff800d45160a
0xffffff808e353b28 : 0xffffff7f8f9cd238
0xffffff808e353b68 : 0xffffff7f8f9ced47
0xffffff808e353bb0 : 0xffffff800d7c4ed0
0xffffff808e353c00 : 0xffffff800d624460
0xffffff808e353cd0 : 0xffffff800d622e48
0xffffff808e353da0 : 0xffffff800d624c1f
0xffffff808e353dd0 : 0xffffff800d7f543b
0xffffff808e353e10 : 0xffffff800d7bf0a3
0xffffff808e353e40 : 0xffffff800d7f09e6
0xffffff808e353f50 : 0xffffff800d83e363
0xffffff808e353fb0 : 0xffffff800d4f3b26
      Kernel Extensions in backtrace:
com.intego.virusbarrier.kext.realtime(775.0)[16F2B151-9311-3DF1-8148-99CBEFAC07 FB]@0xffffff7f8f9cc000->0xffffff7f8f9d2fff
BSD process name corresponding to current thread: configd
Mac OS version:
13C64
Kernel version:
Darwin Kernel Version 13.1.0: Thu Jan 16 19:40:37 PST 2014; root:xnu-2422.90.20~2/RELEASE_X86_64
Kernel UUID: 9FEA8EDC-B629-3ED2-A1A3-6521A1885953
Kernel slide: 0x000000000d200000
Kernel text base: 0xffffff800d400000
System model name: iMac11,3 (Mac-F2238BAE)
System uptime in nanoseconds: 33037812554
last loaded kext at 31385312477: com.apple.driver.AppleBluetoothHIDKeyboard     170.15 (addr 0xffffff7f8ed05000, size 24576)
last unloaded kext at 30552612340: com.intego.netbarrier.kext.network      653 (addr 0xffffff7f8f9cc000, size 36864)
loaded kexts:
com.intego.virusbarrier.kext.realtime           775
com.intego.netbarrier.kext.process                 653
com.intego.netbarrier.kext.monitor                653
com.apple.driver.AudioAUUC          1.60
com.apple.driver.AppleHWSensor                 1.9.5d0
com.apple.driver.AGPM    100.14.15
com.apple.driver.AppleTyMCEDriver          1.0.2d2
com.apple.filesystems.autofs            3.0
com.apple.driver.AppleBluetoothMultitouch             80.14
com.apple.iokit.IOBluetoothSerialManager                 4.2.3f10
com.apple.driver.AppleMikeyHIDDriver    124
com.apple.driver.AppleMikeyDriver             2.6.0f1
com.apple.driver.AppleHDAHardwareConfigDriver                2.6.0f1
com.apple.driver.AppleHDA            2.6.0f1
com.apple.iokit.IOUserEthernet     1.0.0d1
com.apple.iokit.IOBluetoothUSBDFU             4.2.3f10
com.apple.driver.AppleMuxControl              3.4.35
com.apple.iokit.BroadcomBluetoothHostControllerUSBTransport       4.2.3f10
com.apple.Dont_Steal_Mac_OS_X   7.0.0
com.apple.driver.AppleBacklight 170.3.5
com.apple.driver.AppleLPC             1.7.0
com.apple.driver.AppleHWAccess                  1
com.apple.driver.AppleUpstreamUserClient               3.5.13
com.apple.driver.AppleMCCSControl           1.1.12
com.apple.kext.AMDFramebuffer 1.2.0
com.apple.driver.ACPI_SMC_PlatformPlugin              1.0.0
com.apple.AMDRadeonX3000       1.2.0
com.apple.kext.AMD5000Controller             1.2.0
com.apple.driver.AppleIntelMCEReporter                   104
com.apple.driver.AppleIRController             325.7
com.apple.driver.AppleUSBCardReader     3.4.1
com.apple.driver.AppleFileSystemDriver   3.0.1
com.apple.AppleFSCompression.AppleFSCompressionTypeDataless                 1.0.0d1
com.apple.AppleFSCompression.AppleFSCompressionTypeZlib         1.0.0d1
com.apple.BootCache         35
com.apple.iokit.SCSITaskUserClient               3.6.6
com.apple.driver.XsanFilter             404
com.apple.iokit.IOAHCIBlockStorage             2.5.1
com.apple.driver.AppleUSBHub    666.4.0
com.apple.iokit.AppleBCM5701Ethernet   3.8.1b2
com.apple.driver.AppleFWOHCI   4.9.9
com.apple.driver.AppleAHCIPort 3.0.0
com.apple.driver.AirPort.Atheros40              700.74.5
com.apple.driver.AppleUSBUHCI 656.4.1
com.apple.driver.AppleUSBEHCI 660.4.0
com.apple.driver.AppleRTC             2.0
com.apple.driver.AppleACPIButtons             2.0
com.apple.driver.AppleHPET         1.8
com.apple.driver.AppleSMBIOS     2.1
com.apple.driver.AppleACPIEC     2.0
com.apple.driver.AppleAPIC           1.7
com.apple.driver.AppleIntelCPUPowerManagementClient 216.0.0
com.apple.nke.applicationfirewall                 153
com.apple.security.quarantine       3
com.apple.driver.AppleIntelCPUPowerManagement               216.0.0
com.apple.driver.AppleBluetoothHIDKeyboard        170.15
com.apple.driver.AppleHIDKeyboard           170.15
com.apple.kext.triggers     1.0
com.apple.driver.IOBluetoothHIDDriver    4.2.3f10
com.apple.driver.AppleMultitouchDriver 245.13
com.apple.iokit.IOSerialFamily       10.0.7
com.apple.driver.DspFuncLib         2.6.0f1
com.apple.vecLib.kext        1.0.0
com.apple.iokit.IOAudioFamily      1.9.5fc2
com.apple.kext.OSvKernDSPLib     1.14
com.apple.iokit.IOSurface                  91
com.apple.iokit.IOBluetoothFamily                4.2.3f10
com.apple.driver.AppleGraphicsControl     3.4.35
com.apple.iokit.IOBluetoothHostControllerUSBTransport     4.2.3f10
com.apple.driver.AppleBacklightExpert     1.0.4
com.apple.driver.AppleSMBusPCI                  1.0.12d1
com.apple.iokit.IOFireWireIP          2.2.6
com.apple.driver.AppleHDAController        2.6.0f1
com.apple.iokit.IOHDAFamily         2.6.0f1
com.apple.driver.AppleSMBusController   1.0.11d1
com.apple.driver.AppleSMC            3.1.8
com.apple.driver.IOPlatformPluginLegacy                  1.0.0
com.apple.driver.IOPlatformPluginFamily                  5.7.0d10
com.apple.iokit.IONDRVSupport   2.4.1
com.apple.iokit.IOAcceleratorFamily             98.14
com.apple.kext.AMDSupport           1.2.0
com.apple.AppleGraphicsDeviceControl     3.4.35
com.apple.iokit.IOGraphicsFamily                  2.4.1
com.apple.iokit.IOUSBHIDDriver   660.4.0
com.apple.iokit.IOSCSIBlockCommandsDevice          3.6.6
com.apple.iokit.IOUSBMassStorageClass      3.6.0
com.apple.driver.AppleUSBMergeNub         650.4.0
com.apple.driver.AppleUSBComposite         656.4.1
com.apple.iokit.IOSCSIMultimediaCommandsDevice               3.6.6
com.apple.iokit.IOBDStorageFamily               1.7
com.apple.iokit.IODVDStorageFamily           1.7.1
com.apple.iokit.IOCDStorageFamily               1.7.1
com.apple.iokit.IOAHCISerialATAPI               2.6.1
com.apple.iokit.IOSCSIArchitectureModelFamily      3.6.6
com.apple.iokit.IOUSBUserClient   660.4.2
com.apple.iokit.IOEthernetAVBController 1.0.3b4
com.apple.driver.mDNSOffloadUserClient                   1.0.1b5
com.apple.iokit.IOFireWireFamily                  4.5.5
com.apple.iokit.IOAHCIFamily        2.6.5
com.apple.iokit.IO80211Family    630.35
com.apple.iokit.IONetworkingFamily            3.2
com.apple.iokit.IOUSBFamily           675.4.0
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             278.11
com.apple.kext.AppleMatch             1.0.0d1
com.apple.security.TMSafetyNet    7
com.apple.driver.AppleKeyStore   2
com.apple.driver.DiskImages          371.1
com.apple.iokit.IOStorageFamily   1.9
com.apple.iokit.IOReportFamily     23
com.apple.driver.AppleFDEKeyStore            28.30
com.apple.driver.AppleACPIPlatform           2.0
com.apple.iokit.IOPCIFamily            2.9
com.apple.iokit.IOACPIFamily         1.4
com.apple.kec.corecrypto                   1.0
com.apple.kec.pthread      1
Model: iMac11,3, BootROM IM112.0057.B01, 4 processors, Intel Core i5, 2.8 GHz, 4 GB, SMC 1.59f2
Graphics: ATI Radeon HD 5750, ATI Radeon HD 5750, PCIe, 1024 MB
Memory Module: BANK 0/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80AD, 0x484D54313235533654465238432D48392020
Memory Module: BANK 1/DIMM0, 2 GB, DDR3, 1333 MHz, 0x80AD, 0x484D54313235533654465238432D48392020
AirPort: spairport_wireless_card_type_airport_extreme (0x168C, 0x8F), Atheros 9280: 4.0.74.0-P2P
Bluetooth: Version 4.2.3f10 13477, 3 services, 23 devices, 1 incoming serial ports
Network Service: Ethernet, Ethernet, en0
Serial ATA Device: ST31000528AS, 1 TB
Serial ATA Device: HL-DT-STDVDRW GA32N
USB Device: Hub
USB Device: HP LaserJet M1005
USB Device: Built-in iSight
USB Device: IR Receiver
USB Device: Hub
USB Device: BRCM2046 Hub
USB Device: Bluetooth USB Host Controller
USB Device: Internal Memory Card Reader
Thunderbolt Bus:

Trouble waking imac from sleep

when I try and wake my imac from sleep mode it takes a long time to load back up the fan keeps kicking on and off usually have to reset the computer to fix the problem

when I try and wake my imac from sleep mode it takes a long time to load back up the fan keeps kicking on and off usually have to reset the computer to fix the problem

IMac OSX Lion 10.7.4 loses Wifi after waking up from sleep

So basically just like my title states, when my computer wakes up from sleep about 70% of the time the internet will not work. My mac does see and connect to my network, but something isn't being sent as I have no connection when trying to surf the web. I then reset my modem and router, and it still doesn't work. What fixes my problem is a reboot or Logging out and back in. I don't know why that does the trick but it does. I have looked at http://support.apple.com/kb/DL1501, however this update is only for 10.7.3. Is there something I can do to fix this problem?
As a side note, if I have Parallels Desktop running my iMac's wifi after sleep will not work, but it will work in the Windows 7 parallel. Why is this?

Hello, this has worked for some...
Make a New Location, Using network locations in Mac OS X ...
http://support.apple.com/kb/HT2712
10.5.x/10.6.x/10.7.x instructions...
System Preferences>Network, top of window>Locations>Edit Locations, little plus icon, give it a name.
System Preferences>Network, click on the little gear at the bottom next to the + & - icons, (unlock lock first if locked), choose Set Service Order.
The interface that connects to the Internet should be dragged to the top of the list.
Instead of joining your Network from the list, click the WiFi icon at the top, and click join other network. Fill in everything as needed.
For 10.5/10.6, System Preferences>Network, unlock the lock if need be, highlight the Interface you use to connect to Internet, click on the advanced button, click on the DNS tab, click on the little plus icon, then add these numbers...
208.67.222.222
208.67.220.220
Click OK.

Satellite P200D-11R sound and graphics crash after waking up from sleep mode

Hi,
I am wondering if anyone here has had similar experiences to mine (below) or can offer any solutions.
I have upgraded my P200D-11R OS to Vista 64 Ultimate to take advantage of the extra performance. I also add that the BIOS has already been updated to version 1.4.
Well, everything works fine with the standard 2Gig of RAM which the laptop was supplied with originally, however, when I upgrade the RAM to 4Gig (2 x 2GB Samsung 667mHz modules), sound and graphics problems appear every time the machine is brought back from sleep mode.
The sound card makes a very laud fuzzy noise every time it wants to play a sound and the graphics produce lots of horizontal lines on the screen. I then just have to restart the machine which means loosing all my unsaved work.
Everything works fine as long as the machine does not enter sleep mode. I have currently disabled the sleep mode to prevent the machine from entering it but I am finding life very hard without it.
I am very surprised and also disappointed at the fact that Toshiba did not test these machines with Vista 64 Ultimate and 4Gig of RAM!
Extra info:
The memory is the same Samsung type as the 1Gig modules supplied by Toshiba originally with the machine, and the part number Toshiba recommends.
I have tried installing other (more recent) device drivers by Realtek and ATI without any improvements.
The memory modules pass all tests and are not defective. They have also been tested on my friends Dell notebook with no problems even in sleep mode.
I have installed my friends Dell 2Gig memory modules in my P200D and they too produce exactly the same results with post-sleep crashes.
My thoughts are that this must be another BIOS issue unless anyone can shed some light on the issue from another angle.
Please help! Many thanks in advance.

Hi Sascha
Since you are running a Vista 32bit version, the upper limit of the memory recocnised by the machine is 3.2gb which is the maximum a 32bit operating system can address and use. The diffrence here is that I also upgraded my OS to Vista Ultimate 64bit to get yet better performance out of the 64bit dual AMD processor.
3.2gb of RAM on 32bit OS does not necessarily increase the performance. However, it keeps the performance stable when you open many more programs at the same time since the machine has more RAM to play with before staring to use the much slower hard drive as operating memory (Page File), to keep all thoes open programs running.
A 64bit OS such as Vista Ultimate 64, recognises the whole 4gb of RAM and much more (for instance, 8gb with 2 x 4gb RAM modules). The 64bit OS itself would generally consume more RAM to start with, however, with 4gb I found the general performance to be much better. Going back to the problem however, my P200D-11R with Ultimate 64 and 4gb RAM refuses to wake up from sleep mode gracefully and the graphics and sound crash every time, forcing me to restart.
My feelings at present is that eventhough your machine may be slightly different, I bet if you upgrade your OS to 64bit, the machine will start recognising all of the 4gb of RAM and post-sleep crashes will start to appear!

Strange, Frequent electronic sounds after waking iMac from sleep.

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