Slight crackle coming out of the speakers after waking up from sleep?

anyone else had this happen to them? I just hear a short, quiet crackling noise coming out of my speakers after waking up. My MBP 17 is great otherwise. Its not really even a big deal, just wondering. Thanks

I've been encountering this problem recently with my left speaker when waking my laptop from sleep. It doesn't happen all the time though - almost seems like it happens when it's hot and humid out, like today, even though my A/C is on. I've seen one or two more threads about this topic but with no real help other than "I wouldn't worry about it". Does anyone else have any ideas? It's not a life-or-death ordeal, but still, I know the speaker shouldn't make this noise.

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Hello, I have a macbook pro late 2011 15 inch with 4 gb ram. My macbook runs extremely slow when logging in after waking up from sleep, locking up and I am unable to use the keyboard. Is there a fix?

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.

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
kmod-static-nodes.service loaded active exited Create list of required static device nod
[email protected]\x2dSecure.service loaded active exited Networking for netctl profile wlp2s0-Wolf
polkit.service loaded active running Authorization Manager
systemd-backlight@acpi_video0.service loaded active exited Load/Save Screen Backlight Brightness of
systemd-fsck@...\x2d38bc68d942fc.service loaded active exited File System Check on /dev/disk/by-uuid/1c
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
systemd-udev-trigger.service loaded active exited udev Coldplug all Devices
systemd-udevd.service loaded active running udev Kernel Device Manager
systemd-update-utmp.service loaded active exited Update UTMP about System Reboot/Shutdown
systemd-user-sessions.service loaded active exited Permit User Sessions
systemd-vconsole-setup.service loaded active exited Setup Virtual Console
upower.service loaded active running Daemon for power management
[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:
sudo ip link set enp3s0f2 up
sudo dhcpcd enp3s0f2
However, I can't run these commands after the laptop wakes up from sleep since it no longer sees the ethernet interface.
I am thoroughly confused. Please help me.

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:
# systemctl enable [email protected]
# systemctl enable [email protected]
So when I check for the status of the ethernet profile, I get told that's it's inactive.
#netctl status ethernet-dhcp
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)
But I turned off the wireless, so I must be connected to the ethernet, So how do I know which profile I'm connected to?

W510 eSATA/USB2.0 combo port does not respond after waking up from sleep mode

Has anyone tried to connect external DVD/CD player or burner to the eSATA/USB combo port and experienced very slow system performance after waking up from sleep mode? It might takes minutes to launch an application program that usually takes just few seconds. My W510 can not even restart. It will just stop at the Thinkpad logo if I tried to restart after waking up from sleep.
The funny thing is if I moved the external DVD/CD player to the USB2.0 port in the back, everything went back to normal. I don't know if this has anything to do with the fact that the combo port has something to do with eSATA.
Thanks

It seems that this problem is unique to my system. I am hoping that one of the Mac Guru's will have at least a pointer in the right direction.
Thanks.

Touchscreen stops working after waking up from sleep

Touchscreen stops working after waking up from sleep sometime it not working at all.
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.

Why does my Mac screen suddenly go dark? Sometimes it stays dark for an indefinite period after waking up from sleep. I have to open and shut the monitor screen to get it to light up again.

Might try posting in the MacBook Pro laptop forum. This is the Mac Pro desktop forum.
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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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Thanks!

... 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 ...
Alternative advices are always greatly appreciated!

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!

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Waking up from Sleep mode does not start the CPU fan.
Kernel: 2.6.32-ARCH
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I was having the same problem after installing mountain lion.
What i did was in Finder went to /Library/Preferences/SystemConfiguration/ and deleted all the networking plists (refer screen shot). Then restarted the Mac and in Network Preferences reconnected to my WLAN.
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Track pad freeezzzz after waking up from sleep mode

HI
i have OS X Ver 10.5.1
i have enough ram, disk space, and have the 2.4 GHz Core 2 Duo processor.
but when my mac wakes up from sleep the track pad is just not behaving properly, i.e it keeps jumping positions and freezes until i restart. if this continues it will be very frustration to use leopard.
also i did not get the option to archive and install at the installation so i cant even down grade, this is one of those time i trusted that everything will go right and looks like the problems just begun.
please help me !
Vinod

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?
Thank you,
Pavel

HT201177 My Macbook pro: After sleeping, the screen comes on momentarily then blacks out. When I close the lid and reopen it the same thing happens. The screen only does this after waking up from sleeping. Help, thanks!

Macbook Pro:
When I raise the lid after sleeping, the screen comes on momentarily then backs out. If I close the lid and raise it again, the same thing happens. It is sometimes necessary to force quit. Once restarted, there is no problem unless the lid is closed for a short time and the machinge goes to sleep.
Help! Hesperia fire captain

Hi ...
Try Resetting the System Management Controller (SMC)

I can't be the only one with this issue. MacBook Pro Retina Late-2013 WiFi disconnects after waking up from sleep.

Did anyone buy a MacBook Pro Retina 13" from Best Buy this Black Friday?
I'm having an issue where the WiFi disconnects after the MacBook wakes from sleep but only after a couple of minutes.
Once the WiFi disconnects, I can't reconnect to the same network and sometimes it won't find nearby networks.
I have to turn off the WiFi and wait for at least 5 seconds before turning it back on for it to auto-reconnect to my home network.
If I wait less than 5 seconds, it will continue to attempt connection to the home network but won't connect.
I've tried reformatting and deleting my network configurations as well as resetting my modem, power cycling it, etc.
I am using 2Wire Gateway modem/router from AT&T on b/g network.
I've tried connecting to a friend's network under Time Warner Cable and the same issue occurs.
I exchanged the MacBook at a Best Buy for a brand unopened one (I hope) and the same exact thing happens with this new one.
Really, I can't be the only one with this issue. Unless in a 0.00001% chance I received two defective units in a row?
Please.. does anyone have a clue why this is happening?

You're definitely not the only one. I have the same issue. I spent 6 hours over multiple days on the phone with Apple support trying a variety of things (some of which are mentioned above), and none of them worked. They finally sent me a replacement laptop. I made sure to try it periodicaly as I was moving files and installing applications to see if I ran into it again and things seemed okay at first but now I am running into the same issue and it is terribly annoying. I've got 5 other devices that connect to the same router and I've never had this issue with any of them.
My router is a Linksys E2000. I haven't tried changing the router channel but I have tried to cnnecting to other networks in the building I live in and I have run into the same issue there.

The App Switcher of Mac OS X Lion doesn't display properly after waking up from sleep

Hey guys,
I have a MacBook Pro15 inch Core2Duo 2.66GHz running Mac OS X 10.7.2.
When my Mac woke up from sleep, sometime the Application Switcher doesn't show the iconc properly like this.
Other time, it shows the dark icon.
The color profile setting seems to be messed up. But it only affects certain apps.
Some of my affected apps are
Application Switcher
like attached image
Icons got darker
TweetDeckThe app becomes darker overall
Gaicho Software's XRGThe supposed-to-be orange indicater became red
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Thanks in advanced!

Yes, change your display / colour profile to a different (or the default) profile. Has worked for myself, and many others on other forums.
Hope that helps...
D.

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?

Issues after waking up from sleep, macbook pro

Macbook Pro, retina display, mid 2014, 2.6 GHz i5
Yosemite 10.10.1
This problem started about 4 days ago. If I let my computer sleep for a over about an hour, one start up I have lots of issues. It is hard to explain what it is, so I'll explain what I am capable of still doing. The cursor works as in I can move it, but I cannot click anything. Also there is no "hover over" capabilities, like if I hover over something on the dock it usually won't say the programs name. The windows I had open are still there, but I cannot minimize or close them (as I cannot click).
This started like 4 days ago, I have tried a few fixes. One of which was upgrading to Yosemite, I was running Mavericks when it started. The problems persists. I then talked to someone from apple who suggested a SMC reset, but the issue is still there.
The only way I have been able to "fix it" is if after a start up the problem is there, close the lid for a minute, then open it back up. The issue usually then solves itself.
Any help would be greatly appreciated.

When you have the problem, note the exact time: hour, minute, second.
These instructions must be carried out as an administrator. If you have only one user account, you are the administrator.
Launch the Console application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
☞ In the Finder, select Go ▹ Utilities from the menu bar, or press the key combination shift-command-U. The application is in the folder that opens.
☞ Open LaunchPad and start typing the name.
The title of the Console window should be All Messages. If it isn't, select
          SYSTEM LOG QUERIES ▹ All Messages
from the log list on the left. If you don't see that list, select
          View ▹ Show Log List
from the menu bar at the top of the screen.
Each message in the log begins with the date and time when it was entered. Scroll back to the time you noted above.
Select the messages entered from then until the end of the episode, or until they start to repeat, whichever comes first.
Copy the messages to the Clipboard by pressing the key combination command-C. Paste into a reply to this message by pressing command-V.
The log contains a vast amount of information, almost all of it useless for solving any particular problem. When posting a log extract, be selective. A few dozen lines are almost always more than enough.
Please don't indiscriminately dump thousands of lines from the log into this discussion.
Please don't post screenshots of log messages—post the text.
Some private information, such as your name, may appear in the log. Anonymize before posting.

Slight crackle coming out of the speakers after waking up from sleep?

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