After installing Mountain Lion, my iMac gets VERY hot!
I installed Mountain Lion yesterday onto my mid-2010 21.5" iMac. Today, while running it normally, it got so very hot that I couldn't even touch the aluminum back. The heat could be felt through the glass on the screen.
The fans could be heard, but didn't seem to be going overtly fast. CPU, memory, and disk usage all appeared normal.
I had Firefox, mail, Excel, and 1Password open at the time; certainly the apps weren't taxing the system.
Anyone else have this problem? Any suggestions?
Thanks!
Although the specs for Mountain Lion say it will run on 2 GB of ram, you really need 4 GB to run well. You can look at Launchpad > Utilities > Activity Monitor to see the memory usage with software open. If there are a lot of page swaps, in and out, you need more memory.
Good sources are OWC and Crucial for guaranteed compatible memory.
Similar Messages
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After installing Mountain Lion, is anyone get an interruption of the boot up process?
During the boot up process of my iMac, the system goes to a script screen with a lot of information ending with it saying "exit the script if I want to boot up". I just type in exit and the Mac sign on screen finaly comes up.
This has happend 3 times in my last 5 startups since installing Mountain Lion.
I've installed Mountain Lion on my Macbook Pro and my Macbook without any issues, this only happens on my iMac.Not quite the same as this thread, but similar perhaps: https://discussions.apple.com/thread/4155959?tstart=0
Tyr the PRAM reset as suggested by BDAqua - might work. -
Help! I thought I was doing the right thing by installing Mountain Lion on my 2009 MacBook Pro. It took forever to download correctly and now it is performing so poorly (freezing during applications, have to use force quit, have to use power button to shut it down, etc.) that I wish I never installed it! I want my old operating system back!
Boot in safe mode.* This will cause certain caches maintained by the system to be rebuilt. The instructions provided by Apple are as follows:
Be sure your Mac is shut down.
Press the power button.
Immediately after you hear the startup tone, hold the Shift key. The Shift key should be held as soon as possible after the startup tone, but not before the tone.
Release the Shift key when you see the gray Apple icon and the progress indicator (looks like a spinning gear).
*Note: If FileVault is enabled under OS X 10.7 or later, or if a firmware password is set, you can’t boot in safe mode.
Safe mode is much slower to boot than normal.
When the login screen appears, reboot as usual (not in safe mode) and test. There's no need to log in while in safe mode. -
After installing Mountain lion, macbook air 2011 very slow
After installation of Mountain lion my macbook air 2011 got very slow. There has been a firmware upgrade too. Can you help?
Hi guys! Just installed ML on my early 2009 MBAir (after market upgraded to a 240g SSD, but still just 2g of ram), and I panicked a bit at first when it turned out to be painfully slow and not displaying right (+slow trackpad!).
Bear in mind that the first thing ML will do is index your files for spotlight, which takes a while and is a bit of a resource hog that will slow everything else down and cause your machine to heat up.
I let it work all night, but by morning, my CPU usage was STILL at 100% and everything slow...
Activity monitor showed nothing over 10% CPU usage... First tip was to display ALL processes in Activity monitor, and not just MY processes, to see what exactly was sucking up my CPU!
Then, and it seems to often be the culprit on MBA's, it turned out that the kernel_task process was using up to 170% of my CPU usage (!). Problem is, that process sort of does a million things, so it can be hard to pinpoint the actual issue.
One of the things it does though, is work against overheating...
Given the download+install+indexing, my machine had been working all day and night, and was indeed getting super hot. Turning it off and letting it cool down for a whole fixed it all.
Kernel_task is back to normal, CPU usage is normal, display and trackpad are back to perfect. And in the end, ML is snappier than SL for me, even with the bare minimum in memory!
Good luck! <3 -
Can No Longer Get Camera Photos After Installing Mountain Lion
After installing Mountain Lion, I am no longer am able to see pictures from my digital camera thru the USB port. This camera has worked for years with my iMac, but not anymore. Anybody else having this issue after installing the newest system?
DickPaul_31:
I have not tried to import the photos directly into iPhoto. However, I did remove the SD card from the camera and plug it into a USB card reader, and my iMac would NOT read the photos that way either. I took the camera and plugged it into my Win. 7 laptop and the pictures showed up nicely, so I know the camera and the card are Ok. My iMac has been working strangely since I installed Mountain Lion. I'm getting lockups using iMovie too.
Dick -
after installing mountain lion I lost pictures in iphoto, lost my musisc in itunes, my icluod is not working, internet its very slow and some other issues. There is a way how to fix these issues
Open System Preferences > iCloud
Deselect the box next to Photo Stream then reselect it.
Now for your music. Launch iTunes. From the iTunes menu bar top of your screen click iTunes > Preferences then select the Store tab.
Select: Music. (and Apps and Books) if you want.
Click OK.
iCloud syncs via your Wi-Fi network so give it a minute or two to reset your photos and music.
Slow internet ... try turning off the modem for a few minutes, then turn it back on. -
After installing Mountain Lion, iMessages and Facetime does not work. When I try to sign-in I get a message that says: The server encountered an error processing registration. Please try again later. After 4 calls to apple and 8 and a half hours on the phone. The apple people does not how to solve the problem. The last thing they told me is that they will send the problem to their engineers and I will hear from them. unfortunately they have not contact me.
During the phone calls I tried putting the date and time in automatic, changing the username and password, I even tried using somebody elses username and password. Please help, facetime is my tool to telecomute, and it is hurting my job.I had the same problem and found the solution here:
https://discussions.apple.com/thread/3189272 -
My macbook pro is very slow after installing mountain lion
my macbook pro is very slow after installing mountain lion? Is anyone else having this issue?
If you don't use an SSD and bump your RAM up to 8 Gb's you may experience slow speeds, but I noticed slow speeds with your general configuration in SL.
one thing you should consider right now is, Spotlight is Reindexing your hard drive, that takes time and resources, (resources which you don't necessarily have to spare).
If you continue feeling like your performance is slow, you have a few options with this computer (I have the same one).
the express card slot can house a wintec SSD drive. That little door on the side of your machine is pure gold for a really quick solution for speeding up your machine. I have one in mine right now i'm using as a scratch disk for CS6 but I used to boot from it, and the speed boost was out of this world.
You could take out the internal HDD and put in a new SSD (I have a Vertex 4 from OCZ) it is completely over kill but my experience is pretty fast and I keep up with the later MBP models colleagues have.
There are some other options for you like taking out the optical drive (however I don't know if I'm supposed to talk about that here). Google Data Doubler.
You need to also set it to always use the 9600 chipset, this will increase performance a lot too. to do this go to system preferences>energy saver>Better Performance. This switches the video card to the better one and makes a world of difference.
Lastly, your RAM. after an EFI Firmware update, our computer support up to 8GBs of RAM. Do it!
Late 08 MBP 2.53 GHZ 9600 chipset 8gb ram, Vertex 4 SSD -
My wifi is very slow after installing mountain lion on my Mac book pro
My wifi is very very slow after installing mountain lion on my MacBook pro.
What can I do?Ha ha, I misread that as "My wife is very slow after installing mountain lion on my Mac book pro"
BTW on my MBPro (late 2009 with max RAM) Mountain Lion runs very well with no slowing down. -
Many of my System Preferences will no longer work after installing Mountain Lion. Software Update, Startup Disk, iCloud, Time Machine, Notifications, etc. no longer will launch even though they do show their icons in the system preferences window. I keep getting a drop down window saying I must restart system preferences in order to use with a "Cancel" or "OK" choice. After I click on "OK" the window just keeps reappearing with the same choices and the pane I wish to use still remains inoperative. Third party preference panes DO work.
Reinstalling OSX Mountain Lion did not help. Neither did throwing away preferences.plist.Hi Jeff,
Tried to reply with my iPhone but not easy! Anyway, back on the laptop now. Yes the crash was bad but Tek support at Prism Sound was really good. In the end I rebuilt the whole system on a new disk which took a couple of days with all the plugins, softsynths etc.... but there seemed to be no alternative in my case, and this was agreed with Prism sound as being the only alternative left to me. I still don't really know what caused the crash but ML and Orpheus are both working fine now. Let's face it, you'll have to update at sometime..maybe best to pick some time between projects On balance, I suspect that my problems were unique to my system and that your installation will go ok.
Hope it goes well,
Rick -
i have a 15-inch, Late 2011 macbook pro and i have this problem : temperature very high and batterilife too short after installing mountain lion, and after updating 10.8.2, i dont know what to do, im only using safari and the fan are runing veri high because of the temperature
Same here and no any answers
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Imac does not recognize my usb after installing mountain lion
My imac don´t recognize my usb after installing mountain lion, also don´t let me see all my photos in jpg format
What is "my USB"? If it's an external USB device, is it ML compatible?
Which app do you use to open JPGs? Is it ML compatible? -
MacBook Air late 2010 very hot after installing Mountain Lion? Can i back to Lion?
My MacBook Air, late 2010, is very hot and the vans are going too speedy after installing Mountain Lion. Can I deinstalling Mountain Lion and returno to Lion? What are the steps for this deinstallation? Thank you.
Technically, there is a way, but it is definitely not something I would recommend, as downgrading isn't usually supported/encouraged.
I found a website that has instructions but it clearly states it's not for the inexpert, so proceed at your own risk. Also, I don't think you can download Lion from the AppStore anymore? -
Since I installed Mountain Lion, my iMac has shut down after 15-20 minutes. I have adjusted screen saver, shut down time, and sleep after. Nothing seems to help, any ideas?
As old as your iMac is, have you cleaned out the dust? Dust buildup can lead to over heating issues. Remove any and all things plugged into it including the power cord, Remove the RAM access grille. Vacuum all openings starting with the RAM access area (air intake). Vacuum all ports and plugs, DVD slot and the opening across the top of the rear of the body. Blow compressed air through all your openings and vacuum again to remove any dust you loosend. Reinstall the RAM grille. Plug in the keyboard and mouse if not blue tooth. Insert power cord...
You are now in a perfect position to do a
SMC RESET
http://support.apple.com/kb/HT3964
Shut down the computer.
Unplug the computer's power cord and ALL peripherals.
Wait 15 seconds.
Attach the computers power cable.
Wait another 5 seconds and press the power button to turn on the computer.
It is the 5 second timing that initiates the reset.
Here is a link to a Widget to monitor your temps and other operations:
http://islayer.com/apps/istatpro/ -
Any idea how to get Yahoo to load after installing Mountain Lion??
http://www.koingosw.com/support/wiki/index.php/General_FAQ#Uninstalling_and_Pref erence_File_Locations
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