Yosemite restarts on login screen

When I'm logged in and inactive after some time a see the login screen (that's ok and that's what I want ;)) but when OS is in that state after some time it reboots.
How can I fix that issue? Is it a bug in the OS or some wrong setting somewhere?

Hello sloik84,
It may be due to the settings to log you out after a certain amount of time of inactivity. Check in System Preferences > Security & Privacy and in the General Tab you should see a button that says Advanced. In order to click it, you will need to click the lock in the lower left hand corner and enter in your password for your computer. Once that it is done you can click on Advanced and you will see a section called Log out after... minutes of inactivity and set it to how you want it to be.
OS X Yosemite: Set your Mac to log out when not in use
http://support.apple.com/kb/PH18670
Regards,
-Norm G.

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Yosemite froze on login screen

Good Day.
I am a South African Mac user and after the 10.10.2 upgrade everything was fine and yesterday I restarted and my screen got stuck at the login and would not go further than 50%. I tried everything PRAM and even new installation of Yosemite but nothing. I read it has something to do with file vault en encription, but connot get in, to switch it off. I am a basic user and not yet very familliar with mac fixes and problems, can someone please help. I am desperate.

Hi Piero,
As jy backups het van jou data is 'n nuwe installasie miskien die beste, maar jy kan die volgende stappe eers probeer:
Verseker dat jou Mac af is.
- Hold Command-R on the keyboard and turn on the Mac (Keep the keys held down)
- Click on Utilities or Disk utilities
- In the left column you should see Macintosh HD and underneath again Macintosh HD but greyed out
- Click on the greyed out Macintosh HD
- On the top bar you should see: Verify, Info... click on Unlock and enter the password your were asked to make for FileVault
- Next click on File at the very top menu bar and you should see 'Turn off encryption' .. click it.
- You will have to enter your password once again.
- Either a progress bar will appear and if not, restart your macbook as usual; Log in and start the System Preference, Security and Privacy, FileVault and hopefully it should be decrypting and giving you an estimated time which decreases very quickly.
If not successful, give a shout and I will post the steps for a totally new installation
Hoop dat dit help
Leo

Installing yosemite on windows login screen

Hi, after something went totaly wrong with my mac, I found myself stuck on the windows login screen (My mac also operated with windows). I didnt remember my windows password and I cant change it via mail or something. So I was really stuck in there and I think I should buy os x yosemite so I can install os x again. But my question is: If I put the stick in my mac, can I reinstall os x again or will nothing happen? Because if I buy it and nothing is gonna happen Ive bought that stick for nothing,
Thank you!

You don't buy a USB drive with Yosemite on it. You download Yosemite from the App Store. To reinstall OS X:
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.

After installing yosemite stuck on login screen

So against my better judgement, I decided to upgrade to Yosemite. The login seemed to be going ok, then I noticed it was stock on the progress bar... once again, against my better judgement, I did a hard reboot. When my iMac rebooted, it went through the loading screen ok, and onto my user login screen. After selecting my account and putting in my PW, it is now stuck on the color wheel loading icon... nothing happens. What are my options?

Hi there,
They DID solve it at the genius bar!
He tried a few code tricks, aka booting up using command+S, but those didn't work. He ran a restore permissions and reinstalled Lion (without removing any of my personal data) and hey presto, it works. I'm typing to you now on the machine.
Is that enough info for you, or would you like me to get more..? I do have to go back soon for another issue. I just want to help the community with problems.
J

Install failed due to loss of power and Yosemite will now not go past login screen. Help!

I recently tried to install OS X Yosemite. unfortunately during the install my laptop was unplugged and the installation failed mid way through. Each time I start my mac I get to login screen and after logging in get an error message and told to restart and try again - which does not resolve the issue. Guest login do work to the safari screen. Any help hugely appreciated.
The error message reads:
You need to restart your computer. Hold down the power button until it turns off, then Press the power button again.
Behind system code, including:
panic(CPU 2 caller 0xffffff 80005418bf):
"process 1 exec of /sbin/launchd failed, errno 45"@/sourcecache/xnu/xnu-1699.32.7/bsd/kern/kern_exec.c:3546
Debugger called: <panic>
Backtrace (CPU 2), Frame: Return Address
0Xffffff80e8423e00 : 0xffffff8000220792
7 more lInes like the one above
BSD process name corresponding to current thread: init
MAc OS version:
not yet set
THen kernel version data.

Try booting into the Safe Mode using your normal account. Disconnect all peripherals except those needed for the test. Shut down the computer and then power it back up after waiting 10 seconds. Immediately after hearing the startup chime, hold down the shift key and continue to hold it until the gray Apple icon and a progress bar appear and again when you log in. The boot up is significantly slower than normal. This will reset some caches, forces a directory check, and disables all startup and login items, among other things. When you reboot normally, the initial reboot may be slower than normal. If the system operates normally, there may be 3rd party applications which are causing a problem. Try deleting/disabling the third party applications after a restart by using the application un-installer. For each disable/delete, you will need to restart if you don’t do them all at once.
Safe Mode - About
Safe Mode - Yosemite

Login screen on Yosemite remains plain white instead of blurred wallpaper

Hello,
My login screen on updating OSX Yosemite remains plain white instead of being colorful blur image of my desktop. I tried several options, but couldn't fix the issue. It remains colorful when put to sleep but not on restart. My friends' login screen is still the blurred image of desktop on updating to Yosemite. COuld someone suggest me a way to fix this issue. I dont like the plain white screen upon login.

I had my normal desktop background showing up at login (only one account), but I changed a desktop to a solid color for a presentation and then back to the original image afterwards. After doing that, my login screen now shows the solid blue that I used, even though no desktops are set to the solid color anymore.
Not a solution... but I have absolutely no idea where it is pulling that solid blue background from, and I would guess its probably the same as where its pulling your mismatched login screen from.
edit -- the solid color is only when the computer has been fully shut down; for sleep/lock/etc I get my background image. But, I did used to get my normal image as a login background after fully shutting down.

MacBook Pro with retina display (2014) stuck on login screen after latest Yosemite update

Yesterday I ran the latest Yosemite update. The MacBook restarted afterwards, but the login screen won't respond to trackpad or keyboard. The MacBook is fully charged, BTW. I've shut down by holding the power key until it powers off, let it rest, and powered up again. I get the chime and the login screen, but I can't select anything either with trackpad or keyboard.
OH

Sorry folks, this is me again.
NEVER MIND. I closed the lid, opened it, and all is well. I don't know what was going on, but it seems to have resolved itself.

Stuck at login screen after Yosemite Upgrade - 2013 27" imac won't recognize keyboard or mouse

I installed yosemite without issues on my 2013 macbook pro retina so decided to try it on my 2013 27" imac. Install went fine until I get to login screen. Wireless keyboard and mouse won't pair so I can't type in password. Connected generic wired keyboard and mouse and still won't recognize it.
However, when I restart it I can hold down option on keyboard and it will bring up list of hard drives to boot from (I also have windows installed with bootcamp) so I know imac pairs the key

So the iMac was purchased by my father in 2011 shortly before he died. I thought, why not check if he also purchased Applecare at the same time? Turns out he did! So after calling and trying to reset the SMC, etc. with it not working the Apple tech told me to turn it over to an authorized repair shop here in Louisiana. Hopefully they can fix it.

Yosemite - login screen on low res

Hello all,
i'm facing strange issue. After update to Yosemite on my MacBook Pro Retina ( Mid 2012 ) login screen appears in low-res.
I've tried changing resolution and several restarts but no luck so far. Anyone had same issue?
Thanks for any advice.

Also experiencing this on my Late-2013 15" rMBP...it wasn't present during the early OSX 10.10 betas but has been persistent over the last few and now with the full release.
I have done a full, clean install as well to see if something was fubared in the settings but nope. What a really silly issue to have. 10.10 wasn't ready for primetime, these aren't the type of bugs that people should be experiencing.
What I can say though is that for me, this issue is limited to when i'm using an external display. If I use my laptop without anything connected externally it doesn't happen.

How can I change the background blur effect on Yosemite login screen?

How can I turn off the background blur effect on the Yosemite login screen on my 27" iMac?
Each time my family changes to a different user on the iMac, the wallpaper blurs (other than the small login box). It is as if you have lost your vision temporarily when such a large display becomes blurred. It is particularly bad if there is a lot of contrast in the colors of the wallpaper.

Hi,
the VDI login screen/desktop selector uses the configured default locale from the Sun Ray kiosk session. You can change the default by logging into the Sun Ray admin UI (http://yourserver:1660) and selecting the Advanced - Kiosk Mode tab. Click on Edit and enter the desired locale (e.g. de_utf8) in the Locale field. Click OK to store your changes.
The next time a new kiosk session starts up it will take into account your changes. You can terminate all existing kiosk sessions by executing a cold Sun Ray services restart (see the Servers tab). Alternatively, you can also just quit your current kiosk session by clicking on "More Options - Quit" in the VDI login screen.
Please notice one caveat here: the specified locale must be supported on your system. For example, execute locale -a on a terminal to get a list of all your currently installed locales. If you specify a locale that does not exist on your system, then the kiosk session will ignore this and it will have no effect on the VDI login screen.
Hope that helps.
- Klaus

When I restart my computer instead of the gray screen that is supposed to appear before the login screen it shows a screen with a lot of letter

I upgrade my ssd for my macbook pro retina from the 256 to 480 GB but when I tunr it on or restarted the computer the gray screen that is suppost to apper dosent show insted a screen with lettler show before the login screen besides that the computer works fine.

I cannot decipher what is written on the images you have posted but they are reminiscent of what I have seen when a MBP is dealing with some totally incompatible software or perhaps in your case hardware.
How and or who installed the larger SSD and what manufacture is it. I suspect that is the problem.
Ciao.

Mountain Lion Desktop crash? Randomly it returns me to the login screen and I have restart all my apps

So after install of Mountain Lion (never happened before) my desktop crashes and it returns me to the login screen. After I login I have to restart all my apps.
One morning this happened 5+ times in under an hour. So my productivity has gone down :-(
I work around this by only running three apps (finder, terminal & firefox), and then it sees to only happen 2-3 times a day...sigh.
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An help on how to debug/solve would be helpful.

You're welcome. If you use Zoom often try the new show controller feature. It's below where you turned zoom off. Once you turn it on you can use it to turn Zoom on and off. Plus you can use zoom as a magnifying glass instead of full screen.

Yosemite installed on iMac purchased with Mavericks now takes 2 minutes to boot and give the login screen.

Downloaded and installed os x yosemite on iMac that was purchased originally with Mavericks. When power button is pressed I get start up audio tone and then the the black screen with the white apple symbol with the progression bar. The bar moves very slowly two about one third and then the mouse cursor appears and there it stalls for around two minutes. After the wait the login screen appears and it operates normally. This whole process before update would only take maybe 30 seconds.
If I try the web recovery process it will revert back to Mavericks any suggestions on what this might be. I do have an external Mac passport pro external drive that does have time machine enabled and has been there for months.
Thanks

After spending a number of hours with Apple Care personnel I was connected with a supervisor and finally got the iMac to boot up on every attempt and in a reasonable amount of time. Login screen now comes on in 30 to 40 seconds and computer is usable within a total time of 1 minute to 1minute 30 seconds.
Here was the process. Tried to download whole operating system with reinstall from utilities menu at power on and at 7 hours progress bar stalled at one third the way. Reason, time machine external hard drive was still connected during process. Disconnected all external connections except power and tried download again. This time whole operating system downloaded in 15 to 20 minutes. Yosemite installed and rebooted automatically and booted to login screen, signed in then to desktop, but boot took around five minutes. Shutdown and connected all peripherals, i.e.. ext. HD, DVD, printers and tried to start. iMac stalled at 2 minutes into progression bar with white apple symbol before login screen. Removed peripherals and tried again and still stalled and would not boot.
What was done to correct is as follows. Started iMac in Safe Mode, cleared all items in cache from Macintosh HD/Library folder and System /Library folder, system start up items, launch agents, and launch daemons contents cleared, removed printers in system preferences, ran disk utilities verify and repair of disk and disk permissions. Shutdown and removed power from iMac. With no peripherals system then booted normally. Reconnected peripherals while iMac was still on and added printers back to system preferences and all is well.
So it seems only reasonable that the downloading problem was hindered by the time machine external hard drive, to which an Apple rep. agreed and the extremely slow boot up or stalled boot up was caused by items in the start up and launch folders. I will state here that I was using my ISP's anti virus software for the Mac which was in the launch folders and most likely was causing the boot up problems.

Upgrade to Yosemite cause weird dual screen mirror on login only

I just upgraded (and also tried a fresh install to an external drive with the same results) to Yosemite from Mavericks. When I start the MPB I get the apple and the thermometer (white fill in bar) every time I reboot after a complete shutdown. Then, the login screen is mirrored on the external monitor and LCD in a non wide screen resolution (looks like 1024x768). After I log in it looks ok but this doesn't happen with Mavericks. I just got this MBP Jan 2014. Any help would be greatly appreciated. I also tried cmd-opt-p-r.

A friend just told me the apple/thermometer is normal for Yosemite so ignore that part.

After updating to 10.10.3, now my Macbook Pro will not stay logged in. I log in after restarting, and it will stay logged in for 3-5 seconds then immediately log off and go back to the login screen. Any help?

After updating to 10.10.3, now my Macbook Pro 15" (mid-2014) will not stay logged in. I log in after restarting, and it will stay logged in for 3-5 seconds then immediately log off and go back to the login screen. Any help?
By the way, I also updated my Macbook Pro 17" (mid-2009) and it seems to be running fine, though I haven't tried to restart it and log in. I'm afraid I won't be able to get this one to work either if I do.

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, by a font conflict, or by corruption of the file system or of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards, if applicable. Start up in safe mode and log in to the account with the problem. You must hold down the shift key twice: once when you turn on the computer, and again when you log in.
Note: If FileVault is enabled in OS X 10.9 or earlier, or if a firmware password is set, or if the startup volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to start up and run than normal, with limited graphics performance, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal startup may also be somewhat slow.
The login screen appears even if you usually login 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, restart as usual (not in safe mode) and verify that you still have the problem. Post the results of the test.

Yosemite restarts on login screen

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