Installing Yosemite = dead screen, disaster

I have a number of Macs, and first installed Yosemite on two home machines before tackling the main one I use at work. Those installations went fine. The installation on my main machine (a 2014 Mac Pro) has been catastrophic.
I left it running overnight, came in to see a weird smear of colour across the screen. Rebooted into Safe Mode, nothing. Re-installed using Recovery Partition, similar outcome (no colour, though, just an absolutely blank screen).
In desperation, I tried remote login and discovered a perfectly normal-looking UNIX system running on this machine. I took the opportunity to delete /usr/local/texlive (mentioned by some as causing problems) and re-installed Yosemite a third time via the Recovery Partition. Everything looked fine: downloading components, restarting, installing, completing, restarting. Screen working normally the entire time.
But the result is the same. My Mac Pro with Yosemite will not drive the screen (which is an Apple Cinema Display, about 5 years old). I don't even get an Apple logo when starting up. You can hardly tell if the screen is on or off.
But it does start up, and I can ssh into it from another machine and play with UNIX.
Help please!

Similar problem running a 27" iMac only it occurs in Excel and inDesign. Hit the cell with the curser and the worksheet moves over to the right 7 or 8 cells away. Have to curser back to the cell quite frequently. This issue make the machine unusable when working with those two aps. Today I did the ultimate and completely reloaded Yosemite and the problem is still there.

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Installing Yosemite was a disaster

Not a question, so much as a report.
I have a mid 2014 Retina Macbook Pro so I assumed installing Yosemite would be straight forward on such a new machine.
However, I was hit by 3 issues.
1. Very slow install, progress bar stuck. I did a bit of searching on line and the advice seems to be wait it out, so I did, for 12 hours!
2. When it did eventually restart, it would not boot, instead it became stuck on the startup screen. Waited for another 12 hours and eventually had to boot in safe mode.
Tried the whole process again with a fresh download and experienced the same outcome.
3. Eventually, I settled on reinstalling Mavericks from my time machine, but half my apps were missing. It turns out (from more web research) that Time Machine has a bug which prevents it from doing a full back up every time. I had to trawl back to find the last complete back up, some three weeks old and reinstall that. Fortunately I keep all my docs in the cloud (Google Drive), so more recent versions could be recovered from there.
Come on Apple, I've been a loyal user and, dare I say, fan for ten years, but you've really dropped the ball with this one and in the process wasted my entire weekend, time I don't have to waste!
Yosemite looks great, but I daren't risk another attempt at an update in case the same happens again - at least I now have a working computer again.
Let me know when you have a working version available, until then how about compensation for my wasted weekend?
I would have emailed this to Applecare had I been able to find an email address, so this forum has had to do.
Regards
C

Not a question, so much as a report.
I have a mid 2014 Retina Macbook Pro so I assumed installing Yosemite would be straight forward on such a new machine.
However, I was hit by 3 issues.
1. Very slow install, progress bar stuck. I did a bit of searching on line and the advice seems to be wait it out, so I did, for 12 hours!
2. When it did eventually restart, it would not boot, instead it became stuck on the startup screen. Waited for another 12 hours and eventually had to boot in safe mode.
Tried the whole process again with a fresh download and experienced the same outcome.
3. Eventually, I settled on reinstalling Mavericks from my time machine, but half my apps were missing. It turns out (from more web research) that Time Machine has a bug which prevents it from doing a full back up every time. I had to trawl back to find the last complete back up, some three weeks old and reinstall that. Fortunately I keep all my docs in the cloud (Google Drive), so more recent versions could be recovered from there.
Come on Apple, I've been a loyal user and, dare I say, fan for ten years, but you've really dropped the ball with this one and in the process wasted my entire weekend, time I don't have to waste!
Yosemite looks great, but I daren't risk another attempt at an update in case the same happens again - at least I now have a working computer again.
Let me know when you have a working version available, until then how about compensation for my wasted weekend?
I would have emailed this to Applecare had I been able to find an email address, so this forum has had to do.
Regards
C

Installing Yosemite on iMac 2013 hangs with status bar midway

Trying to install Yosemite, but screen just displays a white screen with apple logo and the status bar is around 50 %
been running for about 4.5 hrs, will leave overnight, but then what if no joy.
I Thought that Apple was good over these types of things, it is a Apple iMac 27" 2012 machine with 8Gb Ram.
thanks
ian

If you use the power button to shut down and then restart does it boot?  menu/About This Mac - what is installed?
Do a backup, preferably 2 separate ones on 2 separate drives.
Revert to a Previous OS X - Yosemite
Revert Yosemite to Mavericks
If you do revert, I'd use Setup Assistant to restore your data. This process takes a while, so do it when you won't need the computer for several hours, based on my experience.

16 mo young Mac Pro will not turn on. Dead. Why. No problems ever! Installed Yosemite and did not boot up after. Did that kill it? To young to die. What

16 mo young Mac Pro will not turn on. Dead. Why. No problems ever! Installed Yosemite and did not boot up after. Did that kill it? To young to die. What happened?what do I do now??????? Help!

Note that you don't have a Mac Pro as stated. Your profile says you have a MacBook Pro. Please clarify as they are entirely different computers. If nothing below works for you, then make a Genius Appointment and take it in for service.
Try these in order testing your system after each to see if it's back to normal:
1. a. Resetting your Mac's PRAM and NVRAM
    b. Intel-based Macs: Resetting the System Management Controller (SMC)
2. Restart the computer in Safe Mode, then restart again, normally. If this doesn't help, then:
     Boot to the Recovery HD: Restart the computer and after the chime press and hold down the
     COMMAND and R keys until the Utilities 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.
3. Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the Utilities menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility. After DU loads select your hard drive entry (mfgr.'s ID and drive size) from the the left side list. In the DU status area you will see an entry for the S.M.A.R.T. status of the hard drive. If it does not say "Verified" then the hard drive is failing or failed. (SMART status is not reported on external Firewire or USB drives.) If the drive is "Verified" then select your OS X volume from the list on the left (sub-entry below the drive entry,) click on the First Aid tab, then click on the Repair Disk button. If DU reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit DU and return to the main menu. Select Restart from the Apple menu.
4. Reinstall Yosemite: Reboot from the Recovery HD. Select Reinstall OS X from the Utilities menu, and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.

Yosemite downloaded and installed than Black screen. all we have is a black screen. Traveling in Indonesia so no Apple store nearby. The screen does not respond to reboot in safe mode. Can anyone help to get the Mac Book Pro up and running again?

We are in indonesia travelling and after downloading and installing Yosemite, on our next restart the screen went black and responds to nothing. Tried to reboot (shift key) in safe mode after first crashing the system but nothing responds except for the opening chime. Toal disaster so any help will be greatly appreciated. Judging by the comments I have read, Yosemite seems to have many issues for us to look forward to, if and when we can bring back the Mac Book Pro to life.

See if you can boot into the Recovery volume (boot with the Command + R keys held down). There you can reinstall the system.

I installed Yosemite and now my computer is slow when logging in. Also when I type my password the screen images are distorted. After that my home screen appears and everything seems normal. What can I do to fix this?

I installed Yosemite and now my computer is slow when logging in. Also when I type my password, a bar appears measuring the process and then all of a sudden the screen images are distorted. After that my home screen appears and everything seems normal. What can I do to fix this?
Here is what the etrecheck results are:
Problem description:
slow at start up, screen is distorted while logging in, it is fine after
EtreCheck version: 2.1.8 (121)
Report generated April 5, 2015 at 9:42:01 AM PDT
Download EtreCheck from http://etresoft.com/etrecheck
Click the [Click for support] links for help with non-Apple products.
Click the [Click for details] links for more information about that line.
Hardware Information: ℹ️
    MacBook Pro (13-inch, Early 2011) (Technical Specifications)
    MacBook Pro - model: MacBookPro8,1
    1 2.3 GHz Intel Core i5 CPU: 2-core
    4 GB RAM Upgradeable
        BANK 0/DIMM0
            2 GB DDR3 1333 MHz ok
        BANK 1/DIMM0
            2 GB DDR3 1333 MHz ok
    Bluetooth: Old - Handoff/Airdrop2 not supported
    Wireless: en1: 802.11 a/b/g/n
    Battery Health: Normal - Cycle count 297
Video Information: ℹ️
    Intel HD Graphics 3000 - VRAM: 384 MB
        Color LCD 1280 x 800
System Software: ℹ️
    OS X 10.10.2 (14C109) - Time since boot: 0:7:0
Disk Information: ℹ️
    Hitachi HTS545032B9A302 disk0 : (320.07 GB)
        EFI (disk0s1) <not mounted> : 210 MB
        Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
        Macintosh HD (disk1) / : 318.84 GB (174.85 GB free)
            Encrypted AES-XTS Unlocked
            Core Storage: disk0s2 319.21 GB Online
    MATSHITADVD-R   UJ-898
USB Information: ℹ️
    Apple Inc. Apple Internal Keyboard / Trackpad
    Apple Inc. BRCM2070 Hub
        Apple Inc. Bluetooth USB Host Controller
    Apple Inc. FaceTime HD Camera (Built-in)
    Apple Computer, Inc. IR Receiver
Thunderbolt Information: ℹ️
    Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
    Mac App Store and identified developers
Kernel Extensions: ℹ️
        /System/Library/Extensions
    [not loaded]    com.devguru.driver.SamsungComposite (1.1.0) [Click for support]
    [not loaded]    com.logmein.driver.LogMeInSoundDriver (1.0.3 - SDK 10.5) [Click for support]
        /System/Library/Extensions/ssuddrv.kext/Contents/PlugIns
    [not loaded]    com.devguru.driver.SamsungACMControl (1.1.0) [Click for support]
    [not loaded]    com.devguru.driver.SamsungACMData (1.1.0) [Click for support]
Startup Items: ℹ️
    HP Trap Monitor: Path: /Library/StartupItems/HP Trap Monitor
    Startup items are obsolete in OS X Yosemite
Problem System Launch Daemons: ℹ️
    [failed]    com.apple.ucupdate.plist
    [failed]    com.apple.watchdogd.plist [Click for details]
Launch Agents: ℹ️
    [not loaded]    com.google.keystone.agent.plist [Click for support]
    [not loaded]    com.hp.help.tocgenerator.plist [Click for support]
    [not loaded]    com.logmein.LMILaunchAgentFixer.plist [Click for support]
    [not loaded]    com.logmein.logmeingui.plist [Click for support]
    [not loaded]    com.logmein.logmeinguiagent.plist [Click for support]
    [not loaded]    com.logmein.logmeinguiagentatlogin.plist [Click for support]
Launch Daemons: ℹ️
    [not loaded]    com.adobe.fpsaud.plist [Click for support]
    [not loaded]    com.google.keystone.daemon.plist [Click for support]
    [not loaded]    com.logmein.logmeinblanker.plist [Click for support]
    [not loaded]    com.logmein.logmeinserver.plist [Click for support]
    [not loaded]    com.logmein.raupdate.plist [Click for support]
    [not loaded]    com.microsoft.office.licensing.helper.plist [Click for support]
User Launch Agents: ℹ️
    [not loaded]    com.adobe.ARM.[...].plist [Click for support]
    [not loaded]    com.facebook.videochat.[redacted].plist [Click for support]
    [not loaded]    com.google.GoogleContactSyncAgent.plist [Click for support]
User Login Items: ℹ️
    iTunesHelper    UNKNOWN Hidden (missing value)
    AdobeResourceSynchronizer    Application Hidden (/Applications/Adobe Reader.app/Contents/Support/AdobeResourceSynchronizer.app)
    Android File Transfer Agent    Application (/Users/[redacted]/Library/Application Support/Google/Android File Transfer/Android File Transfer Agent.app)
    HP Product Research    Application (/Library/Application Support/Hewlett-Packard/Customer Participation/HP Product Research.app)
    HPEventHandler    Application (/Library/Printers/hp/hpio/HPEventHandler.app)
Internet Plug-ins: ℹ️
    o1dbrowserplugin: Version: 5.40.2.0 - SDK 10.8 [Click for support]
    LogMeInSafari64: Version: 1.0.660 [Click for support]
    Default Browser: Version: 600 - SDK 10.10
    Silverlight: Version: 5.1.10411.0 - SDK 10.6 [Click for support]
    FlashPlayer-10.6: Version: 17.0.0.134 - SDK 10.6 [Click for support]
    LogMeIn: Version: 1.0.660 [Click for support]
    Flash Player: Version: 17.0.0.134 - SDK 10.6 [Click for support]
    LogMeInSafari32: Version: 1.0.660 [Click for support]
    QuickTime Plugin: Version: 7.7.3
    googletalkbrowserplugin: Version: 5.40.2.0 - SDK 10.8 [Click for support]
    AdobePDFViewer: Version: 10.0.1 [Click for support]
    SharePointBrowserPlugin: Version: 14.1.0 [Click for support]
    iPhotoPhotocast: Version: 7.0 - SDK 10.7
3rd Party Preference Panes: ℹ️
    Flash Player [Click for support]
Time Machine: ℹ️
    Time Machine not configured!
Top Processes by CPU: ℹ️
         7%    ocspd
         4%    WindowServer
         1%    kextd
         0%    ps
         0%    securityd
Top Processes by Memory: ℹ️
    137 MB    Microsoft Word
    120 MB    Safari
    86 MB    ocspd
    82 MB    CalendarAgent
    77 MB    WindowServer
Virtual Memory Information: ℹ️
    310 MB    Free RAM
    1.89 GB    Active RAM
    1.55 GB    Inactive RAM
    544 MB    Wired RAM
    1.13 GB    Page-ins
    8 KB    Page-outs
Diagnostics Information: ℹ️
    Apr 5, 2015, 09:32:47 AM    Self test - passed
    Apr 5, 2015, 09:30:05 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/AdobeResourceSynchronizer_2015 -04-05-093005_[redacted].crash
    Apr 4, 2015, 01:12:41 PM    /Users/[redacted]/Library/Logs/DiagnosticReports/AdobeResourceSynchronizer_2015 -04-04-131241_[redacted].crash
    Apr 4, 2015, 08:13:57 AM    /Users/[redacted]/Library/Logs/DiagnosticReports/AdobeResourceSynchronizer_2015 -04-04-081357_[redacted].crash

Reinstalling OS X Without Erasing the 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.
Reinstalling OS X Without Erasing the Drive
Repair the Hard Drive and Permissions: Upon startup select Disk Utility from the main menu. Repair the Hard Drive and Permissions as follows.
When the recovery menu appears select Disk Utility and press the Continue button. After Disk Utility loads select the Macintosh HD entry from the the left side list. Click on the First Aid tab, then click on the Repair Disk button. If Disk Utility reports any errors that have been fixed, then re-run Repair Disk until no errors are reported. If no errors are reported click on the Repair Permissions button. Wait until the operation completes, then quit Disk Utility and return to the main menu.
Reinstall OS X: Select Reinstall OS X and click on the Continue button.
Note: You will need an active Internet connection. I suggest using Ethernet if possible because it is three times faster than wireless.
Alternatively, see:
Reinstall OS X Without Erasing the Drive
Choose the version you have installed now:
OS X Yosemite- Reinstall OS X
OS X Mavericks- Reinstall OS X
OS X Mountain Lion- Reinstall OS X
OS X Lion- Reinstall Mac OS X
     Note: You will need an active Internet connection. I suggest using Ethernet
                 if possible because it is three times faster than wireless.

I tried to install yosemite yesterday and my computer goes through the whole installation process and then to a blank white screen. I've rebooted, I've reinstalled several times and get the same result. Two days wasted!

I tried to install yosemite yesterday and my computer goes through the whole installation process and then to a blank white screen. I've rebooted, I've reinstalled several times and get the same result. Two days wasted and I can't use my computer!!

I don't know if you've already resolved your problem, but I had the same thing, it took me 6 hours to fix it. I had the exact same as you, installed the update and then it went to a white screen. After trying start up holding down cmmd r or holding down the alt key to try to install it again, nothing worked, same result every time. Then an angel came to me here somewhere but I can't find it now to thank him. Start in safe mode, press shift once you hear the start up chime and hold it down until you hear it again. Installation completion box came up and it was working. turn off computer and start up again normally and all is well. Except my final cut pro x doesn't work with it, have to update that now too. same as when I updated to mavericks.
Hope this helps.

My hard drive crashed. Replaced my hard drive. Installed Yosemite. Restored from Time Machine most recent backup before hard drive crash. Now laptop won't start up. Grey screen with circle and slash through it.

How to start up laptop from grey screen with circle and slash through it?

After you installed Yosemite and prior to restoring from the backup, were you able to start the Mac?

Occasionally flickering iMac screen after installing Yosemite

Occasionally flickering iMac ()intel) screen after installing Yosemite. Cannot yet specify when the flickering occurs, but it cover large sections of the screen. Absolutely annoying.

I also have this issue but only below 6 screen illumination steps (bars)
This flickering issue is active after waking up from sleep os screen sleep and if I increase the screen light to a setting higher than 6 screen step for a wile (30 seconds or so) and the reduce the light to a level below 6 steps it usually holds on without flickering.
This happens on an late 2009 iMac with nvidia card running OS X 10.10 and apple later upgrades but not (until now) on another same age and OS X version iMac I have but instead of the nvidia card it has an ATI
Question:
Has anyone tried to use the Mavericks nvidia graphic card driver with Yosemite?

My second screen disconnects randomly after installing Yosemite. ¿Any suggestion?

My second screen disconnects randomly after installing Yosemite. ¿Any suggestion?

Hello Juanjeli,
Thanks for the question. Based on what you stated, it seems like you are having trouble using an external display. I would recommend that you read this article, it may be able to help you resolve or isolate the issue.
Apple computers: Troubleshooting issues with video on internal or external displays
Thanks for using Apple Support Communities.
Cheers,
Mario

After installing yosemite start up screen has black wavy lines

After I have installed yosemite on my macbook pro the start up screen has wavy lines on it. When it first starts the line is in the middle of the screen and then it goes wavy black lines and then finally is ready to go. Is anyone else having this problem and how can I fix it. Thanks

Hey wealthylives,
Welcome to the HP Forums!
As the computer screen is remaining black/blank after the hard reset, I would suggest the following document 'Troubleshooting Black Screen Displays with No Error Messages During Startup or Boot'. Please follow through the steps outlined in order.
Please let me know the outcome of the troubleshooting.
Thank you.
I worked on behalf of HP

Imac does start up after trying to install yosemite. I got nothing but white screen.

My Imac does no start up after trying to install yosemite. I got nothing but a white screen.
I am doing this on a pc
I have disconnected all the USB and wifi. When it reboots I see a timer bar then a white screen.

Please clarify, are you attempting to install Yosemite on a PC and not a Mac?

Since installing yosemite my computer/screen blacks out, but still running

Since installing yosemite last week, my computer/screen blacks out, but still running. I have since rebooted everything, started from scratch and utilizing my external drive transferred all files/apps back. Did not help, in fact it is getting worse. Computer screen blacks out every 5 min or so and have to power up again. Also, continue to get Java message updates even after all have been updated over and over again. Any suggestions? Thanks!

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.

My Yosemite startup screen (grey mac logo and bar) has frozen after installing. The progress bar is stuck at halfway.

My Yosemite startup screen (grey mac logo and bar) has frozen after installing. The progress bar is stuck at halfway.
H

I've had the same issue and despite clearing the PRAM and powering on and off repeatedly this is what has (at least temporarily) resolved my issue:
I've done this 3 times and sometimes it works right off the jump other times I've had to wait a bit and try again or power off and try again, once the start up screen is frozen hit Command : Option : Shift : Esc and a window should pop up "You restarted because of a problem..." from there you can go to your desktop. I haven't found an actual resolution to fix the problem but this does get you into your computer.
Hope this helps!

Since installing Yosemite I have had difficulty in starting my iMac. Either its a blank screen or I get the rainbow wheel.

Two days ago I installed Yosemite. On start up I now get either a blank screen and have to power down by holding the start button or I get the rainbow wheel which takes ages to clear.

I notice that the home page redirects to a secure (HTTPS) address. I wonder whether there is a setting blocking this? What if you go directly to a secure page -- will it load?
https://www.itvsn.com.au/include/sweb.dll/product?product=155602&category=92010&site_id=ITVSN
Your add-ons list shows AVG, ZoneAlarm, and McAfee products. Could one of them be blocking this site? See whether you can add exceptions or just disable them temporarily and test whether that helps.

Installing Yosemite = dead screen, disaster

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