Hi. Since I upgraded to macOS Sierra, my early 2015 MacBook Pro freezes at the login screen. I've tried clean install, reinstall, SMC reset, NVRAM reset. Nothing seems to help. I can eventually slide the cursor to the Shut Down button, but it takes a while. Once it starts back up a second time it's fine... until I reboot or shut down again. Any thoughts? Thank you.
MacBook Pro (Retina, 13-inch,Early 2015), macOS Sierra (10.12)
Try booting in safe mode (hold down the sift key while booting) a couple of times. Does the login screen freeze?
Hi Trevoz, Thanks for the suggestion. I should have mentioned that it doesn't freeze when I start up in safe mode. But once I restart from safe mode, it freezes again.
In that case, download etrecheck from https://etrecheck.com and paste the results here.
OK, but there's not much to it...
EtreCheck version: 3.0.6 (315)
Report generated 2016-10-05 19:40:05
Download EtreCheck from https://etrecheck.com
Runtime 1:26
Performance: Excellent
Click the [Support] links for help with non-Apple products.
Click the [Details] links for more information about that line.
Problem: No problem - just checking
Description:
Freeze at login screen
Hardware Information: ⓘ
MacBook Pro (Retina, 13-inch, Early 2015)
[Technical Specifications] - [User Guide] - [Warranty & Service]
MacBook Pro - model: MacBookPro12,1
1 3.1 GHz Intel Core i7 CPU: 2-core
16 GB RAM Not upgradeable
BANK 0/DIMM0
8 GB DDR3 1867 MHz ok
BANK 1/DIMM0
8 GB DDR3 1867 MHz ok
Bluetooth: Good - Handoff/Airdrop2 supported
Wireless: en0: 802.11 a/b/g/n/ac
Battery: Health = Normal - Cycle count = 55
Video Information: ⓘ
Intel Iris Graphics 6100
Color LCD 2880 x 1800
System Software: ⓘ
macOS Sierra 10.12 (16A323) - Time since boot: about 3 hours
Disk Information: ⓘ
APPLE SSD SM0512G disk0 : (500.28 GB) (Solid State - TRIM: Yes)
EFI (disk0s1) <not mounted> : 210 MB
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
Macintosh HD (disk1) / [Startup]: 499.06 GB (479.32 GB free)
Encrypted AES-XTS Unlocked
Core Storage: disk0s2 499.42 GB Online
USB Information: ⓘ
Apple Card Reader
Broadcom Corp. Bluetooth USB Host Controller
Thunderbolt Information: ⓘ
Apple Inc. thunderbolt_bus
Gatekeeper: ⓘ
Mac App Store and identified developers
System Launch Agents: ⓘ
[not loaded] 6 Apple tasks
[loaded] 170 Apple tasks
[running] 95 Apple tasks
System Launch Daemons: ⓘ
[not loaded] 40 Apple tasks
[loaded] 160 Apple tasks
[running] 102 Apple tasks
Launch Daemons: ⓘ
[loaded] com.adobe.fpsaud.plist (2016-08-29) [Support]
[loaded] com.apple.installer.osmessagetracing.plist (2016-09-13)
User Login Items: ⓘ
iTunesHelper Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
Internet Plug-ins: ⓘ
FlashPlayer-10.6: 23.0.0.162 - SDK 10.9 (2016-10-01) [Support]
QuickTime Plugin: 7.7.3 (2016-09-13)
Flash Player: 23.0.0.162 - SDK 10.9 (2016-10-01) [Support]
Safari Extensions: ⓘ
1Password - AgileBits - https://agilebits.com/onepassword (2016-09-30)
3rd Party Preference Panes: ⓘ
Flash Player (2016-08-29) [Support]
Time Machine: ⓘ
Skip System Files: NO
Auto backup: YES
Volumes being backed up:
Macintosh HD: Disk size: 499.06 GB Disk used: 19.73 GB
Destinations:
Time Machine 2 [Network]
Total size: 399.66 GB
Total number of backups: 54
Oldest backup: 4/17/16, 10:16 AM
Last backup: 10/5/16, 6:39 AM
Size of backup disk: Adequate
Backup size 399.66 GB > (Disk used 19.73 GB X 3)
Time Machine 1 [Network]
Total size: 299.66 GB
Total number of backups: 47
Oldest backup: 6/12/16, 12:44 PM
Last backup: 10/5/16, 5:38 AM
Size of backup disk: Adequate
Backup size 299.66 GB > (Disk used 19.73 GB X 3)
Top Processes by CPU: ⓘ
4% WindowServer
3% fontd
2% kernel_task
1% Dock
1% com.apple.AmbientDisplayAgent
Top Processes by Memory: ⓘ
913 MB kernel_task
197 MB com.apple.WebKit.WebContent
180 MB assistant_service
180 MB assistantd
147 MB mds_stores
Virtual Memory Information: ⓘ
8.47 GB Free RAM
7.53 GB Used RAM (4.76 GB Cached)
0 B Swap Used
Diagnostics Information: ⓘ
Oct 5, 2016, 04:33:23 PM Self test - passed
I'm guessing you ran the Apple Diagnostics whichb has caused this com.apple.installer.osmessagetracing.plist to load?
You're right, it looks pretty clean. Does the problem still occur if you setup a new user account and use that?
I haven't tried that, but I'm going to say yes because the issue happens prior to a user logging in. I'm the only user and have just the 1 account.
I can tell when it's going to happen and when it's not. The startup sound occurs quicker and the boot time is quicker when everything is going to work correctly. It's almost as if a startup item is struggling, but then when I get to the login screen, keyboard and mouse inputs are incredibly slow to respond. About every minute I can either enter a single password character or move the cursor, which I normally move to the power button to turn off. Once it turns back on the system works just fine, but this process takes over 5 minutes.
OK. As it works in safe mode, it must be something that is loaded at startup. There's nothing obvious in the etrecheck report. If it was me, I would do this:
0. Backup any important or personal files.
1. Erase the disk and reinstall MacOS.
2. Check if the problem is still present.
3. If it is cured, manually copy your important/personal files back.
4. If installing other apps, check if the problem has returned after each one before proceeding to the next.
Well, in my case, the issue was File Vault. I disabled it and everything is working as normal. I re-enabled it and the problem returned immediately. I then disabled it again and all is normal again. Strange! 😕
Login Screen Locks Up
