High CPU (kernel task) and Fan after new SSD and Power Supply
I’ve probably read just about every post on the internet regarding my issue and cannot find an answer so I am hoping the ifixit community can help.
I had issues with my late 2012 iMac randomly powering off, and the culprit of this seems to be a broken power supply. So I ordered a new LiteOn powersupply through ifixit and decided that if I am opening the iMac, I might as well change my 3TB HDD drive, with a 2TB SSD to speed up my old Mac. I purchase the Crucial MX500 2TB SSD.
Installation was not nearly as difficult as I expected, and had no problem installing all the items based on the guides provided. As suggested, I installed the thermal adapter on the SSD as well.
Hooked everything back up, installed Catalina and my computer all of a sudden was SLOW and super loud fan noise. Thinking it might be that Catalina doesn’t run on my old iMac, I reformatted the drive, and installed what came with my iMac, Mountain Lion, then updated to Mojave (which I ran on the old Hard drive). Neither Mountain Lion nor Mojave have affected the speed. It still runs super slow.
So, I bought a case for my old hard drive, plugged that in and booted the computer using the old hard drive using USB 3.0 to rule out the SATA cable. No change in speed. It’s even slower.
I have enabled TRIM, reset PRAM, reset SMC, tried to boot apple diagnostic pressing d or Shift + D but my computer is no longer supported, start up in safe mode using shift but there is no change.
Checked the activity monitor for both the HDD and SSD and the kernal_task is running extremely high. It never falls below 600%. This is on a clean install. Besides Mac Fan Control to lower the fan speed (it’s set to take the temperature from the SSD which seems to work), there isn’t really anything I have installed on the computer.
I’m attaching the EtreCheck, and some screenshots but hoping someone can point me in the right direction. Willing to open my iMac back up, but not sure what to do.
Really appreciate the help in advance
hope this pastes ok.
EtreCheck version: 5.5.5 (5111)
Report generated: 2020-06-13 15:19:49
'''Download EtreCheck from https://etrecheck.com'''
Full drive access: Disabled
Problem: Computer is too slow
Anything that appears on this list needs immediate attention.
No Time Machine backup - Time Machine backup not found.
Runaway process - A process is using a large percentage of your CPU.
Poor performance - EtreCheck report shows poor performance. This is unusual.
Software performance problems - Software seems to be causing performance problems.
These issues do not need immediate attention but they may indicate future problems or opportunities for improvement.
32-bit Apps - This machine has 32-bits apps will not work on macOS 10.15 "Catalina".
Limited drive access - More information may be available with Full Drive Access.
iMac (27-inch, Late 2012)
iMac Model: iMac13,2
3.4 GHz Intel Core i7 (i7-3770) CPU: 4-core
24 GB RAM - Upgradeable
BANK 0/DIMM0 - 8 GB DDR3 1600
BANK 1/DIMM0 - 8 GB DDR3 1600
BANK 0/DIMM1 - 4 GB DDR3 1600
BANK 1/DIMM1 - 4 GB DDR3 1600
NVIDIA GeForce GTX 680MX - VRAM: 2 GB
iMac 2560 x 1440
disk0 - CT2000MX500SSD1 2.00 TB (Solid State - TRIM: Yes)
Internal SATA 6 Gigabit Serial ATA
disk0s1 - EFI (MS-DOS FAT32) [EFI] 210 MB
disk0s2 [APFS Container] 2.00 TB
disk1 [APFS Virtual drive] 2.00 TB (Shared by 4 volumes)
disk1s1 - I****x (APFS) (Shared - 16.38 GB used)
disk1s2 - Preboot (APFS) [APFS Preboot] (Shared)
disk1s3 - Recovery (APFS) [Recovery] (Shared)
disk1s4 - VM (APFS) [APFS VM] (Shared - 2.15 GB used)
disk1s1 - I****x
2.00 TB (Shared - 16.38 GB used, 1.98 TB free)
Mount point: /
disk1s4 - VM [APFS VM] 2.00 TB (Shared - 2.15 GB used, 1.98 TB free) APFS Mount point: /private/var/vm
Interface Bluetooth-Modem: Bluetooth DUN
Interface en0: Ethernet
Interface en1: Wi-Fi
Interface en2: Bluetooth PAN
Interface bridge0: Thunderbolt Bridge
macOS Mojave 10.14.6 (18G103)
Time since boot: About an hour
Notifications not available without Full Drive Access.
System Integrity Protection: Enabled
Antivirus software: Apple
One 32-bit app
System Launch Agents:
[Not Loaded] 15 Apple tasks
[Loaded] 180 Apple tasks
[Running] 105 Apple tasks
System Launch Daemons:
[Not Loaded] 38 Apple tasks
[Loaded] 178 Apple tasks
[Running] 118 Apple tasks
[Other] One Apple task
[Running] com.crystalidea.macsfancontrol.smcwrite.plist (Ilya Parniuk - installed 2020-06-13)
User Internet Plug-ins:
User Internet Plug-ins need Full Drive Access
AppleTimeSyncAudioClock: 1.0 (Apple - installed 2019-09-20)
BluetoothAudioPlugIn: 6.0.14 (Apple - installed 2019-09-20)
AirPlay: 2.0 (Apple - installed 2019-09-20)
AppleAVBAudio: 760.6 (Apple - installed 2019-09-20)
BridgeAudioSP: 5.52 (Apple - installed 2019-09-20)
iSightAudio: 7.7.3 (Apple - installed 2019-09-20)
User Audio Plug-ins:
User Audio Plug-ins need Full Drive Access
User iTunes Plug-ins:
User iTunes Plug-ins need Full Drive Access
Time Machine Not Configured!
One local snapshot
Oldest local snapshot: 2020-06-13 12:50:32
Last local snapshot: 2020-06-13 12:50:32
System Load: 13.00 (1 min ago) 13.45 (5 min ago) 13.52 (15 min ago)
Nominal I/O speed: 1.16 MB/s
File system: 121.53 seconds (timed out)
Write speed: 112 MB/s
Read speed: 137 MB/s
CPU Usage Snapshot:
System: 85 %
User: 5 %
Idle: 10 %
Top Processes Snapshot by CPU:
Process (count) CPU (Source - Location)
Other processes 705.26 % (?)
EtreCheck 9.32 % (App Store)
Activity Monitor 5.45 % (Apple)
Macs Fan Control 0.28 % (Ilya Parniuk)
Dock 0.10 % (Apple)
Top Processes Snapshot by Memory:
Process (count) RAM usage (Source - Location)
EtreCheck 453 MB (App Store)
Finder 84 MB (Apple)
Spotlight 68 MB (Apple)
accountsd 68 MB (Apple)
NotificationCenter 60 MB (Apple)
Top Processes Snapshot by Network Use:
Process Input / Output (Source - Location)
Other processes 97 KB / 13 KB (?)
SystemUIServer 0 B / 64 B (Apple)
mdworker_shared 0 B / 0 B (Apple)
backgroundtaskmanagementagent 0 B / 0 B (Apple)
cfprefsd 0 B / 0 B (Apple)
Virtual Memory Information:
Physical RAM: 24 GB
Free RAM: 17.06 GB
Used RAM: 4.04 GB
Cached files: 2.91 GB
Available RAM: 19.96 GB
Swap Used: 0 B
Software Installs (past 30 days):
Install Date Name (Version)
2020-06-12 OS X (10.8.5 (12F45))
2020-06-12 macOS Mojave (14.6.01)
2020-06-12 SU_TITLE (10.14.6.1.1.1569030045)
2020-06-13 XProtectPlistConfigData (2123)
2020-06-13 CompatibilityNotificationData (1.0.6)
2020-06-13 Gatekeeper Configuration Data (181)
2020-06-13 MRTConfigData (1.62)
2020-06-13 EtreCheck (5.5.5)
Diagnostics Information (past 7-30 days):
Directory /Library/Logs/DiagnosticReports is not accessible.
Enable Full Drive Access to see more information.
End of report
Is this a good question?