Hi,
I have been trying since my post to follow all the guidance provided on troubleshooting issues after installing Big Sur but in vain. I ran a Etrecheck diagnostic to find out a bit more about potential root causes.
See attached. I'm not sure what to do next: :-( Thx for the community support.
EtreCheck version: 5.6.4 (5222)
Report generated: 2020-12-26 18:32:13
Download EtreCheck from https://etrecheck.com
Runtime: 1:51
Performance: Excellent
Sandbox: Enabled
Full drive access: Enabled
Problem: Other problem
Description:
After upgrading from Mac OS Catalina to Big Sur, my Mac Book pro start
ed to experienced overheating and battery quick drainage.
Major Issues:
Anything that appears on this list needs immediate attention.
Runaway process - A process is using a large percentage of your CPU.
Minor Issues:
These issues do not need immediate attention but they may indicate future problems or opportunities for improvement.
No Time Machine backup - Time Machine backup not found.
Apps with heavy CPU usage - There have been numerous cases of apps with heavy CPU usage.
Unsigned files - There are unsigned software files installed. Apple has said that unsigned software will not run by default in a future version of the operating system.
Hardware Information:
MacBook Pro (13-inch, 2019, Two Thunderbolt 3 ports)
MacBook Pro Model: MacBookPro15,4
1.4 GHz Quad-Core Intel Core i5 (i5-8257U) CPU: 4-core
8 GB RAM - Not upgradeable
BANK 0/ChannelA-DIMM0 - 4 GB LPDDR3 2133
BANK 2/ChannelB-DIMM0 - 4 GB LPDDR3 2133
Battery: Health = Normal - Cycle count = 130