I have been using sudo trimforce enable to use trim on my SSDs on my 5,1.
I disabled SIP to make few changes and had left it there. When I did a status check trim was disabled. repeating the command multiple times did not enable it. Booting from other partitions (High Sierra, Mohave 1014.1) showed it enabled. Clearing PRAM did not fix it.
I reinstalled 10.14.5 - no change.
I finally enabled SIP and rebooted and PRESTO, trim was enabled.
Weird, since earlier versions never showed this behavior.
I disabled SIP to make few changes and had left it there. When I did a status check trim was disabled. repeating the command multiple times did not enable it. Booting from other partitions (High Sierra, Mohave 1014.1) showed it enabled. Clearing PRAM did not fix it.
I reinstalled 10.14.5 - no change.
I finally enabled SIP and rebooted and PRESTO, trim was enabled.
Weird, since earlier versions never showed this behavior.