For LCD fix
- if your qnap model has a LCD, edit the truenas script with elvis fix (this was for a ts-453a, so it may need some possible editting)
GitHub - elvisimprsntr/QnapFreeLCD: Scripts to display TrueNAS CORE information on QNAP LCD.
What does this do? Well here is an example
This is before (lcd can’t turn off and remains static 24/7). basically after installing truenas it breaks the LCD and makes it act like this. Some people suggested taping it over with dark tape, but i think we can do better 
after applying fix, it shows this after finishing bootup, then it turns off. Perfection 
basically you had to go into truenas commandline to apply the fix
all credits to elvis for solving the lcd issue. he is a truenas resident here
https://www.truenas.com/community/members/elvisimprsntr.96049/