I have SSD on my computer. before when I use Ubuntu I always do :
sudo nano /etc/cron.weekly/fstrim
And add this command:
exec fstrim-all --no-model-check
The description in this file states that "This only runs on Intel and Samsung SSDs by default", but after I install fresh Ubuntu 15.04 my file /cron.weekly/fstrim looks different. There is no info about "no-model-check" so I understand that in new version fstrim it's the default for all SSD discs, and it's not necessary to add --no-model-check?
