Ubuntu wants to enable TRIM for SSDs by default in Ubuntu 14.04. In other words, Ubuntu isn’t already using TRIM, so your SSD is slowing down over time. But why isn’t Ubuntu already using TRIM?
This news will likely come as a surprise to many people, who assumed that Ubuntu and other Linux distributions were already using TRIM. TRIM prevents SSDs from slowing down over time and is a necessary part of SSD maintenance.
Full article here:
Ubuntu Doesn’t TRIM SSDs By Default: Why Not and How To Enable It Yourself (How-To Geek)