I have reverted back to Freya with a fresh install due to kernel/display incompatibility with Loki on my machine. Now, on Freya, when I updated in response to a warning regarding Hardware Enablement Stake. But after that, my mouse is invisible when I resume from suspend moreover, sometimes login screen don't show/unresponsive. I will be thankful if someone suggests a solution and which package creating this mess.
The best solution is to upgrade to Loki. Loki contains a newer hardware support stack including a new Intel driver that doesn't have the mouse cursor issue.