Comment 71 for bug 1492764

upgrading to the 4.3 kernel above fixed it for me on my dell 7737 , have been experiencing a lot of fan noise since this started and it doesn't seem to be going away. Using top shows all of my browser processes constantly in more that 4% system calls all the time.
i also have a laggy response to typing.

This is a massive regression from 15.04 where this laptop worked immaculately , this extra load feels like its damaging my laptop, it causes it not to start properly several times before i get a working desktop which cannot be right. I know there are big changes a foot but this is becoming unsuable , especially now you have hidden the boot process so i've no idea whats going on.

not happy with this regression and how little effort seems to be going into fixing it