Upgrade my laptop to Ubuntu 15.10. After I restart it freeze in Ubuntu logo.
I found out that I'm having problem with the new kernel (Linux 4.2.0-16-generic). If I use the 2nd version (Linux 3.19-generic) it boots properly.
When I tried removing Linux 4.2.0-16-generic and run sudo update-grub it always detects Linux 4.2.0-16-generic.
How would I make Linux 3.19-generic the default upon boot up? And/Or permanently remove Linux 4.2.0-16-generic?