Comment 12 for bug 1318040

Still facing the issue with kernel 4.2.0-23-generic, gcc version 5.2.1 20151010 (Ubuntu 5.2.1-22ubuntu2), bbswitch-dkms 0.7-2ubuntu1, no bumblebee package installed. I attach a full dmesg (from kern.log) from the boot to the freeze. After booting, I logged into tty1 and entered the following commands:
sudo service sdsm stop
sudo rmmod nouveau
sudo modprobe bbswitch load_state=0
sudo service sdsm start
Ctrl-Alt-F7 and closed the lid