Comment 14 for bug 1507255

My comments on entry #13:
gedit 20-intel.conf
Copy in the lines starting with Section and ending with EndSection:
[code]
Section "Device"
   Identifier "Intel Graphics"
   Driver "intel"
   Option "AccelMethod" "uxa"
EndSection
[/code]
save
quit
sudo cp 20-intel.conf /usr/share/X11/xorg.conf.d
enter your password

Check to see if the entry made it into the directory O.K.:
cat /usr/share/X11/xorg.conf.d/20-intel.conf

Now /usr/share/X11/xorg.conf.d is read once on boot so you have to reboot for it to take effect.
What this configuration does is tell X11 to use the method "uxa" an older section of code, since on this pc the newer code "sna" screws up.

If this configuration doesn't work for you, then delete the 20-intel.conf entry in /usr/share/X11/xorg.conf.d

Now Xenial and Wily install .iso's are a real bear to read on this Lenovo M58p because of the garbled text. On finish of install, before I do a reboot, I use the install ubunto to make the conf.d entry into the target ubuntu install. That's a bit tricky.
Let us know how you do.