Comment 9 for bug 1515921

After some investigation, this is due to lightdm hard coding an option passed to unity-system-compositor to enable the hardware cursor. Since Unity 8 now provides its own cursor, this option is no longer needed.

I opened a new bug against lightm to specifically disable the "--enable-hardware-cursor=true" option. I think it's best to dup this bug to that bug (bug #1517615).