Comment 0 for bug 1708480

Upon upgrading to 17.04 (also confirmed in 17.10), heavy, almost constant screen tearing presents itself immediately at the graphical or text splash page (i.e., before the operating system loads). The tearing continues after reaching the lock screen and logging in. The tearing is nearly constant, stopping only for certain actions like using the mouse or typing.

The screen tearing can be "fixed" by issuing i915.enable_rc6=0 in the boot parameter. However, this is a false fix as it turns off important power management functions and, as a consequence, the fan runs constantly and on high.