Dell XPS 13 9350 with Ubuntu 15.10 - Touchpad freezing, jumping [duplicate]

The problem is the graphics card, you need to force it into high power mode otherwise when it starts switching between modes, the cursor pauses. Also happens when you scroll, etc.

https://wiki.ubuntu.com/Kernel/PowerManagement/PowerSavingTweaks

Enable Intel i915 RC6

NOTE: If you are running 12.04 LTS ("Precise"), this is already enabled by default.

The Intel i915 RC6 feature allows the Graphics Processing Unit (GPU) to > enter a lower power state during GPU idle. The i915 RC6 feature applies > to Intel Sandybridge and later processors. RC6 was switched between enabled and disabled earlier in the Ubuntu 12.04 Precise LTS development > cycle, but eventually all problems were fixed and it is now enabled by default.

On Ubuntu 11.10 and earlier, you need to enable it manually: edit /etc/default/grub (you need superuser privilege to do this)

change:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

to:

GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.i915_enable_rc6=1"

and run:

sudo update-grub

And reboot.