The "i915-enable-backlight" kernel PPA has been moved to: https://launchpad.net/~kamalmostafa/+archive/dellxps and includes additional fixes relevant to Dell XPS 13z and XPS 15z.
The "i915-enable- backlight" kernel PPA has been moved to: https:/ /launchpad. net/~kamalmosta fa/+archive/ dellxps and includes additional fixes relevant to Dell XPS 13z and XPS 15z.