Erich Eickmeyer, if you restore gnome to the default repository version (i.e. remove the GNOME3 PPA), and remove the following non-default kernel parameters is this reproducible in Utopic:
acpi_osi=Linux i915.invert_brightness=1
If so, to see if this is already fixed for your hardware could you please http://cdimage.ubuntu.com/daily-live/current/ (live environment is fine if the problem was also reproducible in a live environment) and advise if this is reproducible?
Erich Eickmeyer, if you restore gnome to the default repository version (i.e. remove the GNOME3 PPA), and remove the following non-default kernel parameters is this reproducible in Utopic: brightness= 1
acpi_osi=Linux i915.invert_
If so, to see if this is already fixed for your hardware could you please http:// cdimage. ubuntu. com/daily- live/current/ (live environment is fine if the problem was also reproducible in a live environment) and advise if this is reproducible?