Ubuntu
gnome-settings-daemon package

  1. Bug #1584457
  2. Comment #4

Comment 4 for bug 1584457

Revision history for this message
Sebastian Nohn (sebastian-nohn) wrote :

As a workaround, add

blacklist acpi_als

to

/etc/modprobe.d/blacklist.conf

From what I read, this auto brightness "feature" sucks anyway, so this may be the best whether you are affected by this bug or not.