Note to testers: While investigating this bug, I discovered that "acpi_backlight=video" is actually non-functional (see LP: #573120). Even with that problem fixed acpi_backlight=video does not fix the brightness controls on the Dell Studio laptop. My investigation continues.
Note to testers: While investigating this bug, I discovered that "acpi_backlight =video" is actually non-functional (see LP: #573120). Even with that problem fixed acpi_backlight= video does not fix the brightness controls on the Dell Studio laptop. My investigation continues.