![]() ![]() ![]() To install this kernel, download the two. This does fix the brightness keys on the Dell Studio 1558 and might also fix other i915 systems with backlight brightness control problems.Ī binary kernel including this PRELIMINARY TEST FIX (as well as the source patch) is available here: The fix will therefore affect all i915-based systems that support the opregion method not just Dell Studio systems. The fix involves overriding the use of the _BCM method with the Intel GPU i915 driver's opregion backlight control method. I have developed a PRELIMINARY TEST FIX for this problem, which is caused by a dysfunctional ACPI _BCM backlight brightness control method in the Dell Studio 1558 firmware (and likely the other 155x models). ![]()
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