[ Upstream commit 48436f2e9834b46b47b038b605c8142a1c07bc85 ] Linux defaults to picking the non-working ACPI video backlight interface on the Apple iMac11,3 . Add a DMI quirk to pick the working native radeon_bl0 interface instead. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Stable-dep-of: bd5d93df86a7 ("ACPI: video: Add backlight=native DMI quirk for Lenovo ThinkPad X131e (3371 AMD version)") Signed-off-by: Sasha Levin <sashal@kernel.org>
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Linux kernel ============ There are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. Please read Documentation/admin-guide/README.rst first. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. The formatted documentation can also be read online at: https://www.kernel.org/doc/html/latest/ There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.
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