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ACPI: video: use ACPI backlight for HP 635 Notebook
commit b226faa upstream. The default backlight interface is AMD's radeon_bl0 which does not work on this system, so use the ACPI backlight interface on it instead. BugLink: https://bugs.launchpad.net/bugs/1894667 Cc: All applicable <stable@vger.kernel.org> Signed-off-by: Alex Hung <alex.hung@canonical.com> [ rjw: Changelog edits ] Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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