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84d56f326a
According to: https://bugzilla.kernel.org/show_bug.cgi?id=202401 the Sony Vaio VPCEH3U1E quirk was added to disable the acpi_video0 backlight interface because that was not working, so that userspace will pick the actually working native nv_backlight interface instead. With the new kernel behavior of hiding native interfaces unless acpi_video_get_backlight_type() returns native, the current video_detect_force_vendor quirk will cause the working nv_backlight interface will be disabled too. Change the quirk to video_detect_force_native to get the desired result of only registering the nv_backlight interface. After this all currently remaining force_vendor quirks in video_detect_dmi_table[] are there to prefer a vendor interface over a non working ACPI video interface, add a comment to document this. Signed-off-by: Hans de Goede <hdegoede@redhat.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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.