Messages in this thread Patch in this message | | | From | Luis Henriques <> | Subject | [PATCH 31/93] ACPI video: ignore BIOS backlight value for HP dm4 | Date | Tue, 18 Jun 2013 12:42:39 +0100 |
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3.5.7.15 -stable review patch. If anyone has any objections, please let me know.
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From: Gustavo Maciel Dias Vieira <gustavo@sagui.org>
commit 771d09b3c4c45d4d534a83a68e6331b97fd82e15 upstream.
On a HP Pavilion dm4 laptop the BIOS sets minimum backlight on boot, completely dimming the screen. Ignore this initial value for this machine.
Signed-off-by: Gustavo Maciel Dias Vieira <gustavo@sagui.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com> Cc: Alex Hung <alex.hung@canonical.com> Signed-off-by: Luis Henriques <luis.henriques@canonical.com> --- drivers/acpi/video.c | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 3837739..f3b3027 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -447,6 +447,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = { DMI_MATCH(DMI_PRODUCT_NAME, "HP Folio 13 - 2000 Notebook PC"), }, }, + { + .callback = video_ignore_initial_backlight, + .ident = "HP Pavilion dm4", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dm4 Notebook PC"), + }, + }, {} }; -- 1.8.1.2
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