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ACPI / video: ignore BIOS initial backlight value for Fujitsu E753
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The BIOS of FUjitsu E753 reports an incorrect initial backlight value
for WIN8 compatible OS, causing backlight to be dark during startup.
This change causes the incorrect initial value from BIOS to be ignored.

References: https://bugzilla.kernel.org/show_bug.cgi?id=60161
Reported-and-tested-by: Jan Hinnerk Stosch <janhinnerk.stosch@gmail.com>
Signed-off-by: Lan Tianyu <tianyu.lan@intel.com>
Cc: 3.7+ <stable@vger.kernel.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
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Lan Tianyu authored and Rafael J. Wysocki committed Jul 18, 2013
1 parent 3c0fc07 commit 9657a56
Showing 1 changed file with 8 additions and 0 deletions.
8 changes: 8 additions & 0 deletions drivers/acpi/video.c
Original file line number Diff line number Diff line change
Expand Up @@ -448,6 +448,14 @@ 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 = "Fujitsu E753",
.matches = {
DMI_MATCH(DMI_BOARD_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E753"),
},
},
{
.callback = video_ignore_initial_backlight,
.ident = "HP Pavilion dm4",
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