commit: 129ff8f8d58297b04f47b5d6fad81aa2d08404e1 From: Zhang Rui <rui.zh...@intel.com> Date: Tue, 4 Dec 2012 23:30:19 +0100 Subject: ACPI / video: ignore BIOS initial backlight value for HP Folio 13-2000
Or else the laptop will boot with a dimmed screen. References: https://bugzilla.kernel.org/show_bug.cgi?id=51141 Tested-by: Stefan Nagy <pub...@stefan-nagy.at> Signed-off-by: Zhang Rui <rui.zh...@intel.com> Cc: <stable@vger.kernel.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wyso...@intel.com> --- drivers/acpi/video.c | 14 ++++++++++++++ 1 files changed, 14 insertions(+), 0 deletions(-) diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 0230cb6..ac9a69c 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -389,6 +389,12 @@ static int __init video_set_bqc_offset(const struct dmi_system_id *d) return 0; } +static int video_ignore_initial_backlight(const struct dmi_system_id *d) +{ + use_bios_initial_backlight = 0; + return 0; +} + static struct dmi_system_id video_dmi_table[] __initdata = { /* * Broken _BQC workaround http://bugzilla.kernel.org/show_bug.cgi?id=13121 @@ -433,6 +439,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = { DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7720"), }, }, + { + .callback = video_ignore_initial_backlight, + .ident = "HP Folio 13-2000", + .matches = { + DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP Folio 13 - 2000 Notebook PC"), + }, + }, {} }; -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe stable" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
