From: Kirill Tkhai <tkhai@yandex.ru>
To: linux-acpi@vger.kernel.org
Cc: rjw@rjwysocki.net
Subject: [PATCH] ACPI: video: Ignore BIOS initial backlight value for HP 250 G1
Date: Fri, 18 Oct 2013 15:56:44 +0400 [thread overview]
Message-ID: <100851382097404@web21g.yandex.ru> (raw)
On HP 250 G1 laptops, BIOS reports minimum backlight on boot and
causes backlight to dim completely. This ignores the initial backlight
values and set to max brightness.
Reference: https://bugzilla.kernel.org/show_bug.cgi?id=63111
Signed-off-by: Kirill Tkhai <tkhai@yandex.ru>
---
drivers/acpi/video.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index 3270d3c..6456466 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -490,6 +490,14 @@ static struct dmi_system_id video_dmi_table[] __initdata = {
DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion m4 Notebook PC"),
},
},
+ {
+ .callback = video_ignore_initial_backlight,
+ .ident = "HP 250 G1",
+ .matches = {
+ DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "HP 250 G1 Notebook PC"),
+ },
+ },
{}
};
next reply other threads:[~2013-10-18 11:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-18 11:56 Kirill Tkhai [this message]
2013-10-28 3:24 ` [PATCH] ACPI: video: Ignore BIOS initial backlight value for HP 250 G1 Aaron Lu
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