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@xxxxxxxxx> --- 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"), + }, + }, {} }; -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
