Dell OptiPlex 9020M is a micro PC desktop that has no built-in
LCD panel and it's acpi_video does not work.
Signed-off-by: Alex Hung <alex.hung@xxxxxxxxxxxxx>
---
drivers/acpi/video_detect.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c
index d179e8d..601e5d3 100644
--- a/drivers/acpi/video_detect.c
+++ b/drivers/acpi/video_detect.c
@@ -103,6 +103,12 @@ static int video_detect_force_native(const struct dmi_system_id *d)
return 0;
}
+static int video_detect_force_none(const struct dmi_system_id *d)
+{
+ acpi_backlight_dmi = acpi_backlight_none;
+ return 0;
+}
+
static const struct dmi_system_id video_detect_dmi_table[] = {
/* On Samsung X360, the BIOS will set a flag (VDRV) if generic
* ACPI backlight device is used. This flag will definitively break
@@ -313,6 +319,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "Precision 7510"),
},
},
+ {
+ .callback = video_detect_force_none,
+ .ident = "Dell OptiPlex 9020M",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
+ DMI_MATCH(DMI_PRODUCT_NAME, "OptiPlex 9020M"),
+ },
+ },
{ },
};
--
2.7.4
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