Commit 5ede9020 authored by Sofia Schneider's avatar Sofia Schneider Committed by Rafael J. Wysocki
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ACPI: OSI: Add DMI quirk for Acer Aspire One D255 



The screen backlight turns off during boot (specifically during udev device
initialization) when returning true for _OSI("Windows 2009").

Analyzing the device's DSDT reveals that the firmware takes a different
code path when Windows 7 is reported, which leads to the backlight shutoff.
Add a DMI quirk to invoke dmi_disable_osi_win7 for this model.

Signed-off-by: default avatarSofia Schneider <sofia@schn.dev>
Link: https://patch.msgid.link/20260223025240.518509-1-sofia@schn.dev


Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent 6de23f81

drivers/acpi/osi.c

+13 −0
Original line number Diff line number Diff line
@@ -389,6 +389,19 @@ static const struct dmi_system_id acpi_osi_dmi_table[] __initconst = { 
		},

	},



	/*

	 * The screen backlight turns off during udev device creation

	 * when returning true for _OSI("Windows 2009")

	 */

	{

	.callback = dmi_disable_osi_win7,

	.ident = "Acer Aspire One D255",

	.matches = {

		     DMI_MATCH(DMI_SYS_VENDOR, "Acer"),

		     DMI_MATCH(DMI_PRODUCT_NAME, "AOD255"),

		},

	},



	/*

	 * The wireless hotkey does not work on those machines when

	 * returning true for _OSI("Windows 2012")