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ACPI: OSI: Add DMI quirk for Acer Aspire One D255

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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: Sofia Schneider <sofia@schn.dev>
Link: https://patch.msgid.link/20260223025240.518509-1-sofia@schn.dev
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Sofia Schneider 2026-02-22 23:52:40 -03:00 • committed by Rafael J. Wysocki
parent 6de23f81a5
commit 5ede902062
1 changed files with 13 additions and 0 deletions
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13
drivers/acpi/osi.c
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@ -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")