diff options
| author | Sofia Schneider <sofia@schn.dev> | 2026-02-22 23:52:40 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2026-03-25 11:05:44 +0100 |
| commit | 486519660bd92216cf07ab42f8a2ae2073a508e3 (patch) | |
| tree | fec2b072d7f012536ca933cfa5119db280d9b768 /drivers/acpi | |
| parent | b006c61a5d972bce9921772c645f38eaaccaf1c2 (diff) | |
| download | linux-486519660bd92216cf07ab42f8a2ae2073a508e3.tar.gz linux-486519660bd92216cf07ab42f8a2ae2073a508e3.tar.bz2 linux-486519660bd92216cf07ab42f8a2ae2073a508e3.zip | |
ACPI: OSI: Add DMI quirk for Acer Aspire One D255
[ Upstream commit 5ede90206273ff156a778254f0f972a55e973c89 ]
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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/acpi')
| -rw-r--r-- | drivers/acpi/osi.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/acpi/osi.c b/drivers/acpi/osi.c index ae9620757865..600af8814038 100644 --- a/drivers/acpi/osi.c +++ b/drivers/acpi/osi.c @@ -390,6 +390,19 @@ 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") */ |