Unverified Commit 444a9256 authored by Armin Wolf's avatar Armin Wolf Committed by Ilpo Järvinen
Browse files

platform/x86: acer-wmi: Ignore backlight event 



On the Acer Nitro AN515-58, the event 4 - 0 is send by the ACPI
firmware when the backlight up/down keys are pressed. Ignore this
event to avoid spamming the kernel log with error messages, as the
acpi-video driver already handles brightness up/down events.

Reported-by: default avatarBugaddr <Bugaddr@protonmail.com>
Closes: https://bugaddr.tech/posts/2025-11-16-debugging-the-acer-nitro-5-an515-58-fn-f10-keyboard-backlight-bug-on-linux/#wmi-interface-issues


Tested-by: default avatarBugaddr <Bugaddr@protonmail.com>
Signed-off-by: default avatarArmin Wolf <W_Armin@gmx.de>
Link: https://patch.msgid.link/20251117155938.3030-1-W_Armin@gmx.de


Reviewed-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: default avatarIlpo Järvinen <ilpo.jarvinen@linux.intel.com>
parent d8bb447e

drivers/platform/x86/acer-wmi.c

+4 −0
Original line number Diff line number Diff line
@@ -102,6 +102,7 @@ MODULE_ALIAS("wmi:676AA15E-6A47-4D9F-A2CC-1E6D18D14026"); 


enum acer_wmi_event_ids {

	WMID_HOTKEY_EVENT = 0x1,

	WMID_BACKLIGHT_EVENT = 0x4,

	WMID_ACCEL_OR_KBD_DOCK_EVENT = 0x5,

	WMID_GAMING_TURBO_KEY_EVENT = 0x7,

	WMID_AC_EVENT = 0x8,
@@ -2369,6 +2370,9 @@ static void acer_wmi_notify(union acpi_object *obj, void *context) 
			sparse_keymap_report_event(acer_wmi_input_dev, scancode, 1, true);

		}

		break;

	case WMID_BACKLIGHT_EVENT:

		/* Already handled by acpi-video */

		break;

	case WMID_ACCEL_OR_KBD_DOCK_EVENT:

		acer_gsensor_event();

		acer_kbd_dock_event(&return_value);