[Bug 222002] New: [BUG] alienware-wmi: Missing support for Alienware 16 Area-51 (AA16250) lighting controller (AW-ELC 187c:0551)

[Bug 222002] New: [BUG] alienware-wmi: Missing support for Alienware 16 Area-51 (AA16250) lighting controller (AW-ELC 187c:0551)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=222002

            Bug ID: 222002
           Summary: [BUG] alienware-wmi: Missing support for Alienware 16
                    Area-51 (AA16250) lighting controller (AW-ELC
                    187c:0551)
           Product: Drivers
           Version: 2.5
          Hardware: All
                OS: Linux
            Status: NEW
          Severity: enhancement
          Priority: P3
         Component: Platform_x86
          Assignee: drivers_platform_x86@kernel-bugs.osdl.org
          Reporter: adrienpantovich@gmail.com
        Regression: No

The alienware_wmi kernel module loads successfully on the 2026 Alienware 16
Area-51, but fails to bind or expose sysfs LED nodes for the built-in lighting
controller. Consequently, no lighting controls are available, and system
sleep/resume leaves the hardware stranded in an uninitialized ROM fallback
state (where only a single segment on the far left of the back bar
illuminates).

Hardware Details:
- Laptop Model: Alienware 16 Area-51 (AA16250)
- BIOS Version: 2.5.0 (06/09/2026)
- Lighting Controller: USB ID 187c:0551 (Alienware AW-ELC)
- Kernel Version: Linux 6.x series

DMI & Kernel Output:
[    0.000000] DMI: Alienware Alienware 16 Area-51 AA16250/0XYV46, BIOS 2.5.0
06/09/2026
[    1.958892] usb 3-2: Manufacturer: Alienware
[    1.975163] hid-generic 0003:187C:0551.0001: hiddev96,hidraw0: USB HID v1.11
Device [Alienware AW-ELC] on usb-0000:80:14.0-2/input0

Observed Behavior:
1. alienware_wmi initializes with a reference count of 0 because the board's
DMI string (AA16250) is unrecognized.
2. /sys/class/leds/ contains no entries related to Alienware lighting zones.
3. Upon waking from system sleep, the AW-ELC controller falls back to an
unconfigured state, lighting only a small section on the left side of the back
bar while the touchpad, logo, and remaining zones stay dark due to missing
driver register maps.

Steps to Reproduce:
1. Boot Linux on the Alienware 16 Area-51 (AA16250).
2. Inspect lsmod to verify alienware_wmi is loaded.
3. Check /sys/class/leds/ to observe the complete absence of Alienware control
interfaces.
4. Put the system to sleep and resume to see the partial fallback LED state.

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[Bug 222002] [BUG] alienware-wmi: Missing support for Alienware 16 Area-51 (AA16250) lighting controller (AW-ELC 187c:0551)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=222002

Armin Wolf (W_Armin@gmx.de) changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |W_Armin@gmx.de

--- Comment #1 from Armin Wolf (W_Armin@gmx.de) ---
The alienware-wmi driver does not handle the HID device responsible for the RGB
effects. Can you check if your device is compatible with Windows Dynamic
Lighting? If yes then you can control the RGB lighting using the LampArray HID
interface.

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[Bug 222002] [BUG] alienware-wmi: Missing support for Alienware 16 Area-51 (AA16250) lighting controller (AW-ELC 187c:0551)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=222002

--- Comment #2 from adrienpantovich@gmail.com (adrienpantovich@gmail.com) ---
(In reply to Armin Wolf from comment #1)
> The alienware-wmi driver does not handle the HID device responsible for the
> RGB effects. Can you check if your device is compatible with Windows Dynamic
> Lighting? If yes then you can control the RGB lighting using the LampArray
> HID interface.

I am not running windows on my laptop at all, but I figured out a way to change
all the RGB on it except for the keyboard which I'm still hung up on.

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[Bug 222002] [BUG] alienware-wmi: Missing support for Alienware 16 Area-51 (AA16250) lighting controller (AW-ELC 187c:0551)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=222002

--- Comment #3 from Armin Wolf (W_Armin@gmx.de) ---
Can you share the output of "acpidump"?

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[Bug 222002] [BUG] alienware-wmi: Missing support for Alienware 16 Area-51 (AA16250) lighting controller (AW-ELC 187c:0551)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=222002

--- Comment #4 from adrienpantovich@gmail.com (adrienpantovich@gmail.com) ---
Here is the output you requested. I am working on reverse engineering
a way to send information to the controller manually from dual-booting
windows and monitoring USBHID events that AWCC sends and receives to
the LED components. OpenRGB hasn't worked for me at all when I tried
installing it either, which is why I'm trying to do it myself lol.

On Tue, Sep 15, 2026 at 2:16 PM <bugzilla-daemon@kernel.org> wrote:
>
> https://bugzilla.kernel.org/show_bug.cgi?id=222002
>
> --- Comment #3 from Armin Wolf (W_Armin@gmx.de) ---
> Can you share the output of "acpidump"?
>
> --
> You may reply to this email to add a comment.
>
> You are receiving this mail because:
> You reported the bug.

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[Bug 222002] [BUG] alienware-wmi: Missing support for Alienware 16 Area-51 (AA16250) lighting controller (AW-ELC 187c:0551)

[bugzilla-daemon]

https://bugzilla.kernel.org/show_bug.cgi?id=222002

--- Comment #5 from Armin Wolf (W_Armin@gmx.de) ---
I am not sure if Openrgb already has support for HID LampArray, and to be
honest i have next to no experience with reverse-engineering USB HID devices.

I think the best place to get help with this is OpenRGB
(https://gitlab.com/CalcProgrammer1/OpenRGB/-/work_items/437).

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