Control: tags -1 - moreinfo
Control: tas -1 + upstream
Hi Facundo,
On Wed, Sep 30, 2026 at 09:01:58PM -0300, Facundo Gomez wrote:
> Hello,
>
> Thank you for the quick reply. I tested the patch and it fixes the problem
> on my laptop.
>
> What I did
> - Booted linux-image-6.12.111+deb13-amd64 (Debian 6.12.111-1).
> - Took drivers/hid/hid-asus.c from linux-source-6.12 6.12.111-1 and applied
> 0001-HID-asus-fortify-keyboard-handshake.patch (applied cleanly, with
> offsets of -1 and -2 lines).
> - Built only the hid_asus module against the installed headers, tested it
> first with rmmod/insmod, then installed it in
> /lib/modules/6.12.111+deb13-amd64/updates/ and regenerated the initramfs.
>
> Result
> - Keyboard: works now at the LightDM login screen (it did not before).
> - The "Asus failed to request functions: -75" and "Failed to initialize
> backlight." errors are gone, and /sys/class/leds/asus::kbd_backlight is
> registered.
> - Fn+F2/Fn+F3 (keyboard backlight brightness) work again.
>
> Without the patch (6.12.111):
> asus 0003:0B05:19B6.0003: Asus failed to request functions: -75
> asus 0003:0B05:19B6.0003: Failed to initialize backlight.
>
> With the patch (first test, module loaded by hand), a new non-fatal warning
> appears:
> asus 0003:0B05:19B6.0003: Asus handshake 5e returned invalid response:
> 5e ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 00 ... (rest zeros)
>
> Boot log with the patched module installed:
> facundo@ASUSROGG18:~$ sudo dmesg | grep -i "asus 0003"
> [sudo] contraseña para facundo:
> [ 2.248739] asus 0003:0B05:19B6.0003: Fixing up Asus N-Key report
> descriptor
> [ 2.249023] asus 0003:0B05:19B6.0003: using HID for asus::kbd_backlight
> [ 2.274413] asus 0003:0B05:19B6.0003: Asus handshake 5e returned invalid
> response: 5e ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff 00 00 00 00 00 00
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> [ 2.425178] asus 0003:0B05:19B6.0003: input,hiddev0,hidraw2: USB HID
> v1.10 Keyboard [ASUSTek Computer Inc. N-KEY Device] on
> usb-0000:69:00.3-1/input0
> [ 2.425588] asus 0003:0B05:19B6.0004: hiddev1,hidraw3: USB HID v1.10
> Device [ASUSTek Computer Inc. N-KEY Device] on usb-0000:69:00.3-1/input1
>
> Hardware, in case it is useful: ASUS ROG Strix G18 G814FP (BIOS
> G814FP.316), keyboard USB ID 0b05:19b6, bcdDevice 2.15.
>
> Please consider including e82ae34af29e ("HID: asus: fortify keyboard
> handshake") in the Debian 6.12 kernel, or confirm whether the stable series
> will pick it up. Feel free to forward this result upstream. I can test
> further kernels or patches if needed.
Perfect, thanks for testing. As mentioned here
https://lore.kernel.org/regressions/[email protected]/ the
fix has alrady been queued for 6.12.y. Although I will note on the
thread that you have a follow-up warning now.
Regards,
Salvatore
