Re: [PATCH 2/2] hid: asus: always fully initialize devices

[Denis Benato]

26 ott 2026 10:55:55 Sakari Ailus <sakari.ailus@xxxxxx>:

> Hi Benato,
>
> On Mon, Feb 16, 2026 at 06:55:39PM +0100, Denis Benato wrote:
>> ASUS has more devices other than laptop keyboards which needs
>> to be initializated: the init sequence is the same as keyboards.
>>
>> ID1 and ID2 are USB report IDs that are correctly enumerated:
>> send init commands to all devices that supports those reports IDs.
>>
>> Signed-off-by: Denis Benato <denis.benato@xxxxxxxxx>
>
> This patch appears to break input devices on Asus T100TA. With the patch
> applied, I'm getting a steady flow of:
>
> [  256.358075] usb 1-3: USB disconnect, device number 120
> [  257.034324] usb 1-3: new full-speed USB device number 121 using xhci_hcd
> [  257.175003] usb 1-3: New USB device found, idVendor=0b05, idProduct=17e0, bcdDevice= 2.49
> [  257.175050] usb 1-3: New USB device strings: Mfr=1, Product=2, SerialNumber=0
> [  257.175073] usb 1-3: Product: ASUS Base Station(T100)
> [  257.175091] usb 1-3: Manufacturer: ASUSTek COMPUTER INC.
> [  257.180978] input: ASUSTek COMPUTER INC. ASUS Base Station(T100) as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.0/0003:0B05:17E0.02DB/input/input749
> [  257.266585] asus 0003:0B05:17E0.02DB: input,hidraw1: USB HID v1.11 Keyboard [ASUSTek COMPUTER INC. ASUS Base Station(T100)] on usb-0000:00:14.0-3/input0
> [  257.270711] asus 0003:0B05:17E0.02DC: Fixing up Asus T100 keyb report descriptor
> [  257.272302] input: ASUSTek COMPUTER INC. ASUS Base Station(T100) as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.1/0003:0B05:17E0.02DC/input/input750
> [  257.327059] asus 0003:0B05:17E0.02DC: input,hiddev0,hidraw2: USB HID v1.11 Device [ASUSTek COMPUTER INC. ASUS Base Station(T100)] on usb-0000:00:14.0-3/input1
> [  257.332642] input: ASUSTek COMPUTER INC. ASUS Base Station(T100) as /devices/pci0000:00/0000:00:14.0/usb1/1-3/1-3:1.2/0003:0B05:17E0.02DD/input/input751
> [  257.334115] asus 0003:0B05:17E0.02DD: input,hiddev1,hidraw3: USB HID v1.11 Mouse [ASUSTek COMPUTER INC. ASUS Base Station(T100)] on usb-0000:00:14.0-3/input2
> [  257.336098] asus 0003:0B05:17E0.02DD: Asus handshake 5d failed to send: -71
> [  257.336263] asus 0003:0B05:17E0.02DD: Failed to initialize 0x5d: -71.
> [  257.336605] asus 0003:0B05:17E0.02DD: Asus failed to start multitouch: -71
> [  257.367022] asus 0003:0B05:17E0.02DD: probe with driver asus failed with error -71
> [  257.367917] usb 1-3: USB disconnect, device number 121
>
> I haven't tried to debug this yet so just FYI.
>

Hi Sakari,

Thanks for testing this! Is that device of yours a touchpad? This commit has been bugfixed before and the issue is related to report sizes being sent as 64 bytes (and also additional unsupported messages in the case of touchpads).

Can you try linux-next please? That has all bugfixes for already known problems.

Best regards,
Denis Benato

> --
> Kind regards,
>
> Sakari Ailus