linux-kernel - Re: Bug#1114557: [PATCH v2] HID: quirks: Add device descriptor for 4c4a:4155

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Message-ID: <638f3938581848a8ca0a6dcb981dfbdd@oscillator.se>
Date: Thu, 23 Oct 2025 15:10:08 +0200
From: Staffan Melin <staffan.melin@...illator.se>
To: Salvatore Bonaccorso <carnil@...ian.org>
Cc: zhangheng <zhangheng@...inos.cn>, 1114557@...s.debian.org, Linux Hid
 <linuxhid@...micgizmosystems.com>, jikos@...nel.org, bentiss@...nel.org,
 linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Bug#1114557: [PATCH v2] HID: quirks: Add device descriptor for
 4c4a:4155

Thank you Salvatore, for moving this forward.

I can add that the issue has been reported by several users on a GPD DUO 
channel on Discord -- all are on newer kernels but have different Linux 
distributions.

I can also confirm that the patch does solve my problem. Looking forward 
to some resolution of this, as it stops me from upgrading to Testing. :)

Best regards,

Staffan


On 2025-10-22 08:04, Salvatore Bonaccorso wrote:
> Hi,
> 
> On Mon, Oct 13, 2025 at 04:32:39PM +0800, zhangheng wrote:
>> It happened to be the holiday, so communication was a bit troublesome.
>> 
>> However, after a brief discussion with the microphone manufacturer,
>> 
>> it was found that the serial number was still 20201111000001 on 
>> another
>> 
>> microphone device. So, should we add it?
> 
> As this issue still affects one of our users in Debian, is there
> anything which can be done to unblock the situation? Does that mean
> that the proposed patch is not good for the microphone device?
> 
> My understanding is that it fixes at least Staffan's case which
> regressed from 1a8953f4f774 ("HID: Add IGNORE quirk for
> SMARTLINKTECHNOLOGY").
> 
> Regards,
> Salvatore