From: WGH <da-wgh@ya.ru>
To: Oliver Neukum <oneukum@suse.com>,
andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com,
kuba@kernel.org, pabeni@redhat.com, linux-usb@vger.kernel.org,
netdev@vger.kernel.org,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: cdc_ncm doesn't detect link unless ethtool is run (ASIX AX88179B)
Date: Mon, 17 Nov 2025 15:44:52 +0300 [thread overview]
Message-ID: <45655b89-14db-4cae-b92f-118b7cbd8586@ya.ru> (raw)
In-Reply-To: <701e5678-a992-45be-9be3-df68dfe14705@suse.com>
On 11/15/25 15:33, Oliver Neukum wrote:
> On 15.11.25 09:58, WGH wrote:
>> Hello.
>>
>> I'm running Linux 6.17.7, and recently obtained a UGREEN 6 in 1 hub containing an AX88179B chip.
>>
>> By default, it uses the generic cdc_ncm driver, and it works mostly okay.
>>
>> The annoying problem I have is that most of the time the kernel doesn't notice that the link is up. ip link reports NO-CARRIER, network management daemon doesn't configure the interface, and so on.
>
> Hi,
>
> that strongly points to a race condition.
> Could you try the attached diagnostic patch?
>
> Regards
> Oliver
Nope, this patch doesn't help.
prev parent reply other threads:[~2025-11-17 12:50 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-15 8:58 cdc_ncm doesn't detect link unless ethtool is run (ASIX AX88179B) WGH
2025-11-15 12:33 ` Oliver Neukum
2025-11-17 12:44 ` WGH [this message]
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