From: "Michał Pecio" <michal.pecio@gmail.com>
To: chkr@plauener.de
Cc: linux-usb@vger.kernel.org
Subject: Re: Different speed of USB control transfers for HS USB devices depending on used USB port
Date: Mon, 9 Dec 2024 23:03:25 +0100 [thread overview]
Message-ID: <20241209230325.5a683364@foxbook> (raw)
In-Reply-To: <CAJugSwwpWKFbniGkdDCcGtKAbeYhoCsP=rMdmfaWGdFiFGEB0g@mail.gmail.com>
Hi,
I see obvious pattern that the bad ports are bus 001 and the good port
is bus 003, and they are two different chips.
Do you see similar correlation with chip types on other motherboards?
You can see the mapping between bus numbers and controllers using
ls -l /sys/bus/usb/devices/usb*
Generally, with xHCI it's on the controller to packetize and schedule
such transfers, so this is likey a hardware problem.
Regards,
Michal
next prev parent reply other threads:[~2024-12-09 22:03 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-12-09 18:19 Different speed of USB control transfers for HS USB devices depending on used USB port Christian Krause
2024-12-09 22:03 ` Michał Pecio [this message]
2024-12-10 17:18 ` Christian Krause
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