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[83.28.46.53]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b9b7b227393sm175930966b.63.2026.03.29.08.40.26 (version=TLS1_2 cipher=AES128-SHA bits=128/128); Sun, 29 Mar 2026 08:40:26 -0700 (PDT) Date: Sun, 29 Mar 2026 17:40:22 +0200 From: Michal Pecio To: Jeffrey Hein Cc: Laurent Pinchart , Hans de Goede , Greg Kroah-Hartman , linux-media@vger.kernel.org, linux-usb@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH 0/3] USB/UVC: Add quirks to prevent Razer Kiyo Pro xHCI cascade failure Message-ID: <20260329174022.6513d797.michal.pecio@gmail.com> In-Reply-To: References: <20260321223713.1219297-1-jp@jphein.com> <20260322055354.03399a32.michal.pecio@gmail.com> <20260323085845.6bf57b3b.michal.pecio@gmail.com> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit On Sun, 29 Mar 2026 08:03:42 -0700, Jeffrey Hein wrote: > I have now tested on 6.17.0-19-generic (Ubuntu 25.04) with dynamic > debug enabled for xhci_hcd and usbcore, and without any of my proposed > patches or workarounds applied. No udev quirks, no LPM disable, no > control throttle -- completely stock kernel. > > Results: the stress test passes 50/50 rounds with 0ms delay. On > 6.8.0-106-generic the same test crashed consistently around round 25. Thanks for the update, that's good to hear. Hopefully it will still work without dynamic debug too. If you would want to fix the old 6.8 kernel you will need to talk with Ubuntu about it, because that version is no longer supported upstream. Regards, Michal