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Fri, 28 Feb 2025 16:14:22 +0100 Date: Fri, 28 Feb 2025 16:14:20 +0100 From: Peter Seiderer To: Christian Heusel Cc: Ming Yen Hsieh , stable@vger.kernel.org, Benjamin Xiao , linux-kernel@vger.kernel.org, regressions@lists.linux.dev, linux-mediatek@lists.infradead.org, linux-wireless@vger.kernel.org Subject: Re: [REGRESSION][BISECTED][STABLE] MT7925 wifi throughput halved with 6.13.2 Message-ID: <20250228161420.11ac4696@gmx.net> In-Reply-To: References: X-Mailer: Claws Mail 4.3.0 (GTK 3.24.48; x86_64-suse-linux-gnu) Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable X-Provags-ID: V03:K1:i4T6/EbgFwr0KfP3Z8OoxJOOCwMntS0pNgUxOQPDz3qE9Yunna5 yYQNNRVMcrb1ujz1h5zgD4pXfZ1i8xNE7W6i+TJ0OO33ufyZIGS1/nhLPDOIe23ricKukSR 1qDvL/xABENHxxZA8JvW6kqQSRqQuPsXVMpycxZsHxxFH8UwvS9sguMgMBlKmJ3Fz4sIJ3d fQ7K0RFosbpTR+RpA0zBQ== X-Spam-Flag: NO UI-OutboundReport: notjunk:1;M01:P0:vn2tnnWN6Fo=;Rtv/w94WvvtCQ5op19orjFAa30U 3/hYOSUd6X+HGBVZrfzjiABuAhXF6qPtrF7qCQ4WvrTat3V1//t2hbwAj3iD23Pxd2WqFLrRG xoinsfikG+HgqUs3BquPocL8a/BlAUI4qmApFf+pqv2b9kQnL5FCUk8HCwoV6FenpgV8Tujdf EecoSvicsKHLt2A3sPGxevdSahVvaNXpBRnv4Rwcn7Ch0VJ02l0VjyanHBtAzm9JmNspPM7om KR4YCw8QsHKwfeEbVzTchIwfIwA3BBMO54dyszZ/tLA/dLqH+AU0ouKMSkvR+/YOSM85wT3x8 byv4nAVRXcL66DbuvXRLH8bLiYvjE3jOyZ1NW+xVq3eblxeg2kDlphTgSttQIojwKCblneQKi pe6vWpIVKIR59k8SLq16WoPqf+18xazwe76/N8n2IDv7TkcetZ0EuoxWtOv9jNPCOe3FgUI1g gH9GNM9ASR2fcBuSXrrUldLU04Oz6/awgmUM28TkEZH5wVLU6DKT/4jSBogjwcFIrXcgHxyF8 8LaV6GBRpinx7LD7NxZ+dSwgu4nj09EI9wztMitlwaGkT3w5sFVqLpsNejdqZnPlu6Cs0l6Pf RyhMm8uExhL+TOcpakXGe5Zxj6KwYEnUDJaT6aDy5TCZnjrbEjjzTz1rosbDNvl/Ri3xAGkHH JEmA0JJdD3G3ixtc13a7iJSQ8rkOEsYifUEmvgtfb5z84xXzJXC9HTPgsvldqIev7stf371YL mPzojRhlRZaKZV+LRv6dRJrHGJIIstipNcKKv2uwe5BIusoL6BGUG1uN42jxB6maPuNByfGnU 28jtym+mo5B/8+2NE6OU1OhVVNSro9Obqnxpi794YSjwBIUwqYhv2u0UD8MhYWYWV32oGJTtS CtDxm9jn5e1y0lEgjWc+UZKOi0CmMtVf/BAgX7sk5WQfGFimoLAPvXe2PiZ7oMg04fwk5NaeQ mVxJWc0WkFNQSb8X4vsFWwIX4O6dODzElS96VPJJsKWonUoX6Fb+GcMbBggtRwPk9zKzKvW2m f2zQePbJ3iOWdis6GfHhvS9ecVtFfqDVKjAwjSphKlt1zIoLqe1JryFtMI9lakiEyzfDZaLhb dQxy171z/vBuJfMESu9MyColPywNTxGs4KVnI/vvsZKF+MySy3HSRoLy5Ez5Du+tKfzFywlsv l8ubZmCtN5hoES/U6gNi6uL5mYuM22btrEncBUb/S/bAHAWuQLM8MKW/XY3XX97cYcsTHI5bk Nsh4HQfehWur5ZWEypRwdAEqs9fNnYymj11l+46BJ4O/RoAup3acw32SFfYbdlG6aGl6TQRA5 hEA9U4qSbNPzh3OlHE95RXquWq0CuKIHoBvGUsDePwvdFkuSqCp4F9cleyyd3EPDZxzC2rlmI +v9nMhumKfB+ikfrEzGLfVp4593hU/CfwsiTREyc3Yohche+bXp5kDhiEZ Hello Christian, On Fri, 28 Feb 2025 11:19:52 +0100, Christian Heusel = wrote: > Hello everyone, > > on the Arch Linux Bugtracker[1] Benjamin (also added in CC) reported > that his MT7925 wifi card has halved it's throughput when updating from > the v6.13.1 to the v6.13.2 stable kernel. The problem is still present > in the 6.13.5 stable kernel. > > We have bisected this issue together and found the backporting of the > following commit responsible for this issue: > > 4cf9f08632c0 ("wifi: mt76: mt7925: Update mt7925_mcu_uni_[tx,rx]_ba = for MLO") Seems there is already a suggested revert of the mentioned commit, see [PATCH v4 1/6] Revert "wifi: mt76: mt7925: Update mt7925_mcu_uni_[tx,rx]_= ba for MLO" https://lore.kernel.org/linux-wireless/20250226025647.102904-1-sean.wang@= kernel.org/#r Regards, Peter > > We unfortunately didn't have a chance to test the mainline releases as > the reporter uses the (out of tree) nvidia modules that were not > compatible with mainline release at the time of testing. We will soon > test against Mainline aswell. > > I have attached dmesg outputs of a good and a bad boot aswell as his > other hardware specs and will be available to debug this further. > > Cheers, > Christian > > [1]: https://gitlab.archlinux.org/archlinux/packaging/packages/linux/-/i= ssues/112