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[188.216.175.96]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-43d43f6befesm39885735e9.25.2025.03.20.00.49.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 20 Mar 2025 00:49:10 -0700 (PDT) Message-ID: <5e260035-1f1b-4444-b3b8-1b5757e5ed08@gmail.com> Date: Thu, 20 Mar 2025 08:49:09 +0100 Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: Regression: mt7921e unable to change power state from d3cold to d0 - 6.12.x broken, past LTS 6.6.x works To: Greg KH Cc: stable@vger.kernel.org, Linux Regressions References: <415e7c31-1e8d-499b-911e-33569c29ebe0@gmail.com> <2025031923-rocklike-unbitten-9e90@gregkh> Content-Language: en-US, it-IT From: Sergio Callegari In-Reply-To: <2025031923-rocklike-unbitten-9e90@gregkh> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Might be able to test on the distro built kernels that basically trace the releases and stable point releases. This should start helping bracketing the problem a bit better as a starter. But it is going to take a lot of time, since the issue happens when the machine fails to get out of hibernation, that is not always, and obvioulsy I need to try avoiding this situation as much as possible. Incidentally, the machine seems to hibernate-resume just fine. It is when I suspend-then-hibernate that I get the failures. Before contacting the network driver authors, I just wanted to query whether the issue is likely in it or in the power-management or pcie subsystems. Thanks, Sergio On 20/03/2025 00:54, Greg KH wrote: > On Wed, Mar 19, 2025 at 08:38:52PM +0100, Sergio Callegari wrote: >> There is a nasty regression wrt mt7921e in the last LTS series (6.12). If >> your computer crashes or fails to get out of hibernation, then at the next >> boot the mt7921e wifi does not work, with dmesg reporting that it is unable >> to change power state from d3cold to d0. >> >> The issue is nasty, because rebooting won't help. > > Can you do a 'git bisect' to track down the issue? Also, maybe letting > the network driver authors know about this would be good. > > thanks, > > greg k-h