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([2a0d:6fc2:56d6:3b00:20f3:5417:1c06:8272]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-38a1c828ba0sm8086400f8f.14.2024.12.21.23.26.20 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sat, 21 Dec 2024 23:26:21 -0800 (PST) Message-ID: Date: Sun, 22 Dec 2024 09:26:19 +0200 Precedence: bulk X-Mailing-List: linux-sound@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [REGRESSION] Distorted sound on Acer Aspire A115-31 laptop To: Kailang , Linux Sound Mailing List Cc: Takashi Iwai , Linux Kernel Mailing List , Linux Regressions Mailing List , Linux Stable Mailing List References: <0625722b-5404-406a-b571-ff79693fe980@gmail.com> Content-Language: en-US From: Evgeny Kapun In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit > Headphone or Headset. Which did you use? > I don't know your platform has headset mic support or not. I use headphones (no mic). I suppose my laptop should support a mic, because there is an icon next to the headset socket which shows a headset with a mic. > Could you record sound via headphone? > > I want to know how the voice distortion. I've run some experiments to determine the nature of the distortions, and I found that on affected kernels, what I'm hearing is the difference between the left and the right channel of what is playing. So, if I play a mono sound, I hear nothing at all (or rather, almost nothing). If I manually mute one of the channels, I hear the sound normally (through both ears, while on older kernels muting individual channels actually works). If I invert one of the channels, I hear the sound normally as well. If I play a stereo sound (for example, a music track), I hear distortions.