[Bug 2167571] Re: [SRU] Fix excessive internal microphone gain causing noisy recordings on Yoga Pro 7

** Description changed: [ Impact ] The internal microphone on affected Yoga Pro 7 systems records with excessive background noise when mic volume is set to 100%. The gain is stuck at the maximum level (Amp-In 0x03 / 29.25 dB), which makes hiss/static clearly audible and impacts normal audio recording use. + + kernel: 7.0.0 + ubuntu: 24.04 or 26.04 + [ Test Plan ] 1. Boot an affected Yoga Pro 7 system with the SRU kernel. 2. Set internal mic volume to 100%. 3. Record audio with the internal microphone. 4. Verify the recording no longer has excessive hiss/static and the gain no longer stays pinned at Amp-In 0x03. [ Where problems could occur ] This change affects the codec gain path, so a regression could make the internal microphone too quiet or alter input levels on related audio paths. [ Other Info ] The upstream fix is already merged in Linux kernel commit 6cd3d2c82651a9e77aa5b1b9c12aa918c0d6c0a9. https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=6cd3d2c82651a9e77aa5b1b9c12aa918c0d6c0a9 -- You received this bug notification because you are subscribed to linux in Ubuntu. Matching subscriptions: Bgg, Bmail, Nb https://bugs.launchpad.net/bugs/2167571 Title: [SRU] Fix excessive internal microphone gain causing noisy recordings on Yoga Pro 7 Status in linux package in Ubuntu: New Bug description: [ Impact ] The internal microphone on affected Yoga Pro 7 systems records with excessive background noise when mic volume is set to 100%. The gain is stuck at the maximum level (Amp-In 0x03 / 29.25 dB), which makes hiss/static clearly audible and impacts normal audio recording use. kernel: 7.0.0 ubuntu: 24.04 or 26.04 [ Test Plan ] 1. Boot an affected Yoga Pro 7 system with the SRU kernel. 2. Set internal mic volume to 100%. 3. Record audio with the internal microphone. 4. Verify the recording no longer has excessive hiss/static and the gain no longer stays pinned at Amp-In 0x03. [ Where problems could occur ] This change affects the codec gain path, so a regression could make the internal microphone too quiet or alter input levels on related audio paths. [ Other Info ] The upstream fix is already merged in Linux kernel commit 6cd3d2c82651a9e77aa5b1b9c12aa918c0d6c0a9. https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=6cd3d2c82651a9e77aa5b1b9c12aa918c0d6c0a9 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2167571/+subscriptions