Hello ! I've seen a few patches fixing bass speaker problem for new Lenovo (written by Philipp Jungkamp and later by Pascal Gross), for example this line in linux/sound/pci/hda/patch_realtek.c: SND_PCI_QUIRK(0x17aa, 0x3801, "Lenovo Yoga9 14IAP7", ALC287_FIXUP_YOGA9_14IAP7_BASS_SPK_PIN) Could you please add this line for a similar model with the same Problem? SND_PCI_QUIRK(0x17aa, 0x3882, "Lenovo Yoga Pro 7 14APH8", ALC287_FIXUP_YOGA9_14IAP7_BASS_SPK_PIN), I do not have experience in writing kernel patches so I hope I will not irritate you with this letter. Thanks! Yevhen Hrubiian