There is a patch now that is expected to be in kernel version 5.13. If you're willing to build your own kernel, you can find the patch here and do it yourself:
https://github.com/thesofproject/linux/issues/2748 ** Bug watch added: github.com/thesofproject/linux/issues #2748 https://github.com/thesofproject/linux/issues/2748 -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to alsa-driver in Ubuntu. https://bugs.launchpad.net/bugs/1857198 Title: alsa ALC285 Missing still, No Sound Lenovo Ideapad S740 Status in alsa-driver package in Ubuntu: Expired Bug description: cat /proc/asound/card0/codec* | grep Codec I tired all the possible trouble shooting and firmware and kernel, Current Kernel : 5.0.0-37-generic Problem : If I connect Headphone or any 3.5 Jack device it works perfectly but my laptop speakers are not working still. Please help. For more info below link has more info for my device http://alsa-project.org/db/?f=581ebad190e03c379ea87ce08d6b365e1cfe4580 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1857198/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
