** Description changed: - The EOAN kernel has alsa/sof driver, we need to enable SOF_HDA link and - codec, then the sof can work with legacy HDA driver to enable audio - output and input on LENOVO and DELL machines. + + [Impact] + We tested the EOAN kernel on the LENOVO or Dell machines which have + dmic directly connnected to PCH, the dmic didn't work. + + [Fix] + We need to enable SOF_HDA link and codec, then the sof driver + and Legacy HDA driver work together to make the dmic work. + + [Test Case] + Install the latest 19.10 image, build a new kernel with this + patch and replace the existing kernel, After installing the blacklist + package (blacklist snd_hda_intel and snd_soc_skl) and ucm package, + the dmic and all output devices (speaker/hdmi) work. + + [Regression Risk] + Low, these configs are already enabled in the oem-b-osp1 kernel + for a long time, and we tested it on many lenovo/dell machines witch + have or have no dmic, all worked well.
-- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1848490 Title: eoan: alsa/sof: Enable SOF_HDA link and codec Status in linux package in Ubuntu: Incomplete Bug description: [Impact] We tested the EOAN kernel on the LENOVO or Dell machines which have dmic directly connnected to PCH, the dmic didn't work. [Fix] We need to enable SOF_HDA link and codec, then the sof driver and Legacy HDA driver work together to make the dmic work. [Test Case] Install the latest 19.10 image, build a new kernel with this patch and replace the existing kernel, After installing the blacklist package (blacklist snd_hda_intel and snd_soc_skl) and ucm package, the dmic and all output devices (speaker/hdmi) work. [Regression Risk] Low, these configs are already enabled in the oem-b-osp1 kernel for a long time, and we tested it on many lenovo/dell machines witch have or have no dmic, all worked well. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1848490/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
