@gogolink, If you have tried those kernels and those kernels still failed, there is no need to reinstall those kernels.
Your machine is ab Icelake machine and we hasn't had a chance to enable the sof audio on an icelake machine before. I have no idea why the hdmi codec init fails. To debug this issue, we need to find the 1st workable kernel for this machine, for example, 5.7.0-rc1 not work, 5.7.0-rc2 work. So could you please test the mainline kernel to find the 1st workable kernel like: https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.6-rc3/ https://kernel.ubuntu.com/~kernel-ppa/mainline/v5.6-rc4/ ... -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1886341 Title: Kernel Regression between 5.4.0-26 and 5.4.0-40 causes laptop internal audio devices to fail to load w/o unacceptable workaround (Lenovo IdeaPad 5 15IIL05) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1886341/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
