Since you said Ubuntu 18.04 is broken and 18.10 works then we need to identify which kernel version fixed the problem. Per comment #7 we believe this is probably in the range v4.16-rc1 to v4.18-rc8.
I suggest starting around v4.17. Please download: https://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17/linux-headers-4.17.0-041700_4.17.0-041700.201806041953_all.deb https://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17/linux-headers-4.17.0-041700-generic_4.17.0-041700.201806041953_amd64.deb https://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17/linux-image-unsigned-4.17.0-041700-generic_4.17.0-041700.201806041953_amd64.deb https://kernel.ubuntu.com/~kernel-ppa/mainline/v4.17/linux-modules-4.17.0-041700-generic_4.17.0-041700.201806041953_amd64.deb and then install them: sudo dpkg -i *.deb and reboot. Now verify the new kernel version is active: uname -a and tell us if that has fixed the bug for Ubuntu 18.04. ** Also affects: linux (Ubuntu Bionic) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Bionic) Status: New => Incomplete ** Changed in: linux (Ubuntu) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1816429 Title: [bytcr-rt5651 - bytcr-rt5651, playback] Pulseaudio fails to detect card To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1816429/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
