Test Dell Inspiron 7591 on bionic. 1. sudo apt dist-upgrade 2. sudo reboot
not alsa card, show 'Dummy output' in gnome-control-center 4. add proposed source list 5. sudo apt update 6. sudo apt install linux-firmware 7. sound card is appeared in gnome-control-center [test] speaker + DMIC: ok headset input + headset output: ok -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1875263 Title: linux-firmware: missing sof-cfl.ri symbol link for Bionic and Eoan To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1875263/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs