Thanks for this. I tried it with your Hdmi.conf from v4. I could boot up to the login screen. After seeing the login GUI screen for a few seconds, the system just freezes (no longer responds to mouse and keyboard input). Attaching dmesg.0. I guess there is some file system check or something else that gets executed at that moment and disrupts the whole boot sequence.
** Attachment added: "dmesg.0" https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1874698/+attachment/5368568/+files/dmesg.0 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1874698 Title: [OMEN by HP Laptop 15-dh0xxx, Realtek ALC285, Black Mic, Left] Recording problem To manage notifications about this bug go to: https://bugs.launchpad.net/hwe-next/+bug/1874698/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs