There is a workaround solution to avoid this bug. It is to disable the amdgpu runtime suspend. Just add amdpug.runpm=0 on the kernel command line.
-- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xserver-xorg-video-amdgpu in Ubuntu. https://bugs.launchpad.net/bugs/1847219 Title: HDMI audio lost function after the dGPU did runtime suspend. (AMD RX 580) To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1847219/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp