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 Desktop Packages, 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) Status in OEM Priority Project: New Status in xserver-xorg-video-amdgpu package in Ubuntu: New Bug description: On Dell Precision 7740, after installed amdgpu-pro 19.10-793418, the HDMI audio will lose function after the dGPU did runtime suspend. How to check the AMD dGPU is in runtime suspend: $ lspci -s 01:00.0 -xxvv When the AMD dGPU is in runtime suspend, all of the registers will be 0xf. Release: 18.04 LTS kernel: 4.15.0-1037-oem amdgpu-pro: 19.10-793418 To manage notifications about this bug go to: https://bugs.launchpad.net/oem-priority/+bug/1847219/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
