HDMI audio lost function after the dGPU did runtime suspend. (AMD RX 580)
Bug #1847219 reported by
Leon Liao
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
OEM Priority Project |
New
|
Undecided
|
Unassigned | ||
xserver-xorg-video-amdgpu (Ubuntu) |
New
|
Undecided
|
Unassigned |
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
tags: | added: oem-priority |
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There is a workaround solution to avoid this bug.
It is to disable the amdgpu runtime suspend.
Just add amdgpu.runpm=0 on the kernel command line.