amdgpu: [powerplay] failed to send message 148 ret is 0

[Mikulas Patocka]

On Wed, 24 Oct 2018, Mikulas Patocka wrote:

> Hi
> 
> I have a Sapphire Pulse RX 570 ITX graphics card.
> 
> On Linux, I get errors "amdgpu: [powerplay] failed to send message 148 ret 
> is 0" and the system is stuck for several seconds when they happen. The 
> card works, except for these errors and occasional delays.

I've found that PP_PCIE_DPM_MASK causes there errors. If I turn this bit 
off in amdgpu.ppfeaturemask, there are no more any errors. (and turning it 
off also fixes hibernation problems)

Should it be turned off automatically in response to these errors?

Mikulas