amdgpu hangs on boot or shutdown on AMD Raven Ridge CPU (Engineer Sample)

[Daniel Drake]

Hi,

> >>>     We are working with new laptops that have the AMD Ravenl Ridge
> >>> chipset with this `/proc/cpuinfo`
> >>> https://gist.github.com/mschiu77/b06dba574e89b9a30cf4c450eaec49bc
> >>>
> >>>     With the latest kernel 4.15, there're lots of different
> >>> panics/oops during boot so no chance to get into X. It also happens
> >>> during shutdown. Then I tried to build kernel from
> >>> git://people.freedesktop.org/~agd5f/linux on branch
> >>> amd-staging-drm-next with head on commit "drm: Fix trailing semicolon"
> >>> and update the linux-firmware. Things seem to get better, only 1 oops
> >>> observed. Here's the oops
> >>> https://gist.github.com/mschiu77/1a68f27272b24775b2040acdb474cdd3.

It seems that we are not alone seeing amdgpu-induced stability
problems on multiple Raven Ridge platforms.
https://www.phoronix.com/scan.php?page=news_item&px=AMD-Raven-Ridge-Mobo-Linux

AMD, what can we do to help?

Thanks!
Daniel