Tonga PRO [Radeon R9 285/380] [1002:6939] blank screen

[Steven Falco]

On 10/05/2017 02:26 PM, Martin Babutzka wrote:
> @Steven Falco: This behavior was EXACTLY the same with my R9 380 caused
> by commit e37a7b4088da ("drm/amd/powerplay: tidy up ret checks in
> amd_powerplay.c"). This is reverted now since a few days - are you sure
> your kernel build already includes commit adc6af2349f0
> ("drm/amd/powerplay: fix ret checks in amd_powerplay.c")?

I've built a kernel from the amd-staging-drm-next branch of the agd5f tree.  It gives me a usable gui, but I get a lot of error messages on any terminals that I open.

I've added a new dmesg and xorg log file to the bug at https://bugs.freedesktop.org/show_bug.cgi?id=103111

The dmesg attachment is here: https://bugs.freedesktop.org/attachment.cgi?id=134713

The basic error message is "page dumped because: corrupted mapping in tail page" and the call trace has references to amdgpu, apparently beginning at amdgpu_drm_ioctl.

Please let me know if I can provide any additional information.

	Thanks,
	Steve