Screen flicckering due to "drm/amdgpu: enable gfxoff again on raven series"

[Deucher, Alexander]

Kernel command line in grub.
________________________________
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> on behalf of Deucher, Alexander <Alexander.Deucher at amd.com>
Sent: Friday, April 5, 2019 1:07 PM
To: Pinky; amd-gfx at lists.freedesktop.org
Subject: Re: Screen flicckering due to "drm/amdgpu: enable gfxoff again on raven series"

This may be related to stutter mode rather than gfxoff.  If so, there is a fix in the pipeline for that.  Does setting appending amdgpu.ppfeaturemask=0xfffdbfff on the kernel command line fix it?

Alex
________________________________
From: amd-gfx <amd-gfx-bounces at lists.freedesktop.org> on behalf of Pinky <j-pi at seznam.cz>
Sent: Friday, April 5, 2019 12:24 PM
To: amd-gfx at lists.freedesktop.org
Subject: Screen flicckering due to "drm/amdgpu: enable gfxoff again on raven series"

Hello,

I have today compiled the drm-next kernel from (1) and find out the screen is
flickering and shows various artifacts. By bissecting I found the cause
is commit 005440066f929ba0dca8f4e0aebfbf8daac592cc. By reverting it the
problem went out.

I does not have idea about what to do next. Sorry if this should be posted to
some bugzilla instead, I have got a bit lost. If so, would You please
point my out what to do?

With best regards,
    Pinkava J.


lspci (partial)

00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Raven/Raven2 IOMMU
00:01.0 Host bridge: Advanced Micro Devices, Inc. [AMD] Family 17h (Models 00h-0fh) PCIe Dummy Host Bridge
06:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Raven Ridge [Radeon Vega Series / Radeon Vega Mobile Series] (rev d1)
06:00.1 Audio device: Advanced Micro Devices, Inc. [AMD/ATI] Raven/Raven2/Fenghuang HDMI/DP Audio Controller




(1) git://people.freedesktop.org/~agd5f/linux
_______________________________________________
amd-gfx mailing list
amd-gfx at lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/amd-gfx/attachments/20190405/3b13d4fa/attachment-0001.html>