[Mesa-dev] [AMD] Screen flickering with 4K and RX 480, would be glad to help debugging

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Hi!

Here's more info about my rig:

It's a Fedora 25 + mystro256 copr repo (https://copr.fedorainfracloud
.org/coprs/mystro256/polaris-gfx/packages/)
This copr repo brings clang and llvm 3.9.0 as well as mesa 13.0.3

This is the display: https://www.amazon.com/gp/prod
uct/B01CH9ZTI4/ref=od_aui_detailpages00?ie=UTF8&psc=1
This is the graphics card:
http://www.newegg.ca/Product/Product.aspx?Item=N82E16814150774&cm_re=XFX_Radeon_RS_RX_480_DirectX_12_RX-480P836BM-_-14-150-774-_-Product

Strangely, depending on the kernel I use, the problem can completely
disappear.
I have the problem with the latest kernel: kernel-4.9.4-201.fc25, but not
with the kernel-4.8.15-300.fc25
Fedora kernels are here: https://bodhi.fedoraproject.or
g/updates/?packages=kernel

Thank you very much!
<https://bodhi.fedoraproject.org/updates/FEDORA-2017-252ce2f03f>

2017-01-21 16:38 GMT-05:00 Marek Olšák <maraeo at gmail.com>:

> [-mesa-dev, +amd-gfx]
>
> This looks suspicious:
>
> [  780.811943] [drm] dc_pre_update_surfaces_to_stream: commit 1
> surfaces to stream 0x1ade3000
>
> Marek
>
>
> ---------- Forwarded message ----------
> From: Romain Failliot <romain.failliot at foolstep.com>
> Date: Sat, Jan 21, 2017 at 9:50 PM
> Subject: Re: [Mesa-dev] [AMD] Screen flickering with 4K and RX 480,
> would be glad to help debugging
> To: Marek Olšák <maraeo at gmail.com>
> Cc: mesa-dev <mesa-dev at lists.freedesktop.org>
>
>
> Hi!
>
> 2017-01-02 15:10 GMT-05:00 Marek Olšák <maraeo at gmail.com>:
> >
> > Does dmesg or Xorg.0.log show anything?
>
>
> I don't know if it's really relevant, but here are my `dmesg` and
> `journalctl -b _COMM=gdm-x-session` ('xorg' files) before and after a
> session of Dota.
> I got two glitches and quit Dota right away. The main diff I see is
> between the xorg log, but I don't know if it means anything.
>
> Please see the attached tarball.
>
> Thanks!
>



-- 
Romain "Creak" Failliot
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