[aur-general] amdgpu-pro : video playback hangs system

[SET]

Hello,

I just can't play any video file with amdgpu-pro, with any DE, any video file 
format and any player. The system totally freezes on playback start and 
there's no choice but a hard reboot.

There are no problems with a 3D application I use (Slicer) though performance 
is less than with fglrx.

My laptop : 
Linux hp2.domain 4.7.4-1-ARCH #1 SMP PREEMPT Thu Sep 15 15:24:29 CEST 2016 
x86_64 GNU/Linux
00:01.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] 
Kaveri [Radeon R6 Graphics]
01:00.0 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Topaz XT 
[Radeon R7 M260/M265 / M340/M360] (rev ff)
X.Org X Server 1.18.4

Here is my Xorg.log : http://pastebin.com/WeY7X2De 

amdgpu_test : the first time, the system froze on 'VCE tests'. Next run would 
stop with these results : http://pastebin.com/g2jF423b 

I wish to know if it's a common known problem with some tweaks to get it work 
(play videos). Or if's an upstream amdgpu-pro/Xorg problem where I just have 
to wait and try a next release.

Thanks for any input.