[Bug 93826] 144Hz graphic glitches and bad refresh rate

[bugzilla-daemon@freedesktop.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=93826

--- Comment #27 from Yves W. <yves.weber@yahoo.de> ---
Same for me. flickering problems @144hz,120hz and even 100hz when using newer
kernel (tested 4.8.0 ubuntu kernel) or amdgpu-pro 16.30.3-315407 driver with
any kernel


- with default driver and default kernel (Linux Mint 18 -> 4.4.0-38-generi)
it's working at 2560x1440 @144hz, no flickering issues.

-> tried using the Ubuntu 4.8.0 kernel -> flickering at 2560x1440 @144hz,120
and 100hz. only 60hz works without flickering
-> with the amdgpu-pro 16.30.3-315407 driver from amd site, it's always
flickering at 2560x1440 @144hz,120 and 100hz. only 60hz works without
flickering



system info:
-----------

lshw -c video
-------------
  *-display               
       Beschreibung: VGA compatible controller
       Produkt: Hawaii PRO [Radeon R9 290]
       Hersteller: Advanced Micro Devices, Inc. [AMD/ATI]
       Physische ID: 0
       Bus-Informationen: pci@0000:03:00.0
       Version: 00
       Breite: 64 bits
       Takt: 33MHz
       Fähigkeiten: pm pciexpress msi vga_controller bus_master cap_list rom
       Konfiguration: driver=radeon latency=0
       Ressourcen: irq:50 memory:e0000000-efffffff memory:f0000000-f07fffff
ioport:e000(Größe=256) memory:fbe00000-fbe3ffff memory:fbe40000-fbe5ffff
  *-display
       Beschreibung: VGA compatible controller
       Produkt: Hawaii PRO [Radeon R9 290]
       Hersteller: Advanced Micro Devices, Inc. [AMD/ATI]
       Physische ID: 0
       Bus-Informationen: pci@0000:06:00.0
       Version: 00
       Breite: 64 bits
       Takt: 33MHz
       Fähigkeiten: pm pciexpress msi vga_controller bus_master cap_list rom
       Konfiguration: driver=radeon latency=0
       Ressourcen: irq:51 memory:c0000000-cfffffff memory:d0000000-d07fffff
ioport:d000(Größe=256) memory:fbd00000-fbd3ffff memory:fbd40000-fbd5ffff

xrandr
------
Screen 0: minimum 320 x 200, current 2560 x 1440, maximum 16384 x 16384
DisplayPort-1 connected primary 2560x1440+0+0 (normal left inverted right x
axis y axis) 598mm x 336mm
   2560x1440     59.95 + 143.86*  144.00   119.88    99.90




additional info:
---------------
-using driver from ppa: deb
http://ppa.launchpad.net/oibaf/graphics-drivers/ubuntu xenial main
vs.
amdgpu-pro 16.30.3-315407


dpkg -l | grep '^ii' | grep radeon
----------------------------------
ii  libdrm-radeon1:amd64                        
2.4.71+git1610040630.a44c9c~gd~x           amd64        Userspace interface to
radeon-specific kernel DRM services -- runtime
ii  libdrm-radeon1:i386                         
2.4.71+git1610040630.a44c9c~gd~x           i386         Userspace interface to
radeon-specific kernel DRM services -- runtime
ii  radeontool                                   1.6.3-1                       
            amd64        utility to control ATI Radeon backlight functions on
laptops
ii  xserver-xorg-video-radeon                   
1:7.7.99+git1609271931.3fc839~gd~x         amd64        X.Org X server --
AMD/ATI Radeon display driver



tomb raider v.1.1.1 benchmark:
-----------------------------
FPS:                                                            min            
|       max             |       avg.
--------------------------------------------------------------------
radeon:                                                         97.4    |      
145.4   |       123.4
amdgpu-pro 16.30.3-315407:                      50.5    |       94.9    |      
79.8

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