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

[bugzilla-dae...@freedesktop.org]

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

--- Comment #28 from Yves W.  ---
bah all got displaced, here again my little benchmark :)

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

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--- Comment #27 from Yves W.  ---
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 at :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:e000-efff memory:f000-f07f
ioport:e000(Größe=256) memory:fbe0-fbe3 memory:fbe4-fbe5
  *-display
   Beschreibung: VGA compatible controller
   Produkt: Hawaii PRO [Radeon R9 290]
   Hersteller: Advanced Micro Devices, Inc. [AMD/ATI]
   Physische ID: 0
   Bus-Informationen: pci at :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:c000-cfff memory:d000-d07f
ioport:d000(Größe=256) memory:fbd0-fbd3 memory:fbd4-fbd5

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   119.8899.90




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   amd64Userspace 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   
amd64utility to control ATI Radeon backlight functions on
laptops
ii  xserver-xorg-video-radeon   
1:7.7.99+git1609271931.3fc839~gd~x amd64X.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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[Bug 93826] 144Hz graphic glitches and bad refresh rate

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--- Comment #26 from Jan Niklas Hasse  ---
The same for me with a R9 380 and a ASUS MG278Q.

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

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--- Comment #25 from Dennis Martin Herbers  
---
I've got the same problem with a

Sapphire R9 390 Nitro
ASUS MG279Q

With Windows/Linux+fglrx, 2560x1440 at 144Hz work fine

With Linux+open source stack, it defaults to 2568x1440 at 139Hz with graphical
artifacts due to the 2568 width

With AMDGPU PRO 16.10 only 60Hz was possible, haven't tried AMDGPU PRO 16.20
yet

Using the open source stack and switching to 120Hz with xrandr -r 120 does the
trick and it runs at 2560x1440 at 119Hz without glitches, but it isn't optimal.

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

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--- Comment #24 from Pavel Bordukov  ---
Confirm, 120Hz works, but my OSD shows 2560x1440 @ 119Hz. Also as at 144Hz with
glitches: 2560x1440 @ 139Hz.

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

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--- Comment #23 from untoreh  ---
To make it work with grub I added "video=1920x1080MR at 120" to finally get no 
tty switching overhead.

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

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--- Comment #22 from untoreh  ---
I have a 290, monitor benq xl2411t.

Pushing high resolutions both in grub or xorg file produces glitches. They are
very noticeable at 120/144hz less noticeable at 100hz but still present. They
appear if I set `video=1920x1080 at 120` option at boot time, or add a modeline
with cvt in a xorg .conf file.

However if I remove the modelines from the conf file and just do a `xrandr -r
100/120/144` I have no glitches at all with any resolution. 

Setting a modeline with `cvt -r` also works, of course the only other mode
possible is 120 because it requries multiples of 60 but it has 0 glitches and
it works even buy setting it in the .conf file

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

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--- Comment #21 from Pavel Bordukov  ---
Same bug here, everything looks like Damien described. R290X + MG279Q at 144HZ.

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

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

--- Comment #20 from Damien  ---
Hi Alex. I understand better. 

Unfortunately I'm not an expert. Can you offer me a PKGBUILD Patch or tell me
what value i need change in atombios.crtc.c and what to put there?

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

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--- Comment #19 from Alex Deucher  ---
(In reply to Damien from comment #18)
> Alex thank you for your return.
> 
> Since my monitor works from scratch with a 7950 or fury but not with three
> 290X tested, is that it is possible to retrieve the values that work ?

The same algorithm is used on all of those parts.  The only reason there would
be different dividers selected would be if the pll limits in the vbios or the
reference clock were different.  However, looking at various vbioses for those
different asics indicate that the vbios limits are the same for all of them.  I
doubt they would be different on your boards.  As such. that combination of
dividers seems to be disagreeable to your monitor on that specific hw.  The
underlying hw implementation of the pll varies a bit from asic to asic, so the
pll selection probably needs to be tweaked a bit for that hw to be stable at
that combination as per comment 17.

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

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--- Comment #18 from Damien  ---
Alex thank you for your return.

Since my monitor works from scratch with a 7950 or fury but not with three 290X
tested, is that it is possible to retrieve the values that work ?

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

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--- Comment #17 from Alex Deucher  ---
The pll divider combination that is getting selected doesn't seem to agree with
that monitor.  You can try adjusting the algorithm in
radeon_compute_pll_avivo() or the pll flags passed to
radeon_compute_pll_avivo() in atombios_adjust_pll().

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--- Comment #16 from Alex Deucher  ---
*** Bug 94315 has been marked as a duplicate of this bug. ***

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

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--- Comment #15 from Damien  ---
Tested with two another 290X and another Asus MG279Q. Same issue. 

Tested with a Fury X : Issue Fixed.

It's a driver bug. Not hardware related.

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

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--- Comment #14 from Damien  ---
Grub uses the old VGA driver and can not handle the 290x @144hz. It's the same
issue with the opensource which works correctly only @60 Hz...  I fixed the
problem by forcing a resolution with grub. 

But impossible to solve the issue with the xf86-video-ati driver. Also tried
the git version.

Remember, no issue with windows & linux with Catalyst fglrx driver so I do not
trust a hardware issue.
There must be a diff�rence in refresh rate management if catalyst wedge to
144Hz immediately after installation while the opensource driver made a bizarre
139Hz with artifacts (see attachments).

Can be an important point to clarify: I use DisplayPort 1.2.

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--- Comment #13 from Michel D�nzer  ---
grub doesn't use this driver, so there might be a hardware/VBIOS issue. Maybe
the other drivers work around that somehow.

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--- Comment #12 from Damien  ---
I've test to make a new mode : 
xrandr --newmode "2560x1440_144.00"  808.75  2560 2792 3072 3584  1440 1443
1448 1568 -hsync +vsync

But same issue. 

Works with FGLRX @144Hz.

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--- Comment #11 from Damien  ---
No issues on windows @144Hz.

Ok on linux @60Hz only.

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--- Comment #10 from Damien  ---
Created attachment 121228
  --> https://bugs.freedesktop.org/attachment.cgi?id=121228=edit
Xorg.log

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--- Comment #9 from Damien  ---
Created attachment 121227
  --> https://bugs.freedesktop.org/attachment.cgi?id=121227=edit
Pacman -q

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--- Comment #8 from Damien  ---
Created attachment 121226
  --> https://bugs.freedesktop.org/attachment.cgi?id=121226=edit
Dmesg

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Damien  changed:

   What|Removed |Added

Summary|144Hz graphic glitches and  |144Hz graphic glitches and
   |bad resolution  |bad refresh rate

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