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purzel

Member

Registered: 2012-01-05

Posts: 54

Occasional screen flicker on 1440p 144Hz Display

Hi all,

I've got myself a new monitor, an LG 27GL850 2560*1440 capable of going to 144Hz. However every so often (10-60min.) The upper third of the screen turns black which I guess would be a single frame or very close to it. GPU is an Nvidia 1660 Super and system is up to date.

Not sure where to start looking for the source, so here are some gathered settings:

Gnome settings, display at native resolution and 143.97Hz which is the highest option.

DisplayPort connection, G-Sync active according to nvidia-settings

xrandr

Screen 0: minimum 8 x 8, current 2560 x 1440, maximum 32767 x 32767
DVI-D-0 disconnected (normal left inverted right x axis y axis)
HDMI-0 disconnected (normal left inverted right x axis y axis)
DP-0 connected primary 2560x1440+0+0 (normal left inverted right x axis y axis) 597mm x 336mm
   2560x1440    143.97*+ 120.00    99.95    59.95  
   1920x1080     74.91    60.00    59.94    50.00  
   1680x1050     59.95  
   1600x900      60.00  
   1280x1024     75.02    60.02  
   1280x800      59.81  
   1280x720      60.00    59.94    50.00  
   1152x864      59.96  
   1024x768      75.03    60.00  
   800x600       75.00    60.32  
   720x480       59.94  
   640x480       75.00    59.93    59.94  
DP-1 disconnected (normal left inverted right x axis y axis)

nvidia-settings

#
# Configuration file for nvidia-settings - the NVIDIA X Server Settings utility
# Generated on Fri Nov 27 15:51:03 2020
#

# ConfigProperties:

RcFileLocale = C
DisplayStatusBar = Yes
SliderTextEntries = Yes
IncludeDisplayNameInConfigFile = No
ShowQuitDialog = Yes
UpdateRulesOnProfileNameChange = Yes
Timer = PowerMizer_Monitor_(GPU_0),Yes,1000
Timer = Thermal_Monitor_(GPU_0),Yes,1000
Timer = Memory_Used_(GPU_0),Yes,3000

# Attributes:

0/SyncToVBlank=1
0/LogAniso=0
0/FSAA=0
0/TextureClamping=1
0/FXAA=0
0/AllowFlipping=1
0/FSAAAppControlled=1
0/LogAnisoAppControlled=1
0/OpenGLImageSettings=1
0/FSAAAppEnhanced=0
0/AllowGSYNC=1
0/AllowVRR=1
0/ShowGSYNCVisualIndicator=0
0/ShowVRRVisualIndicator=0
0/ShowGraphicsVisualIndicator=0
0/XVideoSyncToDisplayID=DP-0
[DPY:DVI-D-0]/Dithering=0
[DPY:DVI-D-0]/DitheringMode=0
[DPY:DVI-D-0]/DitheringDepth=0
[DPY:DVI-D-0]/ColorSpace=0
[DPY:DVI-D-0]/ColorRange=0
[DPY:DVI-D-0]/SynchronousPaletteUpdates=0
[DPY:HDMI-0]/Dithering=0
[DPY:HDMI-0]/DitheringMode=0
[DPY:HDMI-0]/DitheringDepth=0
[DPY:HDMI-0]/ColorSpace=0
[DPY:HDMI-0]/ColorRange=0
[DPY:HDMI-0]/SynchronousPaletteUpdates=0
[DPY:DP-0]/RedBrightness=0.000000
[DPY:DP-0]/GreenBrightness=0.000000
[DPY:DP-0]/BlueBrightness=0.000000
[DPY:DP-0]/RedContrast=0.000000
[DPY:DP-0]/GreenContrast=0.000000
[DPY:DP-0]/BlueContrast=0.000000
[DPY:DP-0]/RedGamma=1.000000
[DPY:DP-0]/GreenGamma=1.000000
[DPY:DP-0]/BlueGamma=1.000000
[DPY:DP-0]/Dithering=0
[DPY:DP-0]/DitheringMode=0
[DPY:DP-0]/DitheringDepth=2
[DPY:DP-0]/DigitalVibrance=0
[DPY:DP-0]/ColorSpace=0
[DPY:DP-0]/ColorRange=0
[DPY:DP-0]/SynchronousPaletteUpdates=0
[DPY:DP-1]/Dithering=0
[DPY:DP-1]/DitheringMode=0
[DPY:DP-1]/DitheringDepth=0
[DPY:DP-1]/ColorSpace=0
[DPY:DP-1]/ColorRange=0
[DPY:DP-1]/SynchronousPaletteUpdates=0

Thanks!

purzel

Member

Registered: 2012-01-05

Posts: 54

Re: Occasional screen flicker on 1440p 144Hz Display

After searching high and low:

https://linustechtips.com/topic/1235675 … 660-super/

Seems to be a 1660 Super issue.

icar

Member

Registered: 2020-07-31

Posts: 562

Re: Occasional screen flicker on 1440p 144Hz Display

Maybe you could try, reading the solution in the forum you shared, https://gitlab.com/leinardi/gwe to increase the working frequency of the card.