DP port is glitching and flickering

sefa6727

Prominent
Oct 17, 2017
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After using my second monitor for some time, the screen starts flickering (display looses signal for less than a second) and glitching (artifacts...).
I've tried different monitors, different cables, different GPUs.
I tried a GTX 1060, GTX 660, two different Rankie 1.8m DP cables, two different Samsung S24E650PL monitors.
Wtih every one of them I had the glitching. The only thing that I did not switch were the OS (Ubuntu 16.04.3 with nvidia-387 driver + I also tried nvidia-381 driver) and the power supply.

Here is one video of it:
https://x.scrumplex.rocks/watch/3a72447c-4b12-4af9-b5a0-810211c56469.mp4
 

hang-the-9

Titan
Moderator
Does this only happen when there are two monitors connected? No issues with one? Does it happen on any connection type of only DP? Need to see if the issue is specific to your system, which it looks like it is since you tried different video cards and monitors. Try using another operating system and driver setup or test your hardware on another computer.
 

sefa6727

Prominent
Oct 17, 2017
4
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510
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It only happens on my DP screen. The other one (connected with HDMI) is completely fine. I can't really check another OS. Could try to install Windows. This problem could be related to the desktop I use, although this already happened, before installing a newer version of the desktop.

Below is my xorg.conf:

Code:
# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 384.90  (buildd@lgw01-amd64-058)  Tue Sep 26 03:04:39 UTC 2017


Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "0"
EndSection

Section "Files"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Monitor"

    # HorizSync source: edid, VertRefresh source: edid
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Samsung S24E650"
    HorizSync       30.0 - 81.0
    VertRefresh     50.0 - 75.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce GTX 1060 6GB"
EndSection

Section "Screen"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "Stereo" "0"
    Option         "nvidiaXineramaInfoOrder" "DFP-2"
    Option         "metamodes" "DP-0: nvidia-auto-select +0+0 {ForceCompositionPipeline=On, ForceFullCompositionPipeline=On}, HDMI-0: nvidia-auto-select +1920+0 {ForceCompositionPipeline=On, ForceFullCompositionPipeline=On}"
    Option         "SLI" "Off"
    Option         "MultiGPU" "Off"
    Option         "BaseMosaic" "off"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection
 

sefa6727

Prominent
Oct 17, 2017
4
0
510
0


I just installed Windows (8.1) with the official NVIDIA drivers. It has the same issues. After I set the resolution to 1280x720 instead of 1920x1080 it looked like it was ok. My last idea would be, to replace the PSU. Are power issues likely? (Corsair CX500M)


UPDATE: I bought a new PSU and sent the old one back with no success. The issue persists

- Not GPU's fault
- Not PSU's fault
- Not Cable(s)'s fault(s)
- Not monitor(s)'s fault(s)
- Not driver's fault
- Not OS' fault

What have I missed?
 

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