Those are mostly visible on gray-scale/darker backgrounds, e.g.
The horizontal scanlines became partially visible as well (I have sensitive eyes).
Steps I’ve taken trying to narrow down the problem:
Tried another DP cable - issue persists.
Tried with another distro (Ubuntu19.04 in live mode with driver installed (albeit version 418)) - issue persists: IMG-20200105-022845 — ImgBB
Running without nvidia driver (just nouveau) - no visible artifacts.
Lowering the resolution to 1920x1080 - no artifacts (at least there are no vertical lines but some slight pixel inconsistency instead, sort of ‘X’ grid).
Switching to HDMI connection - no visible artifacts.
Using DP-to-HDMI cable - no visible artifacts.
Finally I installed Windows10 with 441.08/441.41 driver and used the same DisplayPort connection - no visible artifacts in QHD.
Additional information:
I tried to play with xrandr setting custom resolution of 2560x1440_59Hz, and this seem to affect lines visibility somehow, but not completely eliminated them.
Those lines may appear in different places, i.e. on different dark backgrounds. I can spot them in one part of the Telegram UI, turn the monitor off and on, and then they appear in other places of the UI.
First I ran AIDA64 GPU test - it completed successfully.
In order to stress test the GPU I ran Furmark with different presets couple of times.
Result: no visible artifacts (Windows + 441.41 + DisplayPort + QHD resolution), stable run, no overheating.
Can you please suggest trying anything else?
Could this be a Linux driver bug?
I thought about returning this card to store’s service center for extended diagnostics, but I think they will simply plug the GPU into Windows PC and find no problems with it.
I’ve been having the same problem since I switched from HDMI-to-DVI to DisplayPort. The problem happened on my GTX 1060 and still happens on my new RTX 2080.
Also noticed that on a screenshot, viewed from another device, the artifacts don’t show.
I would guess it’s either something in the driver when displaying over displayport, or the cable itself. I don’t have another cable to test though.