I have an issue with artifacts (faint vertical lines) appearing in QHD (2560x1440) resolution when monitor is connected over DisplayPort.
Configuration: Manjaro KDE (Kernel 5.4) / Dell P2418D (DP v1.2) / Palit GTX1660 Super.
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:
- 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.
- 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.
Thank you in advance.
nvidia-bug-report.log.gz (208 KB)