Hello. I don't speak or write in English.
I want to know if it's possible to track down a graphic glitch that don't let me live. The problem: A horizontal line appears on my screen for one second and disappear. The glitch is random, happens twice per hour, maybe. In two different pc happen, one of them has a screen with VA technology, so i can see better the line (because has a lower refresh time) connected through HDMI and the other is a IPS (DVI). One of the systems use a Nvidia gpu with a AMD cpu and the other a Intel cpu and gpu. I can't take a screenshot, for the randomness of the problem, so i made some examples and i find one picture (of a completely different problem) that fits perfectly. Examples: https://flic.kr/p/S9ZbWW https://flic.kr/p/QwMs4M https://flic.kr/p/2cUggrx The picture (the line is exactly like this): https://i.stack.imgur.com/7Dk9K.jpg I assume the error happens when an event for the keyboard or mouse occur. The applications present when this happen are: xterm tmux emacs (in terminal mode) moc firefox chromium The OS is Debian 9, and the environments are XFCE and Openbox. Previously i "fixed" a tearing problems on both systems, but this specific problem continues. Thank you.
