On 2018-03-20, Xianwen Chen <xianwen.c...@nina.no> wrote: > Dear OpenBSD users, > > I run OpenBSD 6.2 amd64 on a Dell Latitude E6540 laptop. > > I hook a Dell U2412M monitor to the laptop using VGA port.
So you have a pretty decent monitor and laptop, but you're using an analogue connection (which means: digital generation, converted to analogue in the laptop, sent over a cable, sampled at the monitor to convert back to digital), at a resolution and refresh rate which is right at the practical limit for the cable. I think you'll be a lot happier if you get an HDMI-DisplayPort cable and switch to a digital connection.
