[Discuss] VGA to DVI-D

[epp at null.net (Edward)]

One of my desktops has both VGA and DVI outputs from the on-board video,
monitor has VGA and HDMI inputs.

To see if I could get an improvement in the video, I tried several
DVI-to-HDMI adapter cables (all from Amazon). There was nothing but RF
interference coming from all of them, that I went back to using a regular
VGA cable.

With a scanner radio in the same room as the desktop, RF interference was
heard over the scanner with an DVI-to-HDMI adapter cable plugged in (tried
cables with and without ferrites attached), with the monitor turned on. As
soon as the monitor was turned off, the RF interference stopped.


On Tuesday 22 August 2023 01:35:15 PM (-04:00), Ben Kallus wrote:

 > Hi everyone,
 >
 > I have a very picky monitor that only operates in 1920x1200 mode. It
 > uses single-link DVI-D for input, and I need to connect it to my
computer's
 > VGA port.
 >
 > Adding a GPU with a DVI-D output to the machine would work, but is
 > unsatisfying in a way that's hard to articulate. I would much rather use
an
 > adapter. VGA is analog, and DVI-D is digital, so you can't passively
adapt
 > one to the other. 99% of the VGA-DVI adapters on eBay and Amazon are
 > passive adapters, and they clutter the search results, making it very
 > difficult to find the product I'm looking for.
 >
 > I have found a few active adapters from VGA to HDMI, (which can be
easily
 > adapted to DVI-D) but all of them have a maximum resolution of
1920x1080,
 > and are therefore not sufficient for my use case. One adapter from
SinLoon
 > claimed to support 1920x1200, but when it arrived, `swaymsg -t
get_outputs`
 > reported that it actually maxed out at 1920x1080.
 >
 > Has anyone here dealt with this problem in the past? Is anyone aware of
an
 > adapter with VGA input and digital output that supports 1920x1200?
 >
 > Thanks,
 > Ben