[GRLUG] VGA / video question

John-Thomas Richards jtr at jrichards.org
Sun Mar 22 17:01:35 EDT 2015


This is not strictly Linux-related so please indulge me.

We bought a couple 65" TVs (cheaper than a projector/screen) for Sunday
morning worship services (lyric projection, etc.). I have a laptop with
Ubuntu running OpenLP (open source lyric projection). The TVs do not
have a VGA connector and the laptop only has a VGA connector. I bought
two VGA->HDMI adapters. When I connect the laptop to this with a short
VGA cable (~6') I get full 1920x1080. This runs through a 4-port VGA
video splitter, also with a ~6' cable. Works as it should. However, when
I connect a 75' video cable from the laptop to the splitter Ubuntu only
wants 1024x768 (verified via 'xrandr -q' on the CLI). This seems like a
loss of video signal. Would a VGA signal booster eliminate this? I don't
want to spend more money without being sure. This seems plain to me, but
I want to make sure I am not missing anything.
If we could read the secret history of our enemies, we should find in
each man's life sorrow and suffering enough to disarm all hostility.
Henry Wadsworth Longfellow, poet (1807-1882)

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