Subj : Re: Graphics driver quest
To   : Barry Martin
From : Ky Moffet
Date : Tue Sep 30 2025 09:05:00

BARRY MARTIN wrote:
> Hi Ky!
> 
>   > Anyway, back to the graphics driver question (new monitor displaying
>   > noise in VM and remote access Terminals in 75 Hz mode but not 60),
>   > appears the problem might be the cable isn't fully inserted.  This
>   > morning the monitor was telling me "mode not supported" (toggle power
>   > button) "cable not connected" (feel under monitor and press up on HDMI
>   > cable).  Power on  monitor: now behaving.
>   KM> This is apparently a common problem with the newfangled
>   KM> weatherproof network connectors that don't have a positive latch,
>   KM> but instead you just give 'em a jerk to pull out.
> 
> I could see why: gravity and wind loosening the connection.

Reportedly more often that it doesn't make a good connection until you 
really shove it in there.


>   KM> Anyway yeah, not making 100% contact can cause all manner of
>   KM> video weirdness. The junk board inside Moonbase (which I still
>   KM> haven't got around to giving its new board) apparently doesn't
>   KM> quite make contact all the time and it'll develop this weird
>   KM> waveriness, like the screen is underwater. Give the cable a good
>   KM> shove and it goes away. -- More typical with VGA or DVI that's
>   KM> not quite in contact will be a monocolored screen, but I don't
>   KM> know what HDMI does in that boat. Sinking performance??
> 
> Let that concept wash over me....  The only half-working experiences I

Barry! Your monitor is leaking!

> have with HDMI is the audio not working on a computer downstairs and
> this monitor with the noise pattern in Terminals.  ...And I do have a
> mini-HDMI adapter to HDMI adapter for my test Raspberry Pi's where it
> seems the 'handle' around the mini end is a fraction too thick for some
> cases and really have to make sure to shove in all the way.  I need to
> shave off a smidgen but shove in, which fixes, then forget about it as
> works and I can get on with my project.

Yeah, generally once it's plugged in and working, we cease to care and 
never look at it again!
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