Subj : Graphics driver quest
To   : Ky Moffet
From : Barry Martin
Date : Mon Sep 29 2025 06:57:00


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.


 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
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.


                     ¯                                 ®
                      ¯  BarryMartin3@MyMetronet.NET  ®
                     ¯                                 ®


.... Camping tips: a large carp can be used for a pillow.
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