Subj : Graphics driver question
To   : All
From : Barry Martin
Date : Tue Sep 09 2025 08:16:00


Hi Folks!

Recently bought a new monitor to replace one that died.  I have a second
monitor next to it (joined displays).  The dead monitor and the joined 
monitor have 60 Hz refresh rates.  The new monitor goes up to 75 Hz
(will also do 60).

With the new monitor set for 75 Hz (max) and the joined monitor at 60 Hz
(max for it) everything is fine -- or looks to be.  When I start adding 
overlays (might be wrong term) I sometimes get what looks like line 
noise but mainly in Terminal type of areas.  Move the overlay screen to 
the joined monitor and the line noise goes way. 

A Terminal screen that is part of the "first layer" (so Desktop) is 
clear but any 'overlay' like this XP Virtual Machine's Command Prompt 
window will be noisy but the XP Desktop, icons, and other graphical 
stuff is normal. 

Found when rebooting XP VM the black background of the VirtualBox logo is
noisy but the rest is clear.

Same for when using Remmina: the remote machine will display noise with 
its Terminal screen but everything else is clean.

So the fix is simple: run the new monitor at 60 Hz.  Corrects the noise 
problem immediately: I had XP running, Terminal noise at 75 Hz.  Bring up
Display Settings, switch to 60 Hz: noise vanishes.

So, I'm not so concerned with running this monitor at a particular, just
wondering what the cause is.  Old graphics card??  ...Actually I think 
it's integrated with the CPU.  ...Not planning on swapping out, just 
interested for the future.



                     ¯                                 ®
                      ¯  BarryMartin3@MyMetronet.NET  ®
                     ¯                                 ®


.... I'm Too Lazy to Read the Instruction, Just Tell Me What to Do.
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