Display With Horizontal White Bars

[Larry Stehno]

I just installed Linux Lite 5.4 on a HP Pro 3420 All-In-One PC.  The install went well with a normal display but it has horizontal white bars running up and down over the display.  I ran a update but no change.  I checked for third party drivers and none were found thinking another video driver is needed.  Any ideas for getting rid of these white bars?  thanks,
Planorez 

[Valtam]

We'll need to see a screenshot.

[Larry Stehno]

How do I send you a screen shot?  JPGs aren't allowed for uploads.

[Valtam]

In your welcome to the Forum message, there is a link there to posting guidelines.

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[Larry Stehno]

Here is the shot of my screen with the bars from Imgur:

https://imgur.com/a/GvvoD5E

[Valtam]

I've seen that condition with faulty cabling, can you try another cable or connection type (HDMI, VGA or DVI).

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[Larry Stehno]

This is an All-In-One PC so there are no external video cable connections.  This same problem shows up on two different PCs of the same model so it is unlikely to be a connection problem and is an inherent system problem with this model.  What about the video driver? How do I either roll it back to an earlier version or find one developed for Linux?  Thanks,
Planorez

[trinidad]

Experiment with your screen resolution. White bars are from mismatched horiz/vert combinations. When your find one that works then you can change it to stay preferred from the grub console.

TC

[Larry Stehno]

I went through all the alternative resolutions and none fixed the problem.  Thanks for the suggestion.
Planorez

[Valtam]

What is the output of:

Code:

inxi -G