Ulysses_: you might not like TB0ne's abrasive manner, but they're correct here.
Simply disputing things won't get you anywhere, and I'm sure TB0ne secretly enjoys these disputes, so you lose.

Oh, the popular (or should I say populist) misconception that
a) mainstream media are by default not credible (why?)
b) random videos are more credible, presumably because they're "straight from the horses mouth".

Gosh, aren't YOU?? To be as simple as possible, in the hopes you'll finally understand:

• You have *ONE* laptop display
• You have *ONE* cable going to that display
• You have *ONE* connection to *ONE* of the video cards
• There is no 'software path' to the laptop screen

That's it....there is no 'software switch', 'workaround', etc., that will magically make that cable on the inside of your laptop connect to anything else other than what it's connected to. Ever. Unless you open the laptop, break out the soldering iron, and rewire things, you're stuck.

Hybrid graphics drive (in your case) the external adapters...which work fine. Again; there is *NOTHING YOU HAVE POSTED* which indicates anything other than a hardware issue. The fact that external displays work prove that. AGAIN: either have it fixed/replaced, or live with it.
You are absolutely incorrect, ondoho...my wish is for folks like this to actually listen. They continue to repost the same question ("...exhaust any workarounds if any exist...", etc.), despite being told flatly that no, there aren't any workarounds.
I try to get news from sources that are credible, along with some sort of verification of a source for such things. Regardless, I still haven't heard of these supposedly massive 'riots', shipping being disrupted, or any of the other paranoid fears mentioned. We've shipped out plenty, and received many shipments, with no delays, aside from anything storm related. We received 20 brand-new Macbooks the other day for a client, but I guess we got lucky...the looters/rioters didn't blockade the streets and burn the vans.

I have nothing against his manner you might be surprised, the problem is he's missing 90% of the hard data presented to them and going in logical circles like a fundie but let's cool our tongues and you tell me please, what do YOU think this is?

https://www.linuxquestions.org/quest...1&d=1605554794

I'll make it a separate question if this thread short-circuits your thinking too - in other words forget my broken laptop, think of a healthy laptop and tell me, what do you think this does when you change the chosen GPU?

It's a screenshot of a Windows application showing some Nvidia settings.
Without context it's next to meaningless.
And I struggle to see how it could have anything to do with a loose/damaged screen cable.

Sorry, no. You are either not paying attention or you just plain aren't understanding what you're being told. The '90% of the hard data' presented was in post #1, where **YOU POSTED**:
(bolded for emphasis only). Ever unplug a VGA cable partway? Or have a loose HDMI? What does it do?? Think hard....it causes color problems, EXACTLY AS YOU DESCRIBED, doesn't it??

You then go on to say that it DOES NOT happen on external monitors. Do you know what that rules out? That rules out the video cards (BOTH of them), the software drivers (BOTH of them), and the display ports. Now, pay attention...the ONLY THING not working right is your internal display. You have ruled out the actual video hardware, software, and OS. What does that leave??? THE CABLE OR SCREEN ON THE LAPTOP. Those are the ONLY THINGS that remain.

You asked if there was a way to 'workaround', and somehow (magically) do something in software to get a different connection to the monitor...and you were answered VERY plainly multiple times NO, there is not. Period.
That is, still, a window from the nVidia control panel...not sure what you think it shows, other than saying "Yes, my laptop has hybrid graphics". That's it....nothing magic. STILL no way for you to make your laptop screen grow another adapter with a working cable, and somehow magically connect itself to the other card.
It does EXACTLY what it says...selects the preferred device for 3D acceleration. Nothing more...if you have trouble with any of the words on that screen, consult the manual that nVidia provides. Don't want your brain to 'short circuit'.

If you don't like the answers you get here, feel free to ask elsewhere, and see what you get.

No it does not rule out BOTH "video cards" - only ONE "video card" is being used (the one that the nvidia screenshot shows as the preferred one). Without this assumption (that both GPU's and respective software drivers are fine), everything you build upon from it and filling the rest of your last post crumples.

Both can still be fine but you have not proven it, just assumed it and built upon this assumption. Which is a reasonable assumption but not solid proof that there are no workarounds. And by the way, it is not the nvidia GPU itself that is being investigated as broken but the associated firmware or microcode or driver or whatever software.

You two want to help, just give me an open-source 3d test that measures performance with a chosen GPU and therefore proves which of the two is being used and that there is no hope in such a workaround whereby the slower GPU is chosen. Has to be open-source. Finding such in open-source is hard in Windows, while in linux I have not found the nvidia control panel to change the preferred GPU for an application or globally.