On Wed, Oct 27, 2021 at 06:11:20PM +0200, Ludovic Bellière wrote:
> On Wed, 27 Oct 2021, Haines Brown wrote:
>
> >
> > Ludovic, thanks for the feedback. The Z590 chipset is new (March
> > 2021), but I did see that someone had installed linux on it and so
> > assumed it could be done. I don't see Gigabyte's specification of the
> > video chip.
> >
> > The lspci command returns
> >

> >  VGA compatible controller: Intel ... Device 4c8a (rev 04)
> >     (prog-if 00 [VGA controller])

> >
>
> I don't care about the model of your motherboard, that's not really relevant.
> Actually, no motherboard is very relevant anymore. You need to care about the
> chips installed on them: iGPU/GPU/CPU. We still don't have that information, and
> we still don't know if your hardware is properly supported by the kernel,
> firmware and drivers available from debian.

Unfortunately I do not know how to identity the graphics chip, for the
Gigabyte spec page does not provide it.

> If your chip isn't yet supported by the kernel (which is doubtful for intel),
> it'll fallback to known standards that every manufacturer should support. If
> your display driver shows VESA, that's what I'm talking about. Since the kernel
> shipped by debian is usually old, check the backports and see if that version
> will help you.

But I first need to know if the backport kernel supports the graphics
chip. There is a 15.5.rc6 backport for Debian. It seems worthwhile to
try it out, but I don't know how to tell apt-get to intstall a
backported kernel from a Debian site.

> If there is something being displayed on your screen, you then have something
> capable of computing graphics. I have no clue about the configuration of your
> hardware, what's installed, what's available or not available. I don't know if
> you have a GPU or if you don't.

Sorry I thought I has said that I had no graphics card. I'm assuing
that installing a graphic card is unlikely to get a resolution other
than the deefault vga.

> What is made available to you are both your screen capability and your graphic
> card. The graphic card will do it's best do compute an image, and that's kind of
> all it does. There needs a synchronicity between the GPU and the screen polling
> rate.
>
> Your monitor carries an EDID (Extended Display Identification Data) which has
> all the necessary information for the source (Xorg and co.) how to compute
> compatible modes. If that can't be read or understood properly, you'll have a
> limited display support or nothing at all. The software running on your computer
> will then be able to tell the GPU how and when to generate an image.
>
> I you want to know more about how to display an image on a screen, I invite you
> to watch Ben Eater's instructive videos:
>
> * https://www.youtube.com/watch?v=2iURr3NBprc&t=498s
> * https://www.youtube.com/watch?v=BUTHtNrpwiI

--
Haines Brown