AGP Card and inbuild VGA Chip conflict!
 

I use a Asrock 845 Chipset motherboard. It has an inbuild VGA chip. But I use a NVIDIA GeForce FX 5200 agp card as my graphics card ( selecting it the primary display card in BIOS setup). Problem is that while installing Linux a IRQ conflict arise and Kernel Panic occurs. RedHat 9 installs and runs but allways detect the VGA Chip as graphics card and so X server fails to start!! Is there any solution?

Rather than set the the onboard adaptor as secondary disable it completely.

How to do it?
 

Cannot do it! How to disable a card! Does my BIOS support it? Can u plz help me? I use ASROCK P4145GV. Thanx:rolleyes:

it should , look around a bit. or try "assign irq to agp" or however it's worded in your bios.

In CMOS setup, Peripherals, you should have the option to disable onboard VGA.

If your board is elderly (doubt it but here goes anyway) there will be a jumper to do this.

As a last resort you could disable "Assign IRQ to VGA" in setup and edit your /etc/X11/xorg.conf. Not sure how so I'll leave reading the docs to you:D

How to disable the dam VGA?
 

There is nothing called Assign IRQ in AGP in BIOS setup. No jumper to disable onboard VGG!! How to disable the VGA?Is there any way out?:confused:

I've just had a look at the manual for your mobo.

The manual is here: http://www.asrock.com/support/index_...d.asp?s=Legacy

1. You are right in saying that you cannot disable the on-board VGA adapter. All you can do is select which is the primary.

2. There is not an AGP slot. All you have is PCI slots so I am assuming that your FX5200 is a PCI card. This might affect something in your installation if at some point you told the installer that the card was an AGP one.

If you are sure that the slot is AGP (it looks different to the others, then all this post is nonsense.

I have never tried this but, maybe, if you set the Shared VGA memory to 0 (if it is possible) then this may disable the onboard card.

(Incidentally, have a good look at the capacitors on your FX5200. If any of them are "domed" at the top then you card is about to fail. Mine did on New Year's eve! The tops of the capacitors must be absolutely flat.)

Suggestion: Install without the FX5200. Then try adding it later.

Hope this helps.

Should be under Advanced/Chipset Configuration section - Set Onboard VGA Share Memory to Disabled then under Advanced/Resource Configuration set Primary Graphics Adapter to PCI if it hasnt defaulted already.

None of these solves the problem!!
 

There is nothing called Onboard VGA shared memory in BIOS setup!! There is a provision to change AGP Aperture size. Also tried to add the card after installing SUSE Linux Professional 10 but it stucks while booting.:cry:

Check your module preload file in /etc/ and disable the module.

Why disable a device when you can simply tell Linux which one to use.

You can use the keyword BusId in your xorg.conf (for Xorg) or XFree86.conf (for XFree86) in /etc/X11.

Here is what I do to identify my correct display adapter:

in my xorg.conf:
and my lspci:
shows that the card I use is 0000:00:05.0, which translates to the bus id "PCI:0:5:0". That is to say 0000:X:Y.Z translates to bus id "PCI:X:Y:Z".

Or what clinux_rulz says, I haven't tried that so I don't know

The problem however seems to be due to a hardware conflict and his m/b has very limited flexibility in CMOS setup.

I've got an Elitegroup m/b like that. Cannot disable the onboard VGA. In my case I'm not bothered 'cos it's going to be a server but I'd be very annoyed otherwise. I only found this out when looking for a solution to this problem!

It is also posible that firmware updates for your CMOS/BIOS are avaliable that extend the number of options, allowing you to deal with this issue.

As far as I can tell from the above post, your boot continues upto X and then X fails, right? If so then I believe your problem can be resolved in xorg.conf or XFree.conf in the /etc/X11 folder . . .

But if the problem lies in the booting of the actual kernel (before the /etc/init.d stuff boots), then you are in for a world full of pain, posibly leading you to having to write a hack in the the kernel's source code to bypass your problem.

I could be completely wrong and the two pci devices have the same address.

Please clarify how far your computer boots.

Heres some info i found from some other poor soul with the same m/board
"Dear Thulani,

Thanks for contacting ASRock. Due to chipset limitation, it is no way to disable onboard VGA on P4i45GV.

Sorry for the inconvenience.

Best Regards
ASRock
It is mentioned in the manuals in the small print that you have to remove vga driver before installing the agp card - of course no advice for linux users.