HOWTO:Nvidia AGP FastWrites and Side Band Addressing

[beeldings]

Make it look like this (as it's written in the guide):

alias char-major-195* nvidia
options nvidia NVreg_EnableAGPSBA=1 NVreg_EnableAGPFW=1

Ok, the file has been edited per your instructions. However, Fast Writes is still disabled. If it helps, here's the entry for my video card in my xorg.conf file:

Section "Device"
        Identifier      "NVIDIA Corporation GeForce 6200 AGP"
        Driver          "nvidia"
        BusID           "PCI:1:0:0"
EndSection

and here is the modules section:

Section "Module"
        Load    "dbe"
        Load    "ddc"
        Load    "dri"
        Load    "extmod"
        Load    "freetype"
        Load    "glx"
        Load    "int10"
        Load    "type1"
        Load    "vbe"
        Load    "GLcore"
EndSection

According to glxinfo, my drivers are:

OpenGL version string: 2.0.2 NVIDIA 87.56

[tseliot]

1) Can you post the content of this?
sudo nano /etc/modprobe.d/nvidia-kernel-nkc

2) Did you enable Fast Writes in your BIOS?

[beeldings]

1) Can you post the content of this?
sudo nano /etc/modprobe.d/nvidia-kernel-nkc

2) Did you enable Fast Writes in your BIOS?

1) alias char-major-195* nvidia
options nvidia NVreg_EnableAGPSBA=1 NVreg_EnableAGPFW=1

2) Yes.

[beeldings]

I reviewed the original Gentoo Wiki entry and noticed this:

cat /proc/driver/nvidia/agp/host-bridge

which output the following:

Host Bridge:     PCI device 1106:0204
Fast Writes:     Not Supported
SBA:             Supported
AGP Rates:       8x 4x
Registers:       0x1f000a0b:0x00000b02

So, it's not a problem with tseliot's guide, Ubuntu, the NVIDIA drivers or the card itself, but it appears to be a problem with the motherboard's AGP interface. Even though I cannot enable Fast Writes, I found a working alternative with nvclock. I will attempt to upgrade the BIOS to see if this will correct the problem or not.

[zenwhen]

Worked for me with an Nvidia 6800nu and an Abit IS7.

[fiuman]

cat /proc/driver/nvidia/agp/status

Status:          Enabled
Driver:          NVIDIA
AGP Rate:        4x
Fast Writes:     Enabled
SBA:             Disabled

 cat /proc/driver/nvidia/agp/host-bridge

Host Bridge:     PCI device 1039:0745
Fast Writes:     Supported
SBA:             Supported
AGP Rates:       4x 2x 1x
Registers:       0x1f000217:0x00000114

 cat /proc/driver/nvidia/agp/card

Fast Writes:     Supported
SBA:             Not Supported
AGP Rates:       4x 2x 1x
Registers:       0x1f000017:0x1f000114

why in host-bridge output sba is supported and in card output is not supported???

i have a 3d prophet 2 mx gforce2 (nvidia-based)

[panurge77]

Theres no agp in my /proc/driver/nvidia
lsmod shows me agpgart is loaded
whats my problem?

[tseliot]

Theres no agp in my /proc/driver/nvidia
lsmod shows me agpgart is loaded
whats my problem?

can you post:

1) the model of your card

2) the output of this command:

lspci -n | grep 0300

[panurge77]

floyd@tchs:~$ lspci -n | grep 0300
01:00.0 0300: 10de:0141 (rev a2)

it's a geforce 6600 pci-e
duh
I just rembered agp are the cards that are not pci-e, right?

[tseliot]

I just rembered agp are the cards that are not pci-e, right?

Right