I running RH8.0 on a Gigabyte GA-6VTXE-based system and using an Abit GF4 MX-8X video card in the AGP slot. The BIOS is set to run the AGP at 4X (which is the default). After firing up X and poking around in /proc/driver/nvidia/agp, I see that it appears that the AGP is only running at 2X. Even the ``host-bridge'' file reports that only mode 2X and 1X are available. I have a line ``Option AGPMode 4'' in /etc/X11/XF86Config but when X starts up it spits out the message:

``(WW) NVIDIA(0): Option "AGPMode" is not used''

It doesn't matter which AGP software I'm using (the code in AGPGART or Nvidia's) the message in the XFree86 log is the same.

I've been on Gigabyte's site and didn't see anything in the firmware upgrade docs about a newer version that fixes anything having to do with AGP (and I'm not looking to load a new BIOS unless it fixes a real problem). Nvidia's site doesn't seem to mention anything either.

I'm totally happy with the way the video card is working but am wondering why the 4X rate is not available. (Well, I suppose not totally happy since I can't get the higher rate to work. :-) )

Has anyone else noticed that the rate doesn't run as high as requested?

TIA,

Rick

are you loading the agpart module when you boot up
if you type lsmod what does it show?

#lsmod
Module Size Used by Tainted: P
agpgart 18728 3 (autoclean)
.
.
.
nvidia 1592160 10 (autoclean)
.
.
.
#

Does that look out of the ordinary?

nope not to my eyes atleast. Could you post your XF86config files as well so we can get a look at it?

Sure! See below (most comments stripped out, though):
--

Section "ServerLayout"
Identifier "Simple Layout"
Screen "Screen 1" 0 0
InputDevice "Mouse1" "CorePointer"
InputDevice "Keyboard1" "CoreKeyboard"
EndSection

Section "Files"
RgbPath "/usr/X11R6/lib/X11/rgb"
FontPath "/usr/X11R6/lib/X11/fonts/local/"
FontPath "/usr/X11R6/lib/X11/fonts/misc/"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi/:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi/:unscaled"
FontPath "/usr/X11R6/lib/X11/fonts/Type1/"
FontPath "/usr/X11R6/lib/X11/fonts/Speedo/"
FontPath "/usr/X11R6/lib/X11/fonts/75dpi/"
FontPath "/usr/X11R6/lib/X11/fonts/100dpi/"
EndSection

Section "Module"

Load "dbe" # Double buffer extension
SubSection "extmod"
Option "omit xfree86-dga" # don't initialise the DGA extension
EndSubSection

Load "glx"
Load "type1"
Load "freetype" # This loads the GLX module
EndSection

Section "InputDevice"
Identifier "Keyboard1"
Driver "Keyboard"
Option "AutoRepeat" "500 30"# Specify which keyboard LEDs can be user-controlled (eg, with xset(1))
Option "XkbRules" "xfree86"
Option "XkbModel" "pc101"
Option "XkbLayout" "us"
EndSection

Section "InputDevice"
Identifier "Mouse1"
Driver "mouse"
Option "Protocol" "PS/2"
Option "Device" "/dev/mouse"# When using XQUEUE, comment out the above two lines, and uncomment
Option "Emulate3Buttons"# Option "Emulate3Timeout" "50"
EndSection

Section "Monitor"
Identifier "CTX960FL"
ModelName "CTX PR960F series"
HorizSync 30.0 - 110.0
VertRefresh 50.0 - 160.0
EndSection

Section "Device"
Identifier "Standard VGA"
Driver "vga"
VendorName "Unknown"
BoardName "Unknown"
EndSection

Section "Device"
#VideoRam 8192
# Insert Clocks lines here if appropriate
# The following options are for the Nvidia driver
#
Identifier "AGPvideo"
Driver "nvidia"
BoardName "Abit GF4 MX"
Option "AGPMode" "4"
Option "RenderAccel" "on"
Option "NvAGP" "3"
Option "NoLogo" "on"
EndSection

Section "Screen"
Identifier "Screen 1"
Device "AGPvideo"
Monitor "CTX960FL"
DefaultDepth 16

SubSection "Display"
Depth 8
Modes "1280x1024"
EndSubSection

SubSection "Display"
Depth 16
Modes "1280x1024" "1280x960" "1152x864" "1024x768" "800x600" "640x480"
EndSubSection

SubSection "Display"
Depth 24
Modes "1280x1024" "1280x960" "1152x864" "1024x768" "800x600" "640x480"
EndSubSection

EndSection
--

Anything look odd? Frankly, I've never been too sure about that ``dbe'' module but the Nvidia driver installation instructions didn't mention touching it I left it alone.

TIA,

Rick

Section "Device"
# no known options
Identifier "NVIDIA GeForce 2 MX (generic)"
Driver "nvidia"
VendorName "NVIDIA GeForce 2 MX (generic)"
BoardName "NVIDIA GeForce 2 MX (generic)"

#BusID
EndSection

thats what mine looks like try something similar see if it helps any not sure if you are running a dual head display or not

I suggest reading Appendixes F, D, G, and (if i recall) O from NVIDIA's Readme file. the problem may be due your mainboard.

Thanks. My motherboard has a VIA VT82C694T chip and the Nvidia docs mention the ``X'' version of the chip. That could be the problem though I might try fiddling with the AGP drive ``strength'' value (which is current set to ``auto'' in the BIOS) to see if that helps at all. There aren't that many values to try. :-)

Like I said earlier, the performance is great even at 2X so this is not a really big deal.