AGP 2x?!

darkfame · 03-07-03, 09:33 PM

Acording my XFree LOG, my GeForce Ti4600 is running on AGP 2x. Could this be why I have performance issues under Linux? Isn't this a 4x card? How to fix?

Delleon · 03-07-03, 10:14 PM

This should tell you what your card is capable of:

'cat /proc/driver/nvidia/agp/card'

This should tell you what your AGP chipset is capable of:

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

If both of the above support AGP 4x, then you can force it by running:

'insmod nvidia NVreg_ReqAGPRate=4'

If this causes your system to freeze, you may need to tweak your BIOS settings a bit.

**Thunderbird** · 03-08-03, 02:39 AM

On various chipsets 4x AGP and stuff like FW and SBA can be unstable. The drivers detect what is best for your system. It doesn't really matter if you are using 2x or 4x since both are about as fast. Sometimes 2x is faster and sometimes 4x. If AGP would be off or running at 1x it would be slower.

darkfame · 03-08-03, 07:58 AM

I see, but I have some performance issues.
The framerate is a bit jumpy... Is this usual for the linux driver? This doesn't happend when I use the Windows driver (which I seldom do nowadays).

03-07-03, 09:33 PM	#1
darkfame GeForce4 Ti4600 Join Date: Mar 2003 Location: Norway Posts: 4	AGP 2x?! Acording my XFree LOG, my GeForce Ti4600 is running on AGP 2x. Could this be why I have performance issues under Linux? Isn't this a 4x card? How to fix?

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03-07-03, 10:14 PM	#2
Delleon Geforce4 Join Date: Feb 2003 Location: Winnipeg, Canada Posts: 20	This should tell you what your card is capable of: 'cat /proc/driver/nvidia/agp/card' This should tell you what your AGP chipset is capable of: 'cat /proc/driver/nvidia/agp/host-bridge' If both of the above support AGP 4x, then you can force it by running: 'insmod nvidia NVreg_ReqAGPRate=4' If this causes your system to freeze, you may need to tweak your BIOS settings a bit.

03-08-03, 02:39 AM	#3
Thunderbird Join Date: Jul 2002 Location: Netherlands, Europe Posts: 2,105	On various chipsets 4x AGP and stuff like FW and SBA can be unstable. The drivers detect what is best for your system. It doesn't really matter if you are using 2x or 4x since both are about as fast. Sometimes 2x is faster and sometimes 4x. If AGP would be off or running at 1x it would be slower.

03-08-03, 07:58 AM	#4
darkfame GeForce4 Ti4600 Join Date: Mar 2003 Location: Norway Posts: 4	I see, but I have some performance issues. The framerate is a bit jumpy... Is this usual for the linux driver? This doesn't happend when I use the Windows driver (which I seldom do nowadays).