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-   -   AMD 760MP, only AGP 2X (http://www.nvnews.net/vbulletin/showthread.php?t=7417)

rmtnez 02-11-03 05:42 AM

AMD 760MP, only AGP 2X
 
After recompiling nvidia driver 1.0-4191, I can not get AGP 4X working.

The data are:

[root@lambada root]# cat /proc/driver/nvidia/agp/*
Fast Writes: Supported
SBA: Supported
AGP Rates: 4x 2x 1x
Registers: 0x1f000217:0x0f000102
Host Bridge: AMD 760MP
Fast Writes: Not Supported
SBA: Supported
AGP Rates: 2x 1x
Registers: 0x0f000203:0x00000102
Status: Enabled
Driver: NVIDIA
AGP Rate: 2x
Fast Writes: Disabled
SBA: Disabled


Please, help ...
Thanks in advance,
Rafa.

bwkaz 02-11-03 07:38 AM

Your chipset is reporting to the driver that it doesn't support anything higher than 2x mode.

Are you positive that 4x is enabled in your BIOS?

Does using agpgart work any better?

Wolfman [TWP] 02-11-03 08:54 AM

Check your BIOS to see if it's set to 4x. I'm running a 760MP chipset mother board and I've got it to run in 4x mode.

# cat /proc/driver/nvidia/agp/*
Fast Writes: Supported
SBA: Supported
AGP Rates: 4x 2x 1x
Registers: 0x1f000217:0x0f000314
Host Bridge: AMD 760MP
Fast Writes: Supported
SBA: Supported
AGP Rates: 4x 2x 1x
Registers: 0x0f000217:0x00000314
Status: Enabled
Driver: NVIDIA
AGP Rate: 4x
Fast Writes: Enabled
SBA: Enabled

rmtnez 02-11-03 09:01 AM

BIOS AGP mode is set to 4X

Wolfman [TWP] 02-11-03 09:02 AM

Which Mother board and video card are you running??

rmtnez 02-11-03 09:12 AM

I use a Dual AMD A7M266-D and a GeForce4 Ti 4600

Wolfman [TWP] 02-11-03 09:15 AM

Ah so it's an ASUS board...

I've got pretty much the same setup, except my mother board is a Tyan Tiger MPX, and a MSI GF4 Ti4600 video card.

The only thing I could suggest, is to see if ASUS have a BIOS update.. And try that..

warer 02-11-03 10:36 AM

warer root # cat /proc/driver/nvidia/agp/*
Fast Writes: Supported
SBA: Supported
AGP Rates: 4x 2x 1x
Registers: 0x1f000217:0x0f000104
Host Bridge: AMD 760MP
Fast Writes: Supported
SBA: Supported
AGP Rates: 4x 2x 1x
Registers: 0x0f000217:0x00000104
Status: Enabled
Driver: AGPGART
AGP Rate: 4x
Fast Writes: Disabled
SBA: Disabled

As you can see i get AGP 4x using agoart in the kernel, are you?
MSI ti4400 card

michael 02-11-03 04:32 PM

I am having the same probs with 760 MP but with ti4200 both asus
 
seems like I am having similar problems :

wolfman could you post your config

eg. XF86Config

Next thing I gonna try is a bios upgrade from asus. Maybe it helps.

Regards

Michael

Wolfman [TWP] 02-11-03 09:47 PM

Michael:

As you can see from my post above (Showing my agp stats), that I'm able to enable all the features of the Mbrd and Video card. Remembering of course that I use a Tyan Tiger MPX mother board and MSI GF4 Ti4600 video card. I'll post you my XF86Config file details as soon as I get home tonight.. (I'm currently at work, and have no access to the system)

I seem pretty sure that the problems you guy's are having will be BIOS related, or could even be a mother board design flaw. (MSI Dual Athlon boards have similar problems, and I also have one of them too. But this issue doesn't happen with the Tyan)

michael 02-12-03 02:59 AM

:-( Motherboard flaw. I hope not
 
*urgs* pls not. I bougth this one because of my good experiences with ASUS Dual Boards. Anyway _currently_ I am at work and preparing the stuff necc. for an bios upgrade.

:-) My home box runs linux exclusivly and I dont even have a bootable dos-disk.

Kind regards

Michael

Wolfman [TWP] 02-12-03 06:41 AM

Ok, here are the extracts from both my XF86Config file and /etc/modules.conf. You will need both files to be edited to get it to work.

You will need these two lines in your 'modules.conf' file.

alias char-major-195 nvidia
options nvidia NVreg_EnableAGPFW=1 NVreg_EnableAGPSBA=1 NVreg_SyncCrtcs=0

And this is how I setup the entries in my 'XF86Config' file.

Section "Device"
# No known options
#
# "1" Enable NVAGP Support
# "2" Enable AGPGART Support
# "3" Try AGPGART else NVAGP
# BusID
Identifier "NVIDIA GeForce 4 (generic)"
Driver "nvidia"
VendorName "NVIDIA GeForce 4 (generic)"
BoardName "NVIDIA GeForce 4 (generic)"
VideoRam 131072
Option "NvAGP" "1"
Option "DigitalVibrance" "2"
Option "CursorShadow" "1"
Option "RenderAccel" "true"
EndSection

The side band addressing section you won't need, as it will not increase the performance. I just left it in for the hell of it. (Basically to test to see if it does any better, which it doesn't)


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