|Posted on Monday, January 14, 2002 - 9:25 pm: |
First I would like to say thank you to Trish and all the other fine people in this forum and I'm glad Trish added this section.
So you've put together that brand new AMD or Intel CPU and VIA chipset motherboard and added the memory and the drives along with the High Dollar Geforce video card you have been wanting to get for a while now only to find out that when you turn the computer on the fans whirr and the lights light but nothing shows up on the screen so you press reset 2 or 3 or 4 times and finally the monitor kicks in so you set everything up and load the operating system and reboot and ARRGH no monitor again so reset reset and reset again until the screen comes on again. Welcome to the VIA 4X AGP chipset motherboard. It would appear that VIA has a less than stellar AGP support (compared to Intel) and timing issues are a big problem with high end GPU's. VIA has a work around implemented into the BIOS setup called the AGP Driving Control.
Step 1: At boot enter the BIOS by pressing the DEL key (for most boards) and arrow down to Advanced Chipset Options here you will find a setting called AGP Driving Control. By default this setting is usually set to auto mode, change it to manual mode than another setting will appear called AGP Driving Value.
Step 2: This Value should be entered in a Hexadecimal format from 00 to ff. Different motherboards recommend different values, however, I have found (mostly by trial and error) that the value DA or DB seems to work 99.9% of the time. ASUS and TYAN both are recommending CE as a value and this may work very well for most Video cards as well (I have only used TYAN motherboards and ASUS video cards for testing) but my computers would lock under heavy load with CE as a value so I changed to DA and haven't had a bit of trouble for a long time now. Your results may vary.
BE WARNED: that an incorrect value may render your computer unbootable. A clear cmos is needed to start over again.
Step 3:Save your changes to the Bios, reboot and test test test.
Well, thats it in a nutshell
|Posted on Tuesday, January 29, 2002 - 8:41 pm: |
This is ___. If you follow these directions you will certainly cause a fatal screw up. Most of us cannot conceive of the complexity involved in these suggestions, IMHO. The VIA 4X AGP Chipset Motherboard has had and continues to have significant timing issues. The "work around" mentioned here is a ruse, IMHO, offered to create a virtual smokescreen over the fact that Intel "gets it" and their competitors don't. Let's not accept poor performance! Demand the best programming and optimum configuration. Oh, and God Bless America too, of course!
(Edited by Trish. Yes, God Bless America, but I'm sure he wouldn't like to hear foul language either! Please, keep it clean!)
|Carnack The Magnificent|
|Posted on Tuesday, January 29, 2002 - 10:29 pm: |
That fact of the matter is Mr. Cheney.com, that alot of people bought computers from company's every where utilising these chipsets on both AMD and Intel systems because they didn't research before buying. These instructions were merely an attempt to provide a work around for certain issues pertaining to a particular chipset that in the minds of many is believed to be a most capable type. Frankly, IMHO, I don't care if it's Via, Intel, AMD, Mattel, Lincoln Logs, or a freakin' Erector Set. If it doesn't work, fix it by any means possible.
|Carnack the Magnificent|
|Posted on Tuesday, January 29, 2002 - 10:34 pm: |
One other little thing here before the rant is done, do ya see the heading above that says TECH TIPS and TWEAKS?
|Posted on Wednesday, January 30, 2002 - 7:47 pm: |
that's weird, i have been working with via chipsets for a few years, but on fic boards, and ATI's are the vid cards i had problems with, also, i have an asus board with a via chipset, using an agp g-force 2, msi brand, it works perfect, no need for tweaks at all, but of course, i don't use msi's drivers either, i use nvidia drivers. can you be more specific? meaning what brand cards? drivers? any other motherboards?
|Posted on Wednesday, January 30, 2002 - 9:00 pm: |
There really doesn't seem to be specifics. The problem seems to affect AMD and VIA just as much as the Intel and VIA solutions and also seems more prevalent with the GeForce line of cards but that doesn't limit it by any means and 2X AGP transfer doesn't need it, it was more of an issue with 4X AGP enableing. Some of the boards involved were Aopen, Soyo and Asus as well as Abit and Tyan.
And not every board was affected, what worked well in one system may not work well in another identical system. http://www.viahardware.com/agp4xfix.shtm has a writeup that goes more indepth as to the use of WPCREDIT and WPCRSET to alter AGP Drive value when the bios doesn't support it. There are hundreds of Forum posts all over the net regarding this problem. Being a system builder means seeing it alot. It's a funny thing but people want to use what they pay for. I know I do.