On Wed, 12 Jun 2002, David S. Miller wrote: >Date: Wed, 12 Jun 2002 18:08:37 -0700 (PDT) >From: David S. Miller <[EMAIL PROTECTED]> >To: [EMAIL PROTECTED] >Cc: [EMAIL PROTECTED] >Content-Type: Text/Plain; charset=us-ascii >Subject: Re: [Dri-devel] Default AGP mode > > From: "Mike A. Harris" <[EMAIL PROTECTED]> > Date: Wed, 12 Jun 2002 20:35:15 -0400 (EDT) > > It would appear that AGP mode 1x is used by default always unless > the AGPmode option is specified in the config file. (Correct me > if I'm not completely correct with that). > > I'm wondering if the default can be changed to be "the fastest > sane mode supported by the hardware and/or configured by the > BIOS". > >In fact it's wrong when the user has selected a different mode from >the BIOS setup especially on chips where we do not know how to fully >program the hardware when switching modes correctly.
Indeed. I just wasnt aware of the specifics of how things are currently done, and wether or not it is being done both optimally and safely. Stability trumping performance of course. ;o) >I think the default should be whatever mode the chipset is in >when AGP is started. Agreed, that was my opinion as well. I just wasn't 100% sure how it is currently defaulting, and I figured I'd ask here prior to examining the source code. Having the BIOS default to say 2x, and having X default to 1x, or worse, having the BIOS default to 8x and X default to 1x or 2x is the situation that I'm curious to determine if we're avoiding, or if it is a chipset specific thing, etc. Basically, someone has asked for me to default AGPMode to 4 in our config file, which I thought was absolutely crazy. The claim is that AGP defaulted to 1x, but changing it to 4x sped things up dramatically. That is what lead me to believe that the "default" being used is not the BIOS setting. I'm going to explore the source code tonight, and see what if anything I might be able to poke around. Thanks for the feedback David. -- Mike A. Harris Shipping/mailing address: OS Systems Engineer 190 Pittsburgh Ave., Sault Ste. Marie, XFree86 maintainer Ontario, Canada, P6C 5B3 Red Hat Inc. http://www.redhat.com ftp://people.redhat.com/mharris _______________________________________________________________ Sponsored by: ThinkGeek at http://www.ThinkGeek.com/ _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
