David S. Miller wrote: > From: "Mike A. Harris" <[EMAIL PROTECTED]> > Date: Wed, 12 Jun 2002 21:39:23 -0400 (EDT) > > 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. > > That's almost as stupid as the current situation which defaults > to 1X AGP. > > Another known failure case (when user sets BIOS to 4X and X tries > to use it's default of 1X) is ALI M1647 chipsets. That also hangs.
Hrm, interesting. > > All of this points to using the BIOS supplied default as being the > logical way to go. Until we can be confident that every single AGP > chipset is %100 done and has %100 of the workarounds, I'd highly > suggest against trying to switch AGP modes by default. To my > knowledge only the ServerWorks AGP bits are a) written by the vendor > b) have all the necessary errata workarounds. > Actually I wrote that code for them, but for that one I did have access to their engineers. :) The main problem is that I don't see how this is going to solve any problem. It might cure some of the problems, but it also causes some. For instance I know there were some early ALi chipsets that would completely hang the machine if a Matrox G400 was in any other mode than 1X. If you search the archives of Utah-GLX and early DRI you will probably come up with many other examples of such combinations. Perhaps you might try defaulting to the BIOS default mode, but I personally think it will cause more problems then it will fix. -Jeff _______________________________________________________________ Don't miss the 2002 Sprint PCS Application Developer's Conference August 25-28 in Las Vegas - http://devcon.sprintpcs.com/adp/index.cfm?source=osdntextlink _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
