Olivier Fourdan writes: > Egbert > > > > If trident works it is better as it is accelerated. > > Vesa uses the BIOS and allows mode switching - but it is > > unacceled. It may still have quirks. fbdev is so simple > > it should always work - but unaccelerated. > > > I think I may have found something interesting (thus I copy the list ;-) > > 1) Using Vesa driver works. > 2) Passing vga=790 or vga=791 or even vga=792 at linux kernel and using > Trident driver *works* but it's very slooow, a lot slower that Vesa > driver, in 24bpp and 16bpp -I didn't try 8bpp-
Yes, there is no acceleration. We don't get the docs from trident to implement it. Accel in the XP chipset has just changed enough that the accel support for the earlier chips dosn't work any more. > 3) Never use vga=xxx and Vesa XFree driver all together. It seems to be > dangerous for the LCD display (use either normal textmode with XFree > Vesa driver or fb text mode with XFree trident driver, but *not* fb text > mode and Vesa driver !) This is surprising! > > What's puzzling me is why the trident driver with vga=xxx is so slow. I > include my XF86Config file so you can check and see by yourself (note > that I define all 3 devices, vesa, trident and fbdev and select the one > I want by uncommenting the right line in the screen section) For some reason the driver didn't attempt to register mtrr ranges. I'm investigating. Egbert. _______________________________________________ Xpert mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/xpert
