[NCLUG] XFree86 4.1.0 slow compared to 3.3.6?

[Bryan Stillwell]

>1. the new X server isn't set up for acceleration properly.

Make sure you're using the proper X server.  Since you have the Matrox
G200, the server you'll want to use is mga.


>2. i'm using the frame buffer x server, not the one specifically for
>   my card.

Check your /etc/X11/XF86Config-4 file and make sure it isn't set to use
the FBDev driver, but the mga driver.  (/etc/X11/XF86Config is used by
XF 3.3.x, and is ignored by XF 4.x)


>3. the kernel (2.4.9-7) is slowing things down somehow (AGP not set up
>   correctly, DRI weirdness, who knows).

You could try checking the .config file from the SRPM and make sure the
proper AGP, DRI/DRM, and MTRR (You want write combining when writing to
video ram usually) options are set.  A lot of those settings can be
checked by running glxinfo and cating /proc/mtrr.

Other than that, you should try looking thru /var/log/XFree86.0.log.

Bryan

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