xscreensaver-demo crashing on Sarge

[Daniel Ramaley <daniel.ramaley@DRAKE.EDU>]

Hello. I am using Sarge on a Dell OptiPlex GX 110 (which i believe has 
i810 graphics) and am trying to get xscreensaver setup. When i run 
xscreensaver-demo, i get errors on the terminal from which i ran it. 
Some screen savers work perfectly when i preview them, but most of them 
cause xscreensaver-demo to crash when i leave the preview. I've 
included a sample of the types of errors that occur on the terminal. Is 
there something i'm missing? I have the DRI module loaded in my 
/etc/X11/XF86Config-4. If necessary, i can post my XF86Config-4 and/or 
a list of packages that are installed.

Also, some of the screen savers display error messages in yellow text in 
the upper left corner of the display while they are running. The screen 
savers that do this seem to work OK, but they give errors. Is there a 
way to send errors to /dev/null instead of writing them on the screen?

Sample xscreensaver-demo error output:

[dramaley@debian dramaley]$ xscreensaver-demo 
Xlib:  extension "XFree86-DRI" missing on display ":0.0".
Xlib:  extension "XFree86-DRI" missing on display ":0.0".
Segmentation fault
[dramaley@debian dramaley]$ 
X error in atlantis:
X Error of failed request:  GLXBadDrawable
  Major opcode of failed request:  144 (GLX)
  Minor opcode of failed request:  5 (X_GLXMakeCurrent)
  Serial number of failed request:  407
  Current serial number in output stream:  407
xscreensaver-demo 
Xlib:  extension "XFree86-DRI" missing on display ":0.0".
Segmentation fault
[dramaley@debian dramaley]$ 
X error in attraction:
X Error of failed request:  BadDrawable (invalid Pixmap or Window 
parameter)
  Major opcode of failed request:  71 (X_PolyFillArc)
  Resource id in failed request:  0x1800161
  Serial number of failed request:  4948
  Current serial number in output stream:  4966
xscreensaver-demo 
attraction: domain error: forces on balls too great
Segmentation fault
[dramaley@debian dramaley]$ xscreensaver-demo 
attraction: domain error: forces on balls too great
Segmentation fault
[dramaley@debian dramaley]$ 
X error in attraction:
X Error of failed request:  BadDrawable (invalid Pixmap or Window 
parameter)
  Major opcode of failed request:  65 (X_PolyLine)
  Resource id in failed request:  0x18003d9
  Serial number of failed request:  955
  Current serial number in output stream:  957
xscreensaver-demo 
Xlib:  extension "XFree86-DRI" missing on display ":0.0".
Xlib:  extension "XFree86-DRI" missing on display ":0.0".
Segmentation fault
[dramaley@debian dramaley]$ 
X error in barcode:
X Error of failed request:  BadDrawable (invalid Pixmap or Window 
parameter)
  Major opcode of failed request:  72 (X_PutImage)
  Resource id in failed request:  0x18005dc
  Serial number of failed request:  135
  Current serial number in output stream:  136
xscreensaver-demo 
Segmentation fault
[dramaley@debian dramaley]$ 
X error in blaster:
X Error of failed request:  BadDrawable (invalid Pixmap or Window 
parameter)
  Major opcode of failed request:  71 (X_PolyFillArc)
  Resource id in failed request:  0x1800218
  Serial number of failed request:  6177
  Current serial number in output stream:  6204
xscreensaver-demo 
Xlib:  extension "XFree86-DRI" missing on display ":0.0".
Xlib:  extension "XFree86-DRI" missing on display ":0.0".
Xlib:  extension "XFree86-DRI" missing on display ":0.0".
Segmentation fault

-- 
------------------------------------------------------------------------
Dan Ramaley
Digital Media Library Specialist
(515) 271-1934
Cowles Library 140, Drake University