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Bug#210616: Problem with XServer on Dell Optiplex GX110

On Fri, Oct 03, 2003 at 12:27:13PM +0200, Frank Stoel wrote:
> Package: XFree86
> Version:
> Dear Branden,
> Sorry for bothering you so much with this, but something must have gone
> wrong copying the file to my Mail system.
> Attached are the correct files as they are on the DELL machine. The
> Framebuffer is off, but still I have the problem.
> Section "Device"
> 	Identifier	"Generic Video Card"
> 	Driver		"i810"
> 	VideoRam	8192
> EndSection
> (EE) Unable to open /dev/agpgart (No such device)
> (**) I810(0): Will alloc AGP framebuffer: 8192 kByte
> Fatal server error:
> AddScreen/ScreenInit failed for driver 0

Aha.  There's your problem.

Your kernel has no AGP GART support.  While for most video cards that's
just a nice feature for accelerated 3D support, for i810 systems it's
*mandatory* for X to work, because all but 512kB (IIRC) of video memory
has to be taken from main system memory.  AGP GART is the only method
used for doing this.

You may be running a kernel that doesn't have the "agpgart" feature
compiled-in, nor available as a module.  It should be autoloaded when
something tries to open /dev/agpgart.

To find out if your kernel supports AGP GART, try the following:

$ grep CONFIG_AGP /boot/config-$(uname -r)

Just to be sure, though, try the following commands:

$ modprobe agpgart

G. Branden Robinson                |        Beware of and eschew pompous
Debian GNU/Linux                   |        prolixity.
branden@debian.org                 |        -- Charles A. Beardsley
http://people.debian.org/~branden/ |

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