X and Fluxbox :: incorrect video memory ?

Hi

i tried dsl on 3 pc's now and on all i get a verry bad "resolution / color depth (spelling?)

if i run Xvesa -listmodes i get this message :

Xvesa -listmodes
VBE version 3.0 (Intel® 815 Chipset Video BIOS)
DAC is fixed, controller is VGA compatible, RAMDAC causes snow
Total memory: 1024 kilobytes
0x0006: 640x200x1 (monochrome) Planar (1 planes)
0x000D: 320x200x4 Planar (4 planes) (no linear framebuffer)
0x000E: 640x200x4 Planar (4 planes) (no linear framebuffer)
0x0010: 640x350x4 Planar (4 planes) (no linear framebuffer)
0x0011: 640x480x1 (monochrome) Planar (1 planes)
0x0012: 640x480x4 Planar (4 planes) (no linear framebuffer)
0x0013: 320x200x8 PseudoColor
0x011D: 320x200x8 PseudoColor (no linear framebuffer)
0x010E: 320x200x16 TrueColor [5:6:5:0] (no linear framebuffer)
0x0100: 640x400x8 PseudoColor (no linear framebuffer)
0x0127: 640x400x16 TrueColor [5:6:5:0] (no linear framebuffer)
0x0128: 640x400x24 TrueColor [8:8:8:0] (no linear framebuffer)
0x0101: 640x480x8 PseudoColor (no linear framebuffer)
0x0110: 640x480x15 TrueColor [5:5:5:0] (no linear framebuffer)
0x0111: 640x480x16 TrueColor [5:6:5:0] (no linear framebuffer)
0x0112: 640x480x24 TrueColor [8:8:8:0] (no linear framebuffer)
0x0102: 800x600x4 Planar (4 planes) (no linear framebuffer)
0x0103: 800x600x8 PseudoColor (no linear framebuffer)
0x0113: 800x600x15 TrueColor [5:5:5:0] (no linear framebuffer)
0x0114: 800x600x16 TrueColor [5:6:5:0] (no linear framebuffer)
0x0105: 1024x768x8 PseudoColor (no linear framebuffer)

dont know.. maybe i am wrong but i think the problem is that only 1 meg of video memory is found. (found 1024kb)

all my video cards have at least 8 meg (the other 2 even 64) why isnt that found ?

on the same pc i run debian and knoppix with 1280*1024*24 without no problems also in "vesa mode".

i tried the framebuffer too but same result.

does anybody has an idea ?

thanks a lot

tassilo

original here.