Which X driver to use for genfb?

[Paul Goyette <paul%whooppee.com@localhost>]

After much assistance, I've finally got my new Gateway box running.  Now 
I need to get X windows up.

The machine has an E1-2500 processor, and claims "Radeon HD 8240" 
on-board graphics.  However, booting a GENERIC kernel gives this dmesg:

genfb0 at pci0 dev 1 function 0: vendor 0x1002 product 0x9838 (rev.0x00)
genfb0: framebuffer at 0xc0000000, size 800x600, depth 32, stride 3328
wsdisplay0 at genfb0 ...

My Xorg.log contains

        [ 1029.726] (--) PCI:*(0:0:1:0) 1002:9838:1025:0800 rev 0, Mem @
        0xc0000000/268435456, 0xd0000000/8388608, I/O @ 0x0000f000,
        BIOS @0x???????131072
        ...
        [ 1029.802] (II) Loading /usr/X11R7/lib/modules/drivers/vesa_drv.so
        [ 1029.802] (WW) VGA arbiter: cannot open kernel arbiter, no
        multi-card support
        ...
        [ 1029.847] (II) VESA(0): initializing int10
        [ 1029.847] (WW) VESA(0): remove MTRR a0000 - c0000
        [ 1029.848] (WW) VESA(0): remove MTRR c0000 - 100000
        [ 1029.848] (EE) VESA(0): V_BIOS address 0xd00 out of range
        ...
        [ 1029.849] (EE) Screen(s) found, but none have a usable
        configuration
        [ 1029.849]
        Fatal server error:
        [ 1029.849] No screens found

Any hint on how to proceed?


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