debian的X问题

mikeloop

我用的是 debian
VGA信息：
00:02.0 VGA compatible controller: Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 03) (prog-if 00 [VGA])
        Subsystem: ASUSTeK Computer Inc. Unknown device 2562
        Flags: bus master, fast devsel, latency 0, IRQ 177
        Memory at e8000000 (32-bit, prefetchable) [size=128M]
        Memory at e7800000 (32-bit, non-prefetchable) [size=512K]
        Capabilities: <access denied>
我用i810的驱动，用intel的X起不来
用i810起动X后，屏幕显示不均匀，中间有一块象龙卷风似的黑块
请教怎么回事？