help:Xserver can't run after plugin new hardware

[jh_wang2004]

Hi all
      I have a Xserver starting problem. My computer is Dell380, onboard video card, ubuntu9.04 os, system running properly. It couldn't run Xserver after plugin a PCI Compression card(vedio encode & decode card), but it works well at windows system. i suspect it's module invoke order problem,but i can't resolve it by reconfig xorg.conf

Compare /var/log/Xorg.0.log before and after plugin PCI Compression card
before plugin PCI Compression card(system is normal)
(--) PCI:*(0 at 0:2:0) Intel Corporation 4 Series Chipset Integrated Graphics Controller rev 3, Mem @ 0xfe800000/4194304, 0xd0000000/268435456, I/O @ 0x0000ecd8/8
(II) Open ACPI successful (/var/run/acpid.socket)
... ...
Scanning /usr/share/xserver-xorg/pci directory for additional PCI ID's supported by the drivers
(II)Matched intel from file name intel.ids
(==) Matched intel for the autoconfigured driver
(==) Assigned the driver to the xf86ConfigLayout
(II) LoadModule: "intel"
(II) Loading /usr/lib/xorg/modules/drivers//intel_drv.so
... ...
(II)Primary Device is: PCI 00 at 00:02:0
... ...
after plugin PCI Compression card(Xserver can't running)
PCI: (0 at 0:2:0) Intel Corporation 4 Series Chipset Integrated Graphics Controller rev 3, Mem @ 0xfe400000/4194304, 0xc0000000/268435456, I/O @ 0x0000ecd8/8
(--)PCI: (0 at 3:0:0) Texas Instruments TMS320DM642 rev 1, Mem @ 0xd0000000/4194304, 0xfd800000/8388608, I/O @ 0x0000d8f0/16
... ...
Loading extension DRI2
Primary device is not PCI
(==) Matched vesa for the autoconfigured driver
(==) Assigned the driver to the xf86ConfigLayout
(II)LoadModule: "vesa"
... ...
(WW) Falling back to old probe method for vesa
(EE)No devices detected.

can someone help me, thanks a lot!
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