problem when update display driver in vista


In vista, the LDDM display driver can be updated without reboot. It work
when I try it on first display card. the first display card is the card
from which the OS is boot. But when I try to do same thing on second
card, it failed.
In there the first card is intel IGD and second card is AMD. We know
the vista is not support Heterogeneous Multi-adapter except they have
same miniport driver. so I develop a basic graphic driver to enable
both to work.
Then I want to remove first card, let vista think it have only second
card. So I can update driver of second card to full function driver
from AMD without reboot.
But when update, I got failed. I have no idea where wrong. the
following is log massage I got using windbg.

I don't know what the error "CM_PROB_FAILED_POST_START" is and what
arose it.

DevNode 0x83cc1358 for PDO 0x83cc3030
Parent 0x83cbbc88 Sibling 0x83cc11f8 Child 0000000000
InstancePath is "PCI\VEN_1002&DEV_7143&SUBSYS_30001787&REV_00
\4&2f1dab93&0&0008"
ServiceName is "r200"
State = DeviceNodeRemoved (0x312)
Previous State = DeviceNodeRemovePendingCloses (0x311)
StateHistory[06] = DeviceNodeRemovePendingCloses (0x311)
StateHistory[05] = DeviceNodeStarted (0x308)
StateHistory[04] = DeviceNodeAwaitingQueuedRemoval (0x30f)
StateHistory[03] = DeviceNodeStarted (0x308)
StateHistory[02] = DeviceNodeEnumerateCompletion (0x30d)
StateHistory[01] = DeviceNodeEnumeratePending (0x30c)
StateHistory[00] = DeviceNodeStarted (0x308)
StateHistory[19] = DeviceNodeStartPostWork (0x307)
StateHistory[18] = DeviceNodeStartCompletion (0x306)
StateHistory[17] = DeviceNodeStartPending (0x305)
StateHistory[16] = DeviceNodeResourcesAssigned (0x304)
StateHistory[15] = DeviceNodeDriversAdded (0x303)
StateHistory[14] = DeviceNodeInitialized (0x302)
StateHistory[13] = DeviceNodeUninitialized (0x301)
StateHistory[12] = DeviceNodeRemoved (0x312)
StateHistory[11] = DeviceNodeQueryRemoved (0x310)
StateHistory[10] = DeviceNodeStarted (0x308)
StateHistory[09] = DeviceNodeEnumerateCompletion (0x30d)
StateHistory[08] = DeviceNodeEnumeratePending (0x30c)
StateHistory[07] = DeviceNodeStarted (0x308)
Flags (0x00002030) DNF_ENUMERATED, DNF_IDS_QUERIED,
DNF_HAS_PROBLEM
CapabilityFlags (0x00000003) DeviceD1, DeviceD2
Problem = CM_PROB_FAILED_POST_START


please help me .

Thanks in advance


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3walker
http://www.techtalkz.com - Technology and Computer Troubleshooting Forums

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