The !pcitree extension displays information about PCI device objects, including child PCI buses and CardBus buses, and the devices attached to them.
In this dump file, we find the original graphics driver be unloaded. It become the Microsoft standard vga driver. So we can use !pcitree to check it.
1. The graphics device is exist or not.
2. Is there any trouble in the graphics device. In this dump file, we find the sub vendor ID and sub system ID become 0.
3: kd> !pcitree
Bus 0x0 (FDO Ext fffffa8003d26e00)
(d=0, f=0) 8086d132 devext 0xfffffa8004a931b0 devstack 0xfffffa8004a93060 0600 Bridge/HOST to PCI
(d=3, f=0) 8086d138 devext 0xfffffa8004a93b70 devstack 0xfffffa8004a93a20 0604 Bridge/PCI to PCI
Bus 0x1 (FDO Ext fffffa8004aa1680)
(d=0, f=1) 1002aa58 devext 0xfffffa8004abbb70 devstack 0xfffffa8004abba20 0403 Multimedia Device/Unknown Sub Class
(d=0, f=0) 100268a1 devext 0xfffffa800418ab70 devstack 0xfffffa800418aa20 0300 Display Controller/VGA (d=8, f=0) 8086d155 devext 0xfffffa8004a941b0 devstack 0xfffffa8004a94060 0880 Base System Device/'Other' base system device
(d=8, f=1) 8086d156 devext 0xfffffa8004a94b70 devstack 0xfffffa8004a94a20 0880 Base System Device/'Other' base system device
(d=8, f=2) 8086d157 devext 0xfffffa8004a951b0 devstack 0xfffffa8004a95060 0880 Base System Device/'Other' base system device
(d=8, f=3) 8086d158 devext 0xfffffa8004a95b70 devstack 0xfffffa8004a95a20 0880 Base System Device/'Other' base system device
(d=10, f=0) 8086d150 devext 0xfffffa8004a961b0 devstack 0xfffffa8004a96060 0880 Base System Device/'Other' base system device
(d=10, f=1) 8086d151 devext 0xfffffa8004a96b70 devstack 0xfffffa8004a96a20 0880 Base System Device/'Other' base system device
(d=1a, f=0) 80863b3c devext 0xfffffa8004a971b0 devstack 0xfffffa8004a97060 0c03 Serial Bus Controller/USB
(d=1b, f=0) 80863b56 devext 0xfffffa8004a97b70 devstack 0xfffffa8004a97a20 0403 Multimedia Device/Unknown Sub Class
(d=1c, f=0) 80863b42 devext 0xfffffa8004a981b0 devstack 0xfffffa8004a98060 0604 Bridge/PCI to PCI
Bus 0x2 (FDO Ext fffffa8004aa2e00)
(d=0, f=0) 80864232 devext 0xfffffa8004abdb70 devstack 0xfffffa8004abda20 0280 Network Controller/'Other'
(d=1c, f=1) 80863b44 devext 0xfffffa8004a98b70 devstack 0xfffffa8004a98a20 0604 Bridge/PCI to PCI
Bus 0x3 (FDO Ext fffffa8004aa27b0)
No devices have been enumerated on this bus.
(d=1c, f=3) 80863b48 devext 0xfffffa8004a991b0 devstack 0xfffffa8004a99060 0604 Bridge/PCI to PCI
Bus 0x5 (FDO Ext fffffa8004aa3190)
No devices have been enumerated on this bus.
(d=1c, f=4) 80863b4a devext 0xfffffa8004a99b70 devstack 0xfffffa8004a99a20 0604 Bridge/PCI to PCI
Bus 0x8 (FDO Ext fffffa8004aa3b40)
No devices have been enumerated on this bus.
(d=1c, f=5) 80863b4c devext 0xfffffa8004a9a1b0 devstack 0xfffffa8004a9a060 0604 Bridge/PCI to PCI
Bus 0x9 (FDO Ext fffffa8004aa4190)
(d=0, f=0) 14e41692 devext 0xfffffa8004ac41b0 devstack 0xfffffa8004ac4060 0200 Network Controller/Ethernet
(d=1d, f=0) 80863b34 devext 0xfffffa8004a9ab70 devstack 0xfffffa8004a9aa20 0c03 Serial Bus Controller/USB
(d=1e, f=0) 80862448 devext 0xfffffa8004a9b1b0 devstack 0xfffffa8004a9b060 0604 Bridge/PCI to PCI
Bus 0xc (FDO Ext fffffa8004aa4e00)
No devices have been enumerated on this bus.
(d=1f, f=0) 80863b0b devext 0xfffffa8004a9bb70 devstack 0xfffffa8004a9ba20 0601 Bridge/PCI to ISA
(d=1f, f=2) 80863b2f devext 0xfffffa8004a9c1b0 devstack 0xfffffa8004a9c060 0106 Mass Storage Controller/Unknown Sub Class
(d=1f, f=3) 80863b30 devext 0xfffffa8004a9cb70 devstack 0xfffffa8004a9ca20 0c05 Serial Bus Controller/Unknown Sub Class
(d=1f, f=6) 80863b32 devext 0xfffffa8004a9d1b0 devstack 0xfffffa8004a9d060 1180 Unknown Base Class/Unknown Sub Class
Bus 0xff (FDO Ext fffffa8003d2adc0)
(d=0, f=0) 80862c52 devext 0xfffffa8004aa7b70 devstack 0xfffffa8004aa7a20 0600 Bridge/HOST to PCI
(d=0, f=1) 80862c81 devext 0xfffffa8004aa81b0 devstack 0xfffffa8004aa8060 0600 Bridge/HOST to PCI
(d=2, f=0) 80862c90 devext 0xfffffa8004aa8b70 devstack 0xfffffa8004aa8a20 0600 Bridge/HOST to PCI
(d=2, f=1) 80862c91 devext 0xfffffa8004aa91b0 devstack 0xfffffa8004aa9060 0600 Bridge/HOST to PCI
(d=3, f=0) 80862c98 devext 0xfffffa8004aa9b70 devstack 0xfffffa8004aa9a20 0600 Bridge/HOST to PCI
(d=3, f=1) 80862c99 devext 0xfffffa8004aaa1b0 devstack 0xfffffa8004aaa060 0600 Bridge/HOST to PCI
(d=3, f=4) 80862c9c devext 0xfffffa8004aaab70 devstack 0xfffffa8004aaaa20 0600 Bridge/HOST to PCI
(d=4, f=0) 80862ca0 devext 0xfffffa8004aab1b0 devstack 0xfffffa8004aab060 0600 Bridge/HOST to PCI
(d=4, f=1) 80862ca1 devext 0xfffffa8004aabb70 devstack 0xfffffa8004aaba20 0600 Bridge/HOST to PCI
(d=4, f=2) 80862ca2 devext 0xfffffa8004aac1b0 devstack 0xfffffa8004aac060 0600 Bridge/HOST to PCI
(d=4, f=3) 80862ca3 devext 0xfffffa8004aacb70 devstack 0xfffffa8004aaca20 0600 Bridge/HOST to PCI
(d=5, f=0) 80862ca8 devext 0xfffffa8004aad1b0 devstack 0xfffffa8004aad060 0600 Bridge/HOST to PCI
(d=5, f=1) 80862ca9 devext 0xfffffa8004aadb70 devstack 0xfffffa8004aada20 0600 Bridge/HOST to PCI
(d=5, f=2) 80862caa devext 0xfffffa8004aaf1b0 devstack 0xfffffa8004aaf060 0600 Bridge/HOST to PCI
(d=5, f=3) 80862cab devext 0xfffffa8004aafb70 devstack 0xfffffa8004aafa20 0600 Bridge/HOST to PCI
Total PCI Root busses processed = 2
Total PCI Segments processed = 1
3: kd> !devstack 0xfffffa800418aa20
!DevObj !DrvObj !DevExt ObjectName
fffffa80045a2670 \Driver\ACPI fffffa800838a010
> fffffa800418aa20 \Driver\pci fffffa800418ab70 NTPNP_PCI0040
!DevNode fffffa80084569c0 :
DeviceInst is "PCI\VEN_1002&DEV_68A1&SUBSYS_00000000&REV_00\4&36714c63&0&0018"
ServiceName is "vga"3: kd> !devstack 0xfffffa8004abba20
!DevObj !DrvObj !DevExt ObjectName
fffffa8005fd8200 \Driver\HDAudBus fffffa8005feaf60
> fffffa8004abba20 \Driver\pci fffffa8004abbb70 NTPNP_PCI0037
!DevNode fffffa8004ab9460 :
DeviceInst is "PCI\VEN_1002&DEV_AA58&SUBSYS_030A1025&REV_00\4&36714c63&0&0118"
ServiceName is "HDAudBus"
Bus 0x0 (FDO Ext fffffa8003d26e00)
(d=0, f=0) 8086d132 devext 0xfffffa8004a931b0 devstack 0xfffffa8004a93060 0600 Bridge/HOST to PCI
(d=3, f=0) 8086d138 devext 0xfffffa8004a93b70 devstack 0xfffffa8004a93a20 0604 Bridge/PCI to PCI
Bus 0x1 (FDO Ext fffffa8004aa1680)
(d=0, f=1) 1002aa58 devext 0xfffffa8004abbb70 devstack 0xfffffa8004abba20 0403 Multimedia Device/Unknown Sub Class
(d=0, f=0) 100268a1 devext 0xfffffa800418ab70 devstack 0xfffffa800418aa20 0300 Display Controller/VGA (d=8, f=0) 8086d155 devext 0xfffffa8004a941b0 devstack 0xfffffa8004a94060 0880 Base System Device/'Other' base system device
(d=8, f=1) 8086d156 devext 0xfffffa8004a94b70 devstack 0xfffffa8004a94a20 0880 Base System Device/'Other' base system device
(d=8, f=2) 8086d157 devext 0xfffffa8004a951b0 devstack 0xfffffa8004a95060 0880 Base System Device/'Other' base system device
(d=8, f=3) 8086d158 devext 0xfffffa8004a95b70 devstack 0xfffffa8004a95a20 0880 Base System Device/'Other' base system device
(d=10, f=0) 8086d150 devext 0xfffffa8004a961b0 devstack 0xfffffa8004a96060 0880 Base System Device/'Other' base system device
(d=10, f=1) 8086d151 devext 0xfffffa8004a96b70 devstack 0xfffffa8004a96a20 0880 Base System Device/'Other' base system device
(d=1a, f=0) 80863b3c devext 0xfffffa8004a971b0 devstack 0xfffffa8004a97060 0c03 Serial Bus Controller/USB
(d=1b, f=0) 80863b56 devext 0xfffffa8004a97b70 devstack 0xfffffa8004a97a20 0403 Multimedia Device/Unknown Sub Class
(d=1c, f=0) 80863b42 devext 0xfffffa8004a981b0 devstack 0xfffffa8004a98060 0604 Bridge/PCI to PCI
Bus 0x2 (FDO Ext fffffa8004aa2e00)
(d=0, f=0) 80864232 devext 0xfffffa8004abdb70 devstack 0xfffffa8004abda20 0280 Network Controller/'Other'
(d=1c, f=1) 80863b44 devext 0xfffffa8004a98b70 devstack 0xfffffa8004a98a20 0604 Bridge/PCI to PCI
Bus 0x3 (FDO Ext fffffa8004aa27b0)
No devices have been enumerated on this bus.
(d=1c, f=3) 80863b48 devext 0xfffffa8004a991b0 devstack 0xfffffa8004a99060 0604 Bridge/PCI to PCI
Bus 0x5 (FDO Ext fffffa8004aa3190)
No devices have been enumerated on this bus.
(d=1c, f=4) 80863b4a devext 0xfffffa8004a99b70 devstack 0xfffffa8004a99a20 0604 Bridge/PCI to PCI
Bus 0x8 (FDO Ext fffffa8004aa3b40)
No devices have been enumerated on this bus.
(d=1c, f=5) 80863b4c devext 0xfffffa8004a9a1b0 devstack 0xfffffa8004a9a060 0604 Bridge/PCI to PCI
Bus 0x9 (FDO Ext fffffa8004aa4190)
(d=0, f=0) 14e41692 devext 0xfffffa8004ac41b0 devstack 0xfffffa8004ac4060 0200 Network Controller/Ethernet
(d=1d, f=0) 80863b34 devext 0xfffffa8004a9ab70 devstack 0xfffffa8004a9aa20 0c03 Serial Bus Controller/USB
(d=1e, f=0) 80862448 devext 0xfffffa8004a9b1b0 devstack 0xfffffa8004a9b060 0604 Bridge/PCI to PCI
Bus 0xc (FDO Ext fffffa8004aa4e00)
No devices have been enumerated on this bus.
(d=1f, f=0) 80863b0b devext 0xfffffa8004a9bb70 devstack 0xfffffa8004a9ba20 0601 Bridge/PCI to ISA
(d=1f, f=2) 80863b2f devext 0xfffffa8004a9c1b0 devstack 0xfffffa8004a9c060 0106 Mass Storage Controller/Unknown Sub Class
(d=1f, f=3) 80863b30 devext 0xfffffa8004a9cb70 devstack 0xfffffa8004a9ca20 0c05 Serial Bus Controller/Unknown Sub Class
(d=1f, f=6) 80863b32 devext 0xfffffa8004a9d1b0 devstack 0xfffffa8004a9d060 1180 Unknown Base Class/Unknown Sub Class
Bus 0xff (FDO Ext fffffa8003d2adc0)
(d=0, f=0) 80862c52 devext 0xfffffa8004aa7b70 devstack 0xfffffa8004aa7a20 0600 Bridge/HOST to PCI
(d=0, f=1) 80862c81 devext 0xfffffa8004aa81b0 devstack 0xfffffa8004aa8060 0600 Bridge/HOST to PCI
(d=2, f=0) 80862c90 devext 0xfffffa8004aa8b70 devstack 0xfffffa8004aa8a20 0600 Bridge/HOST to PCI
(d=2, f=1) 80862c91 devext 0xfffffa8004aa91b0 devstack 0xfffffa8004aa9060 0600 Bridge/HOST to PCI
(d=3, f=0) 80862c98 devext 0xfffffa8004aa9b70 devstack 0xfffffa8004aa9a20 0600 Bridge/HOST to PCI
(d=3, f=1) 80862c99 devext 0xfffffa8004aaa1b0 devstack 0xfffffa8004aaa060 0600 Bridge/HOST to PCI
(d=3, f=4) 80862c9c devext 0xfffffa8004aaab70 devstack 0xfffffa8004aaaa20 0600 Bridge/HOST to PCI
(d=4, f=0) 80862ca0 devext 0xfffffa8004aab1b0 devstack 0xfffffa8004aab060 0600 Bridge/HOST to PCI
(d=4, f=1) 80862ca1 devext 0xfffffa8004aabb70 devstack 0xfffffa8004aaba20 0600 Bridge/HOST to PCI
(d=4, f=2) 80862ca2 devext 0xfffffa8004aac1b0 devstack 0xfffffa8004aac060 0600 Bridge/HOST to PCI
(d=4, f=3) 80862ca3 devext 0xfffffa8004aacb70 devstack 0xfffffa8004aaca20 0600 Bridge/HOST to PCI
(d=5, f=0) 80862ca8 devext 0xfffffa8004aad1b0 devstack 0xfffffa8004aad060 0600 Bridge/HOST to PCI
(d=5, f=1) 80862ca9 devext 0xfffffa8004aadb70 devstack 0xfffffa8004aada20 0600 Bridge/HOST to PCI
(d=5, f=2) 80862caa devext 0xfffffa8004aaf1b0 devstack 0xfffffa8004aaf060 0600 Bridge/HOST to PCI
(d=5, f=3) 80862cab devext 0xfffffa8004aafb70 devstack 0xfffffa8004aafa20 0600 Bridge/HOST to PCI
Total PCI Root busses processed = 2
Total PCI Segments processed = 1
3: kd> !devstack 0xfffffa800418aa20
!DevObj !DrvObj !DevExt ObjectName
fffffa80045a2670 \Driver\ACPI fffffa800838a010
> fffffa800418aa20 \Driver\pci fffffa800418ab70 NTPNP_PCI0040
!DevNode fffffa80084569c0 :
DeviceInst is "PCI\VEN_1002&DEV_68A1&SUBSYS_00000000&REV_00\4&36714c63&0&0018"
ServiceName is "vga"3: kd> !devstack 0xfffffa8004abba20
!DevObj !DrvObj !DevExt ObjectName
fffffa8005fd8200 \Driver\HDAudBus fffffa8005feaf60
> fffffa8004abba20 \Driver\pci fffffa8004abbb70 NTPNP_PCI0037
!DevNode fffffa8004ab9460 :
DeviceInst is "PCI\VEN_1002&DEV_AA58&SUBSYS_030A1025&REV_00\4&36714c63&0&0118"
ServiceName is "HDAudBus"
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