Difference between revisions of "Techwiki:Win32k/display driver loading"
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** "VgaCompatible": value of type REG_SZ, containing the device name of the vga compatible device. | ** "VgaCompatible": value of type REG_SZ, containing the device name of the vga compatible device. | ||
| − | * Legacy Device configuration key: "\Registry\Machine\System\CurrentControlSet\Hardware Profiles\Current\System\CurrentControlSet\Services\<ServiceName>\Device0" | + | * Legacy (2k) Device configuration key: "\Registry\Machine\System\CurrentControlSet\Hardware Profiles\Current\System\CurrentControlSet\Services\<ServiceName>\Device0" |
| − | * | + | * New (XP) Device configuration key: "\Registry\Machine\System\CurrentControlSet\Control\Video\{19D0ECD0-F5D9-4A4B-8005-36253C8D799D}\0000" |
** "Device Description", type is REG_SZ, human readable name ("NVIDIA GeForce 6150") | ** "Device Description", type is REG_SZ, human readable name ("NVIDIA GeForce 6150") | ||
** "InstalledDisplayDrivers": REG_MULTI_SZ, all display drivers used for this device. | ** "InstalledDisplayDrivers": REG_MULTI_SZ, all display drivers used for this device. | ||
Revision as of 16:13, 14 November 2013
- Installed devices: "HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\VIDEO". values are:
- "MaxObjectNumber": Value of type REG_DWORD, containing the max device number <maxdev>.
- "\Device\Video0" .. "\Device\Video<maxdev>": Values of type REG_SZ, each containing the registry key for the device.
- "\Device\Disc": ?
- "VgaCompatible": value of type REG_SZ, containing the device name of the vga compatible device.
- Legacy (2k) Device configuration key: "\Registry\Machine\System\CurrentControlSet\Hardware Profiles\Current\System\CurrentControlSet\Services\<ServiceName>\Device0"
- New (XP) Device configuration key: "\Registry\Machine\System\CurrentControlSet\Control\Video\{19D0ECD0-F5D9-4A4B-8005-36253C8D799D}\0000"
- "Device Description", type is REG_SZ, human readable name ("NVIDIA GeForce 6150")
- "InstalledDisplayDrivers": REG_MULTI_SZ, all display drivers used for this device.
- "VgaCompatible": REG_DWORD, 0 or 1
- "DefaultSettings.BitsPerPel", "DefaultSettings.XResolution", "DefaultSettings.YResolution", ...
- Settings are not current settings!
- "\Registry\Machine\System\CurrentControlSet\Control\Video\{19D0ECD0-F5D9-4A4B-8005-36253C8D799D}\Video"
- Contains REG_SZ "Service" -> name of the display driver service
- "\REGISTRY\Machine\System\CurrentControlSet\Services\TSDDD\Device0" (for "\Device\Disc")
- Current settings key: "\\Registry\\Machine\\SYSTEM\CurrentControlSet\Hardware Profiles\0001\System\CurrentControlSet\Control\VIDEO\{19D0ECD0-F5D9-4A4B-8005-36253C8D799D}\0000"
- The driver registry path passed to the driver entry (videoprt): "\\Registry\\Machine\\System\\ControlSet001\\Services\\<ServiceName>"
- The device profile registry key can be generated from the service name: "\\Registry\\Machine\\System\\CurrentControlSet\\Hardware Profiles\\Current\\System\\CurrentControlSet\\Services\<ServiceName>\\Device0"
- The device registry key can be queried with IoOpenDeviceRegistryKey, passing the device object: "\\Registry\\Machine\\System\ControlSet001\\Enum\\PCI\\VEN_10DE&DEV_10C3&SUBSYS_00000000&REV_A2\\4&1b94b7da&0&0020\\Device Parameters"
- Key value "VideoId", type REG_SZ, contains the GUID string of the video device: "{19D0ECD0-F5D9-4A4B-8005-36253C8D799D}"
- The parent key contains a REG_SZ value named "ClassGUID", that contains the class GUID
- The class registry key: "\\Registry\\Machine\\System\\CurrentControlSet\\Control\\Class\\<class GUID>\\<dev number>"
