Hello developers,
in Windows 2000 we have the situation, that if there is a non-plug-and-play-capable driver active, then the shutdown options "standby" and "hibernation" are not available. For example the driver vga.sys of Windows 2000 prevents the system from going into standby mode.
When vga.sys is replaced with a plug-and-play-capable driver by installing one and then restarting, then the power options are available.
My graphics driver is capable of performing mode switching and turning off the display after a certain time of inactivity directly after the installation. But the additional power options are only available after the user has restarted the computer.
videoprt.sys and my driver do not receive any IRP_MJ_POWER queries until the system has been restarted.
When I try to enter the standby mode manually by calling ntdll.dll/NtSetSystemPowerState before the reboot I get a STATUS_CANCELLED and a STATUS_SUCCESS after the reboot.
I am out of ideas about what the operating system is waiting for and why it needs the restart.
Does anyone have an idea what the problem could be?
Many thanks.
Hello developers, in Windows 2000 we have the situation, that if there is a non-plug-and-play-capable driver active, then the shutdown options "standby" and "hibernation" are not available. For example the driver vga.sys of Windows 2000 prevents the system from going into standby mode. When vga.sys is replaced with a plug-and-play-capable driver by installing one and then restarting, then the power options are available. My graphics driver is capable of performing mode switching and turning off the display after a certain time of inactivity directly after the installation. But the additional power options are only available after the user has restarted the computer. videoprt.sys and my driver do not receive any IRP_MJ_POWER queries until the system has been restarted. When I try to enter the standby mode manually by calling ntdll.dll/NtSetSystemPowerState before the reboot I get a STATUS_CANCELLED and a STATUS_SUCCESS after the reboot. I am out of ideas about what the operating system is waiting for and why it needs the restart. Does anyone have an idea what the problem could be? Many thanks.