APM Does Not Function with NDIS 2 Adapter Driver

• Microsoft Windows 95

SYMPTOMS

After you install Windows 95 on a computer that supports Advanced Power Management (APM), the APM features in Windows 95 do not work.

CAUSE

This behavior occurs if you are using a real-mode (NDIS 2) network adapter driver in Windows 95.

RESOLUTION

If one is available, use a protected-mode (NDIS 3.1) driver for the network card. To determine whether a protected-mode driver is available for the network card, follow these steps:

1. Use the right mouse button to click the Network Neighborhood icon and then click Properties on the menu that appears.



2. In the "The following network components are installed" box, click the network card installed in your computer.



3. Click the Properties button. If there is an "Enhanced mode (32-bit and 16-bit) NDIS driver" option on the Driver Type tab, there is an NDIS 3.1 driver for the network card. If this option does not exist on the Driver Type tab, contact the manufacturer of the card to determine whether updated drivers exist.

MORE INFORMATION

Windows 95 rejects all APM requests if an NDIS 2 network card driver is installed. Windows 95 does this because the network mapping file (NDIS.VXD) cannot know in what state the real-mode driver would resume upon resumption of power.

Additional query words: shutdown suspend

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