Stuff stops working. Some features, like your wireless network, your cordless
mouse, or your scanner stop working after waking up, at least until
you restart Windows. (Hint: look for new drivers or a firmware update
for your device.)
Unfortunately, all of these problems are quite common, mostly because of
the inconsistent support for Advanced Configuration and Power Interface
(ACPI) in the computer industry. The good news is that there are a few
things you can do to help improve your computer??™s support for APM and
ACPI, should you be experiencing any of these problems:
BIOS out of date. Check with the manufacturer of your computer system
or motherboard for a BIOS update. Vista requires that your BIOS comply
with the ACPI 2.0 specification.
ACPI/APIC not enabled in BIOS. Enter your BIOS setup screen, as
described in Appendix A, and make sure the ACPI APIC support setting
is set to On or Enabled. If you see a setting referring to ACPI 2.0 or
some later version, try turning it on if it??™s off, or vice versa. Reboot your
PC when you??™re done. Depending on how ACPI-compliant your PC is,
it may take some trial and error to get Vista to sleep properly.
Hybrid sleep not working. The second most common cause of sleep and
hibernation problems, behind an out-of-date BIOS, is a video card (display
adapter) driver that doesn??™t support Vista??™s Hybrid Sleep feature.
Check with the manufacturer of your video card for a newer driver, or
try turning off Hybrid Sleep, as described in ???The solicitude of Sleep,???
earlier in this section.
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