Reboot and test

ACPI: Advanced Configuration and Power Interface
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# 13. Reboot and test

At this point you should reboot your machine. When your system comes back up (assuming of course that everything went well and you still have a system), check to see what kernel you're running with uname `-a`. It should show you the one you just built. You also need to make sure the correct patch was installed. You can do that with `dmesg | grep `ACPI.*Subsystem\ revision`` . It should give the output: `ACPI: Subsystem revision 20021212`. The revision is the date the patch was released. This number will be different than mine if you are not using the 2.4.20 kernel. To look at all ACPI-related bits that were loaded/started when your system rebooted, do this: `dmesg | grep `ACPI`` . dmesg prints your boot messages and grep `ACPI` makes sure that only ACPI-related messages are printed.

You can also check to see what version you're using with cat `/proc/acpi/info`. Don't believe everything you read though. My output says that S3 is a supported state, but we already know it's not. It does give the correct version though, which is useful.

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