Analysis and Solution for power failure in 2.4.18

Article Title: Analysis and Solution of power failure in 2.4.18. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
During work, I upgraded the linux kernel to 2.4.18. After making menuconfig configures all the parameters, restart the machine and run everything normally. however, when the shutdown operation was executed, it was found that after the machine shut down all services, it showed that the power was down, and then there was no static activity, and the power was not turned off!

Re-enter menuconfig and repeatedly test the various combinations of PM and APM (in general setup.

It was very interesting to look for an answer from yahoo. A netizen said: this problem won't work in his repeated tests, but I don't know why RedHat 7.3 (2.4.18) can power off the power. Is it a trade secret?

Patiently search and finally find the answer. In the past, APM was considered insecure in the SMP environment. If you select SMP, even if you select APM, the APM will be automatically disable during the runtime. So it should be like this:

Make menuconfig

In general setup, select PM, APM, and RTC to GMT in APM.

Remove SMP support from Processor.

After compilation, restart. Shutdown again to shut down, you can finally hear "click", shut down the power!