"WANG" == WANG Xiaolin <ad50126035@online.sh.cn> writes: WANG> I've already included the APM module when compiling the WANG> kernel. And also have the apmd started. Is there anything WANG> else I have to take care? I've heard that you can't turn on CONFIG_ACPI along with CONFIG_APM. Perhaps you did that (the quoted configs in your post were missing CONFIG_ACPI). I'm presuming that this machine does halt with a 2.2. kernel? Cheers! Shyamal