allen wayne best just ramblin in his amx wrote: > i am trying to understand which option(s) to select (or deselect) when i > build a new kernel (2.4.12) to have the system power off when i do a > "shutdown -h now". i have set the following with no luck: > > # General setup > > CONFIG_PM=y > CONFIG_APM=y > CONFIG_APM_REAL_MODE_POWER_OFF=y > CONFIG_APM_ALLOW_INTS=y > CONFIG_APM_RTC_IS_GMT=y
First, are you sure your PC supports APM and/or ACPI? Which one? Both? My machine powers off quite nicely with "shutdown -h now". I have CONFIG_PM and CONFIG_APM set, but not ...REAL_MODE_POWER_OFF or ...ALLOW_INTS. My machine probably supports ACPI too (it's a pretty recent machine), but I don't have CONFIG_ACPI set because APM seems to do just fine and I don't see a need to mess with it. CONFIG_APM_RTC_IS_GMT simply tells the kernel to consider your hardware real-time clock as a GMT value, rather than local time. I have that set too, but it has nothing to do with powering off. If you can't get APM to work and your machine supports ACPI, you could try setting CONFIG_ACPI. I forget whether that's still considered "experimental". > # Kernel hacking > > CONFIG_MAGIC_SYSRQ=y > CONFIG_KERNEL_DEBUG=y > CONFIG_DEBUG_IOVIRT=y These have nothing directly to do with power-off. If you don't know what the Magic SysRq key is, turn it off (or read it up on it and find out what it can do for you). Craig
