Difference between revisions of "System wakeup"
From MythTV Official Wiki
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The BIOS on your computer’s motherboard will typically allow you to wake up your computer without additional hardware. More or less any modern machine should have a function for time-controlled booting. | The BIOS on your computer’s motherboard will typically allow you to wake up your computer without additional hardware. More or less any modern machine should have a function for time-controlled booting. | ||
There are two methods that can be used with MythTV to wakeup your computer. | There are two methods that can be used with MythTV to wakeup your computer. | ||
Revision as of 11:50, 4 September 2007
The BIOS on your computer’s motherboard will typically allow you to wake up your computer without additional hardware. More or less any modern machine should have a function for time-controlled booting.
There are two methods that can be used with MythTV to wakeup your computer.
ACPI Wakeup
This uses the system's ACPI subsystem and requires the presence of /proc/acpi/alarm or /sys/class/rtc/rtc0/wakealarm.
nvram-wakeup
This is a small program that reads and writes the WakeUp time in the BIOS. This is done via /dev/nvram on recent kernels (>2.4.6, including 2.6.x) or, alternatively, via direct ISA access. On this WakeUp time the computer is powered on automatically.
