Difference between revisions of "System wakeup"
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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. | ||
| + | {{Tip box|Most newer machines should work correctly with ACPI Wakeup and you should probably try that method first.}} | ||
| + | |||
==ACPI Wakeup== | ==ACPI Wakeup== | ||
This uses the system's ACPI subsystem and requires the presence of /proc/acpi/alarm or /sys/class/rtc/rtc0/wakealarm. | This uses the system's ACPI subsystem and requires the presence of /proc/acpi/alarm or /sys/class/rtc/rtc0/wakealarm. | ||
Revision as of 11:57, 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.
Tip: Most newer machines should work correctly with ACPI Wakeup and you should probably try that method first.
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.
