On Mon, 19 Aug 2002 11:08:42 +0300, Erez Doron wrote: > windows XP supports hibernation out of the box, with no need for support > on the laptop > what about linux ?
There are two different modes of ``hibernation'': suspend-to-RAM, in which the machine powers down, except for the RAM which keeps being powered, and suspend-to-disk, in which the content of the memory is dumped to the hard drive, and restored on the next boot. There are patches implementing the latter (without the need for BIOS support, even), but, in order for it to shutdown and resume propely, it must know which device is connected to which: otherwise, it may shutdown the IDE controller before the HD, for example, resulting in data loss. Thus, for successful operation, they need some structures and calls only available in the 2.5 series. If you do feel adventrous, download the latest 2.5 kernel, and enable ACPI (which will allow you to suspend-to-ram, and utilize the processor C-states for reduced power consumption) and software suspend (which will allow suspend to disk). Otherwise, you may try patching a 2.4 kernel, but resuming from suspends will sometimes won't work. But if you must, get the software suspend patch from <http://falcon.sch.bme.hu/~seasons/linux/swsusp.html>, and the ACPI patch from <http://www.sf.net/projects/acpi>. Shay. ================================================================= To unsubscribe, send mail to [EMAIL PROTECTED] with the word "unsubscribe" in the message body, e.g., run the command echo unsubscribe | mail [EMAIL PROTECTED]
