[ltp] Success w/ kernel 2.6+ACPI and swsusp hibernation on t41 (no-X)

Rob Browning linux-thinkpad@linux-thinkpad.org
Thu, 04 Dec 2003 11:03:51 -0600

Rob Browning <rlb@defaultvalue.org> writes:

> I decided to try kernel 2.6 (test11), ACPI, and swsusp hibernation
> in addition to my earlier test with 2.4.22 and PhoenixBIOS suspend,
> and I was surposed to find that it seems to work.  "echo 4 >
> /proc/acpi/sleep" puts the machine into hibernation, and if you have
> the right "resume=/dev/WHATEVER" kernel argument set up in grub (or
> whatever you boot with) the machine will pick up where it left off
> when you power it back up.

One further bit, "echo 3 > /proc/acpi/sleep" appears to engage the S3
"suspend to RAM" operation, and pressing the power button does wake
the machine back up immediately (it starts responding to pings again
and you can ssh in), but for some reason the screen doesn't come back
up, so the machine looks like it hasn't resumed.

Hope this helps.
Rob Browning
rlb @defaultvalue.org and @debian.org; previously @cs.utexas.edu
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