Re: Power Management Update

[CaT <cat@zip.com.au>]

On Tue, Sep 09, 2003 at 05:38:53PM -0700, Patrick Mochel wrote:
> A patch against 2.6.0-test5 can be found at 
> 
> 	http://developer.osdl.org/~mochel/patches/test5-pm1/test5-pm1.diff.bz2
> 
> The patches for each individual changeset can be found in that directory. 

Here's my experience with the patch for the various suspend levels (all
activated through /sys/power/state). It looks like there are problems
activating the resume code.

standby:

never turns off screen. just seems to hang after hwsleep-0257. power light
flashes. hitting power button causes power light to stop flashing but no
resume happens. system is hung and powercycle req.

serial console output:

Stopping tasks: ===================================|
hda: start_power_step(step: 0)
hda: start_power_step(step: 1)
hda: complete_power_step(step: 1, stat: 50, err: 0)
hda: completing PM request, suspend
PM: Entering state.
 hwsleep-0257 [15] acpi_enter_sleep_state: Entering sleep state [S1]

mem:

does stopping tasks and laptop powers down. power light flashes as if in
suspend.

serial console output:

Stopping tasks: =================================|

hand typed continued console out:

hda: start_power_step(step: 0)
hda: start_power_step(step: 1)
hda: complete_power_step(step: 1, stat: 50, err: 0)
hda: completing PM request, suspend
PM: Entering state.
 hwsleep-0257 [15] acpi_enter_sleep_state: Entering sleep state [S3]

On resume it is as for standby.

disk (firmware):
activates h/w suspend just fine. bios appears to resume properly (all progress
meters hit 100%) but it never seems to pass control back to the OS (or, at
least, the OS never completes the resume as per above situations)

serial console output:

Stopping tasks: =================================|
Freeing memory: ....................|
hda: start_power_step(step: 0)
hda: start_power_step(step: 1)
hda: complete_power_step(step: 1, stat: 50, err: 0)
hda: completing PM request, suspend
PM: Attempting to suspend to disk.

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