lkml.org 
[lkml]   [2008]   [Feb]   [20]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
SubjectRe: [BUG?] APM is hidden in menuconfig
Date
On Wednesday, 20 of February 2008, Jarek Poplawski wrote:
> Hi,
>
> I needed APM to have poweroff on old box. So, in 2.6.24.2 menuconfig:
>
> 1) Power management options -->
> No APM.
> 2) [*] Power Management support
> No APM. I can see ACPI...
> 3) I try searching with "/" + "APM"
> APM [=n]
> Depends on: !X86_VOYAGER && X86_32 && PM_SLEEP && !X86_VISWS
> 4) I check above: all correct except:
> Symbol: PM_SLEEP [=n]
> No more "depends on".
> 5) Exit menuconfig - enter grep:
> 6) Some time wasting in arch/.
> 7) less kernel/power/Kconfig:
> config PM_SLEEP
> bool
> depends on SUSPEND || HIBERNATION
> default y
> ...
> config SUSPEND
> bool "Suspend to RAM and standby"
> depends on PM
> depends on SUSPEND_UP_POSSIBLE || SUSPEND_SMP_POSSIBLE
> default y
> ---help---
> Allow the system to enter sleep states in which main memory is
> powered and thus its contents are preserved, such as the
> suspend-to-RAM state (i.e. the ACPI S3 state).
>
> 8) Back to menuconfig:
> [*] Suspend to RAM and standby
>
> Bingo! APM revealed! (And not even "DEPRECATED"!)
>
> So, has it to be so hard? It seems not - at least in good old times...

Something in APM uses some code from drivers/base/power/main.c that depends
on PM_SLEEP.

Thanks,
Rafael


\
 
 \ /
  Last update: 2008-02-21 01:27    [W:0.046 / U:0.076 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site