Indeed it seems this is only enabled in Lucid for powerpc-smp:
ogasaw...@emiko:~/ubuntu-lucid/debian.master/config$ grep -rn "CONFIG_PCIEASPM"
*
config.common.ports:2325:# CONFIG_PCIEASPM_DEBUG is not set
config.common.ubuntu:2793:# CONFIG_PCIEASPM is not set
ia64/config.common.ia64:162:# CONFIG_PCIEASPM is not set
powerpc/config.flavour.powerpc:30:# CONFIG_PCIEASPM is not set
powerpc/config.flavour.powerpc-smp:31:CONFIG_PCIEASPM=y
powerpc/config.flavour.powerpc64-smp:31:# CONFIG_PCIEASPM is not set
However, examining this config option a bit closer it seems this is
noted as being experimental. We typically don't enable experimental
options. I'll try to raise this for discussion to get additional input.
Thanks.
config PCIEASPM
bool "PCI Express ASPM support(Experimental)"
depends on PCI && EXPERIMENTAL && PCIEPORTBUS
default n
help
This enables PCI Express ASPM (Active State Power Management) and
Clock Power Management. ASPM supports state L0/L0s/L1.
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: New => Triaged
** Tags added: kconfig
--
[Karmic]Please enable PCI express ASPM (powersave)
https://bugs.launchpad.net/bugs/333990
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