Bug#470491: linux-image-2.6.24-1-686: Please enable hpet=force by default
Package: linux-image-2.6.24-1-686
Version: 2.6.24-4
Severity: wishlist
Current Linux includes support for force-enabling the High Performance
Event Timer (HPET) on chipsets which do not advertise it in
documentation or which disable it in BIOS, such as the ICH4 chipset
used on many laptops. Using the HPET can significantly reduce power
usage, in combination with nohz and C-states.
However, Linux will only force-enable the HPET if the kernel command
line includes hpet=force. Please consider enabling hpet=force by
default, so that a default installation saves the extra power without
needing to edit bootloader configuration. All information I have seen
on this option via LKML suggests that it only exists because
force-enabling the HPET on many chipsets involves undocumented
operations; however, as far as I can tell, force-enabling the HPET
only happens on a whitelist of chipsets known to work.
Thanks,
Josh Triplett
-- System Information:
Debian Release: lenny/sid
APT prefers unstable
APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.6.24-1-686 (SMP w/1 CPU core)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash
Versions of packages linux-image-2.6.24-1-686 depends on:
ii debconf [debconf-2.0] 1.5.19 Debian configuration management sy
ii initramfs-tools [linux-initr 0.91e tools for generating an initramfs
ii module-init-tools 3.3-pre11-4 tools for managing Linux kernel mo
Versions of packages linux-image-2.6.24-1-686 recommends:
ii libc6-i686 2.7-9 GNU C Library: Shared libraries [i
-- debconf information excluded
Reply to: