Hi,
I like to integrate a post-install script that modifies/adopts configuration
variables according to:
1) powersave version (for updates)
2) kernel version
3) machine specific configurations
after installation.
*1) Powersave Version*
This is mainly the stuff already located in the rpm post-install section.
Maybe we can throw out the 0.7->0.8 version update stuff.
*2) Kernel Version*
- Switch to userspace governor on specific machines for specific kernels
e.g. speedstep-ich and SMP machines currently do not work with the ondemand
governor. Check for needed CPU freq module, SMP machine and kernel version
and set the config variable accordingly.
- Possibly disable suspend to disk for SMP machines for kernels that we know
that do not work -> Difficult, people might update the kernel, but not the
powersave daemon. Still it might be a good idea to prevent data loss. The
user can still enable it by hand.
*3) Machine Specific Configurations*
- Possibly add suspend to ram hooks for specific kernels/graphics cards,
Seife?
- Add thermal trip point default values exported from BIOS to config files
- Check for appropriate CPU freq module and add it to CPUFREQD_MODULE=""
- Check for all ACPI modules that need to be loaded on that machine and add
them to ACPI_MODULES="" (This also includes the laptop specific ones).
I'd like to have the loading of ACPI modules at one central place. Were
there any reasons not to do so? Whatabout hal, it is started after the
powersaved daemon, but seems to be able to handle the late loading of the
ACPI modules?
- Disable throttling for all SMP machines and machines that support C2 and
higher states (According to Intel throttling consumes more power than doing
the tasks quickly and then go to C-states in idle).
- Add a switch_vt hook for ppc on suspend to disk (not sure whether this is
still necessary for their graphics card drivers).
Probably more will come up, these are the ones I collected so far, any ideas
welcome...
Thomas
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