(solved) unable to override acpi method

[random183]

My HP ProBook 4720s has broken ACPI tables. The faand fixed a me is not running. i have decompiled the tables and fixed a method, following instructions on this page:
https://www.kernel.org/doc/Documentatio ... mizing.txt.

When I try to override the old method with "sudo cat /tmp/psr.aml > /sys/kernel/debug/acpi/custom_method" i get a "Permission denied" error. How can i fix this?

[DrHu]

There are a lot of steps to your procedure, mostly with Chinese programmers
--I did locate setting it via initrd, but can't find it again..

acpi + dsdt (tables)
http://powersave.sourceforge.net/powersave/DSDT.html

Maybe the kernel options have changes since 2x versions
http://www.scribd.com/doc/226940265/Lin ... the-Series

• NOTE: For the kernel to have a particular feature, the hardware, BIOS, and firmware must support the feature in question. Some systems have a BIOS that does not control the hardware much. This type of BIOS will not restrict features often. If the kernel does have a particular feature, the hardware must have the ability to complete such a task

--reading if you need top check kernel choices/options: search on acpi inside that document or actually download it if you have facebook or make an account with this publisher's web site..

Linux all distributions are now at 3x kernels..