instructions:
-------------

- get dsdt:
  cat /proc/acpi/dsdt > dsdt.dat
- disassemble dsdt.dat using iasl:
  iasl -d dsdt.dat
- fix dsdt.dsl and reassemble it:
  iasl -tc dsdt.dsl
- copy dsdt.hex:
  cp dsdt.hex  /usr/src/linux/include/acpi/my_dsdt.h
- apply osl_c.patch:
  cd /usr/src/linux
  patch -Nfp0 < osl_c.patch
- rebuild your kernel and run lilo ...

good luck, for me (acer travelmate 220) nothing changed ;)

- hackbard