Passing acpi parameters in Lilo.

Arcosanti · 08-07-2012, 12:07 AM

Is it possible to pass this in Lilo, acpi_os_name="Windows 2001"? If so how can it be added to the lilo.conf file?

Didier Spaier · 08-07-2012, 12:22 AM

You can do it either at boot time or in lilo.conf.

At boot time: when lilo's greeting screen shows, hit "Tab" then type the whole lilo command beginning with the label of the kernel you want to run, followed by the kernel parameters, then hit "Enter". For instance you could type this:

Code:

Linux acpi_os_name="Windows 2001"

To make this setting permanent, add an append="<kernel parameters>" line to the relevant image section of /etc/lilo.conf. For instance:

Code:

image = /boot/vmlinuz
  root = /dev/sda3
  label = Linux
  initrd = /boot/initrd.gz
  append = "acpi_os_name='Windows 2001'"
  read-only

Of course don't forget to run "lilo -t -v" after that, then "lilo" if all goes well.

I'm not sure about quoting of kernel parameters values though, as I usually append kernel parameters whose values don't include whitespaces. Just try.

Arcosanti · 08-07-2012, 02:30 AM

Thanks for the reply. Unfortunately what I was hoping to accomplish did not work. Back to the drawing board I guess. I was hoping that my bios' DSDT was looking for that string for Windows XP so I could make Linux look like XP at boot time in order to get access to the full acpi functions. At the moment I only have partial access to acpi. Suspend/Hibernate works fine but I can't get acpi-cpufreq to work for processor scaling. For now I am using a custom version of speedstep-centrino for that. I am really wanting to fix the problem with acpi-cpufreq though so I can have an easy way to undervolt my processor. It's starting to look like I'll have to do the DSDT patch after all.