Hello, I installed RedHat 9 on a Toshiba Satellite 5105-S501 laptop.
I'd like to use KLaptop since I'm on a laptop but it says

"Your computer doesn't have the Linux APM (Advanced Power Management) or ACPI software installed, or doesn't have the APM kernel drivers installed - check out the Linux Laptop-HOWTO document for information on how to install APM."

I googled about it all day long but I couldn't find much.
I found about APCI4Linux but I don't know if it's the thing I need.

Even if it's the thing I need, I do not understand how to install diff.gz files.
In another thread, I read that it's to patch something but since I'm such a newbie, I do not understand what it means.

Does anybody know a idiot's guide to enebling ACPI?
I'll really appreciate it if someone can tell me how I can use ACPI features on my laptop.

I downloaded this kernel

ftp://ftp.kernel.org/pub/linux/kerne...2.4.20.tar.bz2

I downloaded this patch

http://unc.dl.sourceforge.net/source...2.4.20.diff.gz

I downloaded this

http://easynews.dl.sourceforge.net/s...3-04-03.tar.gz


you will need to unpack the kernel source to /usr/src/linux

cd /usr/src/linux
make mrproper
gunzip -c /path/to/acpi-20021212-2.4.20.diff.gz | patch -p1

unpack the omnibook file and cd into it's folder

I ran the kpatch file

./kpatch

you can also build the modules if you want


configure your kernel for your machine.

loading the current config before doing anything else may be a good idea if you don't know what the config settings are

then build the kernel and you will see ACPI in the general section of the config enable it and enable the sub items or set them to M for modules


you will see HP laptop support

build it as a module

You should also build the Toshiba laptop module support for your machine

I'm not sure if your laptop is supported by the omnibook driver or not, you will need to try it


read the docs in the acpi and omnibook folders

You can get other patches for acpi if the kernel you are going to use is not the 2.4.20 you need to get the matching patch

Or you might try to run these commands and see what happens


modprobe toshiba
modprobe acpi


/etc/rc.d/init.d/acpid start

Thank you very much for detailed replies, David.

I have one question before doing what you said.
I see a folder named "linux-2.4.20-9" in /usr/src.
I still have to download 2.4.20 kernel and unpack it at /usr/src/linux, am I right?

you can try to see if the kernel has acpi and toshiba support first if you want.


cd /usr/src/linux-2.4
make menuconfig

look in General for ACPI and see if it has components like battery, cpu, thermal, etc

also look in the kernel section and see if toshiba module is enabled.

you can also try to patch the source you have with the omnibook and acpi patches if you want to try it.

I would make a copy to work with until you are sure it works

cd /linux-2.4; tar -c . | (mkdir /usr/src/linux; cd /usr/src/linux; tar -x)
cd /usr/src/linux
make menuconfig

I just installed RH 9 on my laptop

the kernel has the acpi patch but it is disabled by default so a rebuild is required

the toshiba module is already built in

most likely you can do modprobe toshiba

and also build the omnibook driver and load it without a kernel rebuild, the onetouch keys will work as well as media keys without acpi

on my hp the power button and brightness controls will not work without acpi

I am rebuilding the RH kernel 2.4.20-9 to see how it works out.

I might end up just using my 2.4.20 patched kernel that I am using for Slackware

Thank you for your replies again.
I did

cd /usr/src/linux-2.4.20-9
make menuconfig

Then something like BIOS came up and even though I couldn't find Kernel (Only Kernel Hacking is there), I found Toshiba Laptop support in Processor type and features.

Here's my current Configuration of Processor type and features.
And this is Configuration of General setup (ACPI support part only)
I don't understand what those things tell or what I can do with them.
Should I modify it and Save Configuration to an Alternate File?
I'm sorry I'm such a

When I did "modprobe toshiba", nothing happened.
modprobe acpi & /etc/rc.d/init.d/acpid start did not work.

acpi will need to be enabled, this will require you to rebuild the kernel

I have not determined if it will work with the current acpi patch or not

You will also need to install acpid

see the kernel howto

after you exit make menuconfig

you run this

make dep clean bzImage modules modules_install install

your new kernel will be 2.4.20-9custom

select it when you get the boot menu

it appears that the acpi included with the redhat kernel is not complete.

the links above will get you toshiba laptop extras in the acpi section. I'm not sure what that will get you but I do know that I can't get my hp to work with the redhat kernel. brightness controls and the power button will not work.

I am going to use the 2.4.20 kernel with the patches, everything works on my machine with it.

I installed the ACPI patch and Omnibook file.
I modprobed those three and got this result.

When I rebooted, I didn't see 2.4.20-9custom.
I tried to install acpid but in the README says "Verify ACPI is loaded by verifying the existence of /proc/acpi/event." and I don't have "acpi" folder in proc.

Is this problem fixable or am I totally screwed?

Your ok, don't worry


did the kernel build fail or something?

if this command failed

make dep clean bzImage modules modules_install install

we will need to see where it stopped and with what error



do you have a folder called /lib/modules/2.4.20-9custom

if not then building of modules failed

if there is no file in /usr/src/linux/arch/i386/boot/ named bzImage then the kernel did not build successfully or maybe install failed do to a lilo.conf problem

either way there should have been errors


please post the errors

kernel building errors is mostly always due to a configuration problem in the config file which can be corrected in menuconfig

follow these steps on the patched kernel source each time you build it...

the patch having no errors assumed..

cd /usr/src/linux

make distclean mrproper menuconfig

now load the config from file /boot/config-2.4.20-9 or whereever it is, or if you have not established a good config file for the system just go from the default and carefully enable only what you need. This process can take a few trial runs before everything clicks.

save your config file as you continue to make progress and reload them into the clean source each time you attempt to rebuild it.

after exiting menuconfig use this again..

make dep clean bzImage modules modules_install install


if it fails somewhere other than install, work on the menuconfig some more and try again until it works

if make install fails post the error

you can manually install the kernel if you have a sucessful make bzImage modules modules_install

Yes, I think the kernel build failed.
I think I typed bzLmage instead of bzimage (I typed L in lower case ).
I'll try it again and post an error message if it comes up.

Should I install the patch and Omnibook file again and go through these steps again?

Btw, I use GRUB, not LILO.