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I am preparing to recompile my kernel to 2.4.20 to get ACPI support for my laptop. My question is "what is this patch I downloaded from kernel.org's main page? It's called patch-2.4.20.bz2. I also downloaded the actual kernel.
Can someone give me a little more information on the linuxquestions kernel I downloaded from sourceforge? What was removed for performance?
A kernel patch updates your kernel source tree to the current version. The whole kit-in-kaboodle, which is very large, simply overwrites the kernel source tree.
Before you try to update your Redhat kernel, think really hard. Redhat has a lot of complex driver support, and recompiling your kernel can cause you to lose some of this support (i.e. acceleration for your video card.) Also, Redhat has just released v9.0 (aka 8.1 - the non-beta of what you have now). The ISO's will be available for free download in about a week.
If you still need to recompile your kernel to get better hardware support, use Redhat's config. Copy the appropriate file from /usr/src/linux/configs to usr/src/linux and rename it ".config". Then, if upgrading the kernel, run "make oldconfig" or, if recompiling the current kernel with new options, run something like "make xconfig". Then, run "make dep". Before you run "make bzImage" and the like, edit /usr/src/Makefile to remove the "custom" tag from it (if the tag is there - it may not be). This way, Redhat will think the kernel is installed in RPM form - even if you compiled it (trust me, this is a good thing).
Thanks for the great replies. kc8tbe I will take your advise about the options, but I still need the newer support that the 2.4.20 kernel provides for laptops. If I lose anything critical during this process I will go back to my old trusty RH kernel and keep studying until I get this kernel stuff right.
Thanks for everything....
It has the 2.4.20 kernel. And once again they failed to include acpi support by default. Arrrg!! I still have to recompile. I got a 2.4.20 kernel that I compiled to boot, but with massive errors. I have now picked up the RPM versions of the kernel from Redhat (now that I am a subscriber Doh!) but can I add things like acpi to a RPM kernel?
Oh yeah, and my laptop uses a completely unsupported ATI mobility Radeon chip currently running the VESA (generic) driver so I already lack any cool features for my chipset.
You can still recompile 9.0's kernel as described above.
I don't know why you are using a VESA diver for a ati radeon mobility chip. The version of Xfree86 that comes with RH8.0.94 supports acceleration of the chip just fine. Please let me know what version of the chip you have and what version of Xfree86 you are running.
And if you don't want to subscribe to RH to get stuff, you can usually find it on LMule (emule for linux). RH makes 9.0 available publicly April 7.