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Old 01-01-2004, 09:36 AM   #1
geyes30
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base kernel vs custom kernel with distros


HI. I am not sure if I have the terms right, but what are the differences between ´base´ kernels and custom ones? By ´base´ I am referring to those that are downloaded from Linux Kernel Archives while custom ones are those issued with the various distributions, like Mandrake (with mdk extension to kernel name). Paritcularly, I would like to know the difference between kernel 2.4.23 and 2.4.23.0.rc5.2mdk. Will there be any issues if I recompiled the base version and ran it with my Mandrake 9.2? Thanks.bas
 
Old 01-01-2004, 09:46 AM   #2
XavierP
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The customised kernels are customised by the distro makers. The kernels are specifically for Mandrake, Debian, whoever. The ones from LKA are 'pure' - they are the unmodified kernel and can be compiled specifically for your system (hardware).

You can use the base kernels on your system, but once you have done that you will not be able to upgrade some things (such as the kernel!) with urpmi or other mandrake package managers. Equally, since Mandrake test their kernels with their software lists, you can be sure that things are unlikely to break. If you compile your own kernel, you may have to manually fix some problems.
 
Old 01-01-2004, 11:46 AM   #3
geyes30
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Thanks! That was informative and helpful. On a related note, the source file for 2.4.23 that I downloaded from Mandrake update sites cannot be installed, due to some bad signatures. I have tried to ignore the error but nothing happens after that. Any advice? By the way the message looks like this:

¨Invalid signature ((SHA1) DSA sha1 md5 (GPG) (MISSING KEY) GPG#26752624 NOT OK)¨

At the same time, Mandrake´s update managers seem to be unable to detect 2.4.23, but only lists 2.4.22 in the packages list. This is quite weird. Any explanations?
 
Old 01-01-2004, 11:55 AM   #4
XavierP
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The missing signature is a security measure. The GPG signature should also be installed on your pc and so your pc would know that it's a good file.

In /usr/linux/src or /usr/src/linux (I think it's the first one - what do you have installed?
 
Old 01-01-2004, 12:23 PM   #5
geyes30
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I have installed my updated source. Somehow, I couldn´t install by double-clicking, but was able to install it in the command line. Now /scripts/patch-kernel tells me I have 2.4.23, but uname -a tells me have 2.4.22. Is it because I have yet to compile it and started using the new kernel?
 
Old 01-01-2004, 12:33 PM   #6
XavierP
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Quite possibly. I have only ever updated the kernel by using up2date on RH, so I don't have the experience. When you boot into Linux, what kernel is shown in lilo/grub?
 
Old 01-01-2004, 12:35 PM   #7
geyes30
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2.4.22
 
Old 01-01-2004, 01:04 PM   #8
XavierP
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Did you update your bootloader to load the new kernel?
 
Old 01-02-2004, 10:49 AM   #9
geyes30
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No I did not update my bootloader. But I have to first recompile the kernel right? Also, will the packages I downloaded and installed disappear after I recompile the kernel? Sorry if this is all wrong. I am a 1-week old Linux user!
 
  


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