Re: [gentoo-user] Kernel upgrade problem

[Dirk Heinrichs]

Am Dienstag, 4. November 2008 20:51:10 schrieb David Relson:

> Due to problems experienced with 2.6.25-gentoo-r7, I've built
> 2.6.27-gentoo-r2.  I started with the 2.6.25-r7 .config file, ran
> "make oldconfig", then "genkernel all".

Don't know if that helps, but anyway, here's what I usually do:

I only use kernel.org kernels (vanilla-sources in Gentoo). They're the same no 
matter the distro.

I have a copy of my kernel config (in /etc/kernel/config). If you configured 
your kernel appropriately, you can also find the config of the running kernel 
in /proc/config(.gz). Upon a major kernel upgrade, I run make menuconfig, load 
my old config file and check all the important options, eventually switching 
on/off new options which I find useful.

I never ever ran make oldconfig. I also never ran genkernel. Why should I? 
After leaving menuconfig it's just make, make modules_install, make install 
(or copy the appropriate kernel file to /boot manually).

Then I run a self-written script which updates some symlinks in /boot (so that 
I don't need to edit grub.conf) and cleans /lib/modules, leaving only the 
currently running kernel and the new one arround, together with their modules.

I didn't have a kernel related boot problem since a very long time now. But 
even if I had, I still have the old one.

> The new 2.6.27 kernel appears
> to load modules OK, then hangs. The old 2.6.25-r7 kernel displays
> "Activating mdev" after it finishes loading modules.

Don't know what mdev is (or is this a typo: udev), so I can't help with this.

> Any suggestions of what to check for or change?

Try to diff both kernel configs. Look wether there's something missing in the 
new one that was there in the old. Maybe try again with the method described 
above.

BTW: I'm running 2.6.27.4 w/o any problem.

Bye...

	Dirk