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Re: Bug#296960: pmac G4 AGP 350MHz Install Report



On Sat, Feb 26, 2005 at 10:28:49AM -0600, Jeffrey B. Green wrote:
> 
> 
> Sven Luther wrote:
> >On Sat, Feb 26, 2005 at 07:00:34AM -0600, Jeff Green wrote:
> >
> 	[...snip...]
> >
> >So provided your wacom tablet is indeed the usb one, try :
> >
> >  modprobe wacom
> 
> 	Got 2.6.8 to run, see bottom. Yes indeedy. It now shows, did a lsmod 
> before and after, excellent. Thankyouthankyouthankyou.

Hehe. Notice that you could edit /etc/mkinitrd/mkinitrd.conf and change
MODULES=most to MODULES=dep there, in order to have a much smaller initrd
(1.5MB instead of 4 or more). Will quicken your boot time i believe.

> >
> >mount -t cramfs /boot/initrd.img-2.6.(8|10)-powerpc /mnt
> >find /mnt >>file_for_sven
> 
> 	Just for completeness, did it, attached (file_for_sven_initrd). 
> 	Note: need -o loop. Interesting. I took a peek at the discussion that I 

Yep, indeed, sorry to have forgotten it.

> believe you and Senior Hess were having, which kind of gets my curiosity 
> in what this initrd does for you (me?). What are the basic pros and cons 
> for using a initrd?

Well, the idea is to build as much as possible as module, to have the leanest
kernel possible. There is still place for some cleanup, but basically we have
achieved the point where the same kernel can be used on all powerpc machines
(from oldworld to G4 powermacs, passing by a bunch of prep and chrp boxes),
and at the same time fits on a miboot floppy for oldworld. The compressed
kernel is around 1.1MB i think.

The counterpart of this is that the many things are built as modules,
including all filesystem drivers, and the ide/scsi drivers (except the
pmac_ide you need, which is not yet modularizable, so ...). We need an initrd
to boot into, inspect the hardware some, and load the necessary modules to
access the root filesystem, and then takeover it and do the normal boot.

This seemed overkill for me too at first, but over the almost a year of
handling 2.6 powerpc kernel i have come to really appreciate it.

> >Ok, so please fix your (hand-crafted) yaboot.conf, and try again, my guess 
> >is
> >that things will immediately get fixed from there.
> >
> 
> 	It worked. I must have not done "something" right in all of the 
> 	install confusion with the hangs and overwriting the boot partition. Thanks 
> much. I will try out your 2.6.10-3-powerpc kernel, but for right now I 
> do have to step away from the machine for a bit.

Ok. So, case solved, we can close this bug report, and you should open another
one against the xserver-xfree86 if you still have troubles with it.

> thanks again and keep up the good work,

Hehe.

Friendly,

Sven Luther



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