Re: powerbook 12 freezes on "MMU:EXIT, setup"

[Emmanuel Galatoulas <galas@tee.gr>]

Triverio M. wrote:

> Hey guys, thank you so much for your answers.
>
> Unfortunately I cannot test kernel 2.6.15-rc6 or rc7 since I don't 
> have a broadband connection to the internet and can't download big 
> files (it's 47,2 MB, too much for my 56k connection).
> I should have it downloaded from a friend in a week or two.
>
> I have tried booting from the Testing Etch (kernel 2.6.12) with 
> "install video=ofonly" and with "install video=nvidiafb:off" but it 
> did not make the trick.
> I'll try "install video=offb" and tell you guys.
>
> Thanks so much!
This does not come as a surprise
simply because the problem does not have to do with the framebuffer
or something like that
but with a really crazy "bug" in the kernel !!!

Guy Yusko had forwarded in a previous thread on the same issue
the following solution suggested by BenH (Herrenschmidt)

===========================
COMMENT OUT THE FOLLOWING LINE:
pmac_tweak_clock_spreading(1);

in arch/ppc/platforms/pmac_feature.c
===========================

I am just trying to compile now a 2.6.15 kernel to check if this is 
still necessary (it was as far as I can tell
for my 2.6.15-rc7 kernel!)
but now I have stuck in a different obstacle:

arch/ppc/kernel/time.c: In function ‘wakeup_decrementer’:
arch/ppc/kernel/time.c:125: warning: implicit declaration of function 
‘last_jiffy_stamp’
arch/ppc/kernel/time.c:125: error: invalid lvalue in assignment
arch/ppc/kernel/time.c: In function ‘timer_interrupt’:
arch/ppc/kernel/time.c:189: error: invalid lvalue in assignment
arch/ppc/kernel/time.c: In function ‘time_init’:
arch/ppc/kernel/time.c:331: error: invalid lvalue in assignment
make[2]: *** [arch/ppc/kernel/time.o] Error 1
make[1]: *** [arch/ppc/kernel] Error 2
make[1]: Leaving directory `/usr/src/linux-2.6.15'

any ideas about that????

Happy New Year to all

(PS. this is to Sven Luther, in particular: will it be possible to get 
rid of this
peculiar PowerBook bug in mainstream kernel-builds so that we could be able
to test the latest builds of the installer ?)

Emmanuel Galatoulas