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Re: iBook G3 owners

On Wed, 2005-04-06 at 19:41 +1000, Ian Wienand wrote:
> On Wed, Apr 06, 2005 at 09:28:08AM +1000, Benjamin Herrenschmidt wrote:
> > Ok, can you try this please: After you have applied my patches, edit the
> > file arch/ppc/platforms/pmac_cache.S, and spot those 2 bits of code:
> On my 700Mhz 750FX iBook, with 2.6.12-rc2 and your patches from the
> website I require those extra changes to make it work.  Without them,
> the iBook goes to sleep OK, but doesn't seem to wake up (this has been
> a problem since somewhere just after 2.6.10 IIRC).

Cool ! Can you tell me the revision (PVR value) of the CPU ? It's all
in /proc/cpuinfo

> X works OK, and the iBook sleeps OK in X (Radeon Mobility M6) but when
> it wakes up the screen is very strange to start with; you can see
> "echos" of the terminal up the top half of the screen and the
> background seems dithered ... then it slowly seems to add bring back
> the colours over a one-two seconds till it comes back to life.  It's a
> very strange effect that I've never seen before.
> The CPU speed seems to work fine, and it sleeps and wakes in both
> 700Mhz and 400Mhz mode.

Ok. I suspect the wakeup effect might be caused by the delays in
radeonfb that I added to work around some chip errata... You can try
hacking them out from the errata function in radeonfb.h 


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