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Subject: Re: Linux 2.6.3-rc3
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
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> No, it does not work with the old driver. These are new PC's, never tried a 
> kernel older than 2.6.2. These are not yet really in 'production', so if 
> you want me to install an older kernel, no problem: Today if have no 
> problem with that.
> 
> If i enable VESA VGA, everything works. If i enable ATI Radeon (old or new) 
> the screen is blank, but the monitor shows valid freqencies. If i switch 
> to X, no problems, everything works as espected.
> 
> dmesg/config attached

It couldn't mmap the framebuffer, the problem is that you have run out
of kernel virtual space. I'll try to find a workaround, but in the
meantime, you need to change the lowmem/highmem ratio.

Ben.