So, this didn't work either, so I went back and did an unrestricted
bisect across the entire rc1 to rc2 span.  It resulted in:

k...@tyler:~/lp597075/bisect/linux-2.6$ git bisect start v2.6.35-rc2 v2.6.35-rc1
Bisecting: 373 revisions left to test after this (roughly 9 steps)
[b1413357d924792e2e332dcb6b712a7fb2a5fb25] fbdev: fix frame buffer devices menu
k...@tyler:~/lp597075/bisect/linux-2.6$ git bisect bad
Bisecting: 179 revisions left to test after this (roughly 8 steps)
[aef4b9aaae1decc775778903922bd0075cce7a88] Merge branch 'next' of 
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc
k...@tyler:~/lp597075/bisect/linux-2.6$ git bisect bad
Bisecting: 111 revisions left to test after this (roughly 7 steps)
[64ffc9ff424c65adcffe7d590018cc75e2d5d42a] kbuild: Revert part of e8d400a to res
k...@tyler:~/lp597075/bisect/linux-2.6$ git bisect good
Bisecting: 63 revisions left to test after this (roughly 6 steps)
[08a66859e69264f3223560d06b88e80c1a6a6387] FS-Cache: Remove unneeded null checks
k...@tyler:~/lp597075/bisect/linux-2.6$ git bisect good
Bisecting: 31 revisions left to test after this (roughly 5 steps)
[85cd4612fdab4e837d7eea048a697c75d0477d3b] drm/i915: Check error code whilst 
moving buffer to GTT domain.
k...@tyler:~/lp597075/bisect/linux-2.6$ git bisect bad
Bisecting: 15 revisions left to test after this (roughly 4 steps)
[9962c9252e46eda7058067cbe73bdf1ed74b0d37] drm/i915/dp: Only enable enhanced 
framing if the sink supports it
k...@tyler:~/lp597075/bisect/linux-2.6$ git bisect bad
Bisecting: 7 revisions left to test after this (roughly 3 steps)
[f41275e893191eeb7a88e431d594e167adbd5234] drm/i915: Convert more trace events 
to DEFINE_EVENT
k...@tyler:~/lp597075/bisect/linux-2.6$ git bisect good
Bisecting: 3 revisions left to test after this (roughly 2 steps)
[7648fa99eb77a2e1a90b7beaa420e07d819b9c11] drm/i915: add power monitoring 
support
k...@tyler:~/lp597075/bisect/linux-2.6$ git bisect good
Bisecting: 1 revision left to test after this (roughly 1 step)
[f1befe71fa7a79ab733011b045639d8d809924ad] agp/intel: Restrict GTT mapping to 
valid range on i915 and i945
k...@tyler:~/lp597075/bisect/linux-2.6$ git bisect bad
Bisecting: 0 revisions left to test after this (roughly 0 steps)
[9a7e8492d17394a81d5534abf90b5b2ada7ea3c0] drm/i915: Storage class should be 
before const qualifier
k...@tyler:~/lp597075/bisect/linux-2.6$ git bisect good
f1befe71fa7a79ab733011b045639d8d809924ad is the first bad commit
commit f1befe71fa7a79ab733011b045639d8d809924ad
Author: Chris Wilson <ch...@chris-wilson.co.uk>
Date:   Tue May 18 12:24:51 2010 +0100  

    agp/intel: Restrict GTT mapping to valid range on i915 and i945

    References:

      Bug 15733 - Crash when accessing nonexistent GTT entries in i915
      https://bugzilla.kernel.org/show_bug.cgi?id=15733

    On G33 and above, the size of the GTT space is determined by the GMCH
    control register. Prior to this revision, the size is determined by the
    size of the aperture. So we must careful to map and fill the appropriate
    range depending on chipset.

    Signed-off-by: Chris Wilson <ch...@chris-wilson.co.uk>
    Signed-off-by: Eric Anholt <e...@anholt.net>

:040000 040000 a640ccd942bab2077babf162ec79cfa9dfb166c3
8472a2b84c676e3c714e8c1f8392255b1959ae83 M      drivers

Building -6 maverick kernel with this reverted to test now.

** Bug watch added: Linux Kernel Bug Tracker #15733
   http://bugzilla.kernel.org/show_bug.cgi?id=15733

-- 
2.6.35 hangs at boot due to regression in i915 or intel_agp
https://bugs.launchpad.net/bugs/597075
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