http://bugzilla.kernel.org/show_bug.cgi?id=12861





------- Comment #19 from se...@hallyn.com  2009-03-17 08:34 -------
(In reply to comment #4)
> Bug is still present in 2.6.29-rc8
> 
> I can actually get X to start if I set i915.modeset=1, but not in a useable
> state (no cursor and no keyboard)
> 
> I did explicitly confirm bisect, on second run oldconfig asked about dma
> remapping (set to N)
> 
> kant ~ # diff -u /boot/config /boot/config.old
> -# CONFIG_DMAR_DEFAULT_ON is not set
> 
> With 99cbb86180bccd77f331f6e8eb7ce26aeea2cb72 I got normal operation, the 
> other
> reproduces the bug.
> 
>   491  git checkout 99cbb86180bccd77f331f6e8eb7ce26aeea2cb72

Wait, what is this one?

Was this one successfull?  BC this commit is from Mar 13 and is actually
not applied in Linus' main branch (IIUC).

>   492  cp /boot/config-2.6.29-rc4 .config
>   493  make oldconfig
>   494  make -j3 all && make install modules_install && make clean mrproper &&
> init 6
>   495  cd /usr/src/linux-2.6
>   496  git checkout fb5ae64fdde29236e1a15e0366946df7060f41f2

You also didn't copy /boot/config-2.6.29-rc4 .config between the two builds. 
Which could be a problem precisely because the first tree you compiled was a
month newer than the second one.

So I think you want to try the following to really confirm whether X starts
failing at the commit being blamed:

make clean && make distclean &&  make mrproper && clean this bad boy out
ferreal

git checkout 1d7b33f77b2d8b0b1ee767e6f8f05cbd9d72cb7c
cp /boot/config-2.6.29-rc4 .config
make oldconfig && make -j3 all && make install modules_install && init 6
[ confirm that X works ]

git checkout fb5ae64fdde29236e1a15e0366946df7060f41f2
cp /boot/config-2.6.29-rc4 .config
make oldconfig && make -j3 all && make install modules_install && init 6
[ confirm that X does not work ]


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