[Bug 80010] [965gm bisected regression] screen black when starting X

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=80010

--- Comment #9 from Thomas Rohwer <trohwer85 at gmail.com> ---
Ok,

I tried this:

intel_reg_dumper > ~/xlog0.txt
modprobe i915
intel_reg_dumper > ~/xlog1.txt
/bin/su -l -c "exec startx" tr

instead of just starting X with both kernels.

When I load i915 before starting X with startx, the screen goes black and
X and suspend/resume does not recover from this situation with
BOTH kernels. The content of xlog0.txt and xlog1.txt is
the same for both kernels (attached).

I verified that the original behaviour still exists: With vanilla 3.15 I get a
black screen after starting X and with the patched one (i.e.
.initial_config = intel_fb_initial_config removed) it works.

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