[Bug 97941] [byt dsi] DRM i915 on surface 3 fail

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=97941

--- Comment #21 from Benoit Gschwind <gschwind at gnu-log.net> ---
(In reply to Bastien Nocera from comment #20)
> Either I did something wrong rebasing or there's a bug in that branch.
> 
> I rebased all the patches mentioned in comment 16 (the patch series, plus
> the 2 independent patches on top) on top of the vlv_chv_dsi_dpll branch. But
> the machine must be crashing in the middle of setting up the display.
> 
> For the record, this is what the patch on top of the branch looks like:
> http://paste.fedoraproject.org/263933/44849914
> 
> Is there a way to load force the i915 driver to do modesetting *after* the
> machine has been booted with nomodeset? This would allow me to connect to
> the machine through ssh and capture at least the early parts of the
> modesetting setup.

Hello Bastien,

You have to compile i915 and drm as module and black list them in 

/etc/modprobe.d/blacklist.conf

by adding :

blacklist drm
blacklist i915

then load modules manually

# modprobe drm debug=0xff
# modprobe i915

that's it

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