[Bug 86551] Screen freezes on boot at "fb: switching to inteldrmfb from simple"

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=86551

Imre Deak <imre.deak at intel.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |jani.nikula at intel.com

--- Comment #5 from Imre Deak <imre.deak at intel.com> ---
(In reply to Mike Auty from comment #4)
> Created attachment 154401 [details]
> dmesg-ramoops-0
> 
> Success!!!
> 
> The ramoops worked, I got a console-ramoops, dmesg-ramoops-0.enc.z, and
> dmesg-ramoops-1.enc.z (after unpacking by removing the pstore time and "no
> errors detected" lines, the -0 and -1 seem identical and contain the data of
> console-ramoops, so only attaching -0).
> 
> From the best I can tell, it's a divide by 0 in the scale function (which is
> new in the git commit I indicated), but I haven't figured out the exact
> source or path causing it.
> 
> Please let me know if you'd like me to run any of the other tests, or have
> any patches you'd like me to try?

Thanks, it was helpful and your bisect result was correct. CC'ing Jani. I found
a similar report:

https://lkml.org/lkml/2014/10/3/415

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