[Bug 103779] Force enabling HDMI output doesn't work since commit 972e7d71c82e ( v4.2-rc8 - v4.3-rc1 )

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=103779

--- Comment #22 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
(In reply to Tomasz Kazimierczak from comment #21)
> (In reply to Ville Syrjala from comment #19)
> > (In reply to Tomasz Kazimierczak from comment #16)
> > > I was already disabled.
> > 
> > So broken BIOS :(
> > 
> > Does anything change if you set it to "enabled"?
> > 
> > Is there a BIOS update available?
> 
> Yes, actually enabling LVDS sort of fix the problem.
> Clean kernel loaded with same options work just fine.
> And that way the patch is unnecessary.
> 
> But, shouldn't it work also with disabled LVDS?

The problem is that the BIOS still partially enables it. And unfortunately our
current code can't deal with that weird partially enabled hardware state. It
would be possible to rework the code to handle it, but it wouldn't be an
entirely trivial change.

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