[Nouveau] Why report LVDS as disconnected when lid is closed?

Ben Skeggs skeggsb at gmail.com
Wed Feb 24 16:01:55 PST 2010

On Wed, 2010-02-24 at 18:51 -0500, Tavian Barnes wrote:
> What's the motivation behind commit 60821e0 (drm/nouveau: report LVDS
> as disconnected if lid closed)?  The only noticeable effect I can see
> from it is that if I turn on my laptop and then close the lid, X fails
> to start as it can't find any screens.  In fact, if I close the lid
> before nouveau initialises, I don't even get a framebuffer console.
> I know I can just use the ignorelid module param, but what's the
> benefit without it?
The benefit is people on laptops with docking stations can close the
lid, and have two external outputs light up.  Otherwise, LVDS (which
isn't visible because the lid is closed) will likely be programmed and
only one external display.


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