linux-kernel - Re: [RFC PATCH 7/7] drm/pci: Defer initialization of secondary graphics devices until switcheroo is ready

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Message-ID: <20120820155740.GA30611@srcf.ucam.org>
Date:	Mon, 20 Aug 2012 16:57:41 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Dave Airlie <airlied@...il.com>, Daniel Vetter <daniel@...ll.ch>,
	David Airlie <airlied@...ux.ie>,
	dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
	Andreas Heider <andreas@...tr.de>
Subject: Re: [RFC PATCH 7/7] drm/pci: Defer initialization of secondary
 graphics devices until switcheroo is ready

On Mon, Aug 20, 2012 at 10:56:33AM -0500, Seth Forshee wrote:
> On Mon, Aug 20, 2012 at 04:36:40PM +0100, Matthew Garrett wrote:
> > Won't this break the multiple cards with independent outputs case?
> 
> Yes, if they don't have a switcheroo handler. I only have experience
> with one such machine, which had optimus graphics. My recollection is
> that it did have a switcheroo handler, which was only capable of
> controlling power to the discrete card.

So if I have a desktop machine and install two graphics cards?

-- 
Matthew Garrett | mjg59@...f.ucam.org
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