linux-kernel - Re: [PATCH] apple-gmux: Restore switch registers on suspend/resume

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Message-ID: <1343835344.26866.150.camel@shinybook.infradead.org>
Date:	Wed, 01 Aug 2012 16:35:44 +0100
From:	David Woodhouse <dwmw2@...radead.org>
To:	Seth Forshee <seth.forshee@...onical.com>
Cc:	Matthew Garrett <mjg59@...f.ucam.org>,
	Andreas Heider <andreas@...tr.de>,
	Arun Raghavan <arun.raghavan@...labora.co.uk>,
	linux-kernel@...r.kernel.org, airlied@...hat.com
Subject: Re: [PATCH] apple-gmux: Restore switch registers on suspend/resume

On Tue, 2012-07-31 at 10:18 -0500, Seth Forshee wrote:
> 
> All of this is working to the extent that I can boot with the Radeon
> card active, switch over to the Intel card, and get the EDID for the
> internal panel and an external monitor (although oddly on an HDMI
> connector, no on the DP like I expected). Both screens are remaining
> blank though. However I'm also getting blank screens if I mux over to
> the Intel GPU from grub before loading the kernel, which used to work
> for the LVDS panel at least. 

Hm, when I was changing over to the external screen before boot, I could
get the LVDS working but *not* an external VGA or DVI monitor (via the
standard Apple adaptors). Should I expect that to work if I change the
mux 'properly' at runtime?

-- 
dwmw2

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