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Re: [97attendees] Display port to HDMI

John Dowdell <john.dowdell.ietf@gmail.com> Mon, 14 November 2016 03:12 UTC

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From: John Dowdell <john.dowdell.ietf@gmail.com>
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Date: Mon, 14 Nov 2016 12:12:27 +0900
In-Reply-To: <20161114011459.GU9776@faui40p.informatik.uni-erlangen.de>
To: Toerless Eckert <tte@cs.fau.de>, Michael Richardson <mcr@sandelman.ca>
References: <60a8be27-9f41-270c-92f2-261e5e202f75@sonic.net> <32068.1479083358@dooku.sandelman.ca> <20161114011459.GU9776@faui40p.informatik.uni-erlangen.de>
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Subject: Re: [97attendees] Display port to HDMI
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If your laptop supports the Dual-Mode DisplayPort, aka DisplayPort ++ (as found on HP business laptops, note the different logos), only need a passive cable or adaptor to connect to HDMI or DVI, because they have compatible hardware [1]. If not, Lenovo supply a cable [2], though this says only supports single link DVI-D.

John 존

[1] https://en.wikipedia.org/wiki/DisplayPort <https://en.wikipedia.org/wiki/DisplayPort>
[2] https://support.lenovo.com/us/en/documents/pd015734
 <https://support.lenovo.com/us/en/documents/pd015734>

 <https://support.lenovo.com/us/en/documents/pd015734>
> On 14 Nov 2016, at 10:14, Toerless Eckert <tte@cs.fau.de> wrote:
> 
> I don't quite understand https://en.wikipedia.org/wiki/DisplayPort,
> but do i read it right that DP 1.0/1.1 might not be HDMI signaling
> compatible, so a cheap passive physical adapter wouldn't work ?
> If i read it right, maybe your notebook has such an old DP port. 
> 
> On Mon, Nov 14, 2016 at 09:29:18AM +0900, Michael Richardson wrote:
>> My new-to-me Thinkpad/Lenovo T420s laptop has VGA, and a Display Port.
>> I got an $8 DP to HDMI adapter from amazon a few weeks ago, but it doesn't
>> seem to drive anything [my home TV, a monitor, the TV in my AirBNB) -- or
>> show up as connected in xrandr.  Could there be different DP cables?
>> I dunno.  If someone has a similar laptop, and a working adapter, I'd love
>> to know what you have.
>> 
>> 
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