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Lenovo ThinkCentre M92p driving two monitors.
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pe...@easthope.ca
Dec 27, 2022, 8:40:05 PM12/27/22
to
An M92p has a DisplayPort (DP++) connector and a VGA connector. An
old VGA monitor can be connected directly.
Any advice about choosing an adapter to connect DP++ to the DVI
connector on a 2nd monitor?
Any advantage in finding a way to connect two monitors to the one DP++?
Thanks, ... P.
mobile: +1 778 951 5147
VoIP: +1 604 670 0140
https://en.wikibooks.org/wiki/User:PeterEasthope
old VGA monitor can be connected directly.
Any advice about choosing an adapter to connect DP++ to the DVI
connector on a 2nd monitor?
Any advantage in finding a way to connect two monitors to the one DP++?
Thanks, ... P.
mobile: +1 778 951 5147
VoIP: +1 604 670 0140
https://en.wikibooks.org/wiki/User:PeterEasthope
Felix Miata
Dec 27, 2022, 9:50:06 PM12/27/22
to
peter@e... composed on 2022-12-27 16:47 (UTC-0800):
> An M92p has a DisplayPort (DP++) connector and a VGA connector. An
> old VGA monitor can be connected directly.
> Any advice about choosing an adapter to connect DP++ to the DVI
> connector on a 2nd monitor?
> Any advantage in finding a way to connect two monitors to the one DP++?
DVI doesn't carry audio. DP does.
https://en.wikipedia.org/wiki/DisplayPort#Multi-Stream_Transport_(MST) is the way.
--
Evolution as taught in public schools is, like religion,
based on faith, not based on science.
Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
Felix Miata
> An M92p has a DisplayPort (DP++) connector and a VGA connector. An
> old VGA monitor can be connected directly.
> Any advice about choosing an adapter to connect DP++ to the DVI
> connector on a 2nd monitor?
> Any advantage in finding a way to connect two monitors to the one DP++?
https://en.wikipedia.org/wiki/DisplayPort#Multi-Stream_Transport_(MST) is the way.
--
Evolution as taught in public schools is, like religion,
based on faith, not based on science.
Team OS/2 ** Reg. Linux User #211409 ** a11y rocks!
Felix Miata
Anssi Saari
Dec 28, 2022, 3:00:06 AM12/28/22
to
Felix Miata <mrm...@earthlink.net> writes:
> https://en.wikipedia.org/wiki/DisplayPort#Multi-Stream_Transport_(MST) is the way.
I wonder if that works in Linux since the wikipedia article doesn't say,
> https://en.wikipedia.org/wiki/DisplayPort#Multi-Stream_Transport_(MST) is the way.
only that it works in unspecified Windows and not in MacOS 10.15
Catalina. Not that I have any displays with the requisite DP outputs so
it's snakey cabley city on my desk.
Felix Miata
Dec 28, 2022, 3:30:05 AM12/28/22
to
Anssi Saari composed on 2022-12-28 09:50 (UTC+0200):
> Felix Miata wrote:
>> https://en.wikipedia.org/wiki/DisplayPort#Multi-Stream_Transport_(MST) is the way.
> I wonder if that works in Linux since the wikipedia article doesn't say,
> only that it works in unspecified Windows and not in MacOS 10.15
> Catalina. Not that I have any displays with the requisite DP outputs so
> it's snakey cabley city on my desk.
For several years I had a Dell display with MST build in. It died before it turned
5 on a 3 year warranty. It had DP input and DP output, and worked daisy-chaining
just fine in every Linux I connected it to. I think MST is how some docking
stations work. I have an MST adapter on order from eBay now.
AFAIK, DP to HDMI adapters only work in one direction (e.g. both of mine), DP on
the PC/GPU, HDMI on the display.
> Felix Miata wrote:
>> https://en.wikipedia.org/wiki/DisplayPort#Multi-Stream_Transport_(MST) is the way.
> I wonder if that works in Linux since the wikipedia article doesn't say,
> only that it works in unspecified Windows and not in MacOS 10.15
> Catalina. Not that I have any displays with the requisite DP outputs so
> it's snakey cabley city on my desk.
5 on a 3 year warranty. It had DP input and DP output, and worked daisy-chaining
just fine in every Linux I connected it to. I think MST is how some docking
stations work. I have an MST adapter on order from eBay now.
AFAIK, DP to HDMI adapters only work in one direction (e.g. both of mine), DP on
the PC/GPU, HDMI on the display.
pe...@easthope.ca
Dec 28, 2022, 1:50:06 PM12/28/22
to
From: Felix Miata <mrm...@earthlink.net>
Date: Tue, 27 Dec 2022 21:46:32 -0500
for more than one audio output?
Currently here, audio is available from sockets on the mainboard or
from a USB adapter. The ThinkCentre M92p has USB.
No monitor here has built-in audio. DP audio would require an adapter
to a plug on a speaker.
So I think of putting an adapter such as one of these on the DP++ socket.
https://www.ebay.ca/itm/154795004186
https://www.ebay.ca/itm/185532148744
Then connect the DVI monitor there and VGA to VGA.
One of these might allow three monitors.
"MST Hub DP DisplayPort 1.4 Bi-Direction Switch Support HDCP SST Extended 4K@60hz"
https://www.ebay.ca/itm/144864706204
"DP DisplayPort Bi-Direction Switch Splitter Converter MST Hub 4K 8K"
https://www.ebay.ca/itm/134137803289
The distinction between manual switching of one display between two
monitors and one display simultaneously on two monitors isn't stated
well in the descriptions. Manual switching won't help.
Thx, ... P.
Date: Tue, 27 Dec 2022 21:46:32 -0500
> DVI doesn't carry audio. DP does.
Therefore take one audio output from the DP++ port? Is there a need
for more than one audio output?
Currently here, audio is available from sockets on the mainboard or
from a USB adapter. The ThinkCentre M92p has USB.
No monitor here has built-in audio. DP audio would require an adapter
to a plug on a speaker.
So I think of putting an adapter such as one of these on the DP++ socket.
https://www.ebay.ca/itm/154795004186
https://www.ebay.ca/itm/185532148744
Then connect the DVI monitor there and VGA to VGA.
One of these might allow three monitors.
"MST Hub DP DisplayPort 1.4 Bi-Direction Switch Support HDCP SST Extended 4K@60hz"
https://www.ebay.ca/itm/144864706204
"DP DisplayPort Bi-Direction Switch Splitter Converter MST Hub 4K 8K"
https://www.ebay.ca/itm/134137803289
The distinction between manual switching of one display between two
monitors and one display simultaneously on two monitors isn't stated
well in the descriptions. Manual switching won't help.
Thx, ... P.
Felix Miata
Dec 29, 2022, 12:30:05 AM12/29/22
to
peter@e... composed on 2022-12-28 10:31 (UTC-0800):
> From: Felix Miata <mrm...@earthlink.net>
> Date: Tue, 27 Dec 2022 21:46:32 -0500
>> DVI doesn't carry audio. DP does.
> Therefore take one audio output from the DP++ port? Is there a need
> for more than one audio output?
Don't underestimate needs of creative types in the AV industries or among
audiophiles.
> No monitor here has built-in audio. DP audio would require an adapter
> to a plug on a speaker.
IME, monitors last far shorter than can reasonably be expected. Now when I buy
monitors, speakers are a consideration.
> So I think of putting an adapter such as one of these on the DP++ socket.
> https://www.ebay.ca/itm/154795004186
> https://www.ebay.ca/itm/185532148744
> Then connect the DVI monitor there and VGA to VGA.
IME, those work just fine as long as you realize DVI is video-only.
> One of these might allow three monitors.
> "MST Hub DP DisplayPort 1.4 Bi-Direction Switch Support HDCP SST Extended 4K@60hz"
> https://www.ebay.ca/itm/144864706204
> "DP DisplayPort Bi-Direction Switch Splitter Converter MST Hub 4K 8K"
> https://www.ebay.ca/itm/134137803289
> The distinction between manual switching of one display between two
> monitors and one display simultaneously on two monitors isn't stated
> well in the descriptions. Manual switching won't help.
AFICT, Bi-Direction is a misnomer as applied to those devices. They are simply
switches to select one path to the exclusion of another. The direction of flow
along conductors between display and graphics outputs is fixed in the specs, is
not alterable via any switch.
https://www.ebay.com/itm/313596983241 is what I have on order to substitute for
the capability of my dead 29" Dell.
> From: Felix Miata <mrm...@earthlink.net>
> Date: Tue, 27 Dec 2022 21:46:32 -0500
>> DVI doesn't carry audio. DP does.
> Therefore take one audio output from the DP++ port? Is there a need
> for more than one audio output?
audiophiles.
> No monitor here has built-in audio. DP audio would require an adapter
> to a plug on a speaker.
monitors, speakers are a consideration.
> So I think of putting an adapter such as one of these on the DP++ socket.
> https://www.ebay.ca/itm/154795004186
> https://www.ebay.ca/itm/185532148744
> Then connect the DVI monitor there and VGA to VGA.
> One of these might allow three monitors.
> "MST Hub DP DisplayPort 1.4 Bi-Direction Switch Support HDCP SST Extended 4K@60hz"
> https://www.ebay.ca/itm/144864706204
> "DP DisplayPort Bi-Direction Switch Splitter Converter MST Hub 4K 8K"
> https://www.ebay.ca/itm/134137803289
> The distinction between manual switching of one display between two
> monitors and one display simultaneously on two monitors isn't stated
> well in the descriptions. Manual switching won't help.
switches to select one path to the exclusion of another. The direction of flow
along conductors between display and graphics outputs is fixed in the specs, is
not alterable via any switch.
https://www.ebay.com/itm/313596983241 is what I have on order to substitute for
the capability of my dead 29" Dell.
pe...@easthope.ca
Dec 29, 2022, 1:10:05 PM12/29/22
to
From: Felix Miata <mrm...@earthlink.net>
Date: Thu, 29 Dec 2022 00:27:55 -0500
Date: Thu, 29 Dec 2022 00:27:55 -0500
> https://www.ebay.com/itm/313596983241 is what I have on order to substitute for
> the capability of my dead 29" Dell.
> the capability of my dead 29" Dell.
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