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snake2332
Token Ring
Posts: 159
Registered: ‎04-07-2014
Location: US
Views: 4,180
Message 21 of 156

Re: Yoga 720 dock compatibility


@yyzlhr wrote:

I have a 720 and it most definitely has 2 USB C ports. However only one is thunderbolt enabled and supports displayport alt.  The other port does not support video at all and only carries data and power.


Oh ya, sorry, I got focused in on the 15" model and forgot the OP was asking about both 13" and 15". My bad.


kofstl
Punch Card
Posts: 22
Registered: ‎07-07-2017
Location: US
Views: 4,163
Message 22 of 156

Re: Yoga 720 dock compatibility

Hi, could you please try with a 2nd monitor and let us know if it works? Thanks!

kofstl
Punch Card
Posts: 22
Registered: ‎07-07-2017
Location: US
Views: 4,164
Message 23 of 156

Re: Yoga 720 dock compatibility


@BOSDesignCo wrote:

You know, I saw documented that the yoga 720 can only support one external display.. it's definitely not true... I've used the lenovo tb3 dock w it as well as the Toshiba dynadock. Both work w 2 extended displays just fine. TB3 obv. performs better with intensive graphics processing...


Hi, could you please send me a link to the Toshiba Dynadock?

kofstl
Punch Card
Posts: 22
Registered: ‎07-07-2017
Location: US
Views: 4,163
Message 24 of 156

Re: Yoga 720 dock compatibility

I bought this one on jet.com and will try it with my Lenovo Yoga 720 (15) and let you guys know.

 

If it doesn't work, I don't know if I should spend $200+ on a Lenovo TB3 or USB-C dock. I am thinking about using one TB3->HDMI cable + one USB3.0->HDMI cable, to connect to my two 1080p monitors. Do you guys think this setup will work?

OESR
Paper Tape
Posts: 5
Registered: ‎07-08-2017
Location: US
Views: 4,138
Message 25 of 156

Re: Yoga 720 dock compatibility

I have used several USB 3 docks and they do not work well for me. I generally use CAD and 3D heavy software and they produce an inferior video quality (even though display settings say 1920x1080@60hz, mouse/courser moves sluggish and lines are not sharp). For web browsing and even YouTube video might be fine, but forget about gaming or anything very heavy.

 

All USB displays I have found are the same as they use Displaylink Technology and Drivers.

If anybody founds a solution of connecting two additional external monitors 1920x1080@60Hz not using Displaylink equipment, please let us know.

 

Everything I have read says that the USB C 3.1 Alt Mode or Thunderbolt 3 from my Yoga 720 72015IKB only has one DP channel. But I’m hoping that maybe because I do not need 4K outputs, I can connect two 1080p monitors using two Displayports from the Thunderbolt 3 connection.

 

So far, loving my new Yoga 720 but would be disappointed if Lenovo does not allow multiple displays from its Thunderbolt connection, as this laptop hardware is more than capable and they just decided to go cheap on the Thunderbolt 3 (2 lanes instead of 4). Hoping the lack of documentation from Lenovo is the cause of the confusion and that this computer can really handle full Thunderbolt 3 or that they can upgrade via BIOS/Driver updates).

 

If somebody uses Thunderbolt 3 to DUAL HDMI or DP (like the ones from Plugable or StarTech) please let us know. And Thanks.

yyzlhr
Fanfold Paper
Posts: 22
Registered: ‎05-27-2017
Location: CA
Views: 4,104
Message 26 of 156

Re: Yoga 720 dock compatibility

2 PCI E lanes should support two 1080p displays.  If you're trying to drive dual 4k, that will be a no go for sure.  

snake2332
Token Ring
Posts: 159
Registered: ‎04-07-2014
Location: US
Views: 4,087
Message 27 of 156

Re: Yoga 720 dock compatibility

If performance isn't up to snuff with the Wavlink dock, I am going to try daisy-chaining since my Dell QHD monitors support it and DP1.2 supports up to dual 2560x1600 diasy-chained from a single output. Not sure which TB3 dock I will purchase to attempt this with, but probably not the Lenovo one since it's $280.   Edit: Now that I've looked at what's available, I might actually get the Lenovo one. The Plugable one looks nice but says it requires two display paths over the TB3 port, though I wonder if it would behave like the Lenovo one and at least 1 DP output would work.

snake2332
Token Ring
Posts: 159
Registered: ‎04-07-2014
Location: US
Views: 4,077
Message 28 of 156

Re: Yoga 720 dock compatibility


@yyzlhr wrote:

2 PCI E lanes should support two 1080p displays.  If you're trying to drive dual 4k, that will be a no go for sure.  


I think it's more about the fact that Lenovo configured this machine to have only 1 display path via the TB3 connection. I believe adapters like this for dual HDMI do not work, but it would be nice to get some confirmation from a user (or *gasp* Lenovo themselves!). 

BOSDesignCo
Paper Tape
Posts: 11
Registered: ‎07-01-2017
Location: US
Views: 4,060
Message 29 of 156

Re: Yoga 720 dock compatibility

https://www.walmart.com/ip/Toshiba-Dynadock-Docking-Station-PA3927U1PRP/161492336?wmlspartner=wlpa&s...

 

This one works well for basic usages.. gaming or 3d modeling is not recommended.

snake2332
Token Ring
Posts: 159
Registered: ‎04-07-2014
Location: US
Views: 4,044
Message 30 of 156

Re: Yoga 720 dock compatibility


@BOSDesignCo wrote:

https://www.walmart.com/ip/Toshiba-Dynadock-Docking-Station-PA3927U1PRP/161492336?wmlspartner=wlpa&s...

 

This one works well for basic usages.. gaming or 3d modeling is not recommended.


Personally, I would spend $35 more for the Wavlink one since that Toshiba can't even do QHD, much less dual 4K or 5K. Even if you just have 1080p displays now, the Wavlink will future-proof you and likely provide better performance at all resolutions. The DisplayLink chip in the Wavlink is their best one, the DL-6000, while I think that Toshiba must have the DL-3000 chipset: http://www.displaylink.com/integrated-chipsets

 

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