XPS 15 9550 HDMI 2.0

I tried using this USB-C to HDMI 2.0 Monoprice adapter:

http://www.monoprice.com/product?p_id=13235

I am only getting 4k@30Hz, not 60Hz. Am I doing something wrong or was the adapter falsely advertised?

By the way, I was able to get 4k@60Hz via a USB-C to Mini DisplayPort adapter.

 

Anyone?

 

I believe the HDMI port on the 9550 is only HDMI 1.4 so you can't get 4k @ 60Hz output from it no matter what cable you use. Yes, that is a bummer!

 

The separate HDMI port is indeed only 1.4 but through usb-c he should be able to output 4k@60Hz with a USB-C to HDMI adapter/cable...

I haven't done it myself but I believe others have done it.

 

Is there an example of someone getting 4k@60Hz over HDMI out of the USB-C port? I'm trying this without any luck.

 

If I remember correctly, in the mobiletechreview of the XPS 15 the reviewer stated that she tried several adapters and was in fact successfull in outputting 4k@60HZ over usb-c. I'm not sure whether she actually mentioned which adapter worked, though. It might be useful to browse through the comment section on the review site.

 

I think I remember reading somewhere else that the Monoprice adapter didn't indeed outputted 60Hz. Have you tried another adapter?

 

Why not use Dell's USB-C to HDMI 2.0 Adapter? Is it not available yet?
I just noticed it when clicking through the configurator for the Precision 5510.

 

I can get 4K/60Hz/4:4:4 out of the Dell USB Type-C to HDMI 2.0 adapter, but I'm unable to get multichannel audio out of it despite the fact that Windows reports it as 7.1 capable.

It did give me some trouble at first but seems to work fine most of the time now.

 

I've only tried Monoprice.

This dell adapter?

http://accessories.us.dell.com/sna/productdetail.aspx?c=us&cs=19&l=en&sku=470-ABHH

What trouble did it give you at first?

 

This one:

http://www.dell.com/en-us/shop/accessories/productdetails/470-abmz

I had to unplug and replug it several times and fiddle with the resolution before I got 4K/60Hz but it eventually worked and continues to work. I also connect through an AV receiver then to my tv so you may have better luck connecting directly to the display.

Also, in spite of claims that all HDMI high speed cables will pass a 4K/60Hz/4:4:4 signal, only one of the four cables I had did.

 

What cable worked for you?

I'm starting to think that my problem was the cables. I'm using these:

http://www.amazon.com/gp/product/B000AA2RCY?psc=1&redirect=true&ref_=oh_aui_search_detailpage
http://www.amazon.com/gp/product/B00NH126Q0?psc=1&redirect=true&ref_=oh_aui_search_detailpage

I'm thinking about buying this one:
http://www.amazon.com/HDMI-Cable-6f...p/B00NQ9OQU2/ref=cm_cr_pr_product_top?ie=UTF8

 

I ended up buying a few of these and they work:

http://www.amazon.com/gp/aw/d/B0019...ultra+hdmi&dpPl=1&dpID=41RMHYQXNLL&ref=plSrch

The four I originally had were AmazonBasics from a few years ago, but still high speed with Ethernet. One went blank at anything above 4K 30Hz but the laptop still detected it as connected. Two would produce an image but looked like the screen was either tinted green or pink. The one that did work was noticeably thicker than the others, perhaps because it was 15 feet long. I'm not sure if the newer AmazonBasics cables work, but to be safe I'd make sure to buy one that states it supports the full 18gbps bandwidth.

 

Thanks for the suggestions.

Unlike the Monoprice adapter, the Dell adapter(mentioned in this thread) can produce 60Hz, after enabling "HDMI UHD Color" in the TV settings. Also, all of my HDMI cables work with this setup, including the Amazon Basics cable.

 

No, it is just a usb-c to hdmi 2.0 adapter.
http://accessories.dell.com/sna/productdetail.aspx?c=us&l=en&s=dhs&cs=19&sku=470-ABMZ#Overview

 

Has anyone tried this adapter on ebay? $15 with shipping and says it supports HDMI 2.0 and 4k @ 60Hz (using MHL Mode).

 

I'm pretty sure this laptop doesn't have MHL Mode but I can be wrong. The one it certainly has is DisplayPort Alternate Mode.

 

Hey, I know I'm gravedigging a bit here, but I still have not successfully been able to output 60hz@4k via HDMI. I am considering getting one of the cables you all said works above, as the option shows up in windows but the TV just gives me a "no signal" message. Is this the same thing that happened to you before replacing the cable?

 

I guess I will add my contribution to the gravedigging party. I recently got a new AVR receiver (Onkyo RZ-800) and a new 4:4:4 TV (Samsung 6 series.) I had to set the TV to UHD color. My old HDMI cable had trouble losing data and automatically set chroma to 4:2:0. The Amazonbasics cable displayed a clean, pixel perfect picture.

The dongle I use is a plugable I purchased from Amazon.

 

I'm a little late to the party, but I have two different types of 4k Monitors. One Older Model Samsung UD28D590 and a newer LG Ultra HD. The old Samsung 4K does NOT support 4k@60 via it's HDMI input. So that is a problem there. The LG DOES support 4k@60 via the HDMI input. So here are the different ways I have successfully obtained 4k@60hz, or as my computer likes to call it 4k@59hz...

1. Insignia USB-C to HDMI adapter. It becomes extremely hot and starts to cause the connection to drop after a few hours. Find something to cool it down. This seems to be an issue with ALL the USB-C to Whatever cords I've used. Only works on monitors that support 4k@60 over a single HDMI cable.
2. Pluggable USB-C to DisplayPort cable. It also becomes hot at the DisplayPort connector. However, it gives me 4k@60 for both of my monitors. Not at the same time obviously.
3. Dell TB15 Thunderbolt 3 Dock. (What a nightmare it is..) The HDMI Output on the Dock is NOT a direct HDMI output from the laptop. It acts an adapter which I believe contributes to most of it's heat. However, that being said I cannot get 4K@60 via the HDMI out on the Dock. Even though it is most definitely using a DisplayPort lane to output the video. I know this because if you attempt to use the Full DisplayPort AND the HDMI output you get bandwidth warnings. So you can use the Mini-DP and Full-DP or Full-DP and HDMI output on the Dock. The HDMI out on the laptop gives you the ability to hook up THREE monitors plus the screen built in. I have also successfully obtained 4k@60 via a USB-C adapter to HDMI via the TB15 dock USB-C pass-through. But as I said it all gets very hot. The TB15 is not even worth it.

I recommend the StarTech USB-C to Dual-DisplayPort adapter. Then buying a USB 3.x hub which includes an ethernet adapter. The cost of those two items is less than any of the docks and gives you everything the docks give. Plus, the USB-C to Dual-DisplayPort adapter from Pluggable or StarTech both allegedly support dual 4k@60hz.

The Dell XPS 15 9550 has TWO DisplayPort channels. This is not DisplayPort chaining as far as I can tell. It literally has the bandwidth to push two full DisplayPort connections. So you could technically chain 2-3 monitors via each link for a total of 4-6 monitors at Full HD.

Be careful of any USB-C to HDMI or USB-C to DisplayPort cables/adapters. They have all flaked out on me and it's due to over heating as far as I can tell. Any passive adapter should work much better. Which surprises me as I would have figured the USB-C to DisplayPort from pluggable would have been passive. So I don't understand the heat issue at the DisplayPort connector.

At any rate, this is a great laptop. USB-C/Thunderbolt 3 just doesn't have enough support yet. It will get there. I'm currently running TWO 4k monitors at 60hz using the Dell TB15 dock. But I can't recommend buying it as it literally took me months to get it all working right.

On a completely unrelated note; for anyone having problems with their Dell TB15 Thunderbolt 3 dock I've noticed that the direction you plug the USB-C connector into the laptop matters. It's supposed to be universal but it appears there are some manufacturing issues with the pins. If I plug it in one way I cannot get the USB 3 Controller to connect. I unplug it, plug it in the other way and it works no problem. I just marked which way was 'up'.

(My monitor blinked once while writing this using the Pluggable USB-C to DisplayPort cable. I'll have to bump the resolution back down to 2k again. Doing so fixes the 'disconnects') This is all so sad.