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TSUTOMU45
1 Copper

Dell XPS 15 9550 video signal drops using USB-C to DisplayPort cable

Using XPS 15 (UHD, i7) 9550 with a Monoprice USB-C to Displayport cable hooked up to a Dell U2713HM monitor.  Performance is great, except every now and again, the signal drops for a few seconds, turning the screen black. After a few seconds, it returns.  Not sure if this is an issue anyone else has seen.  Graphics drivers and BIOS are updated to the latest versions.

20 Replies
bobcat0217
1 Copper

RE: Dell XPS 15 9550 video signal drops using USB-C to DisplayPort cable

I have the same problem with the XPS13 9350 using a usb-c to hdmi cable. External monitor turns on and off randomly which becomes more pronounced when I close the lid (sleep on close lid is OFF). Funnily enough I tried a longer HDMI cable with Ethernet and I was getting no image at all with lid closed. I also have bios and drivers updated.

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Black7
1 Nickel

RE: Dell XPS 15 9550 video signal drops using USB-C to DisplayPort cable

I'm having the exact same issue...

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KC Sham
1 Nickel

RE: Dell XPS 15 9550 video signal drops using USB-C to DisplayPort cable

i experience intermittent blank screen as well as total lost of signal through USB-C. I've tried with and USB-C to display port adapter as well as the new Dell dock (TB15 w 240W).

Very often my XPS 15 9550 goes to blank screen when the Action Center is launch the first time after the external monitor is connected. After the screen comes back, subsequent opening of the Action Center is fine.

With the same monitor ASUS PG287Q and cable, I am able to keep my 3 yo MacBook Pro connected with no issues for hours, if not days.


Dell, please help us help you.

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Kurt J
1 Copper

RE: Dell XPS 15 9550 video signal drops using USB-C to DisplayPort cable

I'm having the exact same problem.

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Randle81
1 Nickel

RE: Dell XPS 15 9550 video signal drops using USB-C to DisplayPort cable

I have the same issue using both the hdmi and usb-c ports

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Kurt J
1 Copper

RE: Dell XPS 15 9550 video signal drops using USB-C to DisplayPort cable

Does anyone from Dell actually read these forums?  This post has been here for two months with only a bunch of other XPS 15 users saying "Me too!"

This appears to be a real problem.  Does anyone know how to escalate this?

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KC Sham
1 Nickel

RE: Dell XPS 15 9550 video signal drops using USB-C to DisplayPort cable

I even mailed my XPS 15 to the depot explaining my issue with external video monitor support. They took over a week and just sent me back the machine without any repair. Dell service did not even contact me to diagnose the issue together. I'm so wanting to have a great laptop alternatives to Apple MacBook Pro. But, Dell is trying very hard to get rid of any dwindling high-end customers that exists.

I've wasted so much productive hours trying to get this machine to work for me since December.

All those raving reviews of XPS were coming definitely from people who had only spent 1 hr with the machine. And definitely the reviewers didn't have to work with Dell support.

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RE: Dell XPS 15 9550 video signal drops using USB-C to DisplayPort cable

Same issue here. Have the latest BIOS and all Dell updates.

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RE: Dell XPS 15 9550 video signal drops using USB-C to DisplayPort cable

Hi,

I'm getting this same issue now too and it's driving me nuts. Generally: I'm super unimpressed with the stability and quality of the drivers for what is pretty decent hardware.

Using a Google USB-C to DisplayPort adapter going to one 27" monitor, HDMI to another 27" (Benq GW2765HT). 

Intel drivers (not Dell version) v20.19.15.4444 from April 22 2016 (I think the 20 is the Dell number, but it's the Intel v15 that I installed fixing the "crashing on various graphics editor" issue)

Nvidia are the latest  v10.18.13.6519 from May 5 2016

BIOS is latest (updated last week)

Randomly, and regularly the screens will flash black and then recover. I switched the DP and HDMI between the monitors and it still occurred but worse: the DP wouldn't recover and it reverted to the laptop panel.

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