Monitor stuck on displayport with 640x480

Hi,

I spent considerable hours over the last few days trying a number of suggestions on here. Even wiped my machine and reinstalled Windows (that part was overkill and a mistake - I admit).

Anyway I type this evening on my Surface Laptop 3, with a USB-C to Display Port direct cable, connected through a Surface Dock 2 to a Samsung Ultrawide monitor. I have also tried this directly through the laptop and both work.

The game changer for me was definitely the cable. It only arrived today until that point I was trying USB-C to HDMI cables and convertors.

I am still using a backdated driver (05/08/2019 - 25.20.10.7101) - not sure if this is or is not needed but not changing as I am just glad to have the 2nd monitor working and I do not want to tempt fate.

I did also update my dock 2 firmware and Surface firmware at some point over the last few hours also.

I hope someone finds this useful, I apologise if not and wish you all the best of luck getting this fixed.

Take care.

I don't believe this is the issue because it worked for me before on my surface pro 6. It was only when I got a new SurfaceBook that it stopped working. I did however solve this myself by using HDMI instead of display port.

Hi, I just got my Samsung 49" monitor last week and could not believe what happened when I connected it with my Surface Pro 7 which I got just a week earlier: there was no way to increase the resolution from 640x480 via displayport.

The second thing I could not believe was when I found out through this thread that this problem exists since over a year now...and every now and then people post here the same problem, occasionally with "crazy solutions".

Why "crazy"? Well, I am not a computer scientist! I want to unpack the devices I buy and then connect them...thats it. The work around with HDMI works, but it is not the same as displayport...and I want 100Hz.

Is there really no easy solution to that problem yet? A solution that does not involve setting drivers back to old versions ect which I simply don't know how to do. Actually I do believe that can not be expected from a normal business user.

I found a second work around to the HDMI cable myself by the way but that is also not what I want...I want my docking station to do what it is supposed to do. The second work around is to plug in "USB-C Multiport Adapter with 8k DisplayPort &PD" (you can get it for a few bucks at Amazon) and connect that with a normal DisplayPort cable.

Hi Wolfgang,

Totally agree with your frustration and before I found (got lucky) with a solution I was going to send my devices back. The bit I cannot understand is why so many of us have found different ways of 'fixing' the problem.

I do have the full ultra wide resolution now on my Surface Laptop 3 - using an usb-c to DP cable through my Surface dock.

I would be interested to hear if the same cable setup works for you.

Thank you and I wish you all the best.

My dock has no USB-C but I tried a USB-C to DP cable from the Surface Pro 7 and that did not work. Mini DP from dock to DP monitor didn't work either.

WHAT WORKS IS a mini DP to HDMI adapter from the dock and then a normal HDMI cable to the monitor. The solution with the multiport adapter as described before works too.

I can't understand why MSFT provides no patch in over a years time to fix this problem: mini DP dock to DP monitor or USB-C device to DP monitor should really work, without any workarounds.