Dell E7270 - Both Monitors Blinking Randomly

[bbain@cas.org]

Dell E7270 - Both Monitors going black repeatedly. This occurs randomly and is not reproducible at-will. The USB Dock is connected via USB 3 connection to the back of the laptop. The laptop and dock are both powered via their proper power cables.

Connected to 2 24" Dell Monitors, connections are HDMI to DisplayPort and DisplayPort to DisplayPort. Both are running at the default refresh rate of 60 Hertz. We have replaced the cabling, including the USB and video cables. We have disabled USB Selective Sleep from the Windows 7 Pro x64 Power Options per recommendations of this site.

We have contacted Dell. They sent a tech on site. After going through the troubleshooting steps below they have now advised that we run DisplayLink's support tool and open a thread for support. We have done so and the .zip is attached.

Please see steps already completed below:

(http://www.dell.com/support/article/us/en/19/QNA42392):

1.Latest system BIOS from Dell.com/Support.
**Installed Latitude_E7x70_1.11.3
2.Latest chipset driver from Dell.com/Support.
**Installed Chipset_Driver_320CP_WN32_10.1.1.9_A01
3.Latest USB 3.0 driver from Dell.com/Support,
**Installed Chipset_Driver_CWGRX_WN32_4.0.6.60_A04_01
4.Latest video driver from Dell.com/Support or the vendor for your video card.
**Installed Video_Driver_MKHKR_WN32_20.19.15.4483_A04
5.Run Windows Update by searching for wuapp on the Windows 7 Start Menu or Windows 8 Start Screen then clicking or taping wuapp.exe.
**Found 2 missing updates, installed both KB3033929 and KB3042058
6.Install the latest DisplayLink software from DisplayLink.com/Downloads
**Installed DisplayLink USB Graphics Software for Windows 8.0 M3