USB Video Adapter Not Sending Video
 

Win 8, new Acer i7 computer with HD 4000 integrated graphics, but I am not using the integrated graphics. I have a NVIDIA GT 520 installed with the latest drivers with two screens on it. I followed instructions for uninstalling and installing latest 7.1 drivers.

My screen in black. The device is sending a signal. In fact, Windows recognizes the display and I can change the resolution (confirmed on the displays menus). Windows even reports the correct brand and model number for the display. However, there is no image. It's just a black screen.

I confirmed there is only the one display adapter listed in Device Manager. The USB to Video device also appears in the Device Manager.

I tried it with two monitors, different brands, different native resolutions.

My computer has USB 3.0 and 2.0 ports, but I am using the 2.0 ports only.

Log attached.

One interesting point. Even though the driver I installed was 7.1M0, if I look at the Sabrent USB-DH88 in Device Manager, the driver is listed as 7.0.43526.0 with a date of 11/20/2012. When I try to install 7.1M0 again, it says the software is up to date.

Hi

Can you try upgrading your graphics driver to the latest http://www.nvidia.co.uk/object/win8-...driver-uk.html ?

Let me know if the issue persists afterwards.

Thanks,
James

Did that. Uninstalled DisplayLink. Rebooted. Reinstalled. Same thing.

Hi,

Are you able to try a different video cable?

Regards,
James

I did that. I tried multiple monitors, multiple cables, and a variety of adapters.

Ok, now I'm pissed. I bought another brand I hardware, the HIS Multiview II, only to find out that it uses the DisplayLink software, too. Guess what... SAME PROBLEM!

So that eliminates hardware. How about making your software work with Windows 8 before announcing that it does. It clearly doesn't.

BTW - removed the Nvidia card and tried it using integrated graphics only. Still doesn't work.

Yes, I completely removed the Nvidia drivers, too.

Waste of time.

I purchased these products to avoid getting a PCI x1 graphics card because I am out of x16 slots. I guess that was a bad idea.

I've had the most frustrating day with the Targus USB3 dock w/ dual video. I tried 3 docks. Each dock worked for a short time, one of them until I rebooted, but now they are just DOA as far as video ports go. I only see the Generic Monitor (laptop) and that's it. They don't work on other laptops either. The external monitors are black, so they get some sort of signal, but that's it. I've spent a ton of time on the phone w/ Targus too to no avail. Frustrating! For some reason the 3rd dock worked and continued to work. I have a feeling there was a bad batch or some bad firmware update process.

I just bought a PCI x1 card for my PC on Amazon. Returning my DisplayLink product tomorrow. I should have listened to my gut from the start.

Too bad- I had high hopes for a laptop add'l monitor, too. I won't go down the USB adapter route again, especially if it uses this software.