Unable to use USB display as primary

[PAPADELTA]

Hi

I have an Asus MB168+ USB3 display, which I used to use on it's own, attached to an Asus Vivo mini PC, running Windows 10.

I have now upgraded to the Anniversary edition 14393.321.

I have un-installed the Asus software and loaded the Displaylink 8.0.762.0 driver.

The usb display works perfectly, when I have another monitor connected to the PC's HDMI port. Using the Windows app I can duplicate the displays, extend the displays, show only on 1 (the HDMI monitor) and even show only on 2 (the usb display)

However, as soon as I unplug the HDMI monitor, the usb display, while showing the full desktop and icons, will not show any applications, except in the task bar.

If I boot the system with just the usb display connected, I get the same full desktop without the ability to run applications at full or part screen. When I plug the HDMI monitor back in, full function returns to the usb display, while nothing shows on the monitor. Windows settings indicates that the usb display is still number 2 and I am in show only on 2.

When in Windows display settings, the "make this my main display" checkbox will not activate.

Strangely, the HDMI monitor does not have to be powered up, only connected.

I bought this light weight setup so that I did not have to carry round a monitor and I had more versatility than a laptop.

Is this issue recognised and will there be a fix?

Cheers

[AlbanRampon]

Hello,

I have a few questions to be able to understand what you have.
Can you tell me which graphics card you have and which driver version?
You can also use our customer support tool after you've reconnected the other monitor so I can look into the logs. If you activate advanced logging, I can see what happened during the Asus USB monitor only period (connect HDMI, activate the logging, disconnect HDMI wait 30s, reconnect HDMI, deactivate logging and gather logs)

I believe you have a ghost monitor somewhere still present and that monitor is the primary.
If you right click on the desktop and then select Display settings, can you use the Win+Shift+Right Arrow key to move the window to the Asus MB168+ ?

Kind regards,
Alban

[PAPADELTA]

Thanks Alban for the response.

My Asus Vivo has an Intel HD Graphics 8086-0A16 with an Intel driver 20.19.15.4474 dated 13 Jun 16.

I have tried to upload the logs as you requested. Please see zip file of those in my displaylink/debug folder. I hope you can make some sense of them.

Yes, I can move the display to the usb unit, but only if the HDMI is attached. If it is not attached, right clicking the desktop has no effect (I think it is in extended mode)

I would like to use the USB as a stand alone unit.

Cheers

[AlbanRampon]

Hello,
I'm missing quite a few files from the usual log, unfortunately.
Would you please use the tool linked in my forum signature which collects the machine information?
DisplayLinkManager.log will not list why Display 1 is not there as it's not a DisplayLink monitor. If you gather the logs when the issue is present, then I can get a snapshot of what Windows believes is there.
Also, when you do a Print Screen and paste it in Paint. Do you see the content from the ghost Display 1 ?
Kind regards,
Alban

[PAPADELTA]

Hi again

I have re-run the advanced options in your tool and simulated the problem by unplugging the HDMI cable, waiting for 30 secs and then plugging it back in.

The USB monitor does not show open applications while the HDMI cable is unplugged.

I attach the debug folder.

I have also included in the folder a screen print while the HDMI cable is unplugged. Interestingly, it shows two screens, one complete and an extension, which is what shows on the usb display. So yes, there would appear to be a phantom primary display, even though the hdmi cable is unplugged.

I hope you can make sense of it this time.

Regards