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I just got a new surface book 3. I have the surface dock with 2 external monitors extended using QGeeM USB-C to HDMI Female adapters . The 3rd monitor (second external) keeps flickering on and off every few minutes. I went and bought a new Anker USB-C to HDMI Female adapter thinking one of them was bad. When using the ANKER adapter, the screen isn't flickering but I get a message that it may not be supplying sufficient power and I have the yellow warning triangle icon on my battery in the sys tray. I'd rather have flicking than cause damage to the battery or power supply so I switched back to the QGeeM adapter for now.

I figure it's gotta be a power related issue, just not sure how to solve it. Should I try using the DisplayPort connection? Any help is appreciated. Here is my setup:

  • Surface Book 3 15in, Windows 10
  • Surface dock and power supply
  • 2 Lenovo L24q-30 Monitors (24in 75Hz, HDMI and DP only)
  • 2 QGeeM USB-C to HDMI Female adapters (3rd monitor flashes off/on every few minutes)
  • 1 Anker USB-C to HDMI Female adapter (works but says there are power issues mentioned above)
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  • what happens if you switch the cables around, is it always the same cable causing the flickering? Does it also flicker with one external monitor?
    – Albin
    Commented Aug 7, 2020 at 22:56
  • With the QGeeM adapters it's always the same 1 of the 2 that seems to cause the flicker, no matter which monitor or usb c port it's connected to. And with the ANKER adapter, no matter which usb-c port/monitor combination, it immediately says something about not enough power and I get that warning icon on my battery.
    – WeDoneLost
    Commented Aug 7, 2020 at 23:14
  • I'm confused now... why do you get a a power warning on your surface? the the monitor supplying your surface with power?
    – Albin
    Commented Aug 8, 2020 at 8:59
  • I only get that when I use the Anker adapter with any of the external monitors. Not sure why but it must be something with that adapter I guess. When using the QGeeM adapter i get the flickering. I've ordered another adapter and going to try that. So it'll be my 3rd brand to try, I dunno.
    – WeDoneLost
    Commented Aug 8, 2020 at 21:10
  • something fishi is going on, USB3 can be used to supply power to the laptop. If I understood you correctly, your suface "thinks" the monitor is some kind of power supply. How is it actually connected to a power supply?
    – Albin
    Commented Aug 8, 2020 at 21:14

1 Answer 1

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Check if the problem is always caused on the same QGeeM cable or the same monitor (or a certain combination of both).

In regards to the Anker cable USB3 can be used to supply power to the laptop. But as far as I understood this should be the case here. It's either faulty or the wrong cable.

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