Flashing Lines on Monitor

Support
1

Just connected up new B30 received today. PC side works great. When connect Macbooks to USB-C1, I receive multiple flashing lines every couple of seconds on the HP 34hc G4 monitor. 2 different macbooks, macbook pro and macbook air. Have tried different USB-C cable. Have checked firmware and found it to be 1.1.0. Performed update using ProAVManager and restarted. Still have flashing lines.

Any solution or additional steps I can take?

2

Hi,

When switched to the USB-C in and what is the output resolution and refresh rate from the macbook?
How about try lowering the refresh rate to have a check, due to our device only support 3440x1440@60Hz.

3

Thanks Kevin. It is running at 3440x1440@60HZ on the Mac’s. It is the same resolution and refresh rate that is running on the PC’s.

4

Hi，

If possible and could you try get a thunderbolt 4 or USB 4 cable to have a test.
I am afraid the provided USB-C cable(USB 3.2 Gen 2) may not work well with your macbook.

5

Sure I will buy some and try them out.

6

Hi Kevin, I have tried both USB 4 and Thunderbolt 4 cables from 2 different Macbooks. In both situations I still get a flickering line that alternates across the bottom of the screen and the top of the screen. When I use either of the cables directly to the monitor from either Mac it works fine. Also, am now having issues with the USB 3.0. I have a wireless headset plugged into it and for the first couple days worked fine. Now it stops recognizing the dongle as being attached. I have to power cycle the unit to get it to recognize that it’s connected. What are suggested next steps?

7

Hi, where you bought this iDock B30 and what is your order number?
If you purchased from our website directly and please submit the RMA form and will let our customer service help to arrange new replacement for you to have a check.
If bought from Amazon and please share your order number and shipping address then I can let they help arrange it for you. Or you can share to me by email: kevin@avaccess.com

8

Ordered it direct, #38458

9

Please help submit the RMA form
Thanks a lot.