6. I have a MacBook Pro (2015), and an iPhone 7 Plus. The problem is the following: If the iPhone is connected to my Mac, then whenever I run an app via XCode, or the Mac is just transferring data, the iPhone starts disconnecting and connecting (the battery icon indicates it), and the data transfer fails. First I thought that this was a cable
U4919DW, KVM, USB hub device disconnect issues. I have a new U4919DW monitor that is replacing a previous U3417W. The monitor is connected to my Surface Laptop 3 via USB-C connection. I have several peripheral devices hooked up to the monitor's USB ports so that I can leverage the built-in KVM/USB hub, including a Logitech Webcam, Plantronics RESOLVED - finally found the solution. For anyone else with this issue disabling the following settings should work: Go to Device Manager, network adapters and find the ethernet one. - right click for properties - advanced. Disable Energy efficient ethernet (and or green energy) and Wake on magic packet. If your keyboard and mouse are USB, first program the power button to effect the needed restart after Rolling back or uninstalling the driver. Go to Settings > System > Power & Sleep > Additional Power Settings > Choose what Power buttons do to choose Shutdown. Finally open the USB controller drivers, from Driver tab choose Update Driver, then
After that I tried buying a powered USB hub, thinking maybe power delivery through the USB might not be enough and same thing happens. My last attempt was installing Ubuntu into my main PC and that worked perfectly, I was able to stream my discord screen without the keyboard disconnecting, so the one variable left is windows drivers.
Thanks for the help so far! this video should be slow and simple enough for most people to understand: VERY important to NOT unplug power, turn on the computer or remove the USB at ANY time during the BIOS update. Its only when the led stops blinking that you can unplug everything and boot it up. SamClan.

Open up device manager (Start > Run > devmgmt.msc) - scroll down to Universal Serial Bus controllers and expand it by clicking the arrow to the left. Scroll down to "USB Root Hub (USB 3.0)," you may have more than one entry depending on how many USB 3.0 ports you have. Right-click it, go to properties, then click the Power Management tab.

I will list the most probable causes to my knowledge: (1) Pure software: Linux driver is not handling the 1.1 port correctly for this chipset. This will be the most possible cause. (2) Partial hardware: USB port are sensitive to static and can degrade/die over time, especially for older motherboard and chipset.

Go to Start > Control Panel > System and Security > Power Options. Click on the " Change plan settings " of your plan, and then click on " Advanced settings ." In Advanced settings find " USB settings " > " USB selective suspend setting ," and choose " Disable " in the setting. Click on "Apply" when done.

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    • laptop usb port keeps disconnecting