Carbon X1 - different problems on USB 2.0 & 3.0 since windows 8.1 OS update last wk

[jjarz]

I am using Carbon X1 old generation (2013) with the Lenovo USB 3.0 dock.

Windows OS has an auto update last week (Wed?) I did a reboot Friday and since then have had two problems:

2.0 usb port (which i've always used): after 15 minutes of use the monitors get dropped. I unplug/reconnect and it sometimes works, sometimes doesn't. May require a reboot then works again for 15 minutes.

3.0 usb port (just started using since the problem): works fine for 15 minutes then the mouse gets dropped. I have since connected a mouse to the usb 2.0 CPU (vs one on the front of the dock); hasn't dropped in the last 10 minutes or so (fingers crossed).

Each time i connect the dock i hear the 4 tone Windows system alert to indicate the peripherals are being recognized. When the monitors (or mouse or dropped) i heard the 3 tone alert indicating they've been removed.

I've uninstalled and reinstalled the DisplayLink 8.1 udpdate. I've updated the DisplayLink firmware. I tried going to safe mode & removing the Displaylink program but i receive an error prompt (apparently Displaylinks installer app can't run in safe mode).

Out of ideas - please help...