Thread: USB cut off
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Old 12-30-2021, 10:56 AM   #1
maxmonz
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Join Date: Dec 2021
Posts: 5
Default USB cut off

Hi,

I have a Lenovo Thinkpad T580 notebook connected to an i-Tec docking station via usb-c cable. All USB peripherals (mouse, keyboard, etc.) and 2 monitors (HDMI) are connected to the docking station.
I used DisplayLink driver to make everything working fine until the version 5.4.0.89 of Linux kernel.
With version 5.4.0.90 and the latest 5.4.0.91 a strange situation occurs. Occasionally the monitors darken and even the mouse does not respond. From in-depth analysis it seems that there is a problem on the USB bus for which the devices are disconnected for a few seconds until everything starts working again.
It is definitely a problem related to the new kernels because everything was fine with the previous ones.
Anyone have an idea and can help me?
Thanks
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