12-30-2021, 10:56 AM | #1 |
Junior Member
Join Date: Dec 2021
Posts: 5
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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 |
01-10-2022, 09:06 AM | #2 |
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Join Date: Feb 2019
Posts: 27
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Facing the same issue. I also think it's related to the latest kernel / firmware somehow. Not sure if it is a Displaylink problem at all, maybe it's connected to USB firmware.
I have only bluetooth mouse / keyboard and cannot connect my monitor directly to the laptop. Maybe to test, can you connect everything directly to your computer and see if keyboard / mouse stop working at some point? That would indicate a problem with the USB firmware itself which then kills our displaylink docks as well |
01-20-2022, 06:24 AM | #3 |
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Join Date: Feb 2019
Posts: 27
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I just remembered that i had this fix applied before. Trying it again now, either it got vanished due to some update or at least something reactivated this behavior. I think I remember that I had undone this fix after some upgrade and it was working fine since but now it started again.
Comment out this line in /etc/pulse/default.pa Code:
### Automatically suspend sinks/sources that become idle for too long # load-module module-suspend-on-idle |
01-20-2022, 06:35 AM | #4 |
Junior Member
Join Date: Feb 2019
Posts: 27
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Just got a blackout again, you can forget about this "fix" then.
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01-24-2022, 06:34 PM | #5 |
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Join Date: Dec 2021
Posts: 5
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I was hoping...
I didn't try yet to connect mouse and kboard directly to the notebook because I always forget. I will |
01-25-2022, 09:49 PM | #6 |
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Join Date: Dec 2021
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I tried to connect mouse and keyboard to the notebook instead of the docking station.
I have the same problem. There is something related to kernel that cut usb. It can't be explained in any other way. Last edited by maxmonz; 01-26-2022 at 06:32 AM. |
02-01-2022, 04:18 PM | #7 |
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Join Date: Dec 2021
Posts: 5
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Any other idea or suggestion?
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02-03-2022, 08:49 AM | #8 |
Junior Member
Join Date: Feb 2019
Posts: 27
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Maybe you can open a support ticket for it? I don't think this forum is actively monitored by the staff at all times.
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02-17-2022, 08:50 AM | #9 |
Junior Member
Join Date: Dec 2021
Posts: 5
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Problem solved. The support game me a patch for the device's firmware.
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02-18-2022, 10:55 AM | #10 |
Junior Member
Join Date: Feb 2019
Posts: 27
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Oh wow, new firmware for your docking station?
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