DisplayLink device no longer detected on Kubuntu 20.04 with kernel 5.4.0-80

bpiper · 07-22-2021, 10:59 PM

I have an HP USB-C Universal Dock that was previously working fine on kernel 5.4.0-77, but basically lost its DisplayLink functionality after I booted on 5.4.0-80 for the first time yesterday. Essentially it's no longer detecting the USB DisplayLink device (with vendor id 17e9) when the dock is plugged in. I tried a bunch of things, including reverting from the 5.4 DisplayLink driver back to 5.3, but the only solution that worked was booting the previous kernel version (5.4.0-77), so it seems that some kernel change has caused the issue.

Just posting this in case it helps others or a developer is able to comment.

07-22-2021, 10:59 PM	#1
bpiper Junior Member Join Date: Jul 2021 Posts: 1	DisplayLink device no longer detected on Kubuntu 20.04 with kernel 5.4.0-80 I have an HP USB-C Universal Dock that was previously working fine on kernel 5.4.0-77, but basically lost its DisplayLink functionality after I booted on 5.4.0-80 for the first time yesterday. Essentially it's no longer detecting the USB DisplayLink device (with vendor id 17e9) when the dock is plugged in. I tried a bunch of things, including reverting from the 5.4 DisplayLink driver back to 5.3, but the only solution that worked was booting the previous kernel version (5.4.0-77), so it seems that some kernel change has caused the issue. Just posting this in case it helps others or a developer is able to comment.

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