I can confirm that this goes away under 20.04 with the HWE stack (kernel
5.8+)
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https://bugs.launchpad.net/bugs/1880365
Title:
Dell Vostro 5391 trackpad loses functionality aft
OK. I'm running Ubuntu under Wayland now, and after the laptop wakes up,
the mouse cursor tracks -really- quickly on the trackpad and I lose
multitouch and right-click. I can still mouse-around and click, but no
more context menus or two-finger scrolling. A restart fixes it. I guess
it runs deeper
Public bug reported:
On 18.04 and 19.10, the Dell Vostro 5391 would lose the trackpad cursor
control completely, manifesting as a frozen cursor. On 20.04, it comes
back from sleep as a regular mouse, but tracks motion differently and
doesn't recognize any normal gestures or the right-click. Pluggi
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