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Trackpad working in Ubuntu 20.04 but not detected in 21.10

in flag

My Dell Inspiron trackpad worked normally in Ubuntu 20.04. But when I upgraded Ubuntu to 21.10 the cursor stuck in screen with trackpad not detected.

When I run xinput list and cat /proc/bus/input/devices the trackpad itself not listed in both result.

I tried mounting ubuntu20.04 using USB, and executed xinput which showed the trackpad in the output list.

I tried installing xserver-xorg-input-synaptics in 21.10, but no result with detecting trackpad….

David avatar
cn flag
You may want to clean up your question and title. There is no Ubuntu 20 or 21.0
guiverc avatar
cn flag
Ubuntu Core 20 is a different product to Ubuntu 20.04; so it being visible when using Ubuntu Core 20 doesn't help much. I'd also have looked at the stack used in 20.04; as if you were using the GA kernel stack; it's very different to 21.10; however if 20.04.4 was using HWE & 5.13 - it's almost the identical stack to 21.10 - you've missed specifics & are mixing details (*20 != 20.04 as different Ubuntu products*)
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