mouse and keyboard not working on Ubuntu 20.04

I’m sorry I’m new to Ubuntu so I’ll try be as descriptive as possible.
At the moment my mouse is working when plugged into a specific USB port on the back of my PC. However when I move it to another port it doesn’t work. If I plug my keyboard into this same USB port then the keyboard will work and the mouse won’t. I have my system on a dual boot at the moment and I know for a fact that both the mouse and keyboard do work, it’s only when I reach the login screen that I have issues with my keyboard/mouse. I have tried other solutions given on this site and elsewhere but they don’t seem to work.
Like I said I’m new to Ubuntu and Linux as a whole so I’m sorry if this is an obvious question.

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Author: Alexander Hunter

alt keys broken after upgrading from ubunutu 18.04 to 20.04

I recently upgraded to 20.04 LTS from 18.04 LTS and now both my left and right alt keys are not working when I try to use them for any keyboard shortcuts. I had no issues before upgrading. My keyboard is mapping hasn’t changed since the update (Macintosh UK).

Any help would be appreciated. Thanks in advance.

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Author: barnsley92

External Keyboard ‘d’ key causes any window to go out of control and OS to freeze

I have a Jellycomb external keyboard which I’m trying to use on my MSI GS65 running Ubuntu. It was working fine with my old laptop also running Ubuntu (Razer Blade), but for some reason it acts weird now. In particular, the ‘d’ causes any active window (like the browser window or a terminal) to start resizing uncontrollably, and then my OS will just freeze and I’ll have to restart my laptop. This doesn’t always happen, but it happens quite often. For example, I’m typing this using my external keyboard, and I’ve typed ‘d’ a couple of times, and nothing happened. I’m presuming this is because I’m in a “text typing” area so the window that’s currently active, my browser, isn’t interpreting the ‘d’ as a signal to it). However, another key acts weird here, the space bar, but not always. It sometimes resizes my window, but not uncontrollably like the ‘d’ key. What can I do to fix this?

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Author: An Ignorant Wanderer