I just upgraded my OS from Ubuntu 18.04 to 20.04, and after a few weeks my shift keys stopped working, both at the same time. (I am using the caps lock key for capital letters and Onboard for special characters) I tried booting 18.04 from a thumb drive and the problem still exists. Sticky Keys are off, and all tabs are set to the United States. Is there anything else I can try?
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