About once a week, my <SHIFT>, <CAPSLOCK>, and <CONTROL> keys stop working. This is an Ubuntu issue, not a hardware issue. This issue has been recurring through several point releases of Ubuntu.

I was rebooting every time this issue occurred; that was a serious annoyance. Now, however, I have a much better fix.

The command `setxkbmap` resets the keyboard map and resolves the issue without a reboot.

I hope that this bug is eventually found and fixed, but now it’s reduced from a major annoyance to a very minor issue.

Ubuntu is still a lot less buggy than Microsoft Windows.