Re: Some keyboard shortcuts do not work
Reply #3 –
... press and release each <Shift>, <Ctrl> and <Alt> key at least twice without pressing any other keys.
I.E.
<Left-Shift>, <Left-Shift>, <Right-Shift>, <Right-Shift>,
<Left-Ctrl>, <Left-Ctrl>, <Right-Ctrl>, <Right-Ctrl>,
<Left-Alt>, <Left-Alt>, <Right-Alt>, <Right-Alt>
...