This issue is similar to the un-answered seen here:
But I can say that the physical keyboard is not the problem
(Even bought the exact same make/model as I previous had - as the old was getting "nasty", and I thought that maybe was the cause)
But no, the "shift + m" will not produce anything
(neither left nor right shift)
With 'Caps Lock' on, the M key works, but also pressing shift will then not make lower case m (nothing shown).
The keyboard works fine on Windows 10
The OS-language is US-English, and I've tried (to no avail) with keyboard in US-English, Danish or Norwegian
(none of the three has "shift + m" working)
OS: Zorin OS 16.1 x86_64
Host: Akoya P4130 D MD8302/2471 1.0
sudo lshw -short|nl #"relevant excerpt"
1 H/W path Device Class Description 2 ========================================================= 3 system Akoya P4130 D MD8302/2471 (ML-110000 10021220)
24 /0/100/10.1/0/2/3 input Wired Keyboard 600
sudo hwinfo --short|nl #"relevant excerpt"
7 /dev/input/event4 Microsoft Wired Keyboard 600 (model 1576)
95 /dev/input/event5 Microsoft Wired Keyboard 600 (model 1576)