keygrepping works incorrectly in Linux when screen reader is used
hello
to interact with the computer, visually impaired users use special programs called screen readers.
in Linux the Orca screen reader is usually used.
to provide some features, screen reader greps some keyboard keys and combinations (for example, all keys on the numpad block are usually remapped).
if you will run any vm (I used virt-manager for this) with screen reader enabled, and grep the keyboard, you will found that allmost all system key combinations are captured, but the screen reader's combinations are not grepped.
as a result of this, you can't use screen reader key combinations in a guest vm, and all typed letters are spoken 2 times: by the host screen reader and by the screen reader of the guest system.
I may disable host screen reader when I work in the vm, but it is very inconvenient.
the following github issue in virt-manager can give you more information, including explanation why it happens and how to fix it.