On 9/1/20 11:21 AM, Bob Goodwin wrote:
°
I have an old Dell E4310 Latitude portable I've installed Fedora 32 on.
it works but I would like to run it with an external keyboard,
monitor,and track ball. Those things mostly workexcept that it wants to
run the external monitor at the display settings for the little 14"
screen. In order to fix that problem I want to be able to operate a
toggle display function that uses "Fn + F8" and there is no Fn key on
the standard keyboard. Xev shows nothing for the Fn key on the portable.
I thought I would just remap the external keyboard but I have no idea
what to do to change that. I found a suggestion googling to use the key
to the right of delete, that does not work.
Does anyone know how to produce "Fn" from a standard desktop keyboard?
The Fn key by itself does nothing. It just changes the code sent by the
keyboard when the F8 (or whatever) key is pressed. The tricky bit is
that sometimes it's not a key that gets sent, it might be an ACPI or WMI
message (I think those are the correct acronyms). But there is also a
standard key code for monitor switching which you could map to some
other key on the external keyboard. I'm using Wayland, so xev doesn't
work for me. However, using evtest, the kernel keycode is
"KEY_SWITCHVIDEOMODE" and I think that translates to something like
"XF86VidMode" in X.
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