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My (capacitive) media keys have recently become autonomous, causing my wifi to switch on and off at random intervals and effectively rendering the machine unusable.

How can I disable those keys? My preferred solution is to simply disable or misconfigure the daemon that intercepts the XF86WLAN and XF86Bluetooth keyboard events. I can't seem to figure out though which daemon is currently responsible for this, so some help is appreciated.

I'm running Debian Wheezy with a default GNOME 3 setup.

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1 Answer 1

Since this is a keyboard malfunction, I'd favor blocking the keys at the keyboard level.

A simple way to do this is to reassign the keys to do nothing. You can do it with the following shell snippet:

#!/bin/sh
xmodmap - <<EOF
keysym XF86WLAN = NoSymbol
keysym XF86Bluetooth = NoSymbol
EOF

Write this script to a file, make it executable (chmod +x /path/to/script) and add it to your Gnome startup applications.

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Hi Gilles, thanks, that's a useful suggestion. Unfortunately it does not seem to solve the problem and I fail to understand why. After the suggested xmodmap command I tested with xev and found: KeyPress event, (...) keycode 245 (keysym 0x0, NoSymbol) (...). Yet bluetooth switches off like before. I am starting to believe that the button switches the hardware directly but I am unsure how to verify that. Any further suggestions are welcome! –  gertjan Jun 4 '12 at 7:48
1  
@gertjan Oh. Then this button might be controlled by ACPI. Come to think of it, I usually see these functions controlled by ACPI, unlike things like volume controls which are often keys. That's not a subsystem I'm familiar with. I've made a small edit to your question to try to draw in the right crowd. –  Gilles Jun 4 '12 at 22:49

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