evdev Multimedia keys I have an IBM enhanced performance USB keyboard (or one very similar). It has a set of multimedia keys: stop, play/pause, back, forward, volume-, volume+, a musical note (launch media player?), and mute. Those were working with the kbd driver, but aren't now that I've switched to evdev. (By working I mean xev reported them. I never set up xmodmap to use them, but I presume they would have worked had I bothered.) There are also a set of application keys that didn't return anything at all in xev. They do create output with showkeys -k. All of the multimedia keys seem to be on /dev/input/event4, with the normal keys being on event3. Code: I: Bus=0003 Vendor=04b3 Product=301b Version=0110 N: Name="Lite-On Technology USB Productivity Option Keyboard( has the hub in # 1 )" P: Phys=usb-0000:00:1d.0-1.1/input0 S: Sysfs=/class/input/input3 U: Uniq= H: Handlers=kbd event3 B: EV=120013 B: KEY=1000000000007 ff9f207ac14057ff febeffdfffefffff fffffffffffffffe B: MSC=10 B: LED=1f I: Bus=0003 Vendor=04b3 Product=301b Version=0110 N: Name="Lite-On Technology USB Productivity Option Keyboard( has the hub in # 1 )" P: Phys=usb-0000:00:1d.0-1.1/input1 S: Sysfs=/class/input/input4 U: Uniq= H: Handlers=kbd event4 B: EV=13 B: KEY=ff 2000000 3878d8000001 e000000000000 0 B: MSC=10 I can only assume something is messed up with my evdev configuration, but I don't know what. The two InputDevices sections are as follows: Code: Section "InputDevice" # generated from default Identifier "Keyboard0" Driver "evdev" Option "Device" "/dev/input/event3" EndSection Section "InputDevice" Identifier "Keyboard1" Driver "evdev" Option "Device" "/dev/input/event4" EndSection I figured such a setup would simply accept every event from the two event interfaces, but apparently not. I know event4 emits something when I hit the multimedia keys - cat /dev/input/event4 shows predictable patterns of characters depending on the key I hit. X just isn't understanding those messages. Any hints on fixing my evdev configuration to work with my multimedia keys would be awesome. I can get the output from showkeys -k, if that would be helpful.

10-28-2008, 04:42 AM

cladisch

Member

Registered: Oct 2008

Location: Earth

Distribution: Slamd64

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Quote:

Originally Posted by PaladinOfKaos

Code:

Section "InputDevice"

    # generated from default
    Identifier     "Keyboard0"
    Driver         "evdev"
    Option         "Device" "/dev/input/event3"
EndSection

Section "InputDevice"
    Identifier     "Keyboard1"
    Driver         "evdev"
    Option         "Device" "/dev/input/event4"
EndSection

I figured such a setup would simply accept every event from the two event interfaces, but apparently not.

Do you have configured both keyboard devices to generate core events?

Something like this:

Code:

Section "ServerLayout"
    ...
    InputDevice "Keyboard0" "CoreKeyboard"
    InputDevice "Keyboard1" "SendCoreEvents"

[linuxkernelnewbies] evdev Multimedia keys - LinuxQuestions.org

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