General keyboard topics, including keyboard hardware and keyboard functionality in software.

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38 views

Linux kernel dropping custom keyboard scan codes

I have a vintage IBM 122 key model M keyboard that I am adapting for use on a modern computer. I am using a Teensy 2.0 to do the encoding and to handle the USB side of things. I borrowed the firmware ...
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59 views

OS X-like deadkeys behavior on Linux

I'm on Debian (actually Crunchbang), and my notebook has a default US layout keyboard. My native language is Brazilian Portuguese (pt-BR), so I've changed my layout with setxkbmap -layout us -variant ...
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152 views

xmodmap for key combination

With Logitech K290 keyboard via USB, F. keys are not accessible by default, and I need to press Fn before using them, which is not really usable. The Fn key alone does not fire any event in xev. ...
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395 views

How to load HID kernel module from the kernel command line?

While upgrading a server from kernel 3.2.9 to kernel 3.5 I had a problem with the network (ifconfig eth0 up won't work) so I updated the system to get a newer userspace, but in the process something ...
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229 views

Keyboard triggering mouse events on Debian on Macbook

I installed Debian 6 on my Macbook in a dualboot configuration. Everything is working fine, except for the keyboard. As I'm typing, I see the mouse arrow moving a bit and strange things happen, such ...
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22 views

Remapping Left Control <LCTL> in xkb changes behavior of Alt + Left Shift

For some reason pressing any alt key (including <MENU>) together with <LFSH> toggles "Switch windows of an application". This can be turned off by commenting out key <LCTL> { [ ...
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24 views

Keep keyboard layout upon inserting external keyboard

I have a custom keyboard layout, that I enable using this commands: setxkbmap -verbose us -variant altgr-intl xmodmap -verbose /home/coub/.myxmodmap This works just fine, the thing is, that when I ...
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65 views

Alt key not recognized - Dell Inspiron n4110/Mint 16 (Petra)

I'm running a fresh install of Mint 16 on an essentially-brand-new Dell Inspiron N4110. I booted to Kali Linux initially, and noticed AltTab, AltF4, and AltD (address bar focus) weren't working in ...
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143 views

How can I set repeat rate of USB keyboard with udev?

How can I get my keyboard repeat rate to apply to a hotplugged USB keyboard? I made a udev rule to set the keyboard repeat delay and rate, /etc/udev/rules.d/99-usb-keyboard.rules with the following ...
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40 views

Alternate keyboard inputs: dwm on Debian

Currently my laptop's keyboard has some broken keys (z, x, c). When using my Windows partition I know I can just use Alt-codes to enter the keys or use alternate hotkeys for the respective keys (Alt- ...
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45 views

Detach keyboard from the kernel

I am writing a remote controller app for an octocopter and want to use a keyboard as an input device for this app but I don't want it to have any effect outside this app. Somehow I would like to make ...
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127 views

Remapping shifted function keys in XKB

I'm working on a keyboard layout for the Khmer language and I'm quickly running out of space. My aim is to create a keymap that includes all the characters in the Khmer script as well was their ...
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97 views

Xmonad seems like a (physically) painful experience

I've been using Xmonad for several hours after hearing recommendations from several people. Currently my configuration is very basic. I mapped the modifier key to the "windows key" as suggested in ...
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337 views

Logitech G110 Multimedia Keys in Linux Mint 14

I know that plenty of questions have been asked about multimedia keys, but I'm having trouble finding a solution for my specific problem. I have a Logitech G110 keyboard, which (besides the macro ...
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472 views

How to change a keycode using setkeycodes

I have a Thinkpad Edge E130 running Sabayon (a Gentoo-based distro), and I'm fighting the well-know bug Xorg 255 keycodes limit. My laptop has the Fn+F4 hotkey for Mic Mute/Unmute. This is the ...
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145 views

Netbook w/ Fedora 17 and USB Numpad at Boot Disables Internal Keyboard

I have a netbook with F17 installed. No X, just text console. The system boots fine and the internal keyboard works. I can plugin a USB numpad after boot and it functions reliably. However, if the ...
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212 views

K800 USB Wireless Keyboard - keyboard repeat rate intermittent problems

Any advice as to how to debug this: My K800 USB Wireless Keyboard's repeat rate intermittently stops working. It will start behaving erratically and when holding a key down it will either not repeat ...
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130 views

xkbcomp doesn't update keymap for running xterms?

When I use setxkbmap all programs use the new layout but when I change the keyboard layout with xkbcomp to my own only newly started programs are affected (using xkbcomp with a file with a default ...
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343 views

acpi_listen returns different result in Ubuntu than Arch Linux

Ubuntu is able to detect my Lenovo "Mic Mute" button with acpi_listen, but when I try it on Arch Linux, there is no output available. Model: Thinkpad X220 4290LY9 Tried to add acpi_osi=Linux in ...
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246 views

xkb: `ctrl:swapcaps` option messes with the escape key

I've been using setxkbmap -option "ctrl:swapcaps" to swap the capslock and left control keys, but I just recently noticed that this seems to mess up my escape key. With xev, I can see that pressing ...
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543 views

Keyboard repeat without pressing a key

Occasionally a key repeats although I do not press the key. I would like to prevent this phenomenon. The phenomenon happens when I am pressing Ctrl+w again and again. After several times of Ctrl+w, w ...
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704 views

USB keyboard won't work with usbhid driver

I have an HP thin client (model t5325) which runs Debian Linux (kernel 2.6.22.18-1-armel). We are testing some kiosk keyboards from Operator Interface Technology which are presenting themselves to ...
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917 views

Slow keyboard response in some Distros

I will be quick and clear. My keyboard is very slow in Gentoo, Debian, Ubuntu, Arch, PCLinuxOS and LinuxMint. It works fine in Mandriva, Fedora and Sabayon (Gentoo Based) It is slow even in Gentoo ...
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18 views

Keyboard is disabling

I stuck with a strange problem on OpenSUSE 13.1, after some random uptime my keyboard is disabling. I'm not even sure how to concretize this problem, this happening randomly and I can't see any ...
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27 views

Emulating scroll lock behaviour to trigger USB KVM switch

At work, I use two computers: one Windows machine for intranet and mail, one Ubuntu machine on a separate network for development. In order to easily switch between the two I use a simple USB KVM ...
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24 views

How to read characters from a serial keyboard on /dev/inputs/eventX (Speed?)

I'm trying to read from a second keyboard whose inputs can be read from /dev/inputs/eventX, but I get rubbish and not the character expected. I'm accessing my target by using Putty. I can connect to ...
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27 views

New keyboard messing up mouse

Fedora 20, xfce. I just plugged in a new keyboard, and everything appears to work. There's a backlight-toggling button in the corner. I press it. Now my mouse clicks don't want to register, or my ...
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98 views

Modifier keys cannot be mapped to regular keys on USB keyboard with udev

Using an hwdb file, /etc/udev/hwdb.d/99-keyboard.hwdb, I can remap the left Alt key on my USB keyboard as the Ctrl key: keyboard:usb:v*p* KEYBOARD_KEY_700e2=leftctrl This also works when I try to ...
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29 views

Remap input keys in /dev/input level

I want to remap input keys from keyboard and mouse, but I need it to be in low level, so that reading /dev/input* shows remapped functions. Example: I have regular keyboard and I want ENTER key to ...
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44 views

Use hardware button for onscreen keyboard

I have installed Linux Mint on a tablet computer. This computer runs the same as a PC, but it does not have a built-in keyboard. I want to use the hardware button to load the onscreen keyboard. How ...
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95 views

delete key doesn't remove selected files

In file manager or on the desktop when I select a file and hit delete key it does nothing. Shift+delete works fine, as well as deleting in text editors. I'm using Debian Wheezy 7.4 with xfce desktop ...
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26 views

AltGr key released when rappidlby pressing other keys

I have a Norwegian Lenovo USB keyboard. When I hold AltGr and press v and b rapidly, it produces “bvbv instead of “”“”“”. I get the latter, expected, result when pressing v and b slowly. Never ...
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90 views

Keyboard backlight is very dim

I have a Samsung Series 9 running Fedora. It has a backlit keyboard but even at the maximum setting, keys are not readable. The functions keys controlling the level are working, the OSD indicator ...
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155 views

udev rule for bluetooth device(logitec)

I want to write udev rule for a Logitec Bluetooth. My keyboard and mouse connect to PC as one Bluetooth device. When I monitor udev, I see there are separate events for keyboard and mouse. I want to ...
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76 views

CapsLock as modifier key for application keymaps

I am developer and currently I am using Ubuntu Linux with PyCharm IDE for development of website. In order to improve typing performance I consider change CapsLock to Hyper_L and assign it to mod3 ...
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147 views

USB Mouse and Keyboard not working in Linux 4 Tegra

I'm new to Tegra Linux development. I have a Tamontem NG Evaluation board with the Tegra 3 Chip. I installed L4T sample file system from NVIDIA Tegra resources ...
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32 views

Changing keypad settings

When I setup my Ubuntu machine, I had the option to configure the keypad style in the gnome control panel. I used to check the setting that enables windows-like behavior (Shift+Keypad does not toggle ...
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100 views

Tilde when clicking <Del> key

I am using XFCE Terminal emulator 0.4.8. My ~/.inputrc file: # Insert Key "\e[2~": paste-from-clipboard "\C-v": paste-from-clipboard "\e[A":history-search-backward "\e[B":history-search-forward ...
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342 views

Check if Keyboard and Mouse are plugged in

Is there a way to detect if a keyboard and a mouse is plugged in (and working) in Linux? This will be embedded in a PXE setup, so I only have Kernel + Modules and Busybox available. Bonus question: ...
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272 views

Caps lock delay problem

With using caps lock for word capitalization, when I type fast using my Linux distro, I get the following: CAps LOck NOt WOrking PRoperly. I tried the same keyboard on a windows machine, it works ...
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289 views

Anti-ghosting (NKRO over USB) keyboard

I've recently bought a new keyboard and was surprised to find that it didn't work in Linux. This keyboard does strange things to handle multiple key presses (ant-ghosting) over a USB interface. While ...
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319 views

Turning off gnome's Function key mapping

I recently upgraded to Fedora 18 with gnome. My function keys started to do things like open the cd player (F12) and turn the volume up (F11) and down (F10). I'd like to just pass those though to the ...
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1k views

Switching on numlock by default in Linux Mint

Whenever I boot in to Linux Mint the NumLock is switched off by default. As my username consists of some numbers, I need to switch on NumLock each time. I want it to be switched on by default each ...
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97 views

Making the keyboard eject switch work

My keyboard switch for ejecting the CDROM does not work though it displays an eject button on the screen. I need to make it work. I know ejecting a cdrom using system call is as simple as ...
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92 views

Fprintd - How to customize

I'm making a system based on web technologies, which means that my interaction with hardware is very limited (keyboard/mouse). I would like to modify/write some code/driver that makes my fingerprint ...
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28 views

Configuring Xorg lvl5 symbols

I configured Lvl3 via editing /usr/share/X11/xkb/symbols/typo. But I found no documentation, how configure lvl5. I tried to add 2 more entries in this file, like this key <AD05> { [NoSymbol, ...
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385 views

OpenSUSE - Apple Wireless Keyboard - Switch “fn” and “ctrl” key?

I'm trying to configure the Apple Keyboard so that the "fn" key and the "ctrl" key are swapped. So far I swapped the "cmd" and "alt" key, the "°" and "<" key using xmodmap. Information for that can ...
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207 views

uemacs 4.0.15 strange key bindings

Playing around with uemacs I noticed that some of the default alternative key bindings are set to the Fn key in combination with a different key (for example, an alternative for 'help' is set to ...
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700 views

Asus G53S keyboard backlight

I have troubles enabling keyboard backlight in Asus G53SW-XR1 (2.6.39-2 kernel) with modules: $ lsmod | grep asus asus_nb_wmi 12393 0 asus_wmi 18488 1 asus_nb_wmi ...
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135 views

Debian wheezy FN key inverted after resume from suspend

I have debian wheezy installed on my new laptop (Toshiba Satellite L70), with Kernel 3.14 from backports. After I resume from suspend, all function keys (F1 - F12) behaviour is inverted, for example, ...