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

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0answers
97 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 ...
4
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0answers
428 views

xmodmap for key combination - how to toggle the Fn behavior?

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. ...
3
votes
3answers
405 views

Remapping a keyboard key to print ⸮ (irony mark)

I find myself using the irony mark ⸮ unicode U+2E2E (or ؟ unicode U+061F) in both mcabber and vim a lot. The old copy-and-paste antipattern is tedious so I thought I would rename one of the many ...
3
votes
2answers
3k views

How do you force Linux to detect a PS/2 device (e.g. mouse) on demand?

I plugged in a PS/2 mouse while inside my Gnome desktop, but Linux doesn't recognize it. Linux will only recognize the PS/2 mouse if it is plugged in before booting the machine (like a normal ...
3
votes
2answers
31 views

disable insert key for all but one applications

I would like to disable the insert key on my keyboard, because I often hit it accidentaly when typing, and it messes up my text. I found I can use xmodmap to disable insert key completely: xmodmap -...
3
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1answer
6k views

How to change keyboard keymap

I accidentally set my keyboard type to US during installation, but it actually is UK type. How do I change it? [note] I use Debian Squeeze.
3
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1answer
77 views

Does SSH access trigger keyboard interrupts?

So, I've been studying the basics for my LPIC-1, and I have a question about /proc/interrupts When consoled into a server, I can see key logging occurring (cat /proc/interrupts | grep i8042 count for ...
3
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2answers
112 views

Latin characters on Mint - Alt key like Windows

How can I use Latin characters on Linux Mint? I've tried the alt key like on Windows but it doesn't work. I've searched and they say that alt doesn't work on Linux like on Windows. I've tried other ...
3
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2answers
1k views

How do I select text from terminal by using keyboard only?

I used to select text via mouse click+drag but I want to know if I can do the same thing via the keyboard only? I am talking about selecting text with the help of the keyboard on gnome-terminal, etc.
3
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2answers
333 views

Multi-function CapsLock without X

I would like to remap CapsLock to Esc when pressed by itself and Ctrl when pressed with another key without using X. This is similar to a previous question ( Remap CapsLock to Escape and Control ...
3
votes
1answer
72 views

How to make a comprehensive set of possibilities for defining GNU-screen “command characters”?

I want to somehow generate a comprehensive "menu" of all possible ways to set up the GNU-screen "command characters" for a standard, off-the-shelf "US keyboard" and a specific terminal emulator, say ...
3
votes
1answer
2k views

How to detect global key presses

I have an Asus laptop that has a special key that can be configured to launch any software (at least on Windows). The general question is: how can I detect any key press (globally)? Then, how ...
3
votes
1answer
518 views

How to display the current keyboard layout?

Is there a utility that allows to graphically display the current keyboard layout? This can be useful, for example, when writing in a foreign language and having the physical keyboard only ...
3
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3answers
2k views

Ubuntu 12.04 Gnome 3 “freezes” randomly - not a normal freeze though

Since upgrading to 12.04, I've randomly experienced this strange phenomenon where my mouse mostly doesn't work and keyboard mostly does. I have not been able to identify a cause for this. Sometimes it ...
3
votes
2answers
2k views

Fix keyboard chattering/bouncing on the software side

I have a mechanical keyboard (Noppoo Choc Mini with Cherry MX Blue switches) and after a few weeks, some key presses are getting sent two times even though I press a single time. I found out that this ...
3
votes
2answers
764 views

The key codes for Caps Lock, Shift, Left Control and FN key?

Can somebody please provide the key codes for these keys: Caps Lock Left Shift Left Control Option key FN The key code I'm talking about is something along the lines of \<Esc>[200~, although ...
3
votes
1answer
2k views

Control and up/down keys in terminal for use by emacs

Is it possible to use C-up and C-down when running emacs in the terminal window (when starting emacs from the command line with the -nw flag)? What should my terminal send when I press C-up and C-down ...
3
votes
1answer
1k views

Unix User Level Keylogger

I need to record my own keystroke data for some academic research. I wrote a regular keylogger for Windows, but now I need to write one for a Unix environment, with the constraint that I have only ...
3
votes
1answer
1k views

sysrq won't reboot with a keystroke, but will with echo “b” > /proc/sysrq-trigger

CentOS 6.2, 2.6.32-220.el6.x86_64 laptop. SysRQ is enabled for keyboard input, as is witnessed by: $ cat /proc/sys/kernel/sysrq 1 Common Magic SysRQ Keys are working such as alt-sysrq-h. However, ...
3
votes
4answers
2k views

Matlab gets “crazy” after type special characters

I'm using a computer running Ubuntu and I'm connected through ssh to a RedHat machine where I use Matlab in command line mode (matlab -nodesktop). Matlab version is 7.10.0.499 (R2010a). My problem ...
3
votes
1answer
1k views

The caps lock and scroll lock lights are flashing and everything is frozen

I was using a small Linux distro that was running X11 with JWM as its window manager. I was browsing a directory when all of a sudden the mouse froze and the keyboard became unresponsive. The caps ...
3
votes
1answer
136 views

Can't enter capital letters using shift key

In some applications entering capital letters works like hitting ESC key. Reproducing: Open LibreOffice document Select "Save as" (Unity dialog) Hit "Create folder" Enter a capital letter using ...
3
votes
1answer
167 views

Is (wayland's) libinput something new, i.e., not related to X.Org server?

Having read http://www.freedesktop.org/wiki/Software/libinput/ which states libinput is a library to handle input devices in Wayland compositors and to provide a generic X.Org input driver. It ...
3
votes
2answers
627 views

How does an emulated keyboard work?

I have read that some USB devices emulate a keyboard and the information these devices send will be as if the information was typed on a keyboard. For example: a magnetic card reader can use an ...
3
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1answer
253 views

How to regain control of my computer?

I am running a database server on my computer. Sometimes it takes up so much memory resources that the system stop responding to keyboard and mouse inputs. Although I can move the mouse pointer and ...
3
votes
2answers
795 views

How do I disable the left CTRL on Ubuntu 13.10?

How do I disable the left CTRL on Ubuntu 13.10? Actually I can do it already. All I need to run is xmodmap -e "keycode 37 = " The problem I have is this only works if I run it from the terminal ...
3
votes
1answer
2k views

How to permanently disable the Insert key on Linux?

The Insert is located right next to Backspace. So when I am using Leafpad, Gedit, etc., I hit Insert by accident often, which causes the cursor to turn into a bold box which over-writes text as I type....
3
votes
2answers
1k views

Setting repeat rate of USB keyboard automatically

I often connect a USB keyboard to my laptop, and when I plug it in, the default repeat rate is not what I want. I tried changing it using a udev script by adding a rule `ACTION=="add", ATTRS{name}=="...
3
votes
1answer
856 views

Keyboard input not displayed on the screen?

We use the `exceed tool to connect to our UNIX servers, but sometimes the command-line behaves erratically. When I am typing some command on the command-line, nothing happens -- nothing is displayed ...
3
votes
1answer
3k views

How to change the USB keyboard layout in an OpenBSD console?

I may be abusing the word console but I mean the mode without X i.e. pressing ^+Alt F1 and then log as other user where I want to use my chosen layout with USB keyboard. X works, it configures the ...
3
votes
2answers
658 views

Why does US International Keyboard break Alt_R

All adding the U.S. English International (with dead keys) keyboard layout breaks my Alt_R key. Any ideas why? I'm working on RHEL 5.5 using GNOME. The problem disappears if I remove the additional ...
3
votes
1answer
93 views

Keep NumLock always on [Linux Mint]

I have a simple objective: Keep NumLock always on OS and DE: Linux Mint 17.3 Cinnamon I found this Keep NumLock always on So, I created this small script -rwxr--r-- 1 root root 47 Apr ...
3
votes
1answer
44 views

Key used in shortcut. How to unmap?

I'm having some trouble pressing the ` key (I had to copy/paste it here) on my Ubuntu. It acts like a weird tab or Esc now. When checking with xkbevd, I get ^[ How can I reset this and get the ...
3
votes
1answer
303 views

Reading keypresses in shell using trap and Unix signals

I am having trouble understanding the purpose of trap and the multiple stty invocations in the snippet below. I was hoping someone could give me a rundown of what is happening. getkey() { local ...
3
votes
2answers
568 views

Execute script after period of inactivity

I'm looking for a way to execute certain script after period of inactivity and after completion of that period. By 'inactivity' I mean lack of mouse and keyboard events. E.g. I want: execute first ...
3
votes
1answer
750 views

How to remap the keys with xkeycaps?

I'm trying to remap different keys (for example, I want the "Y" to be "space"). XKeyCaps let me choose the keyboard, and shows correctly when one key is pressed. But the right click menu that allows ...
3
votes
4answers
6k views

USB keyboard doesn't work with Debian installer

I have a wired USB keyboard. I've written the latest netinstall Wheezy image on my USB pendrive (using dd). It boots but the installer doesn't recognize the keyboard! (The same pendrive works on my ...
3
votes
1answer
347 views

Since I execute 'stty erase ~' I can't type / anymore in Putty

Yesterday I was fed up with being forced to type Caps+Backspace to erase character in Putty, because a Backspace was printing a ~. I found some info on internet saying you should type stty erase ~, or ...
3
votes
1answer
761 views

How to get the actual keyboard device given the output of /proc/bus/input/devices?

When I run: cat /proc/bus/input/devices ...I receive the following output: ... I: Bus=0003 Vendor=040b Product=2000 Version=0110 N: Name="Generic USB Keyboard" P: Phys=usb-0000:00:1d.0-1/input0 S:...
3
votes
1answer
971 views

Laptop keyboard occasionally stops working

I have a dirty solution that is to plug a USB keyboard in and execute the following command: setxkbmap -rules evdev -layout us -model evdev Afterward my keyboard will work. This solution only ...
3
votes
1answer
120 views

How to clear keybinding

I'm in Linux (if it's relevant: Fedora 17 x86_64, 3.6.11) and my laptop's PageUp key has gone ultrasensitive on me. I'd like to disable it (remap it to nothing at all) as I've never liked it where it ...
3
votes
1answer
753 views

Getting keyboard to work in debian 6.0 in order to unlock root partition

I just installed Debian 6.0, encrypted / and now I'm trying to boot. When GRUB comes up, I select Debian, it loads the initrd and asks for the root password, however I can't enter anything, because ...
3
votes
1answer
169 views

How to use the Meta/Alt Key with tput?

I want to redefine keybindings for the commandline of a lisp dialect. The commandline is actually modeled after Vi and implemented with tput/terminfo. I want an alternative version with Emacs ...
3
votes
1answer
4k views

Backspace, del, arrow keys not working with interactive programs in Tilda

I currently run Openbox on a light netinstall of Debian. In Tilda, when I use a program like nslookup or winexe, some of my keys do not work properly. Backspace generates ^? Up generates ^[[A ...
3
votes
1answer
2k views

Why does the setxkbmap compose key mess with other keys?

I just found a tip to set the compose key manually: setxkbmap -option compose:caps Unfortunately, after running this several keypresses act as if the compose key had been pressed. For example, to ...
3
votes
2answers
2k views

What does this output from xev mean?

I'm interested in remapping some keys on my keyboard. In particular, I want to hold down the Function key, press the F1 key, and have this trigger a script. I know that xev is useful for figuring out ...
3
votes
2answers
808 views

Uppercase input turns on periodically

I have some problem. Every 3-5 second everything, that I input from keyboard became UPPERCASE only. I also have two keyboard layouts: us and ua. And when uppercase happens - I can't switch my keyboard ...
3
votes
1answer
4k views

Keyboard Problem with Debian testing and gdm3

I'm driving a Debian testing machine that is running fine. But since testing includes Linux Kernel 3 I have the following problem: While booting all is working (I mean especially the keyboard) - ...
3
votes
1answer
3k views

PS/2 Keyboard & Mouse not working AFTER boot

My CPU is 64 bit, I have a PS/2 keyboard and a PS/2 mouse and I have tried Live CDs of Ubuntu, Kubuntu, Fedora, Arch Linux, Wubi installations, 32 and 64 bit (my CPU is 64 bit) and Puppy Linux. I am ...
3
votes
1answer
1k views

Keyboard (mostly) doesn't work in Wine

When I run any program in wine (e.g. notepad), I can use the keyboard just fine until I click the mouse. As soon as I click the mouse for any reason, the keyboard stops working entirely. I'm using ...