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  • How do I set my bluetooth keyboard's layout setting?

    - by user29215
    I have upgraded to 11.10 and I have a HP Mini 2140 with a swiss layout keyboard. I could set that on the system setting and for the keyboard I have no problems. But I also use a Logitech DiNovo Edge bluetooth keyboard when I'm at home, and there is no way to set it in the right layout (the french swiss one). How can I correct that? It's very strange because when I connect my Logitech keyboard is set on the American layout, but the one of the PC is still on the swiss french layout.

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  • Why the Enter key in a Mac keyboard is mapped to Level?

    - by Anentropic
    Just installing Ubuntu for the first time, glad to ditch Win 7. I have a KVM switch and also a Mac, hence I'm using a Mac keyboard (the full size alu one) Everything's pretty cool. First thing I wondered is why the numeric keypad doesn't work? Oh, I have to find the num lock key (which should default to on, sensibly, no?) which isn't labelled as such on a Mac keyboard. Ok no problem. Then for some reason the Enter key on the keypad doesn't work still. Check the keyboard layout (set to 'English UK Macintosh')... inspecting the layout the Enter key is mapped to something called 'Level' - WTF is 'Level'? Everything else about the keyboard works great ie the £ $ # @ " are all perfect, volume control works as expected... why this weird key mapping on the Enter key? More importantly... how do I change it to work as an Enter key ?

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  • Physical effects of long term keyboard use- what does the science say and what factors affect it?

    - by glenatron
    This question asks about the ergonomics of a particular keyboard for long programming hours, what I would like to know is about the ergonomics of using a keyboard in general. What are the most significant risks associated with it and how can they best be mitigated? Do the "ergonomic" keyboard designs make a difference and if so which design is most effective? If not do other factors such as wrist-rests, regular exercise or having a suitable height of chair or desk make a difference? Do you have any direct experience of problems deriving from keyboard use and if so how did you resolve them? Is there any good science on this and if so what does it indicate? Edited to add: Wikipedia suggests that there are no proven advantages to "ergonomic" keyboards, but their citation seems pretty old- is that still the current state of play?

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  • Can anyone recommend a chorded keyboard for a programmer?

    - by Tom Wright
    Pre-emptive strike: It's subjective, but it's also Friday... ;) Inspired by this great question and related to this great question, I have decided to buy a chorded keyboard. (A chorded keyboard, by the way, is one with a reduced number of keys, that must be pressed together, in chords, to give all the possible characters etc. - see wikipedia) Being a programmer means that the keys I use regularly are likely different to a regular Joe (a lot more semi-colons for a start), so I was wondering if any of my fellow programmers had tested a chorded keyboard for use on the battlefield of code? Being a nerd, I'm also interested in the extent to which I'd be able to customise my chorded keyboard. (Macros? Shortcuts?) Edit I'm beginning to suspect that no-one has heard of these, let alone tried one. So we're all talking about the same thing, here's an example: Twiddler 2.1

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  • How can I manage keyboard shortcuts in 11.10 Oneric?

    - by Mike
    In 10.04, I've had a keyboard shortcut defined via it's keyboard settings applet. Recently I have upgraded to 11.10 (I use gnome-classic). This shortcut still works, but I can't find it in System Setting's Keyboard applet. This means I don't know how to disable it. Not that it bothers me too much (now, at least), but not being able to control my own computer doesn't seem very pleasant. Where does Ubuntu store my keyboard shortcuts? BTW, I do not use compiz, and I can't find my shortcut in gconf either.

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  • In 14.04, how do I print the current keyboard layout?

    - by user1951615
    I have several keyboard entry languages set up, and can easily select the one I want to use from the indicator menu. Once a language is chosen, the menu item "Keyboard Layout Chart" shows me what key generates what. How do I print the keyboard layout chart in Ubuntu 14.04? There is no Print button on the chart and there is no menu associated with the layout chart window. Perhaps this is a but in 14.04?

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  • function's return address is different from its supposed value, buffer overflow,

    - by ultrajohn
    Good day everyone! I’m trying to understand how buffer overflow works. I’m doing this for my project in a computer security course I’m taking. Right now, I’m in the process of determining the address of the function’s return address which I’m supposed to change to perform a buffer overflow attack. I’ve written a simple program based from an example I’ve read in the internet. What this program does is it creates an integer pointer that will be made to point to the address of the function return address in the stack. To do this, (granted I understand how a function/program variables get organized in the stack), I add 8 to the buffer variable’ address and set it as the value of ret. I’m not doing anything here that would change the address contained in the location of func’s return address. here's the program: Output of the program when gets excecuted: As you can see, I’m printing the address of the variables buffer and ret. I’ve added an additional statement printing the value of the ret variable (supposed location of func return address, so this should print the address of the next instruction which will get executed after func returns from execution). Here is the dump which shows the supposed address of the instruction to be executed after func returns. (Underlined in green) As you can see, that value is way different from the value printed contained in the variable ret. My question is, why are they different? (of course in the assumption that what I’ve done are all right). Else, what have I done wrong? Is my understanding of the program’s runtime stack wrong? Please, help me understand this. My project is due nextweek and I’ve barely touched it yet. I’m sorry if I’m being demanding, I badly need your help.

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  • keyboard mappings are totally screwed after updating to kde4

    - by zeonglow
    I recently upgraded from KDE 3.5 to KDE 4, and I have been having weird issues with my keyboard. In one of the virtual consoles e.g. when I press ctrl + alt 1 , I can type perfectly, but in KDE, several of the number keys don't work, the left and right arrows don't work either. When I press the right arrow key in xev I get this: KeyRelease event, serial 34, synthetic NO, window 0x3600001, root 0x6f, subw 0x0, time 903459, (111,55), root:(115,836), state 0x10, keycode 114 (keysym 0x1008ff11, XF86AudioLowerVolume), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False When I press the '3' key it toggles my Bookmarks toolbar in Firefox, in xev I get this: KeyPress event, serial 34, synthetic NO, window 0x3600001, root 0x6f, subw 0x0, time 999968, (94,115), root:(98,896), state 0x10, keycode 12 (keysym 0x1008ff30, XF86Favorites), same_screen YES, XLookupString gives 0 bytes: XmbLookupString gives 0 bytes: XFilterEvent returns: False KeyRelease event, serial 34, synthetic NO, window 0x3600001, root 0x6f, subw 0x0, time 1000032, (94,115), root:(98,896), state 0x10, keycode 12 (keysym 0x1008ff30, XF86Favorites), same_screen YES, XLookupString gives 0 bytes: XFilterEvent returns: False As this is deeper down, changing the type of keyboard in the KDE meun's has no effect. I'm slowly beginning to wade through the mountains of documentation about the X keyboard model, but there has to be a better way. Does anyone no what it is? Edit: 1234567890 ! after deleting the entire .kde folder. but only until I change the Keyboard settings from the "system settings" applet, then its hosed full time. Regardless of what I set the settings too. (restore to default settings doesn't) 2nd Edit: I'm using Gentoo AMD64, I was upgrading from KDE 3.5 KDE 4.2. I think I had manual settings before, although I didn't change anything. I was originally running KDE without HAL until that stop working a year or so ago. The only customisation I made was to set the multimedia keys to control Amarok. 3rd Edit $ grep xkb /var/log/Xorg.0.log (**) Option "xkb_rules" "evdev" (**) Option "xkb_model" "evdev" (**) Option "xkb_layout" "us" (**) Option "xkb_rules" "evdev" (**) Option "xkb_model" "evdev" (**) Option "xkb_layout" "us" Xorg.0.log has this to say: (WW) AllowEmptyInput is on, devices using drivers 'kbd', 'mouse' or 'vmmouse' will be disabled. (WW) Disabling Mouse1 (WW) Disabling Keyboard1 My Xorg.conf has this in it. Identifier "Keyboard1" Driver "kbd" Option "AutoRepeat" "500 30" # Specify which keyboard LEDs can be user-controlled (eg, with xset(1)) Option "XkbRules" "xorg" Option "XkbModel" "pc105" Option "XkbLayout" "gb"

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  • C# Application crashes with Buffer Overrun in deployed (.exe) version, but not in Visual Studio

    - by Ben
    Hi, I have a c# Windows Forms application that runs perfectly from within Visual Studio, but crashes when its deployed and run from the .exe. It crashes with a Buffer Overrun error...and its pretty clear that this error is not being thrown from within my code. Instead, windows must be detecting some sort of buffer overrun and shutting down the application from the outside. I don't think there's one specific line of code that is causing it..it simply happens intermittently. Does anybody have any thoughts on what the possible causes of a Buffer Overrun error might be, and why it would only occur in the deployed application and not when run from with Visual Studio? Thanks in advance, Ben

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  • Buffer management for socket application best practice

    - by Poni
    Having a Windows IOCP app............ I understand that for async i/o operation (on network) the buffer must remain valid for the duration of the send/read operation. So for each connection I have one buffer for the reading. For sending I use buffers to which I copy the data to be sent. When the sending operation completes I release the buffer so it can be reused. So far it's nice and not of a big issue. What remains unclear is how do you guys do this? Another thing is that even when having things this way, I mean multi-buffers, the receiver side might be flooded (talking from experience) with data. Even setting SO_RCVBUF to 25MB didn't help in my testings. So what should I do? Have a to-be-sent queue?

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  • An XKB keyboard map that responds to the left and right shift key individually

    - by mbfisher
    First off, excuse my ignorance of X and XKB; I've been trying to hack together a solution in the hope of being able to achieve what I want without requiring a detailed grasp of it. I'm trying to create an XKB keyboard map on Ubuntu 12.04 that allows me to stipulate which of the two shift keys constitutes the Level2 modifier. Specifically, the 4 key should only produce a $ when the right shift is held, not the left. My reading so far: http://www.charvolant.org/~doug/xkb/html/node5.html http://people.uleth.ca/~daniel.odonnell/Blog/custom-keyboard-in-linuxx11 http://www.x.org/releases/X11R7.5/doc/input/XKB-Enhancing.html Lots of searching! I've attempted to define a custom type, and then refer to it explicitly in a symbols map: /usr/share/X11/xkb/types/mbfisher: default xkb_types "mbfisher" { type "RIGHT_SHIFT" { modifiers = None+Shift_R; map[None] = Level1; map[Shift_R] = Level2; }; } /usr/share/X11/xkb/symbols/mbfisher: default partial alphanumeric_keys xkb_symbols "basic" { name[Group1]= "mbfisher"; key <AE04> { type= "RIGHT_SHIFT", symbols[Group1]= [ 4, dollar ] }; }; I'm then selecting the map with the Ubuntu Keyboard Layout GUI. This obviously disables the alphanumeric keyboard apart from the 4 key, but the dollar sign can still be typed with either shift key. I'm conscious of writing a massive question with lots of useless information so I'll stop here; please ask for anything I've missed out. Any ideas?

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  • USB Mouse and Keyboard not working in Linux 4 Tegra

    - by Sijo
    I am a new person in Tegra Linux development. I have Tamontem NG Evaluation board with Tegra 3 Chip. I installed L4T sample file system from NVIDIA tegra Resources (https://developer.nvidia.com/linux-tegra) and installed the file system as described in the documentation provided in NVIDIA site. Already these was an SD card with L4T running. i dont want to change the boot loader. So I copied the boot.scr.uimg to root (/) folder and uImage to boot(/boot/) and it starts booting from the existing SD card. After that while booting, some errors occurred in some Bluetooth devices (there is no bluetooth device in the board). So I disabled Bluetooth by giving the following command sudo mv /etc/init/bluetooth.conf /etc/init/bluetooth.conf.noexec Now the problem is that mouse and keyboard are not working. So i cannot login. Even though i installed desktop, the mouse and keyboard are not working. But mouse and keyboard are enumerating. lsusb command is showing the USB mouse and keyboard. The installed file system is Ubuntu 13.04. Linux Kernel version is 3.1 What to do. Please help.Thanks in Advance.

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  • How to make emacs accept UTF-8 from the keyboard

    - by Brent.Longborough
    My friends have persuaded me to "try again" (about the 5th time in about 12 years) with emacs. I'm currently suffering a little, and need help with emacs + utf-8. I'm running the 23.3.1 emacs gui on Windows 7 with my own custom keyboard layout (built with MS Keyboard Layout Creator). The layout has a full ISO-8859-1 (Latin-1) character set, plus some additional characters from ISO-8859-9 (Latin-5, gis etc for Turkish) and w for Welsh (don't know where that one lives). In my .emacs, I have (blindly) added these lines: ;; key board / input method settings (setq locale-coding-system 'utf-8) (set-terminal-coding-system 'utf-8) (set-keyboard-coding-system 'utf-8) (set-language-environment 'UTF-8) ; prefer utf-8 for language settings Now, when I enter characters from ISO Latin-1 from the keyboard, they are accepted without problems, but characters from outside Latin-1 are "translated" to an approximate character in Latin-1. Thus, for example, Latin-5 "g" gets converted to a plain "g". Cutting and pasting, however, work fine. Can anyone tell me what I'm doing wrong? I should like to make everything I do with emacs utf-8 with BOM.

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  • kde dropping keyboard

    - by shabbychef
    I am having problems with KDE 'dropping' my keyboard. It happens periodically when using my gentoo box directly, but has become much worse when accessing via NX (from a Mac laptop). Some possibly irrelevant clues: it appears to happen more often when the system is under higher CPU load the mouse continues to work, but no windows will accept any kind of keyboard focus. kwin will not accept tabbing between windows. when working on the machine directly, I can ctrl-alt-F1 to get to a shell (obviously this does nothing over NX). so I think it is KDE and not xorg. am running kwin-4.3.5-r1, and KDE-4.3.5 generally. this problem definitely appeared after upgrading to kde-4.x, but I do not remember if it appeared in kde-4.2. sometimes the keyboard will reappear, but sometimes I have to kill my kde session. playing with accessibility options or window-focus-stealing options in system-settings under kde will often make the keyboard responsive again, only to drop it perhaps minutes later. I had read online this might be an evdev problem under X (again, I think this is KDE, not X, but will try anything). as a result, I have fiddled with my xorg.conf endlessly. I even deleted it entirely and let nvidia-xconfig have a stab at it, with no luck I am tearing my hair out over this. I have done emerge -e xorg-server and am right now doing emerge -e kwin, to rebuild all packages that might be relevant. no luck with the xorg-server rebuild. any help appreciated. thanks,

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  • How to reproduce the behavior of Mac OS X's dead keys on Windows 7?

    - by Pascal Qyy
    I'm French, but I've chosen to take a QWERTY keyboard for my MacBook Pro for many reasons: first of all, the AZERTY keyboard is not at all ergonomic because it has no numeric keypad, and I must use MAJ or CAPS LOCK to access to the numeric keys ; secondly, I've bought this mac for development ; and chars {, }, etc., are not directly accessible on the Apple AZERTY keyboard the last thing is that: the diacritics are VERY easy to produce on an Apple keyboard with Mac OS X : ? + c for a ç, for example, and many dead keys easy to use (e.g. ? + e, then e give you an é. So, I have no difficulties to write in my native language with this keyboard under Mac OS X. BUT, when I boot on Windows 7's Boot Camp partition, or when I use applications from it through VMware Unity, it is no longer the same comfort! Without numeric keypad, it's impossible to use it for produce specials characters (e.g.: Alt + 0231 for the ç) I've tried many solutions, like auto replacement in Microsoft Office (e.g.: ,,c being replaced by ç), but for all my diacritics, I must type a space, then a back space before the replacement work. I've also tried third party software, as Texter, but it is very buggy and don't work properly (or don't work at all) in many case! So, is there a solution somewhere, to have this Mac OS X's nice and comfortable way of producing diacritics for Windows 7? Thank in advance for your help and your time!

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  • Pressing zero key brings up lock/switch user screen in W7

    - by qinghua
    This issue started after my cat walked all over the keyboard... Whenever I press the "zero" key, the screen goes black and I'm taken to the lock/switch user screen. The other functions of the key work fine - it can produce ) and / like usual. Numlock is off, and as far as I know, my computer doesn't have Function Lock. If I log out of my user account and sign in as a guest, the "zero" works again, but if I create a new user profile, it doesn't work. I get the same issue when I hit "zero" using the on-screen keyboard. My keyboard layout is set to US English. I've uninstalled and reinstalled the ATK package, and updated my keyboard drivers. I have an ASUS U43JC-X1 laptop running Windows 7, and I haven't installed any new programs lately.

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  • Incorporating the Windows 7 onscreen keyboard into a WPF app

    - by mmr
    Windows 7 has a really nice onscreen keyboard program/control for touchscreens. I have a touchscreen app that was originally written for, and will be deployed on, XP. Is it possible to incorporate this keyboard directly into my app, rather than me using a custom control? I can find no programmatic information about it, so any links would be very helpful. Specifically, I'd need: To be able to use the keyboard on an XP machine that will have .NET 3.5 sp1 installed on it. To be able to hide the native keyboard on Windows 7, because I've already incorporated the touchscreen keyboard in my UI and so I don't need another one cluttering up the UI. This native keyboard has two attractive aspects to it. First off, it's automatically localized to the customer's language (though the rest of the app will need modification), and second off, it doesn't seem to suffer from 'touch lag' as the OS tries to figure out whether or not I'm doing a gesture, because I'm clearly typing on a keyboard. The app is WPF based, which should mean easy integration with Windows 7 based controls. EDIT: I'd really like the XP thing, but it's not a requirement. The ability to use the keyboard in Win7, though, seems like it should be possible and even the right way to do it.

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  • Scrolling screen upward to expose TextView above keyboard

    - by Matt Winters
    I think I'm missing something obvious and would appreciate an answer. I have a view with a 2-section grouped tableView, each section having one row and a textView, the heights of the rows 335 and 140. This allows for a box with nicely rounded corners to type text into when the keyboard appears (140 height section) and when the keyboard is dismissed, a nice box to read more text (notes); most of the time, use is without the keyboard. I also added a toolbar at the bottom of the screen to scroll up above the keyboard. A button on the toolbar dismisses the keyboard. This last part works fine with the keyboard going up and down using a notification and the following code in a keyboardWillShow method: [UIView beginAnimations:@"showKeyboardAnimation" context:nil]; [UIView setAnimationDuration:0.50]; self.view.frame = CGRectMake(self.view.frame.origin.x, self.view.frame.origin.y, self.view.frame.size.width, self.view.frame.size.height - 216); [UIView commitAnimations]; But with the above code, the 2 sections of the tableView remain unscrolled, only the toolbar and the keyboard move. With the following code (found both in previous posts), both the toolbar and the tableView sections move. [UIView beginAnimations:nil context:NULL]; [UIView setAnimationDuration:0.50]; CGRect rect = self.view.frame; rect.origin.y -= 216; self.view.frame = rect; [UIView commitAnimations]; Now I know that I have to tweak the numbers to get the everything as I want it but my first question is what is substantively different between the 2 sets of code that the sections move in the 2nd but not in the 1st? The toolbar also moves with the 2nd code. The second question is, am I going to be able to scroll the smaller height section from off the screen to above the keyboard while at the same time moving the toolbar up just 216? Thanks

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  • With Bluetooth keyboard, Bluetooth mouse movement is jerky on Macbook Pro

    - by donut
    I have a Macbook Pro 2,2 from early 2007. I've been using a Targus Bluetooth Laser Mouse for Mac for over a year now and its been wonderful (except for the optical scroll). Tracking has been as smooth as butter. Then someone game me an old Apple Wireless (Bluetooth) Keyboard. When both are connected, the keyboard seems to work just fine but the mouse's tracking is jerky and mouse clicks are occasionally missed. Using the trackpad on my laptop is still smooth and silk. Any ideas of fixing this or do I need a wired keyboard? I'm running Mac OS X 10.5.8

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  • Keyboard doesn't work after upgrade to Debian Wheezy

    - by mikhail
    After upgrade from lenny to wheezy keyboard and mouse don't work in X (keyboard available before it starts). I looked over internet about this issue and found some solutions: remove xorg.conf (http://forums.debian.net/viewtopic.php?f=7&t=62880) update udev and base-files (http://forums.debian.net/viewtopic.php?f=6&t=64927&p=376136#p376136) remove /run directory (http://forums.debian.net/viewtopic.php?f=6&t=64927&p=376136#p376136) reintall xserver and xorg But, nothing helped me :( Logs of X-server haven't got any messages about keyboard or mouse errors. Below you can see configuration of my system: krestyaninov@xxx# uname -a Linux xxx 3.0.0-1-686-pae #1 SMP Sat Aug 27 16:41:03 UTC 2011 i686 GNU/Linux krestyaninov@xxx# dpkg -l |grep udev ii libgudev-1.0-0 172-1 GObject-based wrapper library for libudev ii libudev0 172-1 libudev shared library ii udev 172-1 /dev/ and hotplug management daemon krestyaninov@xxx# dpkg -l |grep base-files ii base-files 6.5 Debian base system miscellaneous files krestyaninov@xxx# dpkg -l |grep xorg ii xorg 1:7.6+8 X.Org X Window System ... ii xserver-xorg 1:7.6+8 X.Org X server

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  • Belkin Flip KVM keyboard skip problems

    - by Craig
    I have just bought a Belkin Flip 2 port KVM. Functionally it is almost there except I have a keyboard sticking problem. So if I type the word 'Hello' it will often (about 25% of the time) output 'Hellooooooooooooooooooooo'. If I plug the keyboard directly into the USB on the computer I don't have this problem, only when plugged into the KVM. I feel like it is a USB speed problem. Followup It appears I have the same problem with the mouse, it will jump from one side of the screen to the other as I move it. The mouse is annoying but half as much as the keyboard.

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  • standard keyboard doesn't work, but hotkeys do.

    - by alureonissue
    I posted earlier, but I've learned more about the problem since. (windows xp sp3) AVAST found alureon in kbdclass.sys and atapi.sys. I quarantined both files and restarted. keyboard and cdrom weren't working. I uninstalled them in device manager and updated the drivers. That fixed the cdrom but not the keyboard. Oddly, the keyboard hotkeys work (the row of special keys across the top for calculator, windows explorer, mail, browser) but the standard keys do not. I uninstalled and reinstalled SP3 to no avail. Any advice? not sure if I should have reposted this but I thought the hotkeys working might be an important point left out in the first post. Sorry if I'm doing this wrong ;/

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  • Keyboard doesn't load in windows xp after Alureon infection

    - by alureonissue
    AVAST detected alureon in a number of system files including atapi.sys and kbdclass.sys iple I quarantined those files, and restarted my machine. After restarting, my keyboard and cdrom did not work (I assumed those drivers would be automatically replaced, but was apparently wrong.) I went into device manager, and checked for hardware changes, it fixed the cdrom (which works now) and looked as though it fixed the keyboard as well. It did not. After multiple reboots the keyboard is still not recognized. It works up until the XP login screen loads, after which it is completely unresponsive. Any advice would be appreciated. Thanks :)

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  • Keyboard shortcuts to control WinAmp

    - by Kip
    Some keyboards have a play/pause button built into the keyboard. I don't have one of those, but I'd like to set up a keyboard shortcut to do the same thing. I'd like the shortcut to work no matter what application has the focus. Is there a way to configure this in WinXP? Also, I'm using an old version of WinAmp (2.95). I'm not sure if that matters, as I thought these keyboard buttons worked universally somehow (but maybe I'm wrong?).

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