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• How do I type Home/End/PageUp/PageDown on a MacBook Pro?

  - by Daryl Spitzer

  What combination of keys (fn, control, option, command, arrow keys) is the equivalent of the Home key on a MacBook Pro? What about End/PageUp/PageDown?

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• Pushing DNSSEC updates with offline keys

  - by eggyal

  In a non-professional capacity, I look after the DNS of some 18 domains: mostly personal/vanity domains for immediate family. I outsource the whole shebang to an inexpensive managed hosting provider with a web interface through which I manage the zones; since the provider also offers DNSSEC, I have successfully deployed that too. These domains are so unimportant that an attack targetted against them seems much less likely than a general compromise of my provider's systems, at which point the records of all their customers might be changed to misdirect traffic (perhaps with extremely long TTLs). DNSSEC could protect against such an attack, but only if the zone's private keys are not held by the hosting provider. So, I wonder: how can one keep DNSSEC private keys offline yet still transfer signed zones to an outsourced DNS host? The most obvious answer (to me, at least) is to run one's own shadow/hidden master (from which the provider can slave) and then copy offline-signed zonefiles to the master as required. The problem is that the only machine I (want to*) control is my personal laptop, which usually connects from a typical home ADSL (behind NAT over a dynamically-assigned IP address). Having them slave from that (e.g. with a very long Expiry time on the zone for periods when my laptop is offline/unavailable) would not only require a Dynamic DNS record from which they can slave (if indeed they can slave from a named host rather than a static IP address), but would also involve me running a DNS server on my laptop and opening both it and my home network up to the incoming zone transfer requests: not ideal. I would prefer a much more push-oriented design, whereby my laptop initiates transfer of offline-signed zonefiles/updates to the provider's servers. I looked into whether nsupdate could fit the bill: documentation is a little sketchy, but my testing (with BIND 9.7) suggests it can indeed update DNSSEC zones, but only where the server holds the keys to perform the zone signing; I have not found a way to have it take an update including the relevant RRSIG/NSEC/etc. records and have the server accept them. Is this a supported use-case? If not, I suspect the only solutions which could fit the bill will involve non-DNS-based transfer of the zone updates and would welcome recommendations that are supported by (hopefully inexpensive) hosting providers: SFTP/SCP? rsync? RDBMS replication? Proprietary API? Finally, what would be the practical implications of such a setup? Key rotation is jumping out at me as being an obvious difficulty, especially if my laptop is offline for extended periods. But the zones are extremely stable, so perhaps I could get away with long-lived ZSKs**...? * Whilst I could run a shadow/hidden master on e.g. an outsourced VPS, I dislike the overhead of having to secure / manage / monitor / maintain yet another system; not to mention the additional financial costs of so doing. ** Okay, this would enable a concerted attacker to replay outdated records—but the risk and impact of such are both tolerable in the case of these domains.

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• How to work around blocked outbound hkp port for apt keys

  - by kief_morris

  I'm using Ubuntu 9.10, and need to add some apt repositories. Unfortunately, I get messages like this when running sudo apt-get update: W: GPG error: http://ppa.launchpad.net karmic Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 5A9BF3BB4E5E17B5 W: GPG error: http://ppa.launchpad.net karmic Release: The following signatures couldn't be verified because the public key is not available: NO_PUBKEY 1DABDBB4CEC06767 So, I need to install the keys for these repositories. Under 9.10 we now have the option to do this: sudo add-apt-repository ppa:nvidia-vdpau/ppa See this Ubuntu help article for details. This is great, except that I'm running this on a workstation behind a firewall which blocks outbound connections to pretty much all ports except those required by secretaries running Windows and IE. The port in question here is the hkp service, port 11371. There appear to be ways to manually download keys and install them on apt's keyring. There may even be a way to use add-apt-repository or wget or something to download a key from an alternative server making it available on port 80. However, I haven't yet found a concise set of steps for doing so. What I'm looking for is: How to find a public key for an apt-package (recommendations for resources which have these, and/or tips for searching. Searching for the key hash doesn't seem all that effective so far.) How to retrieve a key (can it be done automatically using gpg or add-apt-repository?) How to add a key to apt's keyring Thanks in advance.

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• Reliable custom Windows shortcut keys?

  - by Peter Baer

  I have global Windows shortcut keys assigned to several different cmd.exe instances. I do this by creating shortcuts to cmd.exe on my desktop, and assigning each one a unique shortcut key (for example, CTRL + SHIFT + U). Pretty basic stuff. I'm using Win2K8 (R1 and R2). This works just fine... most of the time. But with infuriating regularity, sometimes it doesn't. Or it will work with a long delay (many seconds). It doesn't matter what app currently has focus (it can even be one of the command prompts). It doesn't matter what keys I assign (I've tried a few variations of WIN, CTRL and SHIFT). I did notice that this is often, but not always, correlated with explorer.exe struggling in some way or another (say, an explorer window opened to a file share that's unavailable, or an app being unresponsive, or whatever). In other words the shortcut key handling appears to be very sensitive to unrelated system activity. Note that whenever I have this problem I can always successfully ALT + TAB to the window I want to get to, but that's tedious. I use the shortcuts to these command windows hundreds of times a day so even a 1% failure rate becomes really annoying. Is there a way to fix this, or is there some third-party utility out there that will RELIABLY intercept custom key combinations to bring focus to whatever apps I want, in a way that is independent of other system activity? ADDENDUM: There is a property of the Windows shortcuts that I would not want to lose if switching to a third-party hotkey tool: Windows shortcuts are idempotent. Once you've launched a shortcut to some app, pressing the shortcut key combo again takes you to the already launched process - it does not launch a new process.

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• Synergy: Cannot send media keys from Linux to Mac

  - by CraftyThumber

  I have a Linux Synergy server (Si-Linux) serving just one Mac client (Macbook Pro UK) (SiBook-Pro.local). On my Linux server I am using a USB Apple keyboard with the exact layout of the laptops keyboard (the compact UK aluminium keyboard). I would like to send the media keys to the Mac client at all times and I have attempted the following in my synergy.conf: keystroke(AudioPlay) = keystroke(AudioPlay,SiBook-Pro.local) This did not seem to work so I ran both the server and client as foreground processes and with debugging enabled and observed the following: Server Log: DEBUG1: activate actions DEBUG1: hotkey: keyDown(AudioPlay,SiBook-Pro.local) DEBUG1: onKeyDown id=57523 mask=0x0000 button=0x0000 DEBUG1: send key down to "SiBook-Pro.local" id=57523, mask=0x0000, button=0x0000 DEBUG1: deactivate actions DEBUG1: hotkey: keyUp(AudioPlay,SiBook-Pro.local) DEBUG1: onKeyUp id=57523 mask=0x0000 button=0x0000 DEBUG1: send key up to "SiBook-Pro.local" id=57523, mask=0x0000, button=0x0000 Client Log: DEBUG1: recv key down id=0x0000e0b3, mask=0x0000, button=0x0000 DEBUG1: mapKey e0b3 (57523) with mask 0000, start state: 0000 DEBUG1: key e0b3 is not on keyboard DEBUG1: recv key up id=0x0000e0b3, mask=0x0000, button=0x0000 DEBUG1: recv enter, 1279,386 5 2000 As you can see, the client claims the key received is not on keyboard. I don't understand since it is the same key as is on the Macbook's keyboard. I tried to reverse the client-server config to see if I could capture the key being sent if I pressed the Play button on the Macbook but the key doesn't seem to even make it to Synergy. Almost all keyboard presses get logged but the media keys seem to bypass the logs and just execute their function locally. E.g. I press play on the Macbook (with the Macbook as the server) and the key plays music on the Macbook and the key is not logged to the debug log.

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• Key-Based SSH Permission denied (publickey) Ubuntu 12-04

  - by user125176

  I have configured sshd to accept key-based ssh logins with LogLevel on DEBUG, and uploaded my public key to ~/.ssh.authorized_keys, where permissions are set as: 700 ~/.ssh 600 ~/.ssh/authorized_keys From root, I can su - USERNAME. From the client I get Permission denied (publicly). From the server Here's how it is telling me that it "Could not open authorized keys '/home/USERNAME/.ssh/authorized_keys': Permission denied". Client protocol version 2.0; client software version OpenSSH_5.2 match: OpenSSH_5.2 pat OpenSSH* Enabling compatibility mode for protocol 2.0 Local version string SSH-2.0-OpenSSH_5.9p1 Debian-5ubuntu1 permanently_set_uid: 105/65534 [preauth] list_hostkey_types: ssh-rsa,ssh-dss,ecdsa-sha2-nistp256 [preauth] SSH2_MSG_KEXINIT sent [preauth] SSH2_MSG_KEXINIT received [preauth] kex: client->server aes128-ctr hmac-md5 none [preauth] kex: server->client aes128-ctr hmac-md5 none [preauth] SSH2_MSG_KEX_DH_GEX_REQUEST received [preauth] SSH2_MSG_KEX_DH_GEX_GROUP sent [preauth] expecting SSH2_MSG_KEX_DH_GEX_INIT [preauth] SSH2_MSG_KEX_DH_GEX_REPLY sent [preauth] SSH2_MSG_NEWKEYS sent [preauth] expecting SSH2_MSG_NEWKEYS [preauth] SSH2_MSG_NEWKEYS received [preauth] KEX done [preauth] userauth-request for user USERNAME service ssh-connection method none [preauth] attempt 0 failures 0 [preauth] PAM: initializing for "USERNAME" PAM: setting PAM_RHOST to "USERHOSTNAME" PAM: setting PAM_TTY to "ssh" userauth_send_banner: sent [preauth] userauth-request for user USERNAME service ssh-connection method publickey [preauth] attempt 1 failures 0 [preauth] test whether pkalg/pkblob are acceptable [preauth] Checking blacklist file /usr/share/ssh/blacklist.RSA-4096 Checking blacklist file /etc/ssh/blacklist.RSA-4096 temporarily_use_uid: 1001/1002 (e=0/0) trying public key file /home/USERNAME/.ssh/authorized_keys Could not open authorized keys '/home/USERNAME/.ssh/authorized_keys': Permission denied restore_uid: 0/0 temporarily_use_uid: 1001/1002 (e=0/0) trying public key file /home/USERNAME/.ssh/authorized_keys2 Could not open authorized keys '/home/USERNAME/.ssh/authorized_keys2': Permission denied restore_uid: 0/0 Failed publickey for USERNAME from IPADDRESS port 57523 ssh2 Connection closed by IPADDRESS [preauth] do_cleanup [preauth] monitor_read_log: child log fd closed do_cleanup PAM: cleanup

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• How to make ssh connection between servers using public-key authentication

  - by Rafael

  I am setting up a continuos integration(CI) server and a test web server. I would like that CI server would access web server with public key authentication. In the web server I have created an user and generated the keys sudo useradd -d /var/www/user -m user sudo passwd user sudo su user ssh-keygen -t rsa Generating public/private rsa key pair. Enter file in which to save the key (/var/www/user/.ssh/id_rsa): Created directory '/var/www/user/.ssh'. Enter passphrase (empty for no passphrase): Enter same passphrase again: Your identification has been saved in /var/www/user/.ssh/id_rsa. Your public key has been saved in /var/www/user/.ssh/id_rsa.pub. However othe side, CI server copies the key to the host but still asks password ssh-copy-id -i ~/.ssh/id_rsa.pub user@webserver-address user@webserver-address's password: Now try logging into the machine, with "ssh 'user@webserver-address'", and check in: .ssh/authorized_keys to make sure we haven't added extra keys that you weren't expecting. I checked on the web server and the CI server public key has been copied to web server authorized_keys but when I connect, It asks password. ssh 'user@webserver-address' user@webserver-address's password: If I try use root user rather than my created user (both users are with copied public keys). It connects with the public key ssh 'root@webserver-address' Welcome to Ubuntu 11.04 (GNU/Linux 2.6.18-274.7.1.el5.028stab095.1 x86_64) * Documentation: https://help.ubuntu.com/ Last login: Wed Apr 11 10:21:13 2012 from ******* root@webserver-address:~#

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• Twitter gem - undefined method `stringify_keys’

  - by Piet

  Have you been getting the following errors when running the Twitter gem lately ? /usr/local/lib/ruby/gems/1.8/gems/httparty-0.4.3/lib/httparty/response.rb:15:in `send': undefined method `stringify_keys' for # (NoMethodError) from /usr/local/lib/ruby/gems/1.8/gems/httparty-0.4.3/lib/httparty/response.rb:15:in `method_missing’ from /usr/local/lib/ruby/gems/1.8/gems/mash-0.0.3/lib/mash.rb:131:in `deep_update’ from /usr/local/lib/ruby/gems/1.8/gems/mash-0.0.3/lib/mash.rb:50:in `initialize’ from /usr/local/lib/ruby/gems/1.8/gems/twitter-0.6.13/lib/twitter/search.rb:101:in `new’ from /usr/local/lib/ruby/gems/1.8/gems/twitter-0.6.13/lib/twitter/search.rb:101:in `fetch’ from test.rb:26 It’s because Twitter has been sending back plain text errors that are treated as a string instead of json and can’t be properly ‘Mashed’ by the Twitter gem. Also check http://github.com/jnunemaker/twitter/issues#issue/6. Without diving into the bowels of the Twitter gem or HTTParty, you could ‘begin…rescue’ this error and try again in 5 minutes. I fixed it by overriding the offending code to return nil and checking for a nil response as follows: module Twitter class Search def fetch(force=false) if @fetch.nil? || force query = @query.dup query[:q] = query[:q].join(' ') query[:format] = 'json' #This line is the hack and whole reason we're monkey-patching at all. response = self.class.get('http://search.twitter.com/search', :query => query, :format => :json) #Our patch: response should be a Hash. If it isnt, return nil. return nil if response.class != Hash @fetch = Mash.new(response) end @fetch end end end (adapted from http://github.com/jnunemaker/twitter/issues#issue/9) If you have a better solution: speak up!

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• Super+digit takes precedence over Ctrl+Super+digit

  - by Gauthier

  I use Ctrl+Super+digit` to switch workspace. I also use Super+digit to start programs that are pinned to the bar (unity default). The problem is that when I try to switch workspace, if I happen to press Super before Ctrl, Super+digit is executed as if Ctrl was never pressed although it is. How do I make sure that Ctrl+Super+digit is recognized as such, whatever the order in which Ctrl and Super were pressed?

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• Window management shortcuts?

  - by pwnguin

  I've got a single massive monitor at home, and I've decided to mimic the Windows 7 window tiling shortcuts. I found a few guides online using wmctrl, and it's going well, save one thing: maximized windows don't respond to it. gconftool-2 --type string --set /apps/metacity/keybinding_commands/command_1 "wmctrl -r :ACTIVE: -e 0, 0,0, `xwininfo -root | grep Width | awk '{ print ($2/2)}'`, `xwininfo -root | grep Height | awk '{ print $2 }'`" (I've added line returns to make an otherwise massive one-liner readable.) I've bound this to a hotkey and it works, unless the window is maximized. Any ideas on how to fix this up?

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• Ctrl + C doesn't abort programs in terminal

  - by jake

  I changed the keyboard shortcut in terminal so that Ctrl + C would copy text. I realized I can't abort a program I am running since Ctrl + C used to be the abort command. I know that Ctrl + Shift + C works but want it switched back. Is there a way to revert the keyboard shortcuts to the real defaults before I decided to mess with it? What is the abort command defined as in keyboard shortcuts? Not a big program if I can't but it would be nice to know.

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• A Perfect Example of Why You Never, Ever Buy a Used Keyboard [Humorous Image]

  - by Asian Angel

  Just go buy a new keyboard…unless you are into masochistic self-torture or other similar pursuits… Note: If you have the stomach for it, you can view the full-size version of the image here. I’m never going to buy a used keyboard ever again. [via Reddit Tech Support Gore] How to Fix a Stuck Pixel on an LCD Monitor How to Factory Reset Your Android Phone or Tablet When It Won’t Boot Our Geek Trivia App for Windows 8 is Now Available Everywhere

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• NX/SSH remote access with Remmina

  - by Niklas

  After many days and a lot of frustration, I managed to get freenx to work on my home server. I can connect to it with nomachine's linux client, but I want to use Remmina for this purpose. The problem is that I don't exactly know how to connect to a NX-server with the program. In the connection dialog, I've chosen SSH as the protocol, and I've correctly added the IP and port. Under "SSH Authentication" I've added my user name on the server, and I choose "identity file" and selected the ssh-key I generated (which works with nxclient). (When am I supposed to provide my password for the user on the server?) When I try to connect I get the message: SSH public key authentication failed: Public key file doesn't exist Why do I get this message? How shall I proceed correctly to get the authentication working? Thank you for your time!

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• Custom keyboard shortcut to lauch a terminal and run a command in Unity

  - by David Weinraub

  I know this should be the simplest thing, but coming up empty. ;-( I would like to create a keyboard shortcut ctrl-alt-P that opens a terminal window and runs a ping command: ping -c 4 somefixeddomain.com [Useful for quickly checking whether my internet connection is actually working.] I have attempted to do this (in Unity, Ubuntu v11.10) using: Settings > Keyboard > Custom Shortcuts filling in all the obvious stuff, but no luck. All ideas welcome.

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• Can't bind gnome-do to Super + Space or Ctrl+Alt+Space

  - by johnf

  With today's updates to 12.04 I can no longer bind gnome-do to either ctrl+alt+space or super+space. With 11.10 it wasn't possible to use super+space, on a fresh install of 12.04 super+space was working properly. Today it stopped working, if I try to bind control+alt+space then the controlkey shows up in the keyboard binding as Primary. I am running Unity, which in the past blocked super+space, it seemed to have stopped blocking it on 12.04. It shouldn't affect ctrl+alt+space. Configuring either binding produces the following error in the gnome-do output: libdo-WARNING **: Binding 'space' failed! libdo-WARNING **: Binding 'space' failed! I'm stuck binding to shift+alt+space.

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• Go to the parent directory in Files/Nautilus Ubuntu 12.10

  - by Piotr Nowicki

  In Ubuntu 12.10 (Gnome3) they've removed the "go to parent directory" using Backspace. I was very used to it... I've seen in source code comments that they've removed this support and there are at least 3 other ways of achieving the same. I wonder - what are other ways besides the Alt + up? Basically, I'd like to find out how to enable the Backspace key to go to the parent directory or at least know the shortcut for doing it with one hand (Alt + up is useless).

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• expand window to free space on screen in kde

  - by Pascal Rosin

  I am using Kubuntu and I want to expand the current window to the free space on the screen or to say it more precisely: I want to make the current window as big as possible without overlapping new windows (windows already overlapped should be ignored). Is there a keyboard shortcut or an extension to the KDE Window management, that realizes such a shortcut or a window button? I would also appreciate a hint, how to write a script that could do this window thing on keyboard shortcut invocation. I am a programmer but don't know what the best way is to control KDE Windows via script.

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• Ubuntu 13.10 japanese keyboard layout intercepts Caps Lock

  - by Envek

  I've installed Ubuntu 13.10 (clean install on new machine), there are lot of changes for configuring keyboard layouts and I've tried to configure it as I've used earlier: Englis (US), Russian and Japanese (Anthy) with switching between them with Caps Lock key. (See screenshot) Caps Lock switching works fine between Russian and English and vice-versa, but with Japanese I can switch only TO Japanese (not FROM), in Japanese layout Caps Lock starting to work as usual Caps Lock (as a switch between small and BIG letters), so I need to use mouse to switch back to Ru or En layout. This happens ONLY with Japanese layouts (I've tried also simply "Japanese" and "Japanese (Kana)"), not with Chinese, Korean or anything else. I'm not sure who is blame for that, is it ibus-anthy or anything. Please help, I want to use Caps Lock to switch between all layouts. Also, I've created a bug in the LaunchPad: https://bugs.launchpad.net/ubuntu/+source/gnome-control-center/+bug/1247363

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• Is there a keybind to minimize all windows, without a toggle?

  - by George Marian

  I know about the show desktop keybind (default Ctrl+Alt+D), which I use often enough. However, I'm looking for a way to minimize all windows without activating "show desktop". I'm on a default install (i.e Gnome, Metacity & Compiz). I've looked through all the locations to configure keybinds, that I know. I've also looked at the default keybind list in the Ubuntu wiki and in the Compiz wiki. (Not to mention, searching here.) I'm interested in knowing where it is available, if not in Gnome/Metacity/Compiz, or some other way to accomplish this with a keybind.

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• Gnome-Screenshot error in Ubuntu GNOME 13.10

  - by Lucas Zanella

  I recently installed Ubuntu GNOME 13.10 (it came with GNOME 3.8, but I replaced by GNOME 3.10) and after a few problems, the only one I couldn't solve was the screenshot problem. When I press the PrtSc key, nothing happens. No sound, no nothing. When I execute it via Terminal by writing "Gnome-Screenshot", it does work and saves in my Pictures folder. I have already tried to re-install the program, but still didn't work. I also tried to create a shortcut with this command line, but still nothing happend. I tried to replace the PrtSc key by another one, just for make sure the problem wasn't in the key, and it still failed. Can anyone help me?

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• How to get OpenSSH to use ksshaskpass under KDE?

  - by Guss

  When using a GNOME desktop on Ubuntu, if I use OpenSSH client to connect to another computer (running from the gnome-terminal), I get a single graphic popup asking for my private key's pass-phrase. After that I no longer need to enter my pass-phrase as it is cached by the SSH agent. Under KDE it doesn't work like that - when I start ssh from konsole, I get a text prompt for my pass-phrase every single time, even though ssh-agent is running. If I run ssh-add from the terminal then I can enter my pass-phrase on the terminal and it will be stored by ssh-agent and I won't get any more pass-phrase prompts, while if I run ssh-add the KRunner graphical command line ("Run" dialog) then I get a graphical prompt with the same behavior. The problem is I have to remember running ssh-add every time I log in to the desktop. How can I get ssh to behave under KDE, the same as it does on GNOME - the first time the pass-phrase is needed, pop up a graphical dialog and store the pass-phrase in the agent. I've installed ksshaskpass, but that didn't change anything.

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• Can I change Synapse shortcut to Super/Windows key alone?

  - by Capt.Nemo

  When I'm trying to edit synapse config, it does not allow me to use Super_L as a direct shortcut for invoking it. Is there a round-about way that I can go through. When I just press the Windows/Super key, the configuration window does not acknowledge it. However, a combination shortcut (such as Super+a) do work fine. Since I'm using Precise, with unity, I'd also need a way to change the default dash behavior from Windows/Super key to something else.

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• Spread windows not working on minimized applications

  - by Jeggy

  When I'm using "SUPER" + "W" to spread all running windows I only see the applications that are not minimized and the others are just nothing as seen on picture below. I have 5 applications running and 3 of them are minimized and this is how it looks: How to fix this? I don't know if this is a bug or if this is normal, but i don't like it this way UPDATE: Just found out that it actually only happens when i use "Super" + "D" to minimize all windows, and then when opening some of them up again it will happen

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• AutoKey inserts blank lines

  - by Mike Pretzlaw

  Situation GNOME Shell AutoKey / autokey-gtk it has a predefined shortcut "adr" which should write an address after hitting space and a shortcut "date" which should write the current date (after hitting tab) Problem no matter what I define, "adr" or "date" it always inserts as much blank lines as the template uses Example: "date" should autocomplete after pressing space to "13/08/01" but it inserts one empty line "adr" should do my full address but it inserts 4 empty lines Question What could be wrong with my AutoKey? Do you need additional information?

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• Why did ctrl-f stop working in LibreOffice?

  - by amandabee

  I've basically settled into Unity, but one constant that is kind of giving me agita is that in LibreOffice Calc (and Writer) ctrl-f does nothing. I can go to edit > find ... and the edit menu even suggests ctrl-f as a keyboard shortcut, but actually typing it doesn't do anything. ctrl-alt-f works fine. The only thing that doesn't work is ctrl-f. I had a really hard time getting settled with Unity (mostly trying to get my old Gnome-do and Compiz settings back) so I spent a lot of time monkeying with the Compiz Settings Manager. But I can't figure out where I would have unset/ overrode this. Plus, it isn't like ctrl-f does something unexpected. It just does nothing.

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