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  • How do I clear all gnome shell notifications?

    - by user19448
    I use Jupiter as a power manager. Now I get a good number of notifications from it. I do not have problem with the fact that I get all these notifications. I do however, want to be able to clear all gnome shell notifications with a few clicks. Currently, my entire bottom edge of the screen is filled with notifications and I do not wish to clear each item one by one. So my question is, how do I clear these notifications? If this is not possible in the ui, is it possible to write an extension to do it? Where should I suggest this feature to gnome developers? Gnome forums are almost dead now, the administrator has not activated my created account since 5 days!

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  • Gnome shell crashing in 11.10 with 'purple haze' effect

    - by Andy
    I've just got Gnome with 11.10 up and running with my netbook and liked it so much I thought I'd get my parents old machine sorted with Ubuntu too. Unity works fine but when I try to switch to Gnome shell, I get problems. On login, the wallpaper appears as normal but then the colour bleeds out from the centre, leaving traces of it around the edge in a purple haze (yes, I do like Jimi Hendrix but I'm not making this up). When I go to applications, typing then pressing enter in the search field dumps me out so there's nothing but File / Edit / View etc in top left; starting a program seems to work but then there's only a white screen and no program window. Gnome classic works fine, from the limited use I've given it. I'm using an Asus desktop with ABIT motherboard, 2.6ghz with 1gb RAM; I've checked drivers and it says I'm up to date, Nvidia graphics. Anyone any ideas?

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  • Documenting user interfaces in a mouse-less touch UI

    - by Daniel Cazzulino
    “Old” apps rely on mouse pointing and tooltips to explain what a given button is for. Maybe there is text associated with the button, but you can only put so much text without wasting useful screen state. More so in a phone or tablet app. I’ve seen a trend in Google apps where they put an overlay on top of the app the first time it runs, to explain how the various pieces of UI work. I have seen this also on my Nexus phone, but don’t have a screenshot. I don’t recall a way to actually bring that help overlay back again, so that’s maybe some built-in gesture that’s missing. Here’s what it looks like in Gmail, the first time you use the new compose layout:   I like the approach very much, and I think it’s something that should become standard part of mobile OS, and Windows, including a standard way to bring that help up from within any app....Read full article

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  • Compizconfig Grid doesn't work under Ubuntu as virtual machine

    - by SoftTimur
    I have installed Ubuntu as virtual machine within Mac. I have installed VM tools. The approach in this link of Compizconfig Grid, which worked in my previous laptop where Ubuntu was not a virtual machine, does not work anymore. I set some shortcut, but no action is launched... Does anyone know why? The major functionality I need from Grid is tiling windows to left/right side of the screen... Does anyone know any alternative?

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  • How do I find the angle required to point to another object?

    - by Ginamin
    I am making an air combat game, where you can fly a ship in a 3D space. There is an opponent that flies around as well. When the opponent is not on screen, I want to display an arrow pointing in the direction the user should turn, as such: So, I took the camera location and the oppenent location and did this: double newDirection = atan2(activeCamera.location.y-ship_wrap.location.y, activeCamera.location.x-ship_wrap.location.x); After which, I get the position on the circumferance of a circle which surrounds my crosshairs, like such: trackingArrow.position = point((60*sin(angle)+240),60*cos(angle)+160); It all works fine, except it's the wrong angle! I assume my calculation for the new direction is incorrect. Can anyone help?

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  • Where do I find display brightness controls in Lubuntu?

    - by dlanod
    I'm looking for a control to be able to change my standard display brightness in Lubuntu. I've tried How do I set default display brightness? but my system settings does not include a Screen option. I've also tried Power Manager, Monitor Settings and Screensaver under Preferences and couldn't spot anything to control this option. The function key mappings (this is a laptop) work to change the brightness, but I'm looking for a UI option as the laptop is physically set up to be mouse-based (keyboard is hard to access with how we've got it set up).

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  • Problem installing LibreOffice; please help!

    - by EmmyS
    I followed the instructions for installing LibreOffice found here, which are basically the same instructions found all over askubuntu and the web in general. I followed the instructions (including removing OO first) for gnome; all that is in my Applications menu now is LibreOffice (OO used to have OpenOffice Spreadsheet, OpenOffice Presentation, etc.) When I open LibreOffice, I get the splash screen/menu, but all of the choices for creating new docs are greyed out. It also will not open any office/type files (no errors; they just don't open.) The terminal commands indicated that installation was successful, but obviously something is missing. I'm guessing I can just reinstall OO from the software center, but I'd really like to give LibreOffice a try, given the lack of ongoing development on OO. Can anyone help me out?

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  • Failed to load session "ubuntu"

    - by harsh
    I installed CCSM to enable window previews in Unity. But when I went into extras, there was no 'window preview' option. So I tried experimenting with other options in Compiz and now there are no borders in the dialogue boxes (close, minimize, restore buttons are not there, I had enabled some 'flat....' option in Compiz. Later, I uninstalled Compiz and then reinstalled it. Now it says "Failed to load session Ubuntu" I can't even access through the guest account, I am new to Ubuntu.(please explain in detail). All I have access to is the login screen (it still shows my custom wallpaper). Please help, I don't want to lose my stuff.

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  • Restoring Grub after Kubuntu installation

    - by justquestions
    I installed Kubuntu on top of my existing Ubuntu 12.04 (64 bit) installation. During Kubuntu installation, I chose lightdm as my default display manager (instead of kdm). Now after rebooting, the Grub has a new color (gray instead of default purplish) and the screen while booting is gray (instead of purplish). I am curious if it is possible to change this grub behavior without removing Kubuntu. I did find a lot of discussion about modifying grub themes but they were not very useful because I do not know what is the default unity grub theme. I did reinstall grub but it didn't change anything. I tried the Grub Customizer but couldn't succeed. Thanks in advance!

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  • Can't load any applications

    - by oshirowanen
    After installing Eclipse, I wanted to try to enable the global unity menu for Eclipse. Following a guide on the web, I was to make a change to: sudo nano /usr/lib/gtk-2.0/2.10.0/menuproxies/libappmenu.so by changing Eclipse to Xclipse. After making that change, and then running sudo ldconfig. and even restarting, I can no longer open any application. I just see the application appear on the screen for a split second and then it disappears. So far I have noticed that I can no longer load Eclipse and Chrome. Anyone know how to fix this? I have tried changing Xclipse back to Eclipse and running the command sudo ldconfig, but it makes no difference.

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  • Trying to boot from usb

    - by iron
    I have similar issues but none with the 12.04 build. Im trying this on a dell d610 laptop with a bad hard drive and was told i could just directly boot from the usb drive. Im using an 8g usb drive and i have tried using the uui tool and get this message. SYSLINUX 4.06 EDD 4.06-pre1 Copyright (c) 1994-2011 H.Peter Anvinet al ERROR: No configuration file found No DEFAULT or UI configuration directive found! Then i tried using unetbootin and got the bootup screen with only the default option and it would say auto boot with a 10 sec countdown and start over again. I do have the boot sequence for usb first.

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  • How to make my microphone unmuted on startup?

    - by fiktor
    Every time I boot the microphone is muted. I want it to be unmuted instead. Of course I can do it by 6 easy steps every time: press sound icon in the upper right of the screen. press "Sound settings..." item in the bottom. wait about 10 seconds until a window loads. switch to input tab. uncheck "Mute" checkbox near a microphone icon. close the window. But I want it to be unmuted by default. I guess that in linux world this should be changing 0 to 1 in some line in some configuration file, but I don't really know, where is this line located.

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  • How to solve dual monitor issue, which happens only during X start?

    - by tamashumi
    When is loading and two monitors are connected, instead of a login screen I see this: ...after clicking OK, selection appears: Then I'm following to console login, disconnecting by hand the secondary monitor cable, restart lightdm with a command sudo service lightdm restart ...and voila! System loads fine. If I disconnect the cable before boot X will be loaded fine too. It's not a nice 'feature' when I have to disconnect the cable each boot or X restart. I was trying to delete monitors.xml but it didn't help. The situation relates to my notebook with Intel integrated GPU. The same happens on two different pairs of monitors: at the office and at home. How can I fix this? Ubuntu 12.04 x64 Desktop with default Unity GUI.

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  • Booting 11.10 from USB stick on MacBook Pro 5,1 fails

    - by Helge Stenström
    I've created a bootable memory stick on a Windows computer, and tested it on an HP PC. It's made from a 64-bit image of Ubuntu 11.10, downloaded from http://www.ubuntu.com/download/ubuntu/download. When I boot from this memory stick, there is some kind of boot menu, where I can choose to run Ubuntu from the memory stick, or install. I select Run from memory stick. (the words may be wrong here, I'm taking it from memory.) From this point, the screen is black (but backlighted), and I can't do anything but turn off the computer. It gets hot, too. Has anyone been more successful than me? Are there known issues? The computer is a 15 inch MacBook Pro 5,1 (unibody, late 2008), 4 GB memory.

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  • What are good JS libraries for game dev? (HTML5)

    - by acidzombie24
    If i decide to write a simple game both text and graphical (2d) what libs may i use? Assuming we are using a HTML5 compatible browser. The main things i can think of Rendering text on screen Animating sprites (using images/css) Input (capturing the arrow keys and getting relative mouse positions) Perhaps some preloading resource or dynamically loading resources and choosing order Sound (but i am unsure how important this will be to me at first). Perhaps with mixing and chaining sounds or looping forever until stop. Networking (low priority) to connect a user to another or to continuously GET data without multiple request (i know this exist but i dont know how easy it is to setup or use. But this isnt important to me. Its for the question).

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  • Lubuntu 13.04 Resolution Issue du to ppa makson96

    - by Choupa
    I've installed Lubuntu 13.04 on my notebook. (It's the first time I use Lubuntu) I had graphical issue, apparently due to the graphic driver (ATI Radeon Xpress 1200) I followed this procedure to correct my problem : sudo add-apt-repository ppa:makson96 sudo apt-get update sudo apt-get upgrade sudo apt-get install fglrx-legacy My graphical issue has been corrected but now it shows a low resolution (1024*768) and I can't change it. the xrandr result : xrandr: failed to get size of gamma output default Screen 0: minimum 1024x768, current 1027x768, maximum 1024x768 default connected 1024x768+0+0 0mmx0mm 1024x768 0.0* I've already read this topic but I don't really understand how things work there. I'd really appreciate your help ! Many thanks !

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  • Windows Not Sleeping All Night

    - by John Paul Cook
    Having a computer wake up when you don’t want it to wastes electricity and drains the battery on mobile devices. My desktop had been waking up at night, so I assumed it was some network traffic on my home network. I unchecked Allow this device to wake the computer on my network adapters . Figure 1. Network adapter Power Management tab. That didn’t solve the problem. I included the screen capture in Figure 1 because it could be part of the solution for someone else. To identify the root cause instead...(read more)

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  • Chrome keeps crashing after updates

    - by Phil
    I'm a chrome user and an enthusiast but few days ago I made Ubuntu get some updates using Update Manager, then I turned off my notebook and when I restarted it, I tried to start Chrome which after a few seconds turned the screen completely black, and some errors appeared for few seconds and then I got logged off, and had to re-login, and when I opened Chrome again the same thing happened! I've uninstalled it with Synaptic and did complete cleanings before re-installing Chrome but nothing succeeded. Now I can't use either Chromium and Chrome, but Firefox works. It's a very strange thing, never happened to me before and I don't know what to do because I had all my bookmarks syncronized in Chrome! Please help if you can :)

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  • Writing a basic shader for large input files

    - by Zoltan Varadi
    I started writing a shader for my iOS app and instead of starting from scratch i used this tutorial here: http://www.raywenderlich.com/3664/opengl-es-2-0-for-iphone-tutorial I wrote an import function, first to import wavefront .obj models. My problem is that with I can't handle larger inputs (with a simple cube it was working). I realized that the indices array is an array of GLubyte values, which is unsigned char, so as a result i cant have more than 256 indexes. I modified it to GLuint, but then only get a blank screen. What else needs to me modified? p.s.: the source can be downloaded from here: http://d1xzuxjlafny7l.cloudfront.net/downloads/HelloOpenGL.zip

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  • 12.10 Unity doesn't appear when using Nvidia drivers

    - by Torben Gundtofte-Bruun
    I've just installed 12.10 from scratch. Unity also started okay, but in a poor resolution. I found a setting (I think it was in "software sources") to change the display driver to Nvidia, and then I rebooted. When Ubuntu now starts, it goes to the desktop (I see a file that I saved to the desktop) but there are no other screen elements -- no Unity, no menu bar at the top, no window decoration, nothing. Ctrl-Alt-T and Ctrl-Alt-F2 work as they should, but it's kinda limiting... How can I restore the default driver? I guess I need a way to open those "software sources" settings again - or anything else that could fix it! I hope I don't have to type all this by hand. How can I install a proper Nvidia driver so that I can get up to 1280x1024? My old tricks don't seem to work, but perhaps they might if I solve #1...

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  • Failure to start grub with Wubi

    - by Marco Ceppi
    My laptop battery ran down and died while using Ubuntu 10.04 with Wubi. Upon recharge (and restart) selecting Ubuntu from the Windows Boot menu brings me to the typical prompt which says (and I paraphrase): Trying hd(0,0) on Disk... After that the screen flickers to white (for a split second) then black. No grub menu comes up (as I would expect) no cursor, no grub sh prompt. Nothing. I've tried switching TTYs to no avail. As there are no logs, I can't trouble shoot anything. I've run a check disk from windows (on the NTFS partition the root.disk is stored) with no luck. What is causing this failure to load grub (and, by association Ubuntu) - How can I restore my setup and get Ubuntu via Wubi working?

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  • How can I my video card work on Ubuntu 12.04?

    - by Cyriak Burton
    I've recently installed Ubuntu 12.04 on my desktop computer. In order to install Ubuntu, I had to unplug my video card because It was giving me problems, didn't allow me to install Ubuntu. So I unplug it, installed Ubuntu anyway, everything worked as charm, but now and I need to plug it again, but it doesn't work. Here some photos of the problem: Screenshot of the problem #1 Screenshot of the problem #2 Appear that screen and nothing else... I didn't install any driver (I'm kinda noob), in Windows 7 all worked fine, so the problem is with Ubuntu, compatibility problem I guess. Video Card: Zotac GeForce GT 240 O.S.: Ubuntu 12.04 (w/GNOME 3.2) Memory: 2 Gb HDD: 110 Gb Processor: Intel Pentium D 2.80 Ghz PLEASE HELP!!!

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  • Gnome-shell video freeze

    - by josephsmendoza
    So i have a 14.04 Ubuntu Gnome Live USB on my 16GB USB 3.0. It runs fine except sometimes it the screen will freeze, but I know stuff is still happening cause I can hear media playing. I did a little digging and i'm still not sure why, can someone help? Sorry if i don't provide enough details. ubuntu-gnome@ubuntu-gnome:~$ lspci -nnk | grep -iA2 VGA 03:00.0 VGA compatible controller [0300]: NVIDIA Corporation C79 [GeForce 9400}[10de:0867] (rev b1) Subsystem: Apple Inc. iMac 9,1 [106b:00ad] Kernel driver in use: nouveau

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  • Xubuntu all Icons disappeared

    - by user1392185
    I'm running Xubuntu 12.04.1 with kernel Xen4.1-amd64 and the following problem is mine: Nearly all icons have been replaced by the default "no icon available"-icon, even on the login screen and the all icons in software like e.g. Firefox and the icons I manually assigned to launchers, too. Changing the icon theme does not seem to affect this. The only icons that did not disappear are: LibreOffice, gThumb, Simplescan, Ristretto and in the XFCE menu office, tools and graphics. How could I bring the icons back? EDIT: When I tried to use Ristretto the following error showed up: Could not load image-loader module /usr/lib/x68_64-linux-gnu/gdk-pixbuf-2.0/2.12.0/loaders/libpixbufloader-png.so Unable to open shared-object-file I/O error (Had to translate this to English.)

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  • X crash at login for 1 user

    - by marxjohnson
    User switching wasn't working on my 12.04 LTS desktop (just dropped me to TTY8 with a blinking cursor) so I tried to manually start a second X session by logging in to TTY6 and running startx -- :1. This didn't work either, and my machine locked up. Now when I try to log in as the second user from LightDM, X instantly crashes and I'm thrown back to the login screen. Other accounts on the machine work fine, and it happens for every desktop environment. I've had a poke around in my home directory, but I can't see anything obvious to change/delete to get it working again. Can anyone advise please?

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