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• How to make/use launcher?

  - by prosseek

  In ubuntu, I can run firefox with the command firefox in Terminal, or click the button in dock or panel. How does this possible with ubuntu? I googled to find the name launcher, but I don't know exactly how does it work. Q1 : How to make launcher? If I make a GUI program, does that mean that I need to create launcher to start by clicking it? Q2 : Can I make a launcher for whatever program, even if it's not a GUI program? Q3 : How to link a launcher? How can make a link to a launcher in a Desktop to start a program? Q4 : The idea of launcher is unique to ubuntu? Or if I have one launcher, can I use it for other distributions? Q5 : Why some of the program pops up its icon in Docky (firefox for example), but some of the program doesn't (p4v for example) ?

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• Ubuntu 13.10 not playing DVD videos

  - by John Hill

  I installed Ubuntu Gnome 13.10 on my computer yesterday, and everything seems to be working fine so far, except that it isn't reading video or audio CD's and DVD's. At first, I inserted a DVD video, and it played normally for maybe 30-45 seconds before coming up with a "internal read error" or something like that. I was using the Totem player when the problem occurred, so I tried installing the VLC media player. It wouldn't read the disc at all, so I uninstalled the player. Now, the Totem player won't even begin playing the DVD. The player sometimes doesn't even open up when I insert the DVD, and other times it will but says it can't read it. I've tried several different DVD's and CD's with similar results. The computer is recognizing the optical drive, because when I open "Files", it shows the drive and the disc, but can't play it. Previously, I ran Ubuntu 13.04 with the Gnome desktop installed from the software center, and I had no issues. Any help is appreciated!

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• How do I create a 12.04 LiveUSB for a non-PAE machine?

  - by DrSkylaser

  I'm trying to create a dual-boot laptop with Ubuntu 12.04 and some flavor of Windows (TBD). To do that, I need to do some work on partitions & install 12.04. To do that, I need to create a bootable USB that will work with my non-PAE-capable CPU. Someone pointed me to a mini.iso that was allegedly non-PAE-friendly, but it gave me the same error as the straightup 12.04 desktop ISO. What version do I actually need? (This isn't going to be a virtual machine--I don't think the laptop has the RAM to handle that happily--so enabling PAE in the virtual machineware doesn't help me.)

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• So Pretty [Halloween Horror Short Film]

  - by Asian Angel

  A young woman riding the train at night becomes involved in an interesting conversation with a young man about vampires. She thinks vampires are mysterious and misunderstood, but will she still feel the same way by the time the train ride is over? The Continuum: Halloween Short Film – “So Pretty” [via Neatorama] 6 Start Menu Replacements for Windows 8 What Is the Purpose of the “Do Not Cover This Hole” Hole on Hard Drives? How To Log Into The Desktop, Add a Start Menu, and Disable Hot Corners in Windows 8

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• What Language is unity written in?

  - by John

  What Language is Unity written in? Also, where can i get its source code? I have an idea for a windowing enviroment or shell (dont know what to call it). What i want to do is teach myself to create it. i like some of several ideas i have seen, but i want to redo all of them, also the concept of how a desktop works. I figured learning the language Unity is written in, and studying Unity and Gnomes code would be a good start. i am on Ubuntu 12.04 acer aspire 5920 3 gb ram 160 gb hard drive

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• Python simulation-scripts architecture

  - by Beastcraft

  Situation: I've some scripts that simulate user-activity on desktop. Therefore I've defined a few cases (workflows) and implemented them in Python. I've also written some classes for interacting with the users' software (e.g. web browser etc.). Problem: I'm a total beginner in software design / architecture (coding isn't a problem). How could I structure what I described above? Providing a library which contains all the workflows as functions, or a separate class/module etc. for each workflow? I want to keep the the workflows simple. The complexity should be hidden in the classes for interacting with the users' software. Are there any papers / books I could read about this, or could you provide some tips? Kind regards, B

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• What is the best practice for website design and markup now that mobile browsers are common?

  - by Jonathan Drain

  Back in 2008, smartphones were a small market and it was commonplace for sites to be designed for a fixed width - say, 900px or 960px - with the page centered if the browser window was larger. Many designers said fluid width was better, but since user screens typically varied between 1024x768 and 1920x1080, fluid width allowed longer line length than is optimal for ease of reading, and so many sites (including Stack Exchange) use fixed width. Now that mobile devices are common, what is the the best approach to support both desktop and mobile browsers? Establish a separate mobile site (e.g: mobile.example.com) Serve a different CSS to mobile devices; if so how? Server-side browser sniffing, or a @media rule? Use Javascript or something to adapt the website dynamically to the client? Should all websites be expected to be responsive? Some kind of fluid layout Something else?

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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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• Graphic issue on intel945 chipset

  - by peeyush tiwari

  I used Intrepid(8.10) and my graphics used to work fine with compiz effects and all(on better resolution than 1024x768).Now I have upgraded to Precise(12.04)but I use gnome classic(with compiz effects)as my desktop but the compiz effects seem not to work, only unity 2D works. When I ran lshw -c video it gives: *-display UNCLAIMED description: VGA compatible controller product: 82945G/GZ Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 02 width: 32 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list configuration: latency=0 resources: memory:fea80000-feafffff ioport:dc00(size=8) memory:e0000000-efffffff memory:fea40000-fea7ffff Sysinfo shows: Display Resolution 1024x768 pixels OpenGL Renderer Gallium 0.4 on llvmpipe(LLVM 0x300) X11 Vendor The X.Org Foundation On SystemSettings: Memory 993.3 MiB Processor Intel® Pentium(R) 4 CPU 2.40GHz Graphics VESA: Intel(r) 82945G Chipset Family Graphics OS type 32-bit glxgears output comes to be around 100fps which used to be around 900fps in Intrepid

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• Why does Unity in 2d mode employ scaling and the default othographic size the way it does?

  - by Neophyte

  I previously used SFML, XNA, Monogame, etc to create 2d games, where if I display a 100px sprite on the screen, it will take up 100px. If I use 128px tiles to create a background, the first tile will be at (0,0) while the second will be at (129,0). Unity on the other hand, has its own odd unit system, scaling on all transforms, pixel-to-units, othographic size, etc etc. So my question is two-fold, namely: Why does Unity have this system by default for 2d? Is it for mobile dev? Is there a big benefit I'm not seeing? How can I setup my environment, so that if I have a 128x128 sprite in Photoshop, it displays as a 128x128 sprite in Unity when I run my game? Note that I am targeting desktop exclusively.

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• Stop KDE services from running

  - by Gabriel

  I recently installed KDE with the command sudo apt-get install kubuntu-desktop. Now whenever I log into Unity I can see KDE-related services running in the background and I see no obvious way to prevent them from opening at startup. I checked bum but I see nothing there. These are the services I see running right now: kde4 klauncher knotify4 These ones I can identify as being related to KDE given their names, but there could be more. How can I prevent these services from launching by themselves? I should mention I often use KDE applications such as kate, okular and kile. Could these be responsible for opening those services?

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• Ubuntu 11.10 Unity - all Windows decorations disappear after I maximize any window

  - by korda

  When I maximize some of the windows all decorations disappear (by all, I mean on all windows)... Is that common issue on Unity or I'm just unlucky to have some prone to that bug configuration? Anyone have idea how to fix this? EDIT: It won't fix after unmaximize. It seems like maximazing window simply crashes window decorator. Decoration isn't displayed for all existing windows and any new ones. Only way I found to fix this is to run compiz --replace (but this ruins current windows placement - all windows end up on same desktop). It happens almost every time I maximize window.

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• Auto save, filter applied screen shots

  - by DUKE

  Unlike Windows, it is very easy to take screen shots of selected area of the screen in Ubuntu. But I am researching how to have the following features when taking screen shots of the selected area: (1) The final output should be automatically saved to a location, for example on the desktop. (This feature is available in Mac OSX) (2) A filter (such as drop down shadow) should be automatically applied to the image. The above should happen as soon as the selection is done, without poping up any dialogs and expecting any inputs from the user.

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• Learn Where Windows 8 Stores SmartScreen Filter Information for Downloaded Files

  - by Taylor Gibb

  In previous versions of Windows the SmartScreen filter was a feature of Internet Explorer, with Windows 8 it becomes part of the Windows file system. But how does it know which files have been downloaded and which ones originated from your PC? Read on to see how How-To Geek went exploring in the file system. Note: The information provided in this article is for educational purposes only. 6 Ways Windows 8 Is More Secure Than Windows 7 HTG Explains: Why It’s Good That Your Computer’s RAM Is Full 10 Awesome Improvements For Desktop Users in Windows 8

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• What are the default layout settings in gnome-terminal?

  - by Exeleration-G

  I want to replace gnome-terminal fully by lxterminal. I've started by changing the default terminal emulator. So I ran sudo update-alternatives --config x-terminal-emulator, and chose lxterminal. After that, I ran dconf-editor and went to org - gnome - desktop - applications - terminal and changed gnome-terminal to lxterminal and removed the -x in the exec arg part. The only problem though, is that by default, lxterminal doesn't look like gnome-terminal. What are gnome-terminal's default layout settings? I'm especially looking for the hexadecimal colour codes for both text and background.

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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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• New Solaris 11 book available

  - by user12611852

  A new Solaris 11 book is now available.  Congratulations to my colleague in the Oracle Public Sector Hardware sales organization "Dr. Cloud" Harry Foxwell and his co-writers on publishing Oracle Solaris 11 System Administration The Complete Reference Table of contents 1 The Basics of Solaris 11 2 Prepare a System for Solaris3 Installation Options4 Alternative Installations for Enterprise5 The Solaris Graphical Desktop Environment6 The Service Management Facility7 Solaris Package Management "Image Packaging System"8 Solaris at the Command Line9 File systems and ZFS10 Customize the Solaris Shells11 Users and Groups HF12 Solaris 11 Security13 Basic System Performance Tuning14 Solaris Virtualization15 Print Management16 DNS and DHCP17 Mail Services18 Mgmt of Trusted Extensions19 The Network File System 20 The FTP Server21 Solaris and Samba 22 Apache and the Web Stack Buy one today

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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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• Window controls missing; Cannot maximise or minimize applications

  - by omg_scout

  Ubuntu 12.10 32 bits, fresh installation. How can I make Unity maximize or minimize a window? I see no button,option, anything, do I miss something big? Quick googling did not give me a piece of answer, too: On first screen, I have a terminal window. Only clue about maximizing it I found was pressing F11 which made it fullscreen, hiding left bar as well. I would prefer it to take whole free space instead of whole screen. How can I do that? On second screen, I have an opera browser which takes bigger part of the screen but I can't make it take whole screen. Restarting opera did not work. How do I minimize/maximize apps? Also, in case I would like to see the desktop, only solution I found was closing everything Help guys. I kind of like new GUI, but I can't have simplest tasks done there, I feel like I miss something big there.

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• New Marketing Assets Available

  - by swalker

  NEW translated demand generation materials available for the following Oracle Marketing Kits, designed to help partners generate sales around Oracle's solutions: Server & Storage: Improve Database Capacity Management with Oracle Storage and Hybrid Columnar Compression Server & Storage: Accelerating Database Test & Development with Sun ZFS Storage Appliance Server & Storage: Upgrade SAN Storage to Oracle Pillar Axiom Server & Storage: SPARC Refresh with Oracle Solaris Operating System Server & Storage: SPARC Server Refresh: The Next Level of Datacenter Performance with Oracle’s New SPARC Servers Server & Storage: Oracle Server Virtualization Server & Storage: Oracle Desktop Virtualization

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• nouveu driver logs into unity-2d by default

  - by Ubuntuser

  I have an old system with NVIDIA Corporation NV25 [GeForce4 Ti 4600]. When running Ubuntu , the nouveau driver loads fine but does not log into Unity with compiz. Instead it logs into Unity-2D. Any idea how to enable 3D/ compiz with the nouveau driver. OS: Ubuntu 12.04 Beta2 The nvidia driver is no more available for this graphics card, so have to rely on nouveau. UPDATE: Bug reported on launchpad . See here. There has been no reply as yet to this bug-report - does anyone have any idea how to resolve this? Further information, Also, if I use kubuntu desktop, kwin graphics works just fine. But, the users prefer Unity over KDE so I have uninstalled Kubuntu.

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• How to specify 'root' in path in text file

  - by DeanGrobler

  I'm following this tutorial located here on how to create a launcher for eclipse in unity. Everything is going pretty well so far, I've managed to successfully create the launcher but when I click on it, my system complains that the path to the exec is wrong. My exec for eclipse is located here: ~/opt/eclipse/eclipse And if you look at the tutorial you have to create a file and set it's contents like so: [Desktop Entry] Type=Application Name=Eclipse Comment=Eclipse Integrated Development Environment Icon=eclipse Exec=./opt/eclipse/eclipse Terminal=true Categories=Development;IDE;Java; In my case I have to provide the full location for the exec and there are a number of things that I tried that didn't work I set 'exec' to 'Exec=~/opt/eclipse/eclipse' , 'Exec=/opt/eclipse/eclipse' and 'Exec=root/opt/eclipse/eclipse' and none of these worked.. What should I set it to in order to fix the path so that my luancher works? Update------------------ I tried to list those 2 directories and what i get is this:

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• XUbuntu won't boot

  - by Slava Fomin II

  I can't properly boot my XUbuntu desktop. It just hangs on the console without any visible errors. The only way i can boot it properly is choosing "recovery mode" in GRUB and then selecting "continue booting" in recovery menu. It's really annoying. I provide some logs here: http://www.sendspace.com/filegroup/mQ%2FzdWvVcrjB3dz4vVqjsw Please advise! If you need some additional information i will be glad to provide it. Any hints and support will be much appreciated.

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• What is the ideal laptop for creative coding applications?

  - by Jason

  Hi, I am a creative coder using C++(cinder and OpenFrameworks) I am looking to upgrade from my MacBook, which slowed down to about 3fps this morning. My project involves particles systems and fluids reacting to audio analysis data and computer vision data in real-time. SD or HD? no biggie. I have asked many people what computer I need. Ideally, I want a MacBook Pro. But is that enough power? I've been told that I need a desktop for what I am doing though I'd rather stay portable I've been told that I should go PC linux to get the most power but I'd rather stay mac I've been told that RAM is more of bottleneck than processor speed I've been told that the Graphics Card is more important than CPU and that code optimizations such as using trees over lists, proper threading, sending tasks to the GPU make a bigger difference than the hardware!!! what's true?! what do I need? Any suggestions are greatly appreciated

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• why would you use textures that are not a power of 2?

  - by Will

  In the early days of OpenGL and DirectX, it was required that textures were powers of two. This meant that interpolation of float values could be done very quickly using shifting and such. Since OpenGL 2.0, and preceding that via an extension, non-power-of-two texture dimensions has been supported. Are there performance advantages to sticking to power-of-two textures on modern integrated and discrete GPUs? What advantages do non-power-of-two textures have, if any? Are there large populations of desktop users who don't have cards that support non-power-of-two textures?

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