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  • Where can I find comprehensive documentation on the various aspects of Linux?

    - by Fsando
    Whenever a problem pops up in my use of Linux (full time user for 6 years) I start by googling. The simplest (or most common) issues will usually be cleared right away. If it's not in one of those two categories the advise I find tend to be wrong, misguided, obsolete, and if you ask a question here on "ask" you risk being "duplicated" to some superficially similar question. Some issues have haunted me for years until I suddenly hit on the actual developer's documentation (or equivalent) which in a few lines explains how to solve my issue, the correct and consistent way. Whenever that happens I'm always kicking myself: why didn't I just go here to begin with? And the obvious answer is: "I had no idea this was what I was looking for". And for the issues that this hasn't yet happened I'm banging my head: "This ought to be either straight forward or someone tell me it's not doable" So my question is: Are there projects out there trying to collect or list this documentation in a searchable/browseable way. I know there are many very good "if you want this do that" tutorials on Ubuntu but I'm looking for actual documentation. That either are or could be collected in one place (at least conceptually) so that search for information could start in one place. I'm fully aware this is a broad question but if you approach it as: Does gnome have a comprehensive documentation project - where do I find it? Does Ubuntu have a comprehensive documentation project - where do i find it? For example: how exactly does the mime-type association work in Ubuntu and in xubuntu? How exactly are menus created (in Ubuntu: quicklists, xubuntu/gnome: the main menu) How exactly does the rendering process work for compiz/x? (I'm having this issue where windows randomly stops updating until somehow forced to resume (I guess). So for instance where do I look for logs that may indicate the problem. How may I change randr or other settings that may influence this issue. So my point is to organize exact documentation or preferably to find projects that do this already. Thanks! If answers to this question get me started I'm hoping to collect such a list.

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  • Need an expert advice on *X display manager, window manager and composit manager combination

    - by fakemustache
    Hello! I have fought with myself whether or not i should ask this question but I find myself stuck and I need another expert opinion. I can't seem find the right combination of display and window manager (and composit manager). I have tried so many different combinations but most of them don't work for me. I have been working with Linux for a few years now and currently I'm running Gentoo with GDM, Openbox(stand alone, Gnome aware) and xcompmgr. But I have tried Metacity, Awesome and Fluxbox with and without Compiz, but always with GDM. What I want: A lightweight, HIGHLY configurable environment that doesn't rely on mouse-input too much (except for web browsing and image processing). At 95% I work with multiple consoles and desktops on multiple screens. What makes me ask is that most lightweight environments seem somewhat "unfinished" and show unexpected behavior quite often. And of course I want an environment that's not TOO ugly to look at as I use it at an average of 10 hours a day. :) Any thoughts? What do you use in a similar situation? Thanks for any advice! (Please excuse my english as I'm from Germany, btw greetings from Berlin ;)))

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  • Can't find disk usage in one directory

    - by Xster
    Similar questions are asked frequently but no suggested answers solved my issue. I have some disk space usage that I can't find as well. In df Filesystem 1K-blocks Used Available Use% Mounted on /dev/sda1 144183992 136857180 2652 100% / udev 2013316 4 2013312 1% /dev tmpfs 808848 876 807972 1% /run none 5120 0 5120 0% /run/lock none 2022116 76 2022040 1% /run/shm overflow 1024 0 1024 0% /tmp I checked the inodes, I checked lsof for +L1 or deleted files, I rebooted, I checked for files hidden behind mounts but none of them were the issue. It grows periodically and I'm running out of things to delete to feed the beast. It's all in the home directory of the only user I have. In du in ~ du -h --max-depth=1 192K ./.nv 2.1M ./.gconf 12K ./Pictures 1.6M ./.launchpadlib 12K ./Public 24K ./.TemporaryItems 8.9M ./.cache 12K ./Network Trash Folder 28K ./.vnc 11M ./.AppleDB 48K ./.subversion 1.9G ./.xbmc 8.0K ./.AppleDesktop 12K ./.dbus 81M ./.mozilla 12K ./Music 160K ./.gnome2 44K ./Downloads 692K ./.zsh 236K ./.AppleDouble 64K ./.pulse 4.0K ./.gvfs 1.4M ./.adobe 44K ./.pki 44K ./.compiz-1 168K ./.config 1.4M ./.thumbnails 12K ./Templates 912K ./.gstreamer-0.10 8.0K ./.emacs.d 92K ./Desktop 1.3M ./.local 12K ./Ubuntu One 12K ./Documents 296K ./.fontconfig 12K ./.qt 12K ./.gnome2_private 20K ./.ssh 20K ./.mission-control 12K ./Videos 12K ./Temporary Items 640K ./.macromedia 124G . I can't find a way to figure out how it got to that 124G in that directory. There are no mount points in home.

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  • WTH? Upgrading Ubuntu 9.10 to 10.04 Problem: No Internet Connection?

    - by damx
    Earlier today I tried upgrading my Ubuntu 9.10 Karmic Kaola from the update manager. (FYI: all 9.10 updates were applied prior to this) Everything was going well downloading until I got an error dialog informing me that some software packages weren't downloaded because of an Internet connection. Would say it was halfway thru. Anyway, Was told that the software packages that it did download, however, would kept and I figure it's not a big deal. Just run it again. But first ran Firefox to verify my connection as I haven't had any connection problems. But my internet connection was/is fine as evident by this posting. With that cleared, I ran the update manager again, clicked on "Upgrade" and this time I received "Could not download the release notes. Please check your internet connection" huh? This is my first time dealing w/ Ubuntu and my first upgrade so I am hoping someone can help. Not sure what the problem can be. I am can surf the web w/ no problems. Please help. PS: There was no installing at any point. Just downloading. PSS: The software it managed to download the first time around is now visible in the update manager but don't think I should install as I see in the compiz description it's for v1:0.8-4-0ubuntu2 I figure it's designed for 10.04 and might ruin things further if I install

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  • Upgrading Ubuntu 9.10 to 10.04 Problem: No Internet Connection?

    - by damx
    Earlier today I tried upgrading my Ubuntu 9.10 Karmic Kaola from the update manager. (FYI: all 9.10 updates were applied prior to this) Everything was going well downloading until I got an error dialog informing me that some software packages weren't downloaded because of an Internet connection. Would say it was halfway thru. Anyway, Was told that the software packages that it did download, however, would kept and I figure it's not a big deal. Just run it again. But first ran Firefox to verify my connection as I haven't had any connection problems. But my internet connection was/is fine as evident by this posting. With that cleared, I ran the update manager again, clicked on "Upgrade" and this time I received "Could not download the release notes. Please check your internet connection" This is my first time dealing with Ubuntu and my first upgrade so I am hoping someone can help. Not sure what the problem can be. I can surf the web with no problems. PS: There was no installing at any point. Just downloading. PSS: The software it managed to download the first time around is now visible in the update manager but don't think I should install as I see in the compiz description it's for v1:0.8-4-0ubuntu2 I figure it's designed for 10.04 and might ruin things further if I install.

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  • How do I configure nVidia drivers on a Portable Ubuntu setup?

    - by Nicholas Flynt
    I've been pulling my hair out over this one for a couple of days now, google is no help. I've created a wonderful (until this issue) portable copy of Ubuntu linux that will boot on mostly anything by using a USB enclosure for my laptop's 80GB SATA drive. So far so good, it boots and runs on everything, and on non-nVidia card setups was even detecting the drivers, or letting me install the required drivers for hardware acceleration and compiz. Because you know, the wobble windows are the most awesome thing ever. Anyway, my desktop machine had an nVidia card, so I'm thinking, sure, I'll just install the nVidia drivers like before and everything will work happily. Not so-- now the desktop and any other nVidia cards work great, but it seems to have completely disabled any other graphics cards. When the kernel module detects that an nVidia card isn't present, it shoots up this nasty little dialog box giving me the option to boot into "low graphics" mode, which doesn't even allow me to use the correct screen resolution, much less see the installed graphics card and try to configure a driver for it. Is there any way to configure Ubuntu (with the dreaded nVidia kernel module) so that it can use nVidia's drivers when an nVidia card is present, and default to the normal (not low-graphics) setup in other cases, so that it has a fair chance of using what's actually present? I'm not afraid to much with config files, I just don't know the underlying system well enough to feel comfortable diving in without a push in the right direction. Thanks guys!

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  • X.org - mouse gets stuck on press

    - by grawity
    I'm using Arch Linux. Very often, when I click on something, the OS thing sees the mouse press but not the release. If it was a link or file I clicked, moving the cursor would drag it too. Hammering the same mouse button again gives no effect. Usually, if I tap the touchpad (ALPS), the system finally sees both press and release of that, and I can continue working. (This might be because it uses a different driver - synaptics instead of evdev.) As you can imagine, this is quite annoying even for someone who spends 70% of his life in front of a terminal app. This is not a mouse issue - I'm on a laptop, and this affects both the Trackpoint thing and an external USB mouse. This is not a DE or window manager issue - I have used GNOME (with Metacity, Compiz and Xfwm4), Xfce (with Metacity and Xfwm4), mwm, twm, awesome, and wmii. Doesn't seem to be a hardware thing - after rebooting into Windows XP, everything works fine. hal is used for the auto-configuration of devices (as I have to disconnect the USB mouse often), so Xorg.conf really has nothing of relevance. Xorg -version shows: X.Org X Server 1.6.3.901 (1.6.4 RC 1) Release Date: 2009-8-25 X Protocol Version 11, Revision 0 If it changes anything, the laptop is stone-age Dell Latitude C840. I kinda suspect either hal or the evdev thing to cause it, but I really have no ideas on what to check further. In other words, HALP!#$ This thing is driving me nuts.

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  • Kernel Memory Leak in Ubuntu 9.10?

    - by kayahr
    After some days of work (Using suspend-to-ram during the night) I notice I loose more and more available memory. Even when I close all applications the situation doesn't improve. I even went down to the command line and closed ALL running processes except the init process and the bash I'm working in. I unmounted all these ram disks which Ubuntu is using, I even unloaded all modules which could be unloaded. But still "free" tells me that 1 GB of RAM is used (without buffers/cache). In "top" there is no visible process which occupies all this memory. The only way to free the memory is restarting the machine. How can I find out where I lose all this memory? Is there a known "suspect" who can cause a problem like this? I'm using Ubuntu 9.10 64 bit on a Dell Latitude E6500 (4 GB RAM) with the latest closed-source nvidia driver and Gnome with Compiz. The applications I use most of the time are firefox and eclipse. Any hints how I can find the problem? I'm not a kernel hacker so if the solution is patching the kernel or something like that then I might be out of the game...

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  • Linux on HP Envy

    - by Oscar Godson
    OK, the Ubuntu forums aren't helping and I thought maybe you guys here could help. First off, does anyone know the best flavor of Linux to use on an HP Envy? what has the best support out of the box? If not, does anyone know how the hell to get the following to work on Ubuntu 10.04: The touchpad to work at all? Right now, right clicking doesnt work at at all, and left clicks dont work while you have another finger on the pad at all. It jumps all over. ALSO, the multi-touch isn't clickable, but it's for sure a multi-touch touchpad. Works in W7 and can do things like a MBP in W7 The computer feels like it's on fire... i think im missing some driver. Seems odd that the random meta keys like calc, email, brightness, right click, etc work, but not the touchpad? The video card seems fine, but i haven't tested compiz fully yet... Thanks so much to anyone who helps. i want to get back to linux after a couple years on Mac. :)

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  • Keeping Xv Overlay configuration throughout an X session.

    - by kriss
    After upgrading my Linux system from Ubuntu 9.04 to Ubuntu 10.10, I suceeded correcting most problems (all related to Intel 82865G Integrated Graphics Adapter support and compiz is still not working but that's another matter) but for one I only have a partial solution. Whenever I play a video the colors are much too saturated. This is really a problem for tones of skins that appears reddish (everyone seems to be coming back from a ski vacation with deep sun burns). As this effect only occurs with videos, not with pictures, I finally figured out it was related to Video Overlays configuration and I can correct it typing: xvattr -a XV_SATURATION -v 120 This change the default saturation value, which is 500 and much too high in my case, at eye sight the correct value seems to be between 100 and 150. Now my problem is that I have to type the above command each time I run a video. If I type it before running the video it has no effect, if I close the video and open a new one, I have to type it again, etc. I tried to put it in Xsession and (logically) it has no effect either. How could I do to get the correct setting whenever I run a video without typing the above command every time ?

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  • Looking for a "light" compositing manager for GNOME

    - by detly
    I have an HP Pavilion DM3 (graphics is nVidia GeForce G105M), running Debian Squeeze with GNOME 2.30. My preference for DE is Gnome + Metacity + Nautilus. I'd like to use Docky, but it requires compositing. So I'm looking for a relatively "light" compositing manager. I realise that "light" is ambiguous, but I basically want something that won't chew through my notebook's batteries because of CPU or GPU usage. I know that Metacity is capable of compositing, but as far as I'm aware it's still testing. Some people report that it's smooth and lightweight, others claim that it eats up processor time. I've also seen references to a problem with nVidia, but no actual details. I'm not averse to Compiz, but I haven't used it before and I don't know what to expect in terms of "weight." And maybe there's something else I haven't heard of. So can anyone recommend anything? Or dispel my idea that Metacity is not the right tool for the job? (Originally posted on GNOME forums.)

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  • Custom keyboard map is causing issues with stuck keys

    - by Grumbel
    I have a Microsoft Ergonomic 4000 keyboard and I am running a custom keymap (dvorak with some stuff for umlauts): http://pingus.seul.org/~grumbel/tmp/md5/b054e11505c88e1bfc6ebd5da46bdb78-xmodmap_pke http://pingus.seul.org/~grumbel/tmp/md5/f5e42a5b8ba4a034c5945f719b3d2608-xmodmap_pm This used to work fine for years and it still does, except that I am now having issues with a stuck Mode_switch key. When I hit Control_R and Mode_switch at the same time (happens a lot by accident), the Mode_switch key gets into a 'stuck' state, all letters I type afterwards come out in their umlaut form as if Mode_switch is pressed. I can unstuck the Mode_switch by again hitting Control_R and Mode_switch at the same time, but that leaves Gnome in a broken state where it doesn't react to my Gnome keyboard shortcuts any longer. The key presses themselves are still registered by the window manager as one can see changes in the applications (cursor in Gnome Terminal will turn into an unfilled rect, as if the application lost focus), but don't trigger the bound action. Does anybody have a clue what could be causing this? Or does anybody has an idea how I could debug this? xev doesn't seem to help here, as it is reporting normal KeyPress/KeyRelease events, even when the key is stuck. Also the Gnome key bindings don't get reported at all when its in the 'broken' state. I assume they are captured by the window manager before they even reach xev. I am using Ubuntu 10.04 with Gnome and Metacity, I have disabled all OpenGL related effects, so Compiz shouldn't interfere. Some general info on which applications are involved in Gnomes key binding handling would be helpful as well, as I assume its metacity, but restarting metacity doesn't fix the issue.

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  • I would like to edit the layout of my keyboard just a bit - what's the best way?

    - by Codemonkey
    I'm using an Apple keyboard which has some annoyances compared to other keyboards. Namely, the Alt_L and Super_L keys are swapped, and the bar and less keys are swapped ("|" and "<"). I've written an Xmodmap file to swap the keys back: keycode 49 = less greater less greater onehalf threequarters keycode 64 = Super_L NoSymbol Super_L keycode 94 = bar section bar section brokenbar paragraph keycode 108 = Super_R NoSymbol Super_R keycode 133 = Alt_L Meta_L Alt_L Meta_L keycode 134 = Alt_R Meta_R Alt_R Meta_R I did this by identifying the keys using xev and the default modmap xmodmap -pke and swapping the keycodes. xev now identifies all my keys as correct, which is awesome! I can also use the correct keys to type the bar and less than symbols. (I followed this answer on askubuntu: http://askubuntu.com/q/24916/52719) But it seems the change isn't very deep. For instance, the Super key is now broken in the Compiz Settings Manager. No shortcuts involving the Super key works (but the Alt key does). Also the settings dialog for Gnome Do doesn't heed the changes in xmodmap, and I can't open the Gnome Do window anymore if I use any of the remapped keys. So to summarize, everything broke. I would like a deeper way of telling Ubuntu (or any other Linux distro for that matter) which keys are which on the keyboard. Is there a way to edit the Keyboard Layout directly? I'm using the Norwegian Bokmål keyboard layout. Does it reside in a file somewhere I could edit? Any comments, previous experiences or relevant stray thoughts would be greatly appreciated - Thanks

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  • Ubuntu 10.10 forgets desktop theme.

    - by Marcelo Cantos
    I am running Ubuntu in VirtualBox (on a Windows 7 host). Several times now, the top-level menu bar, the task bar — and seemingly every system dialog — have forgotten the out-of-the-box "Ambiance" theme they conform to when I first installed the system. Window captions still preserve the theme, but pretty much nothing else does. I have searched high and low on Google for assistance with this problem. Everything I've found suggests either running some gconf reset or deleting .gconf* .gnome* and other similar directories. I have followed all this advice and nothing works. I still get a boring Windows-95-style gray 3D look and feel. On previous occasions, after much messing around I've given up and rebooted the VM instance, and been pleasantly suprised to see the original "Ambience" theme restored throughout the UI, but invariably it disappears again some time later, usually after a reboot, so I can never figure out what I did that broke it. Here's a sample from Ubuntu's site of what I want it to look like. And here's a screenshot of my system as it currently looks. Also note that my GNOME Terminals normally have a nice purple semi-translucent look, and as can be seen from the screenshot, they are now just a solid matt white. This last time (just this morning), trying numerous combinations all the usual tricks and rebooting several times hasn't fixed it, so here I am on SU wondering: How do I recover the out-of-the-box theme for my Gnome/Ubuntu desktop, noting that blowing away all config files — as suggested in many places online — fails to achieve this? EDIT: It might help to know that it seems to fail either after I resize the VM instance, forcing the Ubuntu desktop to resize itself, or after I play around with Compiz settings. I haven't been able to figure out which of these it is, and it could be neither. Given the amount of pain I have had to go through to get things back to normal (and given that I am at a loss as to how to do so), it has proven difficult to definitively isolate the cause.

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  • 3 Monitor PCI-e Graphics card on Linux (without tremendous pain)?

    - by N Rahl
    As we are all painfully aware, the only way to get multiple monitors AND compositing (Compiz) on Linux is to use a single graphics card that can drive both (or in my case all three) screens. I bought a Radeon 5750 specifically because it claims to able to drive 3 monitors. I can plug in 3 monitors (2 DVI, 1 HDMI) and the Catalyst Control Center shows all 3, but only 2 can be enabled at a time. The exact message is: The current settings cannot be applied. Possible issues may include: - Display(s) cannot be enabled. - Setting(s) cannot be applied due to insufficient video memory. So I'm going to assume that either the 5750 doesn't support 3 monitors, OR, more likely, ATI couldn't be bothered to add that support to their Linux drivers. So this is a multipart question: First, can anyone suggest a PCI Express Graphics card that can run 3 screens on linux without tremendous pain? I'm looking for something where you install the driver and all three screens "just work". Does such a card exist? Second, if you have a 5750, have you been able to get it to do 3 monitors? I'm running Ubuntu 10.04 at the moment.

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  • Linux: 3 Monitor PCI-e Graphics card (without tremendous pain)?

    - by N Rahl
    As we are all painfully aware, the only way to get multiple monitors AND compositing (Compiz) on Linux is to use a single graphics card that can drive both (or in my case all three) screens. I bought a Radeon 5750 specifically because it claims to able to drive 3 monitors. I can plug in 3 monitors (2 DVI, 1 HDMI) and the Catalyst Control Center shows all 3, but only 2 can be enabled at a time. I'll post the exact error message here soon, but it's very useless. So I'm going to assume that either the 5750 doesn't support 3 monitors, OR, more likely, ATI couldn't be bothered to add that support to their Linux drivers. So this is a multipart question: First, can anyone suggest a PCI Express Graphics card that can run 3 screens on linux without tremendous pain? I'm looking for something where you install the driver and all three screens "just work". Does such a card exist? Second, if you have a 5750, have you been able to get it to do 3 monitors? I'm running Ubuntu 10.04 at the moment. Thanks, Nick

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  • If I run two monitors from two different graphic cards, can I still have Twinview?

    - by rumtscho
    I am planning to get a second 2560x1440 monitor for home. The trouble is, I only have 1xDVI, 1xVGA on my graphics card (a 250 GT). I don't want to buy a new graphics card until the prices for the 500 series have stabilized, so probably not before summer (or will it happen earlier? I don't remember how it was for other series, and I couldn't find long-term price history for video cards). The solution I had in mind is to get the 7600 GS from my old PC, which also has 1xDVI, 1xVGA, and run each monitor on a separate card. I have never done that, and I was wondering 1. If I will be able to run the monitors in Twinview then, or will I be stuck with separate X sessions, and 2. Whether there are some other disadvantages as compared to a single-head graphics card. (I am using the proprietary driver because I need compiz). As an aside, how do I find out whether the DVI port on the old graphics card is dual link?

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  • 3 Monitor PCI-e Graphics card (without tremendous pain)?

    - by N Rahl
    As we are all painfully aware, the only way to get multiple monitors AND compositing (Compiz) on Linux is to use a single graphics card that can drive both (or in my case all three) screens. I bought a Radeon 5750 specifically because it claims to able to drive 3 monitors. I can plug in 3 monitors (2 DVI, 1 HDMI) and the Catalyst Control Center shows all 3, but only 2 can be enabled at a time. The exact message is: The current settings cannot be applied. Possible issues may include: - Display(s) cannot be enabled. - Setting(s) cannot be applied due to insufficient video memory. So I'm going to assume that either the 5750 doesn't support 3 monitors, OR, more likely, ATI couldn't be bothered to add that support to their Linux drivers. So this is a multipart question: First, can anyone suggest a PCI Express Graphics card that can run 3 screens on linux without tremendous pain? I'm looking for something where you install the driver and all three screens "just work". Does such a card exist? Second, if you have a 5750, have you been able to get it to do 3 monitors? I'm running Ubuntu 10.04 at the moment.

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  • Dual Monitor + Virtual Desktop software (plus for cube)

    - by xenithorb
    I've recently purchased another monitor, my first one being a TV and being much larger. I now sit at a desk and use my shiny new 24" LED more often, but I like to extend the desktop into the TV. The problem presented with this is to save power and the longevity of my 47" VIZIO, I try to keep it off when possible. What I'm seeking sounds very simple - If any of you have ever used Compiz or Deskspace (Yod'm) - You'll know what im referring to when I talk about a "cube." The most important functionality I'm looking for is the ability to scroll desktop contents between both displays and virtual desktops. Deskspace does and excellent job of presenting an attractive cube, but it creates a separate cube and virtual desktop space for the second extended monitor (now the TV) - Again, what I'm looking to do is scroll between virtual desktops, by passing through both monitors. The net effect of this functionality would allow me to scroll the contents of the extended monitor to the first monitor should a window get caught there without having to turn on the TV. So imagine the horizontal portion of a cube as being actual real monitors - is there anything that allows one to rotate desktops between displays?

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  • SWT: problems with clicking button after using setEnabled() on Linux

    - by Laimoncijus
    Hi, I have a strange case with SWT and Button after using setEnabled() - seems if I disable and enable button at least once - I cannot properly click with mouse on it anymore... Already minify code to very basic: import org.eclipse.swt.SWT; import org.eclipse.swt.events.SelectionEvent; import org.eclipse.swt.events.SelectionListener; import org.eclipse.swt.layout.GridLayout; import org.eclipse.swt.widgets.Button; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.Shell; public class TestButton { public TestButton() { Display display = new Display(); Shell shell = new Shell(display); GridLayout mainLayout = new GridLayout(); shell.setLayout(mainLayout); shell.setSize(100, 100); Button testButton = new Button(shell, SWT.PUSH); testButton.addSelectionListener(new TestClickListener()); testButton.setText("Click me!"); //testButton.setEnabled(false); //testButton.setEnabled(true); shell.open(); while (!shell.isDisposed()) { if (!display.readAndDispatch()) display.sleep(); } display.dispose(); } class TestClickListener implements SelectionListener { @Override public void widgetDefaultSelected(SelectionEvent e) { } @Override public void widgetSelected(SelectionEvent e) { System.out.println("Click!"); } } public static void main(String[] args) { new TestButton(); } } When I keep these 2 lines commented out - I can properly click on a button and always get "Click!" logged, but if I uncomment them - then I can't click on button properly with mouse anymore - button visually seems to be clicked, but nothing is logged... Am I doing something wrong here? Or maybe it's some kind of bug on Linux platform? Because on Mac running the same code I never experienced such problems... Thanks for any hint! P.S. Running code on Ubuntu 9.10, Gnome + Compiz, Sun Java 1.6.0.16

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  • How to use python to create a GUI application which have cool animation/effects under Linux (like 3D

    - by sgon00
    Hi, I am not sure if my question title makes sense to you or not. I am seeing many cool applications which have cool animations/effects. I would like to learn how to use python to create this kind of GUI applications under Linux. "cool animation/effects" like 3D wall in Cooliris which is written in flash and compiz effects with opengl. I also heard of some python GUI library like wxPython and pyQT. Since I am completely new to python GUI programming, can anyone suggest me where to start and what I should learn to achieve and create such application? maybe learn pyQT with openGL feature? pyopengl binding? I have no clue on where to start. thank you very much for your time and suggestion. By the way, in case if someone need to know which kind of application I am going to create, well, just any kind of applications. maybe photo explorer with 3D wall, maybe IM client, maybe facebook client etc...

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  • How to remove window applet from Gnome3?

    - by Filip Nowak
    I installed today window applet for Gnome3 from this webupd8 post. The effect of the installation shown in the picture. I tried apt-get remove --purge and nothing happens. How do I remove this window applet? http://i.stack.imgur.com/D1s9b.jpg When i try metacity --replace &unity [1] 3171 Checking if settings need to be migrated ...no Checking if internal files need to be migrated ...no Backend : gconf Integration : true Profile : default Adding plugins Skipping upgrade com.canonical.unity.unity.01.upgrade Skipping upgrade com.canonical.unity.unity.02.upgrade Initializing core options...done Initializing bailer options...done Initializing detection options...done Initializing composite options...done Initializing opengl options...done Initializing decor options...done Initializing move options...done Initializing vpswitch options...done Initializing gnomecompat options...done Initializing grid options...done Initializing mousepoll options...done Initializing place options...done Initializing resize options...done Initializing animation options...done Initializing wall options...done Initializing session options...done Initializing workarounds options...done Initializing wobbly options...done compiz (expo) - Warn: failed to bind image to texture Initializing expo options...done Initializing ezoom options...done Initializing staticswitcher options...done Initializing fade options...done Initializing scale options...done Screen geometry changed: 0x0x1920x1080 Initializing unityshell options...done DEBUG 2012-02-19 21:22:40 glib <unknown>:0 Setting to primary screen rect: x=0 y=0 w=1920 h=1080 WARN 2012-02-19 21:22:40 unity.favorites FavoriteStoreGSettings.cpp:138 Unable to load GDesktopAppInfo for 'bluefish.desktop' WARN 2012-02-19 21:22:40 unity.favorites FavoriteStoreGSettings.cpp:138 Unable to load GDesktopAppInfo for 'filezilla.desktop' WARN 2012-02-19 21:22:40 unity.favorites FavoriteStoreGSettings.cpp:138 Unable to load GDesktopAppInfo for 'gimp.desktop' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' WARN 2012-02-19 21:22:40 glib.glib-gobject <unknown>:0 invalid cast from `BamfWindow' to `BamfApplication' Setting Update "texture_filter" Setting Update "sync_to_vblank" Setting Update "fullscreen_visual_bell" Setting Update "panel_opacity" Setting Update "launcher_opacity" Setting Update "icon_size" WARN 2012-02-19 21:23:32 unity.glib.dbusproxy GLibDBusProxy.cpp:255 Cannot call method InfoRequest proxy /com/canonical/unity/lens/applications does not exist WARN 2012-02-19 21:23:32 unity.glib.dbusproxy GLibDBusProxy.cpp:255 Cannot call method SetActive proxy /com/canonical/unity/lens/applications does not exist WARN 2012-02-19 21:23:32 unity.glib.dbusproxy GLibDBusProxy.cpp:255 Cannot call method InfoRequest proxy /com/canonical/unity/lens/commands does not exist WARN 2012-02-19 21:23:32 unity.glib.dbusproxy GLibDBusProxy.cpp:255 Cannot call method SetActive proxy /com/canonical/unity/lens/commands does not exist WARN 2012-02-19 21:23:32 unity.glib.dbusproxy GLibDBusProxy.cpp:255 Cannot call method InfoRequest proxy /com/canonical/unity/lens/files does not exist WARN 2012-02-19 21:23:32 unity.glib.dbusproxy GLibDBusProxy.cpp:255 Cannot call method SetActive proxy /com/canonical/unity/lens/files does not exist WARN 2012-02-19 21:23:32 unity.glib.dbusproxy GLibDBusProxy.cpp:255 Cannot call method InfoRequest proxy /com/canonical/unity/lens/music does not exist WARN 2012-02-19 21:23:32 unity.glib.dbusproxy GLibDBusProxy.cpp:255 Cannot call method SetActive proxy /com/canonical/unity/lens/music does not exist WARN 2012-02-19 21:23:33 unity.iconloader IconLoader.cpp:509 Unable to load contents of file:///usr/share/icons/unity-icon-theme/places/svg/category-available.svg: Blad podczas otwierania pliku: Nie ma takiego pliku ani katalogu WARN 2012-02-19 21:23:33 unity.iconloader IconLoader.cpp:509 Unable to load contents of file:///usr/share/icons/unity-icon-theme/places/svg/category-installed.svg: Blad podczas otwierania pliku: Nie ma takiego pliku ani katalogu

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  • 64-bit linux kernel only seeing 3 of 4GB after upgrade...

    - by Blaine
    Hey everyone. I am running Ubuntu 9.04 64-bit on my macbook. I had 2GB of ram before, and everything ran great. I just upgraded to 2x2GB (4GB), but my system only sees 3GB of it. OS X, which I am dual booting, sees all 4GB. Also, my video performance is incredibly lacking. Before the upgrade my compiz benchmark was full at 80fps, and now it is at 22fps with very choppy window dragging. Has anyone ever heard of this on a 64-bit kernel? I just don't quite understand what could be the issue. 10$ uname -a Linux macbook 2.6.28-15-generic #49-Ubuntu SMP Tue Aug 18 19:25:34 UTC 2009 x86_64 GNU/Linux $ free -m total used free shared buffers cached Mem: 2953 1031 1921 0 114 427 -/+ buffers/cache: 489 2463 Swap: 7812 0 7812 9$ lsmod Module Size Used by i915 77960 2 drm 123232 3 i915 binfmt_misc 18572 1 ppdev 16904 0 btusb 21784 2 bridge 63776 0 stp 11140 1 bridge bnep 22912 2 vboxnetadp 109356 0 vboxnetflt 116972 0 vboxdrv 1721612 1 vboxnetflt uvcvideo 69640 0 compat_ioctl32 18304 1 uvcvideo videodev 45184 2 uvcvideo,compat_ioctl32 v4l1_compat 23940 2 uvcvideo,videodev lp 19588 0 parport 49584 2 ppdev,lp snd_hda_intel 557492 3 snd_pcm_oss 52352 0 snd_mixer_oss 24960 1 snd_pcm_oss snd_pcm 99464 2 snd_hda_intel,snd_pcm_oss arc4 10240 2 snd_seq_dummy 11524 0 ecb 11392 2 snd_seq_oss 41984 0 snd_seq_midi 15744 0 snd_rawmidi 33920 1 snd_seq_midi snd_seq_midi_event 16512 2 snd_seq_oss,snd_seq_midi snd_seq 66272 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event ath9k 310584 0 snd_timer 34064 2 snd_pcm,snd_seq snd_seq_device 16276 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq mac80211 251528 1 ath9k iTCO_wdt 21712 0 iTCO_vendor_support 12420 1 iTCO_wdt joydev 20992 0 video 29204 0 snd 78920 15 snd_hda_intel,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device applesmc 37700 0 output 11648 1 video soundcore 16800 1 snd pcspkr 11136 0 cfg80211 43680 1 mac80211 appletouch 19972 0 isight_firmware 11520 0 input_polldev 12688 1 applesmc intel_agp 39408 1 snd_page_alloc 18704 2 snd_hda_intel,snd_pcm led_class 13064 2 ath9k,applesmc hid_apple 15872 0 usbhid 47040 0 ohci1394 42164 0 ieee1394 108288 1 ohci1394 sky2 63364 0 fbcon 49792 0 tileblit 11264 1 fbcon font 17024 1 fbcon bitblit 14464 1 fbcon softcursor 10368 1 bitblit Some information from dmesg: [ 795.820163] ACPI: EC: GPE storm detected, transactions will use polling mode [ 1762.709516] [drm:i915_getparam] *ERROR* Unknown parameter 6 [ 1763.078130] [drm:i915_getparam] *ERROR* Unknown parameter 6 [ 2362.760889] [drm:i915_getparam] *ERROR* Unknown parameter 6 [ 2416.352084] ACPI: EC: missing confirmations, switch off interrupt mode. [ 3718.721095] [drm:i915_getparam] *ERROR* Unknown parameter 6 [ 3719.108914] [drm:i915_getparam] *ERROR* Unknown parameter 6 [ 4318.773266] [drm:i915_getparam] *ERROR* Unknown parameter 6 [ 9513.813066] CE: hpet increasing min_delta_ns to 15000 nsec [ 9693.815684] npviewer.bin[6736]

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  • Ubuntu 11 and 12 initially fast but later bogs down, CPU pegged

    - by uos??
    I started with Ubuntu 11 a few weeks ago. It's on a DELL M4300 with a OCZ SSD. Default setup, except that I've installed the proprietary NVIDIA graphics and BROADCOM wireless drivers. Dual boot with Windows. If I cold boot into Ubuntu, it is very fast, just like the Windows experience that I'm used to. But SOMETHING happens, and I haven't yet determined what, but the system gets incredibly slow and stays that way. At first I thought it had to do with Adobe Flash because it seemed to be triggered by sites with Flash. But then I removed Flash and the problem remains. I thought it was just an overheating problem, but I've now upgraded to 12.04 which supposedly fixes the overheating problems I've read about. Perhaps the heat situation was brought on by Flash in my early cases? So I installed Jupiter for CPU management, but the thermometer reports a familiar Windows-side temperature of 53 degrees Celsius. Switching Jupiter to lower performance doesn't help. When I check the System Monitor application, sorting by CPU usage, there are no obvious problem processes. However, in the graphs tab, both CPU cores are pegged at 100%! I notice that the slowness seems to be similar to the extremely bad performance I got prior to installing the NVIDIA drivers. I'm not sure if that helps. This is the strangest part to me - although the temperature seems OK, even after rebooting, the system remains slow - starting with GRUB2 which is very noticeably delayed, all the way through to either Ubuntu or Windows! That's right, even the Windows side suffers effects and takes several minutes to complete booting whereas normally (with my SSD) it's ready to use in 15 seconds. The only way to fix it is to shutdown and let the parts cool down. Or maybe it just needs to completely power off and boot rather than a soft reboot, temperature has nothing to do with it? - is that possible? But know that I have never had this problem in Windows, even if Windows gets very hot (135 F) a reboot would be enough time for it to recover. For this reason, I don't think it's a heat thing, but I can't imagine what else could be surviving the reboot. I'm entirely updated - there are no pending updates. I have the Post-Release updates of NVIDIA too, btw. If this sounds CLOSE to something you know about, but one of the details doesn't line up exactly, it might be a mistake in my perception. Are there tests you can suggest to rule something out? Thanks! processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Duo CPU T9500 @ 2.60GHz stepping : 6 microcode : 0x60c cpu MHz : 800.000 cache size : 6144 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 apicid : 0 initial apicid : 0 fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm ida dts tpr_shadow vnmi flexpriority bogomips : 5187.00 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 23 model name : Intel(R) Core(TM)2 Duo CPU T9500 @ 2.60GHz stepping : 6 microcode : 0x60c cpu MHz : 800.000 cache size : 6144 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 apicid : 1 initial apicid : 1 fpu : yes fpu_exception : yes cpuid level : 10 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good nopl aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 lahf_lm ida dts tpr_shadow vnmi flexpriority bogomips : 5186.94 clflush size : 64 cache_alignment : 64 address sizes : 36 bits physical, 48 bits virtual power management: (Redundant figures removed. You can view them in the edits if they are still relevant) ps: %CPU PID USER COMMAND 9.4 2399 jason gnome-terminal 6.2 2408 jason bash 17.3 1117 root /usr/bin/X :0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch -background none 13.7 1667 jason compiz 1.3 1960 jason /usr/lib/unity/unity-panel-service 1.3 1697 jason python /usr/bin/jupiter 0.9 1964 jason /usr/lib/indicator-appmenu/hud-service 0.6 1689 jason nautilus -n 0.4 1458 jason //bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session I should highlight specifically that GRUB2 can also be very slow. I don't know the relationship of which scenarios GRUB2 is also slow, but WHEN it is slow, it is slow both before the menu appears and after the selection is made - although for the diagnosis of GRUB2 it is harder for me to tell what the normal speeds should be. With SSD, I would expect that GRUB2 could load instantly, and that the GRUB2 purple would disappear instantly after the selection. The only delay to be expected is the change in graphics modes (though I couldn't guess why that ever requires any noticeable time)

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  • Run Windows in Ubuntu with VMware Player

    - by Matthew Guay
    Are you an enthusiast who loves their Ubuntu Linux experience but still needs to use Windows programs?  Here’s how you can get the full Windows experience on Ubuntu with the free VMware Player. Linux has become increasingly consumer friendly, but still, the wide majority of commercial software is only available for Windows and Macs.  Dual-booting between Windows and Linux has been a popular option for years, but this is a frustrating solution since you have to reboot into the other operating system each time you want to run a specific application.  With virtualization, you’ll never have to make this tradeoff.  VMware Player makes it quick and easy to install any edition of Windows in a virtual machine.  With VMware’s great integration tools, you can copy and paste between your Linux and Windows programs and even run native Windows applications side-by-side with Linux ones. Getting Started Download the latest version of VMware Player for Linux, and select either the 32-bit or 64-bit version, depending on your system.  VMware Player is a free download, but requires registration.  Sign in with your VMware account, or create a new one if you don’t already have one. VMware Player is fairly easy to install on Linux, but you will need to start out the installation from the terminal.  First, enter the following to make sure the installer is marked as executable, substituting version/build_number for the version number on the end of the file you downloaded. chmod +x ./VMware-Player-version/build_number.bundle Then, enter the following to start the install, again substituting your version number: gksudo bash ./VMware-Player-version/build_number.bundle You may have to enter your administrator password to start the installation, and then the VMware Player graphical installer will open.  Choose whether you want to check for product updates and submit usage data to VMware, and then proceed with the install as normal. VMware Player installed in only a few minutes in our tests, and was immediately ready to run, no reboot required.  You can now launch it from your Ubuntu menu: click Applications \ System Tools \ VMware Player. You’ll need to accept the license agreement the first time you run it. Welcome to VMware Player!  Now you can create new virtual machines and run pre-built ones on your Ubuntu desktop. Install Windows in VMware Player on Ubuntu Now that you’ve got VMware setup, it’s time to put it to work.  Click the Create a New Virtual Machine as above to start making a Windows virtual machine. In the dialog that opens, select your installer disk or ISO image file that you want to install Windows from.  In this example, we’re select a Windows 7 ISO.  VMware will automatically detect the operating system on the disk or image.  Click Next to continue. Enter your Windows product key, select the edition of Windows to install, and enter your name and password. You can leave the product key field blank and enter it later.  VMware will ask if you want to continue without a product key, so just click Yes to continue. Now enter a name for your virtual machine and select where you want to save it.  Note: This will take up at least 15Gb of space on your hard drive during the install, so make sure to save it on a drive with sufficient storage space. You can choose how large you want your virtual hard drive to be; the default is 40Gb, but you can choose a different size if you wish.  The entire amount will not be used up on your hard drive initially, but the virtual drive will increase in size up to your maximum as you add files.  Additionally, you can choose if you want the virtual disk stored as a single file or as multiple files.  You will see the best performance by keeping the virtual disk as one file, but the virtual machine will be more portable if it is broken into smaller files, so choose the option that will work best for your needs. Finally, review your settings, and if everything looks good, click Finish to create the virtual machine. VMware will take over now, and install Windows without any further input using its Easy Install.  This is one of VMware’s best features, and is the main reason we find it the easiest desktop virtualization solution to use.   Installing VMware Tools VMware Player doesn’t include the VMware Tools by default; instead, it automatically downloads them for the operating system you’re installing.  Once you’ve downloaded them, it will use those tools anytime you install that OS.  If this is your first Windows virtual machine to install, you may be prompted to download and install them while Windows is installing.  Click Download and Install so your Easy Install will finish successfully. VMware will then download and install the tools.  You may need to enter your administrative password to complete the install. Other than this, you can leave your Windows install unattended; VMware will get everything installed and running on its own. Our test setup took about 30 minutes, and when it was done we were greeted with the Windows desktop ready to use, complete with drivers and the VMware tools.  The only thing missing was the Aero glass feature.  VMware Player is supposed to support the Aero glass effects in virtual machines, and although this works every time when we use VMware Player on Windows, we could not get it to work in Linux.  Other than that, Windows is fully ready to use.  You can copy and paste text, images, or files between Ubuntu and Windows, or simply drag-and-drop files between the two. Unity Mode Using Windows in a window is awkward, and makes your Windows programs feel out of place and hard to use.  This is where Unity mode comes in.  Click Virtual Machine in VMware’s menu, and select Enter Unity. Your Windows desktop will now disappear, and you’ll see a new Windows menu underneath your Ubuntu menu.  This works the same as your Windows Start Menu, and you can open your Windows applications and files directly from it. By default, programs from Windows will have a colored border and a VMware badge in the corner.  You can turn this off from the VMware settings pane.  Click Virtual Machine in VMware’s menu and select Virtual Machine Settings.  Select Unity under the Options tab, and uncheck the Show borders and Show badges boxes if you don’t want them. Unity makes your Windows programs feel at home in Ubuntu.  Here we have Word 2010 and IE8 open beside the Ubuntu Help application.  Notice that the Windows applications show up in the taskbar on the bottom just like the Linux programs.  If you’re using the Compiz graphics effects in Ubuntu, your Windows programs will use them too, including the popular wobbly windows effect. You can switch back to running Windows inside VMware Player’s window by clicking the Exit Unity button in the VMware window. Now, whenever you want to run Windows applications in Linux, you can quickly launch it from VMware Player. Conclusion VMware Player is a great way to run Windows on your Linux computer.  It makes it extremely easy to get Windows installed and running, lets you run your Windows programs seamlessly alongside your Linux ones.  VMware products work great in our experience, and VMware Player on Linux was no exception. If you’re a Windows user and you’d like to run Ubuntu on Windows, check out our article on how to Run Ubuntu in Windows with VMware Player. Link Download VMware Player 3 (Registration required) Download Windows 7 Enterprise 90-day trial Similar Articles Productive Geek Tips Enable Copy and Paste from Ubuntu VMware GuestInstall VMware Tools on Ubuntu Edgy EftRestart the Ubuntu Gnome User Interface QuicklyHow to Add a Program to the Ubuntu Startup List (After Login)How To Run Ubuntu in Windows 7 with VMware Player TouchFreeze Alternative in AutoHotkey The Icy Undertow Desktop Windows Home Server – Backup to LAN The Clear & Clean Desktop Use This Bookmarklet to Easily Get Albums Use AutoHotkey to Assign a Hotkey to a Specific Window Latest Software Reviews Tinyhacker Random Tips Xobni Plus for Outlook All My Movies 5.9 CloudBerry Online Backup 1.5 for Windows Home Server Snagit 10 Get a free copy of WinUtilities Pro 2010 World Cup Schedule Boot Snooze – Reboot and then Standby or Hibernate Customize Everything Related to Dates, Times, Currency and Measurement in Windows 7 Google Earth replacement Icon (Icons we like) Build Great Charts in Excel with Chart Advisor

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