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• Should I force users to update an application?

  - by Brian Green

  I'm writing an application for a medium sized company that will be used by about 90% of our employees and our clients. In planning for the future we decided to add functionality that will verify that the version of the program that is running is a version that we still support. Currently the application will forcequit if the version is not among our supported versions. Here is my concern. Hypothetically, in version 2.0.0.1 method "A" crashes and burns in glorious fashion and method "B" works just fine. We release 2.0.0.2 to fix method A and deprecate version 0.1. Now if someone is running 0.1 to use method B they will be forced to update to fix something that isn't an issue for them right now. My question is, will the time saved not troubleshooting old, unsupported versions outweigh the cost in usability?

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• Wifi worked after reinstalling the driver, but why did it stopped working in the first place?

  - by Ankit

  I was having an issue with connecting to my wifi router since yesterday; could see the router in the wireless networks available but the router was not authenticating my password. I tried unblocking the hardware switches though non was blocked. Finally on discussing with the ISP i gave a re-installation of the wireless driver a try; and to my surprise that worked.(I was assuming faulty wifi router). So as per the subject of the question; I am very curious to know what actually happened that prevented me to connect to my wifi. Any logs that I could see to confirm the cause of this suspicious activity.

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• Size mismatch error while downloading packages [closed]

  - by Nammi-namm

  I've been having this annoying problem lately since I upgraded from Linux Mint 9 to Ubuntu 12.04. It started when I was installing VLC from the Ubuntu Software Centre a few weeks ago. I kept getting this error with packages with "Size mismatch". This happened with many other programs later on. I just got around it by downloading the packages separately and installing them that way. Now I get two updates for packages I installed in that manner. I tried changing from where I download the packages, it didn't change anything. If anyone can help me with my issue it would be splendid. Screen shot below: http://i1078.photobucket.com/albums/w499/Nammi-namm/Screenshots/Screenshotfrom2012-07-02035645.png

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• My laptop doesn't always boot to login

  - by GUI Junkie

  I have an recurring problem. Every once in a while, no pattern, the laptop freezes during boot. Sometimes at a black screen, sometimes a black screen with a not blinking cursor... The solution is to power down the laptop, cross my fingers and boot again. Sometimes it takes four or five reboots, but in the end I always get the system up and running. What bugs me is the fact that the boot is not 'stable' in a sense that apparently it doesn't always do exactly the same thing. I'm still using 10.10. The question is whether there is anything that can be done to make the system stable. (Does 11.04 have the same issue?) Edit: Today the same thing happened. First a black screen with a non blinking cursor. Second a black screen. Third login screen.

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• New Development Snapshot

  I got a little side tracked by the investigation of the Google Collections test suite performance issue, reported by Albert Strasheim in the comments to the previous snapshot. This caused me to do some work on exception handling (unfortunately without any performance benefit to the Google Collections test suite) which, in turn, triggered something I've been wanting to do for while, namely to introduce a stub version of IKVM.OpenJDK.Core.dll which can...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Using packages (gems, eggs, etc.) to create decoupled architectures

  - by Juan Carlos Coto

  The main issue Seeing the good support most modern programming platforms have for package management (think gem, npm, pip, etc), does it make sense to design an application or system be composed of internally developed packages, so as to promote and create a loosely coupled architecture? Example An example of this would be to create packages for database access, as well as for authentication and other components of the system. These, of course, use external packages as well. Then, your system imports and uses these packages - instead of including their code within its own code base. Considerations To me, it seems that this would promote code decoupling and help maintainability, almost in a Web-based-vs.-desktop-application kind of way (updates are applied almost automatically, single code base for single functionality, etc.). Does this seem like a rational and sane design concept? Is this actually used as a standard way of structuring applications today? Thanks very much!

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• How are USB ports related to the computer power, and why would they cause my computer to freeze?

  - by BDuelz

  I have an issue with my new Toshiba laptop. Whenever I plug in an external USB device, if the laptop is not plugged in to the wall, the laptop freezes. However, nothing happens if the laptop is plugged in to the wall. When I say the laptop freezes, I mean it really freezes. The only way to recover is to hard reboot. My question is, what could be causing this? Could it be the extra power drain from the sub devices that causes this (even the simplest flash drives cause a freeze)? Please help me out, it's very annoying. Thanks

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• What's your advice in getting Oracle Certified Professional Java Programmer certificate?

  - by den-javamaniac

  Hi. I'm intending to get the certification but not completely sure how to time effectively prepare myself. So I'm wondering if I can be advised on the matter, in particular I would like next questions to be answered: - What the basic learning/practicing plan should look like? - What book (set of books) should be considered? - What practical exercises should be performed? NOTE: I've got several years of corporate experience (mostly web apps, though), but I want to be 100% sure I'll pass the test (that's the reason the issue is raised).

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• Force Xorg to run in specific resolution

  - by Z9iT

  From my past experience (using Win-Xp), this particular monitor works only on 60Hz , Best resolution being 1024*768. I have "installed n configured" Ubuntu 12.04 Minimal (on USB stick) so that most of the time terminal is used, however whenever theirs a need to enter GUI I may issue startx command to go into gnome. However the problem is that on this particular system, issuing this command poses problem for its default refresh rate don't synchronize with the monitor. The display keep on flickering and utterly unreadable. It is visible that gnome has been loaded and default wallpaper and desktop items are visible. But the problem is due to refresh rate different than 60Hz. I am looking for a command attribute to startx command which will force the refresh rate to 60Hz and resolution preferably to 1204*768

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• How to reduce the time it takes to load my web game? [closed]

  - by Danial

  I created a puzzle game with Unity and uploaded it to one server. This works fine, but I bought a new server and uploaded my game to it as well. There, the loading time is much longer. These are the servers: http://pinheadsinteractive.com/Mozzie/ (fast) http://operation-mozzie-free.com/ (slow) The Unity files are exactly the same from one server to the next. My client is dissatisfied with the new, slow loading time. So, how can I reduce the time my Unity game takes to load? Even in some cases they faced the problem that they could not load the game at all. For the the moment, I'm using an iframe on the new sever as a workaround, but the issue still remains unsolved.

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• How to boot into Ubuntu after installing into a pre-installed Windows 8 pc?

  - by xVerified

  I recently just installed Ubuntu 13 from a USB drive. I have/had Windows 8 64 bit on my desktop computer. When I restart and boot my computer, there is not an option that allows me to choose Ubuntu, it goes straight to Windows 8. I understand this is a common issue. However, my main question is, how do I get to even GO INTO Ubuntu after it's installed? I don't mind booting into Windows 8 at first, but how can I even choose to see Ubuntu now that it's installed?

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• Cant find one particular wireless network. Worked before, but sudenly stopt working.

  - by Haakon

  My first question here. My problem is: I cant find my wireless network at home. Situation: It worked fine 7 days ago. It works with a cable(wierd). I find the network on my ipad/phone. I can connect to wireless hotspot network form my phone and wireless at my university, and it works fine. I can connect to the network in windows What I have tried: Tried this Strange network issue; works on windows, but not on ubuntu, works on campus wireless, but not at home (removing resolve.conf). Hardware and software: I have a Broadcom card Use dual boot ubuntu 12.04 - windows 7 Things I did to make wireless work: blacklist brcmsmac blacklist bcma blacklist b43 blacklist ssb Can anyone help me? I'm about to kill myself(not literary)!! I'm not that good in linux so go gentle on me:)

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• Wifi stops working in 13.10

  - by Vitor

  OK, my wifi is connecting fine, but it just stop downloading and uploading data. The skype stops, trying to reconnect, the firefox nighly and the google chromium stops loading pages and websites, everythings stops. But when I see the network icon: connected to my wifi. Then, I simply reconnect, or disconnect and connect again. Reconnecting, the wifi starts working again, the skype icon turns green, the browsers work again. Previously, I had 13.04 and never had this problem. When I upgraded to Ubuntu 13.10, the wifi started to do this. And the wifi has this problem since the early times of 13.10; since I installed 13.10, the wifi is having this issue (from the first day I installed it). Anyone having the same problem? Anyone knows how to fix it?

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• How to install correctly another Linux flavour (in my case PCLinuxOS) together with installed Ubuntu 10.10 ?

  - by Vincenzo

  Hello everybody and Prosperous and Productive Year 2011 !!! I have Ubuntu 10.10 (32bit) installed on my laptop. I would like to install PCLinuxOS (KDE or LXDE version, I don't know yet) on the same computer across with Ubuntu 10.10. I would like to test 'in real conditions' a new PCLinuxOS as well as to resolve my question regarding Audio CD playback issue (mounting DBus timeout error). I would be grateful if somebody can advise me how to perform the installation of another Linux flavour without breakdown :) of existing Ubuntu system ? Thank you in advance for advices and recommendations. Here is my current partitioning:

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• Booting but not rebooting from external USB hard drive, what could be the problem?

  - by user8276

  I have a Dell Inspiron 6400 laptop with a dead internal hard drive controller. It boots perfectly from CD or USB. I therefore removed the internal hard drive and installed Ubuntu 10.10 Maverick onto an external USB hard drive. It boots and runs perfectly when doing a "cold start" of the PC. However, when I choose restart/reboot in the Ubuntu menu (e.g. after an update), I get this error message from the BIOS: "No bootable devices, strike f1 to retry boot, f2 for setup utility, press f5 to run onboard diagnostics". I can make the system boot again by pressing f2 or f5 and exiting the utility without having done anything. Or, I can simply power off the system and do a new "cold start". Does anyone know the likely reason for this problem and how to fix it. It is not a big issue but an annoyance that I would like to fix if possible.

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• Package version updates policy

  - by Sandman4

  Not sure if here it's the right place to ask, if not - please point me to the right direction. Let's say there's a package, for the sake of real-world example - bind9. In Precise and in Quantal it's version 9.8.1. The original developer (ISC) currently provide versions 9.8.4 which is a bugfix release in the 9.8 line, and 9.9.2 which is a "new features" branch. It looks like when a security issue is encountered, the specific bugfix is backported into 9.8.1. Now the question: Why maintainers don't just update to the latest bugfix release ? Why to backport only certain patches ? Is it intentionally or just there's no maintaner who would take the effort to update to the latest bugfix release ?

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• Ubuntu 12.10 Network Connection menu GUI doesnt work properly

  - by wax

  Many a times I have seen When I click on network connection(besides volume icon), I am unable to select any options. When I hover over VPN connections, the list shows nothing. I have added many VPNs. Network menu becomes non responsive to any clicks. This is annoying because I am not able to connect to any of the VPN connections. "Enable Wireless", "Edit Connections" or any other option doesnt work at all. Restarting ubuntu fixes this issue. But problem starts randomly again and restarting my laptop is the only way to fix it. Is this a known bug? Any ways to fix this prob?

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• Cannot add folders to Ubuntu One

  - by Akmur

  I have signed up with Ubuntu One (20GB) and I'm having the following issue: I basically cannot add folders through the panel interface. I have been able to add five folders so far, but I'd like to add some more (yes, they are inside the home folder). I don't get no errors, but nothing is added to the folders list. By using the command line interface like this u1sdtool --create-folder /home/alex/Web it basically hangs. Nothing happens. If I then list the folders with command line, my folder is not there. Any idea? (I'm on 12.10)

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• BCM4313 Wireless on Ubuntu Server 12.04

  - by KJ Tsanaktsidis

  I'm trying to run an old netbook with Broadcom BCM4313 wireless as a print server with Ubuntu Server 12.04. Setting up the wireless without the GUI, however, is proving problematic. I do think however I've narrowed down the problem. I've tried both the wl driver (from bcmwl-kernel-source) as well as the (included) brcmsmac driver. With both of them, when I issue the command iwlist wlan0 scanning (eth1 for wl), I only see neighbouring networks- not my own. I believe this might be because my networks are n-only, but my neighbouring networks are mixed mode (I suspect this because the output of iwlist wlan0 scanning shows "Bit Rates" only as high as 54 Mb/s). Any ideas how to go about getting this thing to connect?

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• Just installed 12.10 with WUBI and get error

  - by John

  Goes to the terminal screen and says: [drm:drm_crtc_helper_set_config] ERROR failed to set mode on 'crtc:10] From what I gather, this is an issue with my monitor. Not sure. I am really new to this. I have a Compaq Presario running XP SP3 and am using a Sony Bravia 32" LCD TV as a monitor. Downloaded Ubuntu from, well,... Ubuntu. Used WUBI to install. I suppose it created its own partition because install never asked. Is there a work-around for this? I have tried everything I know of, given my very limited experience. Thanks in advance.

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• Picasa(installed using Wine) unable to access some NTFS partitions again in Ubuntu 14.04?

  - by Tom

  Recently I installed Picasa in my Ubuntu 14.04 using Wine. After performing a Wine configuration I was able to access all the images in the NTFS partitions on my hard disk. I performed Wine configuration as said in Why can an application installed using Wine not access NTFS partitions?. After 3 days, it became unable to access 2 NTFS partitions. But I can access 1 NTFS partition(named E, see image below). As you can see in the screenshot, I am unable to expand both D and F. How can I fix this issue permanently ?

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• Audio output and input stopped working after the last update

  - by renatov

  I'm using Ubuntu 14.04 and everything was perfect until todays's update. Now my audio output (speakers) and input (microphone) stopped working. I guess it's a driver issue, but I need help to debug this problem and to solve it. I have a Dell Inspiron 5421 notebook with an Intel audio integrated sound card: $ lspci | grep Audio 00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04) If I go to Ubuntu Settings Sound Output, it doesn't show my Intel card there anymore: The same for the Input tab, it doesn's show my Intel card there anymore: Could you please help me?

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• AntClassLoader bug exposed by forgetful NetBeans

  - by vbkraemer

  Many users have run into ClassNotFoundExceptions and NoClassDefFoundErrors after working with web services that target GlassFish while developing their projects in NetBeans. The issue usually appears as a dialog similar to this This can be pretty debilitating. The bug appears to be in the AntClassLoader, which is tickled by the wsimport ant task that ships with GlassFish 3.1.2. The fix is pretty simple: Upgrade the Metro bits that ship in 3.1.2 with bits that have had a patch applied. There are detailed instruction about installing the updated Metro bits onto GlassFish. This upgrade is probably useful for any install of GlassFish 3.1, but it is critically important for folks that develop web services from inside NetBeans and deploy them onto GlassFish 3.1.2.

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• Can turning off drm_kms_helper polling affect screen brightness control?

  - by dodecaphonic

  I have a Samsung R430 notebook that has been running Ubuntu for close to a year, now. Since I've upgrated to Maverick, I've been dealing with little, but increasingly annoying issues, that put my faith to question. The first one, a CPU-intensive set of drm_kms_helper, made me compile my own kernel and set polling to off just so I could move my mouse without frequent stuttering. That led me to dealing with a screen that gets dimmer and dimmer after each sleep/wake-up cycle, which eventually leads me to reboot. Since I have seen some KMS and brightness related bugs around, I was wondering if it is a definite cause for my problem. If so, has there been any advance on the excessive polling issue for those of us plagued by it?

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• Compiz using 40% CPU on Ubuntu 13.10

  - by Olli

  After upgrading to 13.10, compiz process has started taking up to 40% of CPU resources. In addition, Unity is sluggish just like in this recent question Compiz at 30% of CPU on Thinkpad T420. My PC is HP Compaq NX6310 and Compiz version is 0.9.10.2. First I had error message during boot, but did find solution for that (Bug #1014289) by updating the kernel to newer 3.11.4, it did not change the CPU usage. For the CPU problem I tried solution for Bug #1221837 by adding the line MESA_GL_VERSION_OVERRIDE=1.4 in the file /etc/environment - that did not help me, so my problem seems not to be the same bug. Any suggestions on how to resolve this issue?

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