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• Can't change screen resolution Ubuntu 10.04 (BT)

  - by Universal Coder

  I'm using Backtrack 5 R2 , what is based on Ubuntu 10.04 LTS. It is installed on Samsung Laptop , and default screen resolution in Windows for it is 1366x768 , but BT/Ubuntu Screen Resolution GUI tool (System=Preferences=Monitors) shows that only resolution available is 1024x768 , and called my monitor as "Unknown". Found a solution , that I have to change resolution in /usr/share/xresprobe/xorg.conf , but I did it , logged out/in and restarted many times , but it took me nowhere. Tried with xrandr , but it shows only mentioned 1024x768 as only solution , and when I tried to input needed resolution , but it did not accept it , because it is not available. As much as I googled , there are a lot of people that had similar problems with BT , but most of them solved with VirtualBox additional tools , but it can't help me , because I've installed it as second OS. In one forum read , that same problems is in Ubuntu 12 , so I ask this question here.

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• Broken package ubuntuone-control-panel-qt

  - by baale7

  An interrupted installation of updates resulted in ubuntuone-control-panel-qt breaking and now I cannot install or update anything. There seems to be an error in python2.7 - ImportError: No module named _sysconfigdata_nd dpkg: error processing archive ubuntuone-control-panel-qt_13.09-0ubuntu1_all.deb (--install): When I try to reinstall the package via .deb a dpkg --audit yields: The following packages are in a mess due to serious problems during installation. They must be reinstalled for them (and any packages that depend on them) to function properly: ?python-pexpect Python module for automating interactive applications ?ubuntuone-control-panel-qt Ubuntu One Control Panel - Qt frontend ?hplip-data HP Linux Printing and Imaging - data files ?python-libxml2 Python bindings for the GNOME XML library ?apport automatically generate crash reports for debugging The following packages are only half configured, probably due to problems configuring them the first time. The configuration should be retried using dpkg --configure or the configure menu option in dselect: ?python-ubuntuone-client Ubuntu One client Python libraries ?python-ubuntuone-control-panel Ubuntu One Control Panel - Python Libraries --configure or --configure -a doesn't work Any help?

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• Newly compiled (patched with -ck) 3.3 kernel won't boot up

  - by Shiki

  Screen is garbled. Reaaaally garbled. Like some sort of scrambling image from a movie. I can upload some pictures if needed. To be short with the description. Here is my 3.3 + ck .config file: http://pastebin.com/aP2F9RcH The dmesg log of the failed kernel: http://pastebin.com/esc2Rtka The computer is a ThinkPad T500 laptop. I have selected everything needed for the computer (as far as I can tell, but check the .config). The normal generic Ubuntu kernel boots and works perfect!

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• What is the most reliable session storage in PHP: Memcache, database or files?

  - by user1179459

  What is the best and most safest way to handle PHP sessions. Is the best way to store sessions in: Database (more reliable, but high bottleneck, slow speed, not good for high database usage websites)? Memcache (super fast, but distributed more security problems, chances of loosing data when the server restarted and chances of loosing data when the cache is full)? Files (default option, I guess slow since it reads and writes from file I/O, less security, etc). Which method is the best? What are the problems and good things of each of those approaches?

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• Is it possible to learn maths via programming, or you should learn maths for programming?

  - by SAFAD

  I am not the best in maths, not very horrid either, but lower than the average, I've always been thinking to improve my maths, but schools and books didn't do the job because I get bored too fast. The only thing I don't get bored with is coding and gaming, so I thought what if coding a program that solves mathematical problems will help me understand maths better, most of these problems are limits (calculus), functions, Differential calculus, and some other subjects (I already said am not that good) similar to the previous noted. My question is: Am I able to achieve a better knowledge in maths if I do some specific program coding, and if possible, is physics possible that way too? Or am I wrong and Maths should be learned before programming to help improve my coding? P.S : C++ is the preferred language.

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• How to determine the right amount of up front design?

  - by Gian

  Software developers occasionally are called upon to write fairly complex bits of software under tight deadlines. Often, it seems like the quickest thing to do is to simply start coding, and solve the problems as they arise. However, this approach can come back to bite you—often costing time or money in the long run! How do we determine the right amount of up front design work? If your work environment actively discourages you from thinking about things up front, how do you handle that? How can we manage risk if we eschew up-front thinking (by choice or under duress) and figure out the problems as they arise? Does the amount of up front design depend entirely on the size or complexity of the task, or is it based on something else?

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• How do you dual boot Windows 7/8 seperatly with GRUB?

  - by Aaron

  I installed the beta version of Windows 8 and re-installed GRUB. When I boot my computer and select Windows 7, I get the new Windows 8 booting screen asking to boot between either Windows 7 or 8. If I choose Windows 7, my computer then restarts and I have to select Windows 7 again in order to boot into 7. But if I choose Windows 8 it boots right up. I understand I can choose which OS to boot by default, but I want my GRUB options to be the only way to choose between OS's. So my question is, how can I set this up so that when I click on Windows 7, I go there, and when I select Windows 8, I boot 8?

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• problem with .wax format

  - by Pranjal Singh

  I installed Ubuntu 10.4 onto a pc for an elderly woman. It was supposed to solve the problems she was having with windows, ie: she would constantly remove things, or try to fix problems herself. So I figured that Linux would solve those issues. However, what I didn't take into account was that she watches " http://www.shepherdschapel.com/broadband.htm " and when using Ubuntu, I can't seem to find a media player to make the files work. I am out of ideas. I tried kplayer, and it worked (sort of). The file that is downloaded from the site when you click the windows media player site one link is, .wax format. Which is an instruction file for windows media player. Is there anything I can do to make these videos work?

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• Is OpenStack suitable as a fault tolerant DB host?

  - by Jit B

  I am trying to design a fault tolerant DB cluster (schema does not matter) that would not require much maintenance. After looking at almost everything from MySQL to MongoDB to HBase I still find that no DB is easily scalable - Cassandra comes close but it has its own set of problems. So I was thinking what if I run something like MySQL or OrientDB on top of a large openstack VM. The VM would be fault tolerant by itself so I dont need to do it st DB level. Is it viable? Has it been done before? If not then what are the possible problems with this approach?

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• Ubuntu 12.04 very slow on samsung netbook

  - by vallllll

  I have a samsung netbook n150 1Gb Ram (Intel graphic card), 1,66GHz Intel Atom processor. It was working great with the ubuntu 10.04 netbook edition, really fast boot very eficient but I have updated to 12.04 (the netbook edition doesn't exist anymore) and now the system is so slow: slow boot, sometimes it doesn't even boot properly, strange screen light on and off behaviour, when you click on an icon takes for ever to open the app even the terminal it takes like more than 10s! It seems that this new distro was made for a far more powerful systems than this netbook. I am considering to revert back to 10.04 or choose another linux distro but is there anythhing i can do to fix these problems? Any body else had similar problems. Thanks in advance

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• How do I get to the maintenace shell?

  - by Narida

  I'm asking this because initially, my problem was this (power failure during installation, so I typed the following instructions in the maintenance shell: sudo mount -o remount,rw / sudo dpkg --configure a sudo mount -o remount,ro / sudo sync sudo reboot The first three lines worked, afterwards, my computer (a Dell Inspiron 530) got stalled for several hours, so I unplugged it. When I turned it on, the log in screen appeared, and after I try to write my password, it leads me back to the log screen. I must note that when I typed the first three lines during the maintenance shell mode, it said that the errors which were encountered during processing were: initscripts bluez gnome-bluetooth So, what do I have to do in order to get back to the maintenance shell so I can type code again? And, what code do I have to write in order to restore my computer? Thank you for your attention.

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• How to fix LibreOffice 3.5 to start from launcher icon?

  - by Bucic

  Recently I installed LibreOffice 3.5 from debs (including the ones for desktop integration. Since then it behaves in a weird manner. Basically it won't launch from launcher shortcuts. Example: dash libreoffice launched (launcher shows with 2 seconds delay) 'keep in launcher' LO closed the LO icon on the launcher clicked pulsating for 5 seconds, then stops LO didn't launch I didn't look for open processes or anything and... dash libreoffice launched immediately without problems It also didn't remember recently opened items, but now it got fixed somehow. Other symptoms: - icon on the launcher and all menu categories appear with a delay of few seconds - two writer icons appear on the launcher What I did: used 3.4.5, uninstalled, installed 3.5 RC3, problems started to occur uninstalled RC3 'clean' per http://wiki.documentfoundation.org/Installing_LibreOffice_on_Linux#Debian_.2F_Ubuntu_3 installed 3.5 stable which is identical to RC3 still same issues I don't know if it is related but I use Unity test PPA:vanvugt/unity which I needed to solve the stuttering windows bug. Any ideas?

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• bluetooth between ubuntu 10.10 and nokia error : Could not display "obex://"

  - by MobileDev123

  Hi, I have paired my nokia 3110c via bt on my pc, I can receive a file from my pc to the phone, but I can not browse the contents of phone from my computer. Here is the error message Error: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. Please select another viewer and try again. How can I transfer contents from my phone to my computer?

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• HTG Explains: Why Screen Savers Are No Longer Necessary

  - by Chris Hoffman

  Screen savers are a left-over solution from a previous technology. In spite of their name, screen savers no longer “save” anything – all they do is waste electricity. Screen savers are not necessary on modern, flat-panel LCD displays. Having your computer automatically turn off its display is the new “screen saver” – it saves energy, reduces your electricity bill, and increases your battery life. Screen savers may look pretty, but they do it when no one is looking. HTG Explains: Why Screen Savers Are No Longer Necessary 6 Ways Windows 8 Is More Secure Than Windows 7 HTG Explains: Why It’s Good That Your Computer’s RAM Is Full

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• Always on VPN connection

  - by greg

  I have a working VPN connection. Works like a dream. What isn't working though, is the 'Connect Automatically' option in the Network Connections Manager Panel. It never connects automatically, not at boot, and not after disconnect. I'm not quite sure what that option is for. And I'll get disconnected from the VPN with no warning whatsoever. Is there a way to make sure my computer only connects to the internet through a VPN? So that if the VPN connection isn't established, my computer can't reach the internet. And is there a way to get ubuntu to attempt to reconnect to the VPN automatically if for some reason the connection drops?

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• How to cross-compile programs for the Raspberry Pi with gcc?

  - by InkBlend

  I am fond of using gcc to compile small little C and C++ programs on my main computer. However, I also have a Raspberry Pi, and, being a 700-MHz single-core computer, I would prefer to not have to do my development work on it every time I want to create a binary for it. How (for I know that there's a way) do I cross-compile my program for the Raspberry Pi using my x86 laptop? And is there a way that I may compile C(++) programs on the Pi but produce an x86 binary? If it's any help, "The SoC is a Broadcom BCM2835. This contains an ARM1176JZFS, with floating point..." (according to the official Raspberry Pi FAQ).

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• Is the Lenovo Ideapad Z570 fully compatible with 12.04?

  - by umpirsky

  I'm looking for some notebook that will run on Ubuntu perfectly. I like LENOVO IdeaPad Z570, but I'm not sure how it will perform on Ubuntu. I heard people are complaining about wireless problems. Here is full configuraion: Processor Intel Core i5 2430M 2.4GHz - 3.0GHz Chipset Intel HM65 Express Memory 4GB DDR3 1333MHz Graphics NVIDIA GeForce GT 520M 1GB HDD 750GB SATA II Wireless 802.11b/g/n, Bluetooth 2.1 Network adapter Ethernet LAN 10/100Mbps Ports VGA, HDMI, 3x USB 2.0, eSATA Does anyone have experience with this model? Any problems noted? I heard there is a test suite, how can I install it? Maybe I can boot live CD and try it myself before buying it. But, unfortunately, sometimes something works on live CD, but not when you install it. I guess critical components here are graphics and wireless. Any feedback would be appreciated.

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• No dual boot menu

  - by Christian Galo

  I formatted all of my disk and installed Ubuntu on my computer. I immediately partitioned, from an Ubuntu live CD, my hard drive, creating an NTFS partition for for Windows. After successfully doing so, I went on to install windows 8.1. After I installed Windows 8 in the new partition and turned off my PC and turned it on again the option to chose which Operating system I wanted to use didn't appear, loading Windows like if Ubuntu didn't exist. How can I have the option to chose which operating system I want to run or at least from which partition to boot from when I start my computer? EVERYTHING IS OKAY WITH MY OPERATING SYSTEM The only thing I need is for ubuntu to appear as an option on the boot menus

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• Installing along side of Windows 8

  - by Jake

  It appears as though many people are having problems installing Ubuntu along side Windows 8. My problem, however, seems to be sufficiently different to be unique among such problems. I can't get the Ubuntu 12.10 live-USB installer to run. When I boot I get the following four options: Run from this USB Install to disk Check memory (I can't remember the last one) I have tried the top two. Both result in the screen going black briefly then windows 8 booting as per usual. Does anyone know how I may manage to overcome this problem?

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• grub rescue: grub not installed

  - by linda8

  I tried to install beside my windows 7. It didn't work. After installing it could not find the root directory and I got some other error messages... I just wanted my computer to be faster again so instead I decided to reinstall windows from recovery disk. It formatted the disk and installed windows again. The hard-disk has msdos structure now and the ubuntu partition is empty When I start up the computer grab is starting up an I get a grab rescue problem, but grab is no longer installed. How can I boot directly into windows? i can boot Ubuntu from an usb stick but I'm not able to install it anymore. I just want windows to work again... I'm hoping for advice... Linda

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• In China. Want to set up my own private proxy. Already have website/webhosting. Help please! n00b with respect to coding/programming, go easy on me [closed]

  - by user1725461

  I am in China and have used freegate in the past -- http://en.wikipedia.org/wiki/Freegate Recently I've been having too many problems with that and some other web-based proxies I usually use. I have a website that is hosted in the US which I can access from China. Is there an easy way for me to setup my own secure private proxy? I'm sick of all my internet problems and looking for a new workable solution. Thank you! PS: and I really hope this is the right place for such a question...

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• Wifi works perfectly on Windows, but drops on Ubuntu

  - by alecRN

  I have a dual-boot computer with Windows XP on one partition and Ubuntu 10.10 on the other. In Windows XP I can connect to a hidden wireless network (WPA-PSK AES) perfectly, and I was finally able to install the driver for the adapter on Ubuntu (RNX-N180UBE, hardware id RTL8191SU). It works fine when I first boot the computer and log in, but then after a few minutes the network suddenly stops working completely. If I try to reconnect it, the network manager claims to have connected, but in actuality it's still down. At some points, I have been able to connect to a public network even while the private network didn't work, but that eventually wouldn't work at all either.

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• video/audio output via HDMI Ubuntu 12.04

  - by lostNfound

  I've been out of the Ubuntu loop for quite a while now and have a completely new laptop now. Just installed Ubuntu 12.04 64-bit and would like to output my video and my audio via HDMI to my television. the following is the lspci | grep VGA for my computer. please tell me if there is any additional information needed and preferably how to obtain it and i will be more than happy to oblige. thank you in advance for your time and assistance in this matter. 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 01:00.0 VGA compatible controller: NVIDIA Corporation GF108 [GeForce GT 540M] (rev a1) Edit: every time i restart my computer, after a short moment, i get an error message stating something along the lines "sorry, jockey needed to close unexpectedly." after researching, i discovered jockey is the name of the "additional drivers," which after initial installation, ubuntu informed me of proprietary drivers available. those are no longer available, and this error continues to occur.

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• Sysprep a BizTalk Server VHD

  - by AbhishekLohani

  Hi All,   Sysprep creates a snapshot of a virtual machine with BizTalk Server 2010 installed for quick deployment on other virtual machines   Prerequisites Before using Sysprep, you should have some knowledge of using virtual machines with Hyper-V. You should also have a virtual machine with a clean, typical installation of BizTalk Server and all of its prerequisites. Sysprep will run on Windows Server 2008 and Windows Vista with SP1. Description Sysprep creates a VHD of a BizTalk Server 2010 installation (including the operating system and all prerequisites) for quick deployment on other virtual machines. An image created using Sysprep will choose a new computer name in order to join the domain the first time it starts. To get BizTalk Server running properly, it is necessary to update various instances of the computer name that are stored in the registry and databases. Please refer the Microsoft Links for Details :http://technet.microsoft.com/en-us/library/ee358636.aspx   Thanks Abhishek

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• How to get past black screen with mouse icon while installing on Gateway MX6920?

  - by tom kruse

  I have an old Gateway MX6920 laptop that got a virus on its hard drive so I put in a new one from another laptop. When i turn it on it tries to load Windows but fails so I'm going to try to put Ubuntu on it (because I heard it's a good OS). I downloaded the 32-bit desktop version of Ubuntu and burned it to a CD. I put the CD in the computer, went to the boot menu, and selected CD-ROM. The computer tries to boot but stops at a black screen with a mouse icon sitting in the middle of the display. I have no idea what's going on, so please help.

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