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• desktop problems in 12.04

  - by joe

  I recently upgraded from 11.10 (i think that was the last version that was out) to 12.04 and ever since i have been unable to start my computer (hp pavillion dv2815nr) in the "normal" mode, but have had to start it using previous versions. Every time I go to start it, it has a plain red screen (which it does in the previous versions as well) and the desktop icons will not respond. Also, the task bar at top is essentially missing, only having a thin black line there, and also missing the icon bar that "pops out" when you scroll along the left side of the screen. Essentially, I'm locked out in normal mode. Nothing will respond.

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• Can't connect to wireless without typing sudo modprobe b43 in terminal

  - by user90889

  I just upgraded to 12.04 on an old ACER Travelmate 5320 using Broadcom 4311. I wasn't able to connect to the internet through the wireless for a few days. It didn't even display wireless networks. I was finally able to make it work by following the instructions found here: http://linuxwireless.org/en/users/Drivers/b43#supported However, each time I log on to the computer I have to go to the terminal and type sudo modprobe b43 to make the wireless work. Is there somehow I can avoid this? I have used Ubuntu for many years but always relied on other people to help me with the technical stuff. The terminal is alien to me so I literally follow online forum instructions without knowing what I'm doing. Also, I tried many many things before I managed to make it work. So I'm worried I may have installed something that now conflicts with whatever the sudo modprobe b43 does. Thank you

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• SkyDrive Pro Limits

  - by Sahil Malik

  SharePoint 2010 Training: more information I’m putting this here, because I know I’m gonna forget it :) Overall size limits - On an on premises installation, there are no fixed limits on storage. You can configure it as you wish. For Office 365 (SharePoint Online), the limit is 7GB per user. Number of items (documents and folders): You can sync up to 20,000 items in your SkyDrive (personal library). You can sync up to 5,000 items from other libraries, per library. In other words, you could sync 10 libraries (for example), with each library having up to 5000 items. Third, site limits: No fixed limits. It depends on your computer's resources. Hooray! and Happy SharePointing! Read full article ....

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• Is there a well grounded theory on backward and forward compatibility of formats, languages, grammars and vocabularies?

  - by Breton

  I have a friend who has the specific problem of building a case against the use of a custom HTML <wrapper> tag in some site's markup. Now, intuitively we can answer that use of such a tag is risky, as future HTML specs may define a wrapper tag with semantics that conflict with its use on the site. We can also appeal to a particular section of the HTML5 spec which also recommends against the use of custom tags for this reason. And while I agree with the conclusion, I find these arguments a little on the weak side, on their own. Is there some well grounded and proven theory in computer science from which we can derive this conclusion? Have programming language theorists created proofs about the properties of vocabulary versioning, or some such thing?

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• How Can I Disable Windows 7's Aero Performance Warnings?

  - by Jason Fitzpatrick

  You know your computer isn’t cutting edge, but there’s no need for Windows 7 to constantly remind you. Read on to see how you can disable its constant nagging to adjust your color scheme to improve performance. Today’s Question & Answer session comes to us courtesy of SuperUser—a subdivision of Stack Exchange, a community-drive grouping of Q&A web sites. Secure Yourself by Using Two-Step Verification on These 16 Web Services How to Fix a Stuck Pixel on an LCD Monitor How to Factory Reset Your Android Phone or Tablet When It Won’t Boot

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• How to make Bumblebee work with HP Pavilion DV6T-7000 Quad Edition with Intel HD 4000 and Nvidia GeForce GT 650M 2GB?

  - by user69469

  I just recently bought a HP DV6T-7000 Quad Edition. It has an Intel HD 4000 and a Nvidia GeForce GT 650M 2GB with Optimus. I read that I could use bumblebee to make optimus work, so I installed it. I also installed bumblebee-nvidia and nvidia-current from the ubuntu-x-swat/x-updates ppa. I rebooted, but when I tried to run anything with optirun, the computer would wait ten seconds or so, then do a hard shutdown. I got no log messages from bumblebee, Xorg, or optirun, either. I have purged and reinstalled bumblebee, bumblebee-nvidia, and nvidia-current. I have also set the turned off power management in the bumblebee.conf file to no avail. I am out of ideas about this, and I need both options. Any ideas would be much appreciated.

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• Looking for parallel programming problem

  - by Chris Lieb

  I am trying to come up with a problem that is easily solvable in a parallel manner and that requires communication between threads for a test. I also am trying to avoid problems that require require random waits, which rules out dining philosophers and producer-consumer (bounded buffer), two of the classics. My goal is for the student to be able to write the program in less than 20-30 minutes in front of a computer not knowing of the problem beforehand. (This is to prevent preparation more than to come up with something novel.) I am trying to stress the communication aspect of the program, though the multi-threaded nature is also important. Does anyone have some ideas? Edit: I'm using Google Go for the language and testing comprehension of the goroutines/channels combo vs an actors library that I authored.

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• Ubuntu for Internet radio

  - by user93100

  I am planning to set up a streaming server purely for internet radio using Icecast2. what software packages do i require during Ubuntu installation and any third party apps i may require. I am going to use BUTT(Broadcast using this tool) Encoder and would like to be able to run BUTT on any computer so that other people can broadcast to my server from anywhere. I am looking for tips or tutorials on how to achieve the above. I mainly need info on cofiguring Ubuntu Server and icecast2. Also GUI? if so what one. Preferablly lightweight. I am choosing Ubuntu for its level of security and reliability. I hope someone can help me as i plan to make this a community Radio station. Many Thanks Khz

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• How do operating systems… run… without having an OS to run in?

  - by Plazmotech Binary

  I'm really curious right now. I'm a Python programmer, and this question just boggled me: You write an OS. How do you run it? It has to be run somehow, and that way is within another OS? How can an application run without being in an OS? How do you tell the computer to run, say, C, and execute these commands to the screen, if it doesn't have an OS to run in? Does it have to do with a UNIX kernel? If so, what is a Unix kernel, or a kernel in general? I'm sure OSes are more complicated than that, but how does it work?

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• How to restore my D Drive

  - by buggi

  I need help in recovering one of my drives from my windows7 machine. I used to have two drives, c and d. I used D to save all my data. i have been using my laptop from 3years. and when I saw it today, i cant find D drive on my computer :( . When I opened the parititioning wizard it showed me that the space I allocated for D is there but as unallocated space. I badly need the data from D. Can you please suggest if I can use ubuntu to recover D? Thanks in advance.

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• Ubuntu 12.10 dual boot windows 7 not working

  - by Joseph

  When i install ubuntu, and the computer restarts it doesn't show the boot managaer so it always boots in windows 7. I tried to change the default os, and ubuntu wasn't even listed in it. Then I read a how to on it, it showed how to size the partions and make them correctly, but it still didn't work. I tried easyBCD and still no success. I've tried installing it about 4-5 times and i still can't get it. What can i do to fix it?

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• Safest way (i.e. HTTPS, POST, PGP) to send decryption keys through the web?

  - by theGreenCabbage

  I am in the final stages of development for my Revit plugin. This plugin is programmed in C#, and distributed via a DLL. One of the DLLs is an encrypted SQLite database (with proprietary data) that is in the form of a DLL. Currently, in development stages, the decryption key for the SQLite database is hardcoded in my main DLL (the program's DLL). For distribution, since DLLs are easily decompilable, I am in need of a new method to decrypt the DLL. My solution is to send our decryption keys from our servers securely to the host's computer. I was looking in POST, thinking it was more secure than GET, but upon research, it appears it's similarly insecure, only more "obscure" than GET. I also looked into HTTPS, but Hostgator requires extra money for HTTPS use. I am in need of some advice - are there any custom solutions I can do to implement this?

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• Does Ubuntu 12.04 supports for B75 boards?

  - by rail02000

  I want to build a new computer with Intel G840 CPU and Gigabyte B75M-D3H motherboard and install Ubuntu (or Kubuntu) 12.04 64bit on it. However, I'm worried about whether the chip is too new and whether that Linux Kernel now has support for it. According to the article [Phoronix] Intel Core i7 3770K Ivy Bridge Linux Performance Review ,the Linux kernel is ready to work on the chip. Existing Intel Sandy Bridge motherboards/chipsets are compatible with Ivy Bridge processors, but earlier this month Intel launched the new Panther Point chipsets that are already compatible with Linux too: the B75, H77, Z75, Z77, HM75, HM76, UM77, and HM77. But I didn't find further information or cases about running Ubuntu on the chip. So,is it OK to run Ubuntu on the board? Do I need to upgrade the kernel to a newer version (3.4 or 3.5 etc.) to get the system more smoothly? Or should I choose boards with H61 chip? Thank for your response!

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• How to bridge the gap between university and job requirements

  - by user1762636

  I study physics and computer science and both studies include minor programming tasks whereas larger tasks are only (potentially) a part of larger projects like for your thesis. When I look at job postings for scientific jobs e.g. in the area of HPC they usually ask for "extensive programming skills in C/C++ and HPC" or the like. This is what I would like to achieve, but frankly I don't know how. I don't mean to mourn, but you can imagine that studying physics/CS means having a busy schedule so I couldn't even work part time as a research assistant to get practice without negative influence on my grades. The second problem is that I lack ideas on what to code in my spare time. I would like to do something useful but even for open source projects you apparently need a whole lot of time and depending on the type of software a lot of experience to be useful. I would be grateful for any advice you can give me.

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• How do I recover files from U1 cloud

  - by MarkWW

  OK I have just stopped syncing a folder. This appears to have been a huge mistake. I did not realise the folder would disappear from my cloud storage. I assume (and hope) the sub-folders/files it contained still exists in the cloud. I hope they still exists in the cloud because they do not exist on my computer. I did not delete these files from the cloud (I have tried to recover deleted files - none are being recovered). Where are they and how do I get them back into My storage?

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• Leapfrog Crammer won't mount as a USB flash drive

  - by William

  I can't seem to get the Leapfrog Crammer study and sound system to show up as a flash drive under ubuntu so I can transfer stuff to it. I don't want to install the leapfrog bloatware, can someone help me with this? Additional Information: When I plug my crammer into my computer it shows a 1 MB file system with a link to download the crammer software. I want to know how to access the rest of the crammer's file system so I can transfer music to it. The crammer does not show any other partitions in natulius. According to an article on the internet, the crammed is divided into three partitions: One with a link to install the crammer software, one with all content(music, flash cards, etc.) and one for firmware. I want to know how to access the one with the content so I can add music to the player. Can anyone help me with this? Thanks in advance.

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• Xubuntu and other Debian based distros slow

  - by William V

  I have a Compaq Presario SR1950NX desktop computer with the AMD64 3800+ processor and 1GB ram and it seems that Ubunutu, Xubuntu and Lubuntu are all laggy. Things seem to be slow such as clicking on menus and opening programs and the UI renders in peices. When using the browser the system slows down considerably. I ran the TOP command and I do notice that xorg hits 30 to 40 percent cpu when running the browsers. I have tried these distros on a spare P4 machine and it is even worse. As long as I don't have a several things open at one time I can manage to get around although sluggishly. I also notice that I can't get debian based distros to install in 64bit (crtc6 failure) only in 32bit. Can anyone tell me what is it that I might be doing wrong? I have an integrated Nvidia card and have tried several of the recommended drivers which sometimes result in no boot screen upon reboot. Thanks

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• How to access UbuntOne when it asks for default keyring which has never been set?

  - by obu-tim

  I am trying to set up UbuntuOne on a new computer and after I enter the email and password, it asks for the keyring 'default'. I don't know what it is and I never set it. Makes it difficult to enter so it seems to be a counterproductive security default. I understand that if autologin is set the keyring is called. I tried setting the main user to need a password but if I reboot it doesn't ask for the password so it sort of autoboots still. So How do I set the keyring default password? If I can't set it I can't install UbuntOne

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• AMD Catalyst Beta Open Source Drivers

  - by FourZer0

  I'm a gamer with a pretty low-end computer, so I always update to the beta drivers to squeeze out every bit of performance I can get. I currently have 13.3 installed, but I want to install the 14.6 beta. I want to use the open source version, instead of downloading from AMD's website. How can I do that in the terminal? And please explain what the commands mean so I can do it on my own in the future. Thanks in advance!

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• Is it viable to become a contract programmer straight out of college?

  - by M G

  I have a Bachelor of Science in Computer Science and four months research experience designing and implementing a research project. I realize this is highly dependent on my skill set - which includes C, C++, Java, Python, and SQL. I feel I have an advantage in two ways: I am young and am not afraid to work overtime. I am willing to take lower pay to gather a client base/experience, and work nights/weekends to get a few projects under my belt. This may be cliche, but I feel that I can learn new technologies quicker than most. At the very least, I am not a slow study. With this being said, is it viable for me to become a contract programmer? Or do I need the 10+ year skill set that most contractors bring to the table?

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• eth0 not working on startup

  - by user4106

  Hi to all, This might sound strange but, working with my Lubuntu 10.04 i've experienced troubles when connecting to my eth0 newtwork. After some googling, i've found out that by writting in the CLI the following command: mii-tool eth0 -F 10baseT-FD and activating the eth0 in the toolbar (by clicking "activate eth0") everything works just fine. Well, up to now, i did not have any problem, because every time i turned on the computer i had to do this, but it was very little effort.But now, i would like to use the machine as a file server, accesing it by ssh, without monitor or keyboard. So, i won't be able to make this actions, and can't do this at startup because mii-tool needs root permissions. So, the question is: Do you know what does that command do, and how can id make that change permanent? Or do you know any other solution for my problem? I hope i was clear! If not, tell me and i'll try to be as clearer as possible. Thanks in advance!

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• Ubuntu Software Center is crashing while trying to install psychonauts

  - by GonzoDark

  I am having a problem installing Tim Schafers epic platform video game Psychonauts trough the Ubuntu Software Center. I have bought the game on http://www.humblebundle.com/ and I have used the new redeem option introduced in this bundle: "redeem your bundle on the Ubuntu Software Center." When I have downloaded approximately 2.1 GB of Psychonauts then Ubuntu Software Center starts to repeatedly crash and pop-up with a new crash report dialog every few seconds (before previous ones are closed and that will crash the computer after a few min, unless I stop the download). I also have a file-size bug, where Ubuntu Software Center tells me that I have downloaded 880,2 MB out of 133,3 MB I use the new Ubuntu 12.04 LTS and Ubuntu Software Center version 5.2.2.2 (©2009-2011 Canonical <--- That is also a bug, should be 2012 I guess) I hope someone can help me.

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• cannot install ubuntu 12.04 using wubi

  - by vicky

  I recently installed windows 7 on my pc and I have been unsuccessfully trying to install ubuntu 12.04 on it. I used to have dual boot system before both with windows and linux. I changed my hard drive from ide to ahci (default option) burned the ubuntu cd properly (not the .iso file) using the ubuntu 12.04 distribution I downloaded from the official site, set boot priority to cd/dvd but.. Nothing. It tries to boot from the cd, doesn't manage and turn to boot from the hard drive. I also tried wubi. I opened it through windows, got the window that asks me to choose "demo and installation" or "more on ubuntu" (something like that), I choose the first option, reboot manually my computer and it keeps returning on windows mode and doesn't boot from the cd. What can I do? Thanks!

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• ssh login information

  - by bob

  As the admin of my machine, I want users to be able to log into my computer with ssh, but I'm looking for a graphical way to be notified that a user is connected at the moment. If multiple users are connected, I want a list of connected users, their location, name, etc. This could be in the form of a forceCommand and 'alert' command when someone logs in, plus a icon saying how many people are connected right now in the notification bar, with the option to click on it to have more information about these users. Is there such a tool available in ubuntu, and if not, how to do it (I'm guessing it's not that difficult and could be done with under ten bash command lines) ?

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• reading parameters and files on browser, looking how to execute on server

  - by jbcolmenares

  I have a site done in Rails, which uses javascript to load files and generate forms for the user to input certain information. Those files and parameters are then to be used in a fortran code on the server. When the UI was on the server (using Qt), I would create a parameters file and execute the fortran code using threads so I wouldn't block the computer. Now that is web-based, I need to make the server and browser talk. What's the procedure for that? where should I start looking? I'm already using rails + javascript. I need that extra tool to do the talking, and no idea where to start.

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