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• Ubuntu installation always restarts

  - by user1880405

  I downloaded ubuntu-12.04.3-desktop-amd64.iso and mounted it to USB. I restart my laptop, select Install Linux and select language, then it says I have no internet, I press "Continue", and then I click "Install Ubuntu alongside Windows 8" and click "Continue", the computer just restarts and I see the again the same Try-Ubuntu-or-install-it menu. And hence I cannot install Ubuntu. I check md5 hash for iso and it's correct. Thanks for any help. P.S. I couldn't find answer anywhere else.

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• Are nested classes under-rated?

  - by Aaron Anodide

  I'm not trying to say I know something everyone else doesn't but I've been solving more and more designs with the use of nested classes, so I'm curious to get a feeling for the acceptablilty of using this seemingly rarely used design mechanism. This leads me to the question: am I going down an inherintly bad path for reasons I'll discover when they come back to bite me, or are nested classes maybe something that are underrated? Here are two examples I just used them for: https://gist.github.com/3975581 - the first helped me keep tightly releated heirarchical things together, the second let me give access to protected members to workers...

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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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• Laptop wakes while lid is closed and overheats

  - by user56601

  I'm running 12.04 on a toshiba L305D with athlon x2 (Already suspect this has something to do with it). My laptop will wake from suspend, presumably from wireless scanning. This is a serious bug as sleeping laptops are often inside bags, so the cooling system is effectively disabled. I can no longer seriously use Ubuntu when I have to worry about hardware damage every time I close the lid. There is shockingly lack of information about anything close to this. So many control panels have been removed or dumbed down, and everyone seems to want this behavior instead of the opposite, for servers or torrents of whatever. Well, most laptop users will 99% be likely to regularly put their laptop in a backpack or briefcase or other bag. Does anyone know how to fix this?

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• How do I debug a cluster running Microsoft server 2003?

  - by alcor

  I'm sole developer of a complex critical software system, written in Visual C++ 2005. It's deployed on a classical Microsoft cluster scenario (active/passive), that has Windows Server 2003 R2. If a server A goes down, the other one (B) starts and take the ownership of its duties. You have to know that: Both servers have the same Microsoft patches/fixes, same hardware, same everything. Both servers use the same memory storage (a RAID-6 through fiber channel). This software has a main module that launches the peripheral modules. if a peripheral module crashes, the main module restarts it. When I switch the application in one of the two servers (let's say the B server) two of the peripheral modules of the main applications just started to crash apparently without reason about 2 seconds after the start of the peripheral module. What could I do to analyze/inspect/resolve this weird situation?

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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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• Will keep google traffic on new site from old site when moving content from old site? [closed]

  - by user1324762

  Possible Duplicate: new domain, old links are 301’d from old domain to new, how will this affect my rankings? I have a site about bikers. Now I created a dating site for bikers. I don't need old site any more, I want to move all articles to this new dating site. So basically, this is not only moving content to new domain, but also to entire new site. What I am planning to do is to make 301 redirect for all 200 articles. For pages that are not articles, I will just put message that the site will be down soon. Do you think that I will get all google traffic from old site from those articles? Is there anything I should be aware and careful?

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• How to display time in the top panel?

  - by Mörre

  I thought I already had the time up there in the top bar, and it may have been so in previous Ubuntu versions (don't remember, my Ubuntu laptop is just one of three computers I use). Only that I just noticed - me being someone who never wears a watch, has the cellphone turned off 95% of the time and relying on the computer to tell the time - that there is no time being displayed anywhere, and I had expected it in the top bar on the Unity desktop. I searched around but found no obvious solution, but I'm sure someone immediately knows how I can get my time (back?) into the top bar?

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• Cannot get grub menu to timeout (or go away)

  - by Eric

  I am running Ubuntu 12.04. I cannot for the life of me get the grub menu (with options) to go away. I would like it to auto-boot into the first option. I've edited /etc/default/grub so that it looks like the following: GRUB_DEFAULT=0 GRUB_HIDDEN_TIMEOUT=0 GRUB_HIDDEN_TIMEOUT_QUIET=true GRUB_TIMEOUT=10 GRUB_DISTRIBUTOR=`lsb_release -i -s 2> /dev/null || echo Debian` GRUB_CMDLINE_LINUX_DEFAULT="quiet splash" GRUB_CMDLINE_LINUX="" After this, I ran sudo update-grub. Then I realized that I had grub 2, so I ran sudo update-grub2 (both make it look like they create the grub.cfg file successfully. I restart my computer and it goes back to the grub menu and just sits there until I make a choice. This is not desirable if the power goes out... :-) I also tried reinstalling grub using sudo grub-install /dev/sda - also unsuccessful

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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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• 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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• JS / HTML 5 Compatablity issue on iOS 6

  - by Dhaval

  I'm using HTML 5 to play video and there are some content before the video so I'm using flexroll to scroll that whole window. I'm checking it on iPad, now problem is that in iOS 5 its working fine but when I update to iOS 6 then screen is not scrolling only video is scroll up and down, content is as it is in the position. I can't understand what is the exact problem. Is that js compatibility issue or HTML 5 video compatibility issue. Can anyone please help me to figure out, your help will really be appreciated.

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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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• HTTP resource bundling/streaming practice

  - by icelava

  Our SPA (plain HTML and Javascript) makes use of huge volume of javascript and other resources that are downloaded via XHR. Given the sheer number of components and browser simultaneous request limits, we're thinking for ways to deliver our resources in a more efficient manner. A method we're considering is bundling several resources that logically form a coherent group into a single file; thus reducing down to only one XHR (per group). Furthermore to make it more responsive, we'd like to constantly inspect the partial responseText during the LOADING state, determining if a usable chunk (atomic resource) has already been downloaded, and make it available for deserialization/processing even before the XHR is DONE. (a stream-like experience) We're thinking surely somebody else would've considered roughly the same approach before, but haven't really come across any library/framework or container file format that is suitable for our scenario. Anybody else know of something similar?

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• Cannot boot Windows 7 after installing Ubuntu 13.04

  - by whowantsakookie

  So I boot up my computer after installing Ubuntu 13.04. Grub correctly shows me all available boot options and I am able to boot to Ubuntu. However, when I try to boot into Windows 7, grub hangs at a purple screen. I have an HP laptop. It came with all four primary partitions taken up by the Windows bootloader, the actual Windows partition, one called HP_TOOLS, and another for HP Restore. I was able to back up and delete HP_TOOLS and the recovery partition, and change my disk type from Dynamic to Basic (GParted doesn't recognize Dynamic drives). I then booted into a live session of Ubuntu and made two partitions with GParted: one large partition for storage space that I could use between the two operating systems (sda4), and another extended partition (sda3) which contained Ubuntu (sda6) and it's swap space (sda5). It currently looks like this: I'm not sure if the second paragraph is actually relevant, I just want you to know all the variables in the equation. Thank you in advance for helping this poor noob.

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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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• 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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• 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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• Ubuntu crash problem, need fix

  - by Brad

  Upgraded to 12.04 LTS Beta 2, on a Dimension E310. The unity Sidebar crashes while I use Software Center. The only way I can close Software center Is to either power off my computer or use force quit app on the unity side bar. Thats why I believe it's the sidebar crashing instead of the software center. But the other problem is, apport don't recognize the bug so nothing is sent. How do I file this bug? I looked in VAR/Crash and there was no crash report.

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• livecd won't boot 11.04

  - by user20006

  I bought a brand new computer yesterday (Toshiba Satellite Pro L770-10T : Intel Core i5 2410M, 2,3 GHz, 4096 Mo RAM, nVidia GeForce GT 525M) that simply won't boot any livecd I tried. I am using debian/ubuntu for a long time but this is the first time I can't boot a livecd Here is what I tried without success: Ubuntu 11.04 i386 and x64 both desktop and alternate Debian stable livecd old working ubuntu livecds including 8.x 9.x 10.x On ubuntu-10.04.2-desktop-i386.iso I had a kernel panic On 11.04 packages were corrupted although md5 and sha1 were correct I must add that those were burned on different cds CD-R or CD-RW. Any help would be greatly appreciated! Thanks in advance

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• USB Port not working for Ubuntu 14.04 LTS

  - by user292125

  I have recently installed Ubuntu 14.04 LTS on my system. But the usb port does not seem to be working. When I type lsusb in terminal, following is displayed on the screen: Bus 002 Device 114: ID 0951:1665 Kingston Technology Bus 002 Device 004: ID 413c:2106 Dell Computer Corp. Dell QuietKey Keyboard Bus 002 Device 003: ID 04ca:0062 Lite-On Technology Corp. Bus 002 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 001 Device 002: ID 8087:0020 Intel Corp. Integrated Rate Matching Hub Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub. However the disk utility shows no media. Kindly help me on this. Suggestions will be appreciated.

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• Continuing to code on large projects

  - by user3487347

  I am a hobbyist programmer, and I've started many medium - sized projects to work on just by myself. These include games, a raytracer, physics simulations etc. By the time these projects get to a certain size (around 5000 lines), I begin to slow down in adding features to the program. This is not because of a lack of ideas of what to implement in a program, but rather a struggle in how to go about it. In particular, I'm afraid of breaking what I already have working in order to implement a new feature. I've tried using version control like Git and Subversion, but these seem unnecessary when you are a one man team. I simply have a folder of "versions" of my program, one for each major change I make. How do I keep coding past this 5000 line mark? What about the 50000 line mark?

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• Dual boot to windows 7

  - by Riley

  i just installed ubuntu 12.10 alongside windows 7 but now my computer automatically boots to ubuntu. i want windows 7 as my default operating system. when i start up my laptop it shows me no settings or any screen asking me what operating system to use. the ONLY way for me to boot into windows 7 not is to hit f12 at startup to bring up which to boot from, select my hard drive then bring up the grub loader in ubuntu, then select windows 7 loader. when i go into msconfig in windows 7 ONLY windows 7 is listed under the operating systems... i see no ubuntu at all. please help this is really annoying! Thanks.

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• Outbound ports to allow through firewall - core requirements

  - by dunxd

  This question was asked before, but in a rather general way. I'm asking more specifically based on my current requirements. We have a number of remote offices made up of a bunch of PCs and an ASA 5505 which is used as firewall and VPN termination point. In the offices we share the internet connection with one or more other organisations over whom we have very little control, asides from the config on the ASAs. For a bunch of reasons I'd like to lock down these ASA 5505s to only allow outbound traffic to ports used by applications we know we need. I'm putting a standard config to roll out to all the ASAs, and if we need to open up ports for the other orgs we can do it on request. But I want to leave open the most commonly required ports so we can get up and running without waiting on other folks technical staff to get back. I plan to allow the following TCP ports to support email and web access, which I know everyone will need: POP3 (110 and 995) HTTP (80 and 443) IMAP4 (143 and 993) SMTP (25 and and 465) The question really is, what other ports do I need to leave open to allow for "normal" working? I've seen UDP port 53 for DNS as one. Are there any others that would be worth opening up? Just to note - I'll also be setting up monitoring systems to keep an eye on the ports we do allow. Any of the above could be misused of course. We'll also back all this up with signed agreements. But I'm aiming for a technical solutions where I don't have to start out with the full requirements of everyone we share connections with. See also: outbound ports that are always open

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• Managing a remote ubuntu server

  - by erdomester

  I hire an Ubuntu server which I access remotely and I purchased a domain for my webpage. I am totally new to this server thing and to Ubuntu as well. What applications should I install on the server? I need to transfer files to the server, I guess I would use FileZilla the same way I use it to upload files to my free website. But to have a username and password should I install an ftp server and create a user on Ubuntu? My website will send automated messages to users, so do I need to install a mail server as well? What other software should I install on the server apart from a firewall and an anti-virus? Should I partition the hard drive (3TB) and how? How partitions should I create and in what size for what applications? Btw I use Windows 7 on my computer, so I am basically a windows user.

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