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• Fresh install of 12.04 using USB stick booted into tty1

  - by croc

  I just installed 12.04 Alternate for the first time to give it a try using a USB stick burned with UnetBootIn. It installed without a problem. But it booted into a tty1 console without booting into a GUI. After logging into the tty1 console, I typed unity. It appeared that the system doesn't have unity desktop. How can it be solved? My installation didn't show any error. Something worth mentioning: During installation, I had to choose an option saying 'customize the system to your needs' something like that I don't remember correctly with options 'SSH server','Mail Server', 'Ubuntu Desktop',.....,'Manual selection of packages' etc. I chose 'Ubuntu Desktop'. I haven't encountered something like this in 11.04. To do an installation of Alternate iso using UnetBootIn, i used '12.04_Hdmedia' option of that software and had to change file extension of .ude to .udeb in /pool/main/l/linux that i found in Alternate ubuntu cdrom detect to go around with the cdrom detection problem. I have a 945G intel graphics.

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• Why does Windows 7 update fail with error 800706BE?

  - by parsley72

  I have 18 updates appearing for Windows 7 x64 but when I try to install any of them I get the error 800706BE. The Microsoft help that appears gives several solutions: Fix It button. This downloads MicrosoftFixit50123.msi from http://go.microsoft.com/?linkid=9666880 (963KB). After running it displays the message "This Microsoft Fix It has been processed". System Update Readiness Tool. This is actually in response to error 800B0100 which isn't the one I'm seeing. You download the file from http://windows.microsoft.com/en-US/windows7/What-is-the-System-Update-Readiness-Tool (362 MB). After running it says "Do you want to install the following Windows software update: Hotfix for Windows (KB947821)"

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• Sync Linux to Windows 2003/2008 Natively

  - by user26753

  Without using any external packages for Windows, can Linux synchronise it's clock to a Windows 03/08 Server natively? I've tried it using various NTP packages for Windows but would like to use just Windows software for this. EDIT: I've tried the below however it doesn't work. I've put TimeSource in /etc/hosts, stated server TimeSource in /etc/ntp.conf however when I do a service ntpd start it doesn't sync (it's 3 minutes out at the minute). I then stopped the NTPD and did a ntpdate TimeSource, thinking it would sync and then I'd start the NTPD once it's got the time, and it says: no server suitable for synchronization found. Though I can ping it. Any thoughts?

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• High Availability Clustering and Virtualization

  - by tmcallaghan

  I'm trying to understand how the various virtualization vendors (specifically Amazon EC2, but also VMware and Xen) enable software vendors to provide a real HA solution in the environment where the servers are virtualized. Specifically, if I'm running any HA application (exchange, databases, etc) I need to ensure that my redundant virtual "servers" aren't located on the same physical server. Using in-house virtualization solutions (VMware, Xen, etc) I can provision accordingly as well as check the virtual - physical arrangement. I could, however, accidentally "vmotion" to the same physical hardware. With EC2, I don't even have the ability at provision time to select different physical servers. Since their Cluster Compute Instances are 1 virtual server per physical server it seems to be the only way to guarantee I don't have a false sense of redundancy. Any ideas or thoughts would be helpful. What are others doing about this problem? If the vendors provided an API where I could get something as simple as a unique physical system identifier I could at least know if I'm going to have an issue. -Tim

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• I can write code...but can't design well. Any suggestions?

  - by user396089

  I feel that I am good at writing code in bits and pieces, but my designs really suck. The question is how do I improve my designs (in order to become a better designer). I think schools and colleges do a good job of teaching people as to how to become good at mathematical problem solving, but lets admit the fact that most programs taught at school are generally around 1000 - 2000 lines long, which means that it is mostly an academic exercise and no way reflects the complexity of real world software (a few hundred thousand to millions of lines of code). This is where I believe that even projects like topcoder/project euler also won't be of much help, they might sharpen your mathematical problem solving ability - but you might become a theoretician programmer; someone who is more interested in the nice, clean stuff, and someone who is utterly un-interested in the day to day mundane and hairy stuff that most application programmers deal with. So my question is how do I improve my design skills? That is the ability to design small/medium scale applications that will go into a few thousand of lines of code? How can I learn design skills that would help me build a better html editor kit, or some graphics program like gimp?

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• Determining where a file is being cached

  - by RoadieRich

  I've got a debian webserver running apache, from which I regularly download an executable using IE 8 on an XP virtual machine (over LAN). However, I realised that somewhere along the line that I've been repeatedly running the same version (and wondering why my changes weren't being displayed). A Ctrl+F5 in IE will let me download the new version (although the page is always updated with a simple F5). This makes me suspect that the caching is happening in windows/IE, but I'm not certain. Wherever it's happening, is there an easy way to prevent it at the server? Eventually, we're hoping to offer the software to the entire company, and we'd like to avoid having to tell everyone to do a Ctrl+F5 every time there's an updated version.

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• Freeze during Battlefield 3 - Probable Hardware issue?

  - by HendsteR

  my friend's notebook frequently freezes during BF3 sessions since ~1 1/2 months. It runs Win764Bit and he already reinstalled windows during the process, it didn't help. So we guess it might probably be a hardware issue. Now the question - which part of the hardware could effect a total freeze of the system WITHOUT getting a bluescreen? Or are there any known software issues he could also try? The hardware specs are: Acer 7745G Intel i7 720QM AMD Mobility 5850HD - Running Catalyst 11.6 now btw. (all drivers tested from 11.2 to 12.6 though) 4GB Ram 1.333MHz Oh and yeah, he just added that it crashes playing Diablo3 from time to time, too. Please help :)

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• Windows 7: How to stop/start service from commandline (like services.msc does it)?

  - by john

  I have developed a program in Java that uses on a local SQL Server instance to store its data. On some installations the SQL Server instance is not running sometimes. Users can fix this problem by manually starting the SQL Server instance (via services.msc). I am thinking about automating this task: the software would check if the database server is reachable, if not try to (re)start it. The problem is that on the same user account the Services can be stopped /started via services.msc (without any UAC prompt), but not via (non-elevated) command line. The operating system seems to treat services.msc differently: c:\>sc start mssql$db1 [SC] StartService: OpenService FEHLER 5: Zugriff verweigert (Access denied) c:\>net start mssql$db1 Systemfehler 5 aufgetreten. Zugriff verweigert (Access denied) So the question is: how can I stop/start the service from a java-program/command line without having my users to use services.msc (preferrably via on-board-tools)

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• What is the procedure to replace a failing hard drive in a RAID array?

  - by slayton

  3 years ago a co-worker setup a software RAID-6 array on Ubuntu 9.04 and I'm getting messages from the OS that the drive has bad sectors and should be replaced. I'd like to remove this drive and replace it with a new drive, however, I have never done this before and I'm terrified that in the process of fixing the array I'm going to end up ruining it. I know the device ID of the array and I know the device IDs of the individual drives in the array. Additionally I physically have the bad drive. What are the steps to replace the bad drive with a new drive and get the array running again?

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• about Linux read/write only permissions

  - by Bimal

  My question looks similar to another thread: Linux directory permissions read write but not delete Here, I want to create a directory where I can give the permissions like: A user can create/upload any files. A user can re-upload and overwrite the files. A user cannot remove the file anymore. I am on CentOS 5.5, basic user only. How can I do that? Or is there any third party software that can be installed to do this? Or, create a new process which will lock the permissions right after a new file is uploaded via ssh?

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• Ubuntu 12.10 and nVidia drivers don't like each other?

  - by mingos

  I decided to upgrade both my computers from Precise to Quantal. What a mistake that was. My laptop has a nVidia GT 330M card, while the desktop has an nVidia 9600 GT. In both cases everything goes great as long as I use the Nouveau driver (ugh!). Can't really play games (Amnesia... and hoping for Steam Beta participation...), even though it's OK for work. Now, ever since 9.04 or so, I just installed nvidia-current and all just worked. Since 12.10, after installing nVidia drivers, Unity won't start at all (hangs with only the wallpaper displayed, no cursor or widgets), Gnome Shell is permanently in fallback mode. Now, I have tried on both computers, with multiple clean installs on Ubuntu (two separate downloads, just in case), one from Ubuntu Gnome Remix. And additionally, Fedora 17, which seems to suffer from the same issue. Tried all nVidia driver suggestions available in Software Sources, and even compiled the drivers myself. I tried several versions of the driver to exclude an issue with the newest one. In my frustration, I have switched to Windows (which, ironically, "just works" with my hardware), but still hold a twin OS configuration on the desktop and would like to use Ubuntu again. So, can anyone point me to where the issue might lie?

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• How to open-source a project whose git repository has copyrighted media in the history?

  - by phyzome

  I want to release an audio fingerprinting software project under a free license, but the repository contains copyrighted audio files. The test cases also currently use these files. How do I release the code to the public with maximum version history but without violating copyright? Details: The code is versioned under git. We will collapse it all back into one branch before release. There are 400 MB of audio data. Some files are free-licensed music from e.g. Jamendo, others are MP3s from our personal collections. No matter what approach we take, we'll always keep an immutable copy of the original repo, so as not to destroy project history. Main question: How to handle the public release? Expunge all history of the files in question from the git repository and release the altered repo. (v64 pointed out a way to do this.) Alternatively, take a snapshot of the current state of the code and don't even bother having a public history of the pre-release code. Side question: How could we have avoided this dilemma in the first place, given that sometimes private code or media is needed for the early stages of a project?

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• Can I rent exclusive time on a powerful server running linux? [closed]

  - by Mark Borgerding

  My company is involved in a proposal that requires speed estimates of our software on a server with the latest & greatest processors. This is not the first time we've been in this situation. The servers themselves are too expensive to buy a new one every time, so we end up extrapolating from what we have. There are so many variables: processor generation & speed, memory speed, memory channels, cache configurations; it makes extrapolation difficult and error-prone. Is there a business that rents time on the newest servers? At least part of the time we'd need exclusive access to an otherwise quiescent system either via ssh shell access or unattended batch jobs. I am not looking for general cloud computing services. I don't need much time on the server, but it needs to be exclusive. And the server needs to be pretty cutting edge for a solid basis of estimate.

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• Netbook recomendations for a developer

  - by Joe

  I am thinking about getting a netbook for a secondary laptop. Ideally it would mainly be used for surfing/email/travel, but I would like it to be good enough to be able to run Visual Studio for when I am at conferences and the like. I as thinking it would be nice to be able to put a 16-32GB SSD in it, as well as 2GB of memory. Do you have any recomendations? Will a netbook even suffice, or should I upgrade to a small-form laptop? Edit: I don't need to be able to build software on it. It would just be nice to occasionally be able to try out new tools, APIs, or what have you without getting frustrated due to limited computing power.

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• Unable to connect to FTP sites

  - by Fariborz Navidan

  Since a few days ago I am unable to connect to any FTP site neither through Windows's FTP client nor through other software like WinSCP. But I can login through command line FTP client. I am using Windows 7. ESET firewall is disabled and did not find any blocking rule in windows firewall. A symptom is when enter ftp://my-server.com in windows explorer address bar it says "windows cannot access the folder" and there is no further info in Details section. Please help!

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• Why Does My Laptop Freeze Up When Docked?

  - by Michael Haren

  I have a Dell Latitude D520. First with Windows XP and now with Windows 7, it completely freezes/locks up if I dock it while it's awake. If I hibernate/sleep, dock, then wake/resume, everything's fine. I installed the Dell Notebook System Software for Vista (No Win7 version available) and updated the bios to the latest version but the problem persists. As long as I remember to put this thing in standby before I dock it, it's extremely reliable--it survives my daily commute and heavy use and typically only reboots a few times a month. Any other ideas for things I can try?

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• No Need to Disable Java, Update Instead

  - by Tori Wieldt

  Oracle has just released Security Alert CVE-2012-4681 to address 3 distinct but related vulnerabilities and one security-in-depth issue affecting Java running in desktop browsers.  These vulnerabilities are: CVE-2012-4681, CVE-2012-1682, CVE-2012-3136, and CVE-2012-0547.  These vulnerabilities are not applicable to standalone Java desktop applications or Java running on servers, i.e. these vulnerabilities do not affect any Oracle server based software. Due to the severity of these vulnerabilities, the public disclosure of technical details and the reported exploitation of CVE-2012-4681 "in the wild," Oracle strongly recommends that customers apply the updates provided by this Security Alert as soon as possible.  Developers should download the latest release at http://www.oracle.com/technetwork/java/javase/downloads/index.html   Java users should download the latest release of JRE at http://java.com Windows users can take advantage of the Java Automatic Update to get the latest release JUG leader John Yeary tweeted "I want to take a moment to THANK #Oracle for doing the right thing. Too often people don't say thanks enough when they get it right." Thanks for your thanks.  For More Information Oracle Security Alert for CVE-2012-4681 Change to Java SE 7 and Java SE 6 Update Release Numbers

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• Running Hyper-V and VMWare together

  - by Shiki

  I have two virtualization software on one of my laptops which is dedicated to Windows 8 development. A VMWare for generic virtualization and the Windows 8 like Hyper-V for the WP8 SDK. Unfortunately these softwares don't like each other. Is there a way to get them play along? The exact problem is that if I install the SDK, VMWare won't even update or run. There is only one way to make them work. Switch Hyper-V on and off. Which is one restart all the time.

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• how to design LAN connectivity between private and corporate ?

  - by maruti

  there is a bunch of servers connected to shared storage in a private LAN (10.x.x.x). this privateLAN is managed by a windows server (DHCP, DNS and directory services). how can these hosts be accessed from outside of this privateLAN? Eg. Remote desktop. can the NIC2 on each of the hosts be connected to the other public LAN (compromising speed or security? what are improtant considerations: additional hardware? like switches? routing&DNS software?

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• How do you hit modifier keys when touch typing?

  - by Bob Ueland

  I am a programmer and I want to learn to touch type. As all programmers know, using modifier keys like Control, Command and Alt are essential. When programming I think that every second or third word I use involves a modifier key. But most touch typing learning software do not address these keys, it is as if they do not exist. Not only do they not let you practice them, they do not even tell you which fingers to use to hit them. Actually there is a touch typing game that I use called StarTyper (http://lidenanna.com) that lets you practice modifier keys and even make up your own custom words containing modifier keys. But not even this game tells you which fingers to use when hitting the modifier keys. Has anybody addressed this problem. Or are there just homespun methods that work for one person but not for the other?

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• Should I use my real name in my open source project?

  - by Jardo

  I developed a few freeware programs in the past which I had signed with my pseudonym Jardo. I'm now planning to release my first open source project and was thinking of using my full real name in the project files (as the "author"). I thought it would be good to use my name as my "trademark" so if someone (perhaps a future headhunter) googles my name, they'll find my projects. But on the other side, I feel a bit paranoid about disclosing my name (in the least case I could be getting a lot of spam to my email, its not that hard to guess your private email from your name). What do you think can be "dangerous" on disclosing your full name? What are the pros and cons? Do you use your real name or a pseudonym in your projects? I read this question: What are the advantages and disadvantages to using your real name online? but that doesn't apply to me bacause it's about using your real name online (internet discussions, profiles, etc.) where I personally see no reason to use my real name... And there is also this question: Copyrighting software, templates, etc. under real name or screen name? which deals with creating a business or a brand which also doesn't apply to me because I will never sell/give away my open source project and if someone else joins in, they can write their name as co-author without any problems...

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• PMDB Block Size Choice

  - by Brian Diehl

  Choosing a block size for the P6 PMDB database is not a difficult task. In fact, taking the default of 8k is going to be just fine. Block size is one of those things that is always hotly debated. Everyone has their personal preference and can sight plenty of good reasons for their choice. To add to the confusion, Oracle supports multiple block sizes withing the same instance. So how to decide and what is the justification? Like most OLTP systems, Oracle Primavera P6 has a wide variety of data. A typical table's average row size may be less than 50 bytes or upwards of 500 bytes. There are also several tables with BLOB types but the LOB data tends not to be very large. It is likely that no single block size would be perfect for every table. So how to choose? My preference is for the 8k (8192 bytes) block size. It is a good compromise that is not too small for the wider rows, yet not to big for the thin rows. It is also important to remember that database blocks are the smallest unit of change and caching. I prefer to have more, individual "working units" in my database. For an instance with 4gb of buffer cache, an 8k block will provide 524,288 blocks of cache. The following SQL*Plus script returns the average, median, min, and max rows per block. column "AVG(CNT)" format 999.99 set verify off select avg(cnt), median(cnt), min(cnt), max(cnt), count(*) from ( select dbms_rowid.ROWID_RELATIVE_FNO(rowid) , dbms_rowid.ROWID_BLOCK_NUMBER(rowid) , count(*) cnt from &tab group by dbms_rowid.ROWID_RELATIVE_FNO(rowid) , dbms_rowid.ROWID_BLOCK_NUMBER(rowid) ) Running this for the TASK table, I get this result on a database with an 8k block size. Each activity, on average, has about 19 rows per block. Enter value for tab: task AVG(CNT) MEDIAN(CNT) MIN(CNT) MAX(CNT) COUNT(*) -------- ----------- ---------- ---------- ---------- 18.72 19 3 28 415917 I recommend an 8k block size for the P6 transactional database. All of our internal performance and scalability test are done with this block size. This does not mean that other block sizes will not work. Instead, like many other parameters, this is the safest choice.

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• Black Screen after installing recommended Nvidia drivers. What to do?

  - by former_Windows_user

  New to Ubuntu. Problem description: Until recently I had Windows on my computer. My hard disk is divided into two partitions. On the first one (app. 10 GB) I had my Windows XP On the second one (app. 30 GB) I have some data I tried to install Ubuntu 12.04 on the first partition (the smaller one). Since I wanted to keep the data on my second partition, I chose the third install option. During the installation process I deleted the data on partition one, created a new partition with the same size, formatted it as ext4 and mounted / on it. The installation continued fine and at the end I restarted and took the CD out when it ejected automatically (it could have been also before the restart). Ubuntu started but I noticed that my computer was slow. Then a prompt appeared telling me that I did not have the optimal NVidia drivers and recommended to install a specific one. I clicked on the recommended driver, installation went apparently just fine and at the end I had to restart the system again. I did it, Ubuntu started, asked for my password, I typed it, pressed Enter, the screen turned black and remained like that (only the cursor was there and I could move it). I restarted and the same thing happened again. Has anyone had such a problem before and was able to solve it? With Windows I always installed drivers from CDs after installing Windows. Are the same CDs going to work for Ubuntu too or I should find special drivers? P.S. During the installation I was connected to the internet and I agreed on installing updates and the third party software. In the time before I installed that problematic but recommended NVidia driver I checked that there was between 6 and 7 GB free space on the first partition where I installed Ubuntu.

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• When to run SYSPREP

  - by haxel

  I am attempting to set up a computer using an answer file created by the WAIK and resetting the settings with SYSPREP and had a quick question. We are wanting to use Norton GHOST for our deployments. When do I run the sysprep? I figure it is after I get the computer all set up with the proper updates/software/drivers but I have not been able to find a direct answer to this online. Do i run it after everything is set up and the system is ready to be captured?

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• Synced audio ouput on multiple machines? VLC? hardware solutions?

  - by zimmer62

  I'm wondering if there is any software or hardware solutions to synced audio or audio and video across multiple computers or devices on a network. I've seen Sonos, and it might be a good solution, but it's also a very expensive solution. I'd like to be able to play something with realtime audio output on one PC, but hear it on speakers throughout the house, being it the home theater receiver, or another computer in another room. I saw a solution using the apple iport express, but the latency was unacceptable for anything other than just music. I'd like to avoid running audio wires with baluns to a bunch of amplifiers scattered all over the place when I have cat5 run everywhere. Is anyone familiar with using this kind of process for whole home audio? The latency is a big deal for me, if I've got video attached to the sound (e.g. watching a hockey game)

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