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  • Is it possible to make a persistent USB serial port regardless ofthe existence of the USB device?

    - by Keith Nicholas
    USB serial ports, especially devices which emulate serial ports, don't quite behave the same as old serial ports, which causes a few problems with some software. old serial ports, always existed, they never come and go out of existence. With USB devices that emulate serial ports, they come and go depending on whether they are powered / reset etc. Is there a way under windows to make the USB serial port permanently exist regardless of the presence of the device? (not just come back as the same name as it was before).

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  • How to set acpi=off for installation?

    - by Johan Helgø
    I'm trying to install Ubuntu 12.04 LTS 64bit from a USB created in Windows using the recommended software from pendrivelinux. The USB is tested on two laptops and works fine. The install does not work on my desktop PC, it either hangs with lots of text on the screen, or it just gives me a screen with garbled colors. Right now it hangs on "[3.925311] Initializing USB Mass Storage driver...", but it hangs on different spots every time I try. I know that acpi=off will fix this. On older versions, there used to be a pink screen with the icon of a keyboard, at that screen I could press ESC, and I would then get a long list of languages, I could choose English, and then I would get options for setting acpi=off, then install without any problems. This new install menu does not have those options. The (now black and white) "Installer boot menu"'s advanced options is blank. There simply are no advanced options. If I go to help, then press F6, I get to a help screen describing the different boot parameters. I see examples of writing "Install acpi=off" However, writing "install acpi=off" it gives an error saying "could not find kernel image: install". How can I install Ubuntu 12.04 with acpi=off? (Oh, btw, nothing happens if I press F6 in the "Installer boot menu")

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  • Can't install Apache 2.2.22 on Ubuntu 13.10

    - by B18C1
    My work environment requires Apache 2.2.22 instead of the latest version of 2.4. My machine is currently running Ubuntu 13.10. When I use Synaptic or apt-get it will not allow me to choose an older version of Apache than 2.4. So my question is, how can I force an install of Apache 2.2.22 on Ubuntu 13.10 using Synaptic or apt-get. When I do try to specify the version I get the following: sudo apt-get install apache2=2.2.22-1ubuntu1 [sudo] password for b18c1: Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: apache2 : Depends: apache2-mpm-worker (= 2.2.22-1ubuntu1) but it is not going to installed or apache2-mpm-prefork (= 2.2.22-1ubuntu1) but it is not going to be installed or apache2-mpm-event (= 2.2.22-1ubuntu1) but it is not going to be installed or apache2-mpm-itk (= 2.2.22-1ubuntu1) but it is not going to be installed Depends: apache2.2-common (= 2.2.22-1ubuntu1) but it is not going to be installed E: Unable to correct problems, you have held broken packages.

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  • Windows 7 System process reading/writing like crazy

    - by Mats Ekberg
    I have a problem that my windows 7 computer sometimes starts accessing the disk like crazy for maybe 10 minutes at a time. The process in question is the "system" process. I have disabled superfetch and hibernation on my computer, if that makes any difference. I disabled those to see if they were the cause of the problems, but no change. I have 6 GB of RAM and only the web browser was started when I took the screenshot, so I don't think it was thrashing due to page faults. Any ideas on how to find the cause of this?

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  • NTFS disk mounted as fuseblk in ubuntu 12.10 is very slow and a lot of errors when rsync. Is that not a rare thing?

    - by Pablo Marin-Garcia
    I am having problems with a NTFS disk mounted as a fuseblk in my ubuntu 12.10 through external usb3. When I did a 1.1TB backup with rsync the speed was 1-2MB/s (wiht a ext4 disk speed was 70 MB/s before and after trying the NTFS disk). Also after one hour errors started to appear: rsync: write failed on "xxx": No such file or directory recv_files: "yyy" is a directory #but this file is a FILE not a dir ??!! .... As this is the first time I have mounted the NTFS in linux for heavy usage (the data would be used in windows afterwards), I would like to know if this kind of thinks are common o was only that something became unstable in my system and a simply restart would probably have solved it. This leads me to the these questions: Can I trust fuse for manage NTFS disks? Or is a problem of the NTFS tools in linux not yet totally stables for writing? Do people is still suffering from low performance with fuse-NTFS vs ext4 (in the past I have read about people complaining about this)?

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  • Problem with Skype in Snow Leopard

    - by Am1rr3zA
    Ever since I upgraded my MacBook Pro from Leopard to Snow Leopard I have always had problems with Skype. When I start a video chat, Skype tells me that my camera is not installed on the machine (even though it clearly is). After searching the internet I have found some 'solutions' but none of them work. After trying them, it makes my camera feed appear as a blank, green image. How can I get Skype to function with the built in iSight with Snow Leopard properly? is there any body else face this problem?

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  • Cannot remove wireless network profile even though admin account is used

    - by David Karlsson
    On my windows computer which is connected to a company domain. I have problems with the wireless networking. First of all the computer fails to connect. Second of all I cannot remove the network from the list of wireless profiles. The properties window simply claims that "This network is administered by the Administartor Account". I am currently logged in as the local administrator. I have also tried creating a new admin account and still get the same problem when trying to remove the network. My computer has only the microsoft security essentials antivirus and some VMWare+virtual box connections that I can figure might interfere, but disabling realtime protection has not helped me on this. I also cannot delete the virtual network adapters from the control panel / network adapters...

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  • Is there any way to isolate the python2.7 , mod_wsgi installation from main environment

    - by user31
    I have many local virtual machines for building the django websites. I find it very hard to configure all the machines with mod_wsgi , python and all that installation issues. Is there any way that i can install even python 2.7 , mod_wsgi etc and all that inside the virtual environment folder so that i can just copy paste that folder in my live server and i don't need to mess with mos_wsgi , python 2.7 and other issues. Is it possible or even any close variation of that so that puting the site to live servers is very easy and everything which is needed by site should be included locally I also face many problems when i need to move the django sites across servers

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  • Agent admitted failure to sign using the key.

    - by Delirium tremens
    .ssh dir is chmodded 700, id_rsa.pub 600, id_rsa 400. I ran ssh-keygen -t rsa, imported key to launchpad and ran bzr branch lp:unity, but got error message: Agent admitted failure to sign using the key. Permission denied (publickey). bzr: ERROR: Connection closed: Unexpected end of message. Please check connectivity and permissions, and report a bug if problems persist. auth.log: Nov 28 20:23:13 ubuntu sudo: deltrem : TTY=pts/0 ; PWD=/home/deltrem/Documentos/repositories ; USER=root ; COMMAND=/usr/bin/bzr branch lp:unity Nov 28 20:39:01 ubuntu CRON[2959]: pam_unix(cron:session): session opened for user root by (uid=0) Nov 28 20:39:01 ubuntu CRON[2959]: pam_unix(cron:session): session closed for user root Nov 28 20:41:04 ubuntu gnome-screensaver-dialog: gkr-pam: unlocked login keyring

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  • "Boot has failed, sleeping forever." Suggest some solution for this.

    - by Lazer
    I downloaded Fedora from here. While trying to install it, I am getting this error: No root device found. Boot has failed, sleeping forever. I tried searching on it (found codehead and fedoraforum) and came to know that it is a known bug, but couldn't find any solution to it. Do you know any solution to this? OR Do you know a distribution of Fedora that does not have these problems? [I am trying to install Fedora on my Windows Vista machine]

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  • serving static assets via http is really slow compared to sshfs (apache2/nginx)

    - by s1lv3r
    After migrating to a new VPS I had some users complaining about slow loading images on their sites. After creating some test files with dd I realized that I can download all files via sshfs with full speed while downloads via web are painfully slow. The larger the file is and the longer the transfer takes, the slower the transfer speed gets. I thought I had some problems with Apache and just spend the whole evening with replacing Apache2 against nginx for static file serving - with no effect at all. No I/O wait states in top. Tons of RAM free, no high CPU utilization and hdparm shows a decent I/O performance at all times. I just have no idea anymore, what's happening on this server. This is a link to a demo file: http://master.dealux.de/file.tgz Anybody an idea what I can check out?

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  • VMXNET3 nic loses the ability to update ARP table after N hours

    - by Peter
    I have a fedora 18 VM that stops updating the arp table on eth1 after running for a number of hours to days. There are other VMs on the same hypervisor that can access all of the same networks without issue. A tcpdump of the offending NIC shows only ARP broadcasts but no responses. None of the other VMs on the vDS see the ARP broadcasts from the offending NIC. The only way I can currently solve the problem is to reboot the VM and then everything works for a while. I've tried changing the port on the vDS and even flipping the network configurations after I lose eth1's ARP table, but the ARP problem follows eth1 but I can access the machines that were originally on eth1. If I statically add the arp entries for machines on the same subnet I have no problems with connectivity. The Hypervisor is an HP BL49X series with flex-10 network modules. Has anyone seen anything like this before?

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  • Getting ROBOCOPY to return a "proper" exit code?

    - by Lasse V. Karlsen
    Is it possible to ask ROBOCOPY to exit with an exit code that indicates success or failure? I am using ROBOCOPY as part of my TeamCity build configurations, and having to add a step to just silence the exit code from ROBOCOPY seems silly to me. Basically, I have added this: EXIT /B 0 to the script that is being run. However, this of course masks any real problems that ROBOCOPY would return. Basically, I would like to have exit codes of 0 for SUCCESS and non-zero for FAILURE instead of the bit-mask that ROBOCOPY returns now. Or, if I can't have that, is there a simple sequence of batch commands that would translate the bit-mask of ROBOCOPY to a similar value?

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  • XAMPP pointing a file outside root folder

    - by Ravi
    I am using XAMPP for first time in Mac. Running out problems accessing other than root folder(htdocs).when I am placing my web application inside htdocs with default httpd.conf file it works when I try to point my web application url in httpd.conf it throws error I am aware that to modify the root folder I need to do changes to my XAMPP/etc/httpd.conf file With Default XAMPP MAC Settings, I am trying to change Server root,Document root and Directory in XAMPP/etc/httpd.conf file the following ServerRoot "/Users/ravi/Documents/Development/Backbone/backboneboilerplate" DocumentRoot "/Users/ravi/Documents/Development/Backbone/backboneboilerplate" <Directory /> Options FollowSymLinks AllowOverride All Order deny,allow Deny from all </Directory> <Directory "/Users/ravi/Documents/Development/Backbone/backboneboilerplate"> Options Indexes FollowSymLinks AllowOverride All Order allow,deny Allow from all </Directory> its throwing error when trying to start XAMPP httpd: Syntax error on line 54 of /Applications/XAMPP/xamppfiles/etc/httpd.conf: Cannot load /Users/ravi/Documents/Development/Backbone/backboneboilerplate/modules/mod_authn_file.so into server: cannot create object file image or add library

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  • First Look - Oracle Data Mining

    - by kimberly.billings
    In his blog, JT on EDM, James Taylor shares his analysis of Oracle Data Mining, including its new GUI and Exadata integration. While Oracle Data Mining has been available for a while, it is now easier to access and try via the Amazon Cloud. Using the Oracle 11gR2 Data Mining Amazon Machine Image (AMI), you can launch an Oracle Data Mining-enabled instance directly through Amazon Web Services (AWS) and connect to it using the Oracle Data Miner graphical user interface. The new Oracle Data Mining GUI, which will be available to beta customers soon, provides more graphics, the ability to define, save and share analytical "work flows" to solve business problems, and provides more automation and simplicity. Taylor comments that, "the UI looks to have a nice look and feel including graphical model development flows, easy access to the data, nice little micro graphs when browsing data records and more." On using Oracle Data Mining with Exadata, Taylor writes, "Oracle says that the use of the ODM routines in the Exadata kernel is faster than running a native ODM model in the database by a factor of 2 and that this increases as more joins are used. This could mean that ODM outperforms even third party in-database analytics." Taylor concludes his blog with a positive overall review, stating that "ODM is a nice product for Oracle database customers and well worth looking into. The new UI will only make it more so." Read the blog. var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www."); document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E")); try { var pageTracker = _gat._getTracker("UA-13185312-1"); pageTracker._trackPageview(); } catch(err) {}

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  • laptop overheating ran defraggler and now its not as hot

    - by Marko
    Trying to diagnose and fix an overheating Acer 5735 laptop, running speedfan and doing general workload to try and cause the overheat conditions. I notice that windows xp is badly fragmented according to defraggler, at 58% fragmentation. So I defrag whilst watching the speedfan window, which was at the start reporting high warning style symbols for all of the sensors. After the defrag, I rebooted and ran a few programs, and even defraggler again and the sensors in speedfan all reported green i.e. not high. Wondering if there is a correlation between windows fragmentation causing the hard drive to work harder and produce more heat inside the laptop? dont want to just assume that the problems are resolved, so either speedfan is not accurate enough or fragmentation can lead to additional hard drive heat? All comments or suggestions welcome.

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  • tweak windows 7 virtual memory and cache / caching settings

    - by bortao
    im on windows 7 64 bit, with 4gb of memory whenever i copy or deal with a big ammount of data, windows swaps out everything from memory to the virtual memory swapfile, to make room to data cache. the problem is: i dont really need caching of this data im copying, its being copied only once, cacheing this data won't help me. on the other hand, swapping out the programs will give me a big lag time whenever i want to use those open programs again. what i want: restrict data cache to a certain ammount, lets say 1gb, or reserve a certain ammount of memory, lets say 2gb, exclusively for running programs memory. my swap file is on a separate partition, but i still have problems with swapping time.

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  • tweak windows 7 virtual memory and cache / caching settings

    - by bortao
    im on windows 7 64 bit, with 4gb of memory whenever i copy or deal with a big ammount of data, windows swaps out everything from memory to the virtual memory swapfile, to make room to data cache. the problem is: i dont really need caching of this data im copying, its being copied only once, cacheing this data won't help me. on the other hand, swapping out the programs will give me a big lag time whenever i want to use those open programs again. what i want: restrict data cache to a certain ammount, lets say 1gb, or reserve a certain ammount of memory, lets say 2gb, exclusively for running programs memory. my swap file is on a separate partition, but i still have problems with swapping time.

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  • Cannot open any applications on windows server 2008 R2 Standard edition

    - by kishore
    I have a server running on Windows server 2008 R2. It is recently added as a member of a domain. I am not able to start any applications in thew server. When I tried to open Event viewer it errored out saying "The page file is to small to complete the action". I am experiencing same problem when I tried to open Sql server Management studio, task scheduler or any other application. The windows server serves as a production database server, but our applications are not experiencing any problems. Can someone please help?

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  • C# Simple Twitter Update

    - by mroberts
    For what it's worth a simple twitter update. 1: using System; 2: using System.IO; 3: using System.Net; 4: using System.Text; 5:   6: namespace Server.Actions 7: { 8: public class TwitterUpdate 9: { 10: public string Body { get; set; } 11: public string Login { get; set; } 12: public string Password { get; set; } 13:   14: public override void Execute() 15: { 16: try 17: { 18: //encode user name and password 19: string creds = Convert.ToBase64String(Encoding.ASCII.GetBytes(string.Format("{0}:{1}", this.Login, this.Password))); 20:   21: //encode tweet 22: byte[] tweet = Encoding.ASCII.GetBytes("status=" + this.Body); 23:   24: //setup request 25: HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://twitter.com/statuses/update.xml"); 26: request.Method = "POST"; 27: request.ServicePoint.Expect100Continue = false; 28: request.Headers.Add("Authorization", string.Format("Basic {0}", creds)); 29: request.ContentType = "application/x-www-form-urlencoded"; 30: request.ContentLength = tweet.Length; 31:   32: //write to stream 33: Stream reqStream = request.GetRequestStream(); 34: reqStream.Write(tweet, 0, tweet.Length); 35: reqStream.Close(); 36:   37: //check response 38: HttpWebResponse response = (HttpWebResponse)request.GetResponse(); 39:   40: //... 41: } 42: catch (Exception e) 43: { 44: //... 45: } 46: } 47: } 48: }   BTW, this is my first blog post.  Nothing earth shattering, I admit, but I needed to figure out how to post formatted code.  In the past I’ve used Alex Gorbatchev’s Syntax Highlighter with great success, but here at GWB I couldn’t get it to work. Windows Live Writer though, being a stand alone writer, worked with no problems.  For now, that’s what I’ll use.

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  • My Intel Core i3 frequently shuts down due to "Processor Thermal Trip error"

    - by explorest
    My Desktop PC running Windows 7 on Intel Core i3 dual processor machine started shutting down during the boot process a couple of days ago. I left it alone for about 48 hours and tried again. The boot process informed me about Processor Thermal Trip as being the cause of boot failures and suggested a Windows recovery process. I went through the recovery process which completed without problems. The PC booted normally and Windows 7 worked as expected but after 10 minutes it again tripped and now whenever I start it, it shuts down during the boot process. What should I do next?... is there a boot menu / setup settings that needs to be adjusted to avoid it... Or is there a hardware problem (which seems unlikely as the machine occasionally boots perfectly )?

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  • Is MozyHome Remote Backup known to slow down Windows Explorer?

    - by Kyle Estes
    Windows Explorer on my home machine is uber slow, and I suspect it is Mozy's fault. In the past Mozy has done some goofy stuff like placing file and folder icon overlays in Windows Explorer, which was really bugging me because I thought they were from TortoiseSVN (and I had uninstalled that!). Anyhow, does anyone else have Mozy installed? Is Windows Explorer really slow respond for you, say when you simply double click the hard drive to browse files? I'd also welcome any tips people might have on debugging why Windows Explorer might be slow (shell extensions known to cause problems, etc.).

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  • Mac OS X: pushing all traffic through a VMWare VM [closed]

    - by bj99
    I want to set up an Astaro (Sophos) UTM in a Virtual Machine. The Setup should be at the end the following: Cable Modem (one IP adress) | [Ethernet] Sophos UTM (running as VM [VMWare Fusion 5] on the MacMini) | [WIFI] Airport Express v2 (for sharing Local Network to wireless and wired clients) 1)| [WIFI] 2)| [Ethernet over Thunderbolt Ethernet Adapter]* Clients MacMini (Local File Server) *To have the Mini also protected behind the UTM So the setup process for the UTM works fine, but then the problems start: I just have one external IP (from my cable modem provider)== So if I put the VM in briged mode my Internet connection drops, because the MacMini also has its IP adress. If I put the VM to NAT mode the Mini itself is not protected by the UTM So: is there a way to hide the en0 interface(Ethernet) and the en1 interface (Wifi) from the MacMini, so that they not even appear in System Preferences Network section but are available to the VM? That way the Mini must connect to the en2 interface (Thunderbolt adapter) to make any Internet/LAN connection and I just use the given single IP from the Cable Modem. Thaks for any suggestions... Sebastian

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  • How can i get more user debug logging related to kerberos for alfresco?

    - by Maarten
    I am running alfresco community edition 3.4c on a debian linux. I have problems getting the kerberos authentication in order. The biggest problem is that do not seem to have any sort of user logs. what i am using already: log4j.logger.org.alfresco.web.app.servlet.KerberosAuthenticationFilter=debug log4j.logger.org.alfresco.repo.webdav.auth.KerberosAuthenticationFilter=debug log4j.logger.org.alfresco.smb.protocol=debug log4j.logger.org.alfresco.fileserver=debug I've also checked if the users actually reach the server, and they do, (also on a linux firefox outside of domain, i seem to be able to log in). Can anyone help me get more user logging?

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  • How to improve batching performance

    - by user4241
    Hello, I am developing a sprite based 2D game for mobile platform(s) and I'm using OpenGL (well, actually Irrlicht) to render graphics. First I implemented sprite rendering in a simple way: every game object is rendered as a quad with its own GPU draw call, meaning that if I had 200 game objects, I made 200 draw calls per frame. Of course this was a bad choice and my game was completely CPU bound because there is a little CPU overhead assosiacted in every GPU draw call. GPU stayed idle most of the time. Now, I thought I could improve performance by collecting objects into large batches and rendering these batches with only a few draw calls. I implemented batching (so that every game object sharing the same texture is rendered in same batch) and thought that my problems are gone... only to find out that my frame rate was even lower than before. Why? Well, I have 200 (or more) game objects, and they are updated 60 times per second. Every frame I have to recalculate new position (translation and rotation) for vertices in CPU (GPU on mobile platforms does not support instancing so I can't do it there), and doing this calculation 48000 per second (200*60*4 since every sprite has 4 vertices) simply seems to be too slow. What I could do to improve performance? All game objects are moving/rotating (almost) every frame so I really have to recalculate vertex positions. Only optimization that I could think of is a look-up table for rotations so that I wouldn't have to calculate them. Would point sprites help? Any nasty hacks? Anything else? Thanks.

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