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• Dark screen when wake / Unable to control screen brightness

  - by John

  Running Ubuntu 11.04 on Lenovo ThinkPad with an Nvida graphics card. The unit goes to sleep when the lid is shut. (The unit goes to suspend mode (not to disk/hibernate), AC gets turned off, running on battery) Upon lid-open sometimes the screen is almost too dark to read. I'm really not sure of the exact cause, (very low batt??). The only fix is a reboot. The screen brightness buttons have never worked in Ubuntu. I have messed w/ the power management preferences. No change. At one point I messed w/ the gnome settings. No change. I have tried a few cmds: echo 9>/sys/class/backlight/acpi_video0/brightness setpci -s 00:02.0 F4.B=10 xgamma -gamma .75 None of these help. Most have zero effect. I think it is and acpi thing, but that is just a guess. I'm out of idea's, and looking for suggestions. Thanks

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• Supervisor HTTP Server Port Issue.

  - by Catalina

  I have supervisor setup to manage a few processes. It works perfectly fine when I boot my server, however when I stop it and try to start it again it fails and give's me this error msg: * Starting Supervisor daemon manager... Error: Another program is already listening on a port that one of our HTTP servers is configured to use. Shut this program down first before starting supervisord. For help, use /usr/bin/supervisord -h ...fail! I'm running nginx on port 80 and 4 web servers on ports 8000, 8001, 8002, 8003 Does anyone have any idea of what is going on? When I reboot everything works fine.

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• PostgreSQL under Mac OSX Lion. Wrong userpass?

  - by Matt

  I'm completely helpless, maybe you guys can help me out. I installed PostgreSQL under my new MacOSX Lion. When I try to connect to my localhost with pgAdminIII.app it says: Error connecting to the database: FATAL password authentication failed for user postgres I just have no idea what to do? Non of my passwords work. Neither my adminpass nor "postgres" nor anyhting else. I tried to install it again via the console where I found this helpful link: http://www.peerassembly.com/2011/08/...resql-on-lion/ However the problem is, that when I try to run createuser -a -d _postgres the same password problem appears again. I just can't seem to find a solution to this. Always wrong password. Btw. I have a new User called "PostgreSQL" on my machine after I installed postgres. Any ideas? I'm so stuck and I really need to make this work.

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• foobar2000 truncate media library

  - by MartinM

  Hi, I want to start using the media library feature of foobar2000 v1.0 and added one music folder, which contains a couple of subfolders with music of different albums. I restricted the filetypes to *.mp3;*.flac. Now my problem is that I don't want all albums/folders in my media library. But I can't seem to find an option to remove a particular album from the library. Do you have an idea what I can do? I thought about adding just the appropriate folders, but that would take a ages because one can only add one folder at a time :( Thanks -Martin

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• run two apache servers on one computer

  - by harry_T

  I would like to run two XAMPP apache servers and mysql on one Windows computer. My first idea was to run one under directory XAMPP, the other under XAMPP_B. Why you ask? I have two applications that have to be in the "root" directory of localhost. Both servers do not have to be active at same time, so I don't think I will have any conflicts I will have to modify my.cnf in mySQL httpd.conf, apache_start and maybe other config files as well. Or maybe someone can suggest a better way...

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• Dynamic procmail filters

  - by WombaT

  i need procmail to place incoming mail into specific folder depending on some set of rules. I know how i can accomplish this, but i need to write static set of rules in a specific file. What i really need is to configure procmail to use rules stored in mysql database. How i can do this? I've read a bit about that and one solution i found is to pipe message to a php/perl script and return a folder name to place message. But i have completely no i idea how to use php script as a rule and then use its return value.

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• Samba new file ownership, permissions configuration

  - by Martin Melka

  I have recently installed Samba on my server. Now I have a question about permissions and how to set it up. Currently I mount the Samba shared drive to my laptop with this line in /etc/fstab: //<host>/share /mnt/melka-server-data/ cifs username=<usrname> password=<passwd> _netdev 0 0 This works, as I can read from the files and create them (as root). The problem is when I want to create files as a regular user. I always get a Permission Denied error. These are ll outputs of the mounted folder: magicmaster@magicmaster-kubuntu:/mnt$ ll total 8 drwxr-xr-x 3 root root 4096 lis 11 14:15 ./ drwxr-xr-x 26 root root 4096 ríj 26 11:01 ../ drwxrwxrwx 8 magicmaster magicmaster 0 lis 12 22:12 melka-server-data/ and the inside: magicmaster@magicmaster-kubuntu:/mnt/melka-server-data$ ll total 4 drwxrwxrwx 8 magicmaster magicmaster 0 lis 12 22:12 ./ drwxr-xr-x 3 root root 4096 lis 11 14:15 ../ drwxrwxrwx 5 magicmaster magicmaster 0 lis 12 09:35 downloads/ drwxrwxrwx 2 magicmaster magicmaster 0 ríj 28 12:57 lost+found/ drwxrwxrwx 15 magicmaster magicmaster 0 lis 12 09:45 movies/ drwxrwxrwx 2 magicmaster magicmaster 0 lis 1 21:15 newest/ drwxrwxrwx 3 magicmaster magicmaster 0 lis 2 23:14 photos/ drwxrwxrwx 2 magicmaster magicmaster 0 ríj 30 12:44 software/ -rw-r--r-- 1 nobody nogroup 0 lis 12 22:12 zdar I called sudo chown -R magicmaster:magicmaster melka-server-data/ to try and change all the files to belong to me. Then the file zdar was created by magicmaster just by calling touch. I got the Permission Denied, but it was still created, though it belongs to nobody and I can't write into it. When I create a file as root, it still belongs to nobody, but at least I can write into it. What am I missing? I didn't notice anything in Samba config that would be related to this and I don't like the idea of having to log on as root in order to copy files.. Thanks

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• Ubuntu 11.10 power management does not recognize removal of power supply!

  - by sema

  I have a Lenovo Ideapad Z370 with Ubuntu 11.10 and the battery status indicator shows wrong information. Problem: The indicator always shows that the power supply is connected, even if it's not connected. The battery charges and discharges normally. However, the status information is wrong. When charging, the "time to charge" decreases, and when discharging the "time to charge" increases. If the power supply is connected the power statistics show: "Supply Yes" "Online Yes" If it is not connected it shows: "Supply Yes" "Online No" My trials: I tried reinstalling the indicator applet, but that doesn't help. Searching for solutions or similar problems didn't point out any help. Background: The problem occured after I switched the battery mode in Windows. (I use a dual boot system.) Lenovo drivers allow a "battery runtime mode" for maximum runtime and a "battery health mode" for maximum battery lifetime. I initially used the runtime mode, tried the health mode for some time, but switched back to the runtime mode. The problem occured after switching to health mode. Does anyone have an idea what is wrong? The problem is relevant for me as I get no information when battery status low and the computer runs out of energy without shutdown or hibernation. This is really a problem for me!

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• PuTTY/SSH: How to Prevent Auto-Logout?

  - by feklee

  My ISP's SSH server (Debian 2.0) logs me out after 35 minutes of inactivity, when connected with PuTTY (Windows XP). This is a big problem when I utilize the server for port-forwarding. The final messages displayed in the terminal: This terminal has been idle 30 minutes. If it remains idle for 5 more minutes it will be logged out by the system. Logged out by the system. PuTTY options that do not help: Sending of null packets to keep session active. Seconds between keepalives (0 to turn off): 30 [x] Enable TCP keepalives (SO_KEEPALIVE option) Any idea how to avoid the auto-log-out? Should I try another SSH client?

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• Ubuntu boot problem/unity failure

  - by Kenny

  So here I am sitting in a big pile of muck...over the last 2 days things have just been going from bad to worse with version of Ubuntu 12.10. So 2 days ago I was fiddling around with kismet and airmon-ng. I had added a bunch of libraries, I remember adding GTK+, Glib, Pango, etc. After restarting the other day my desktop opened fine but my background was changed to the default and none of my files on the desktop were visible and the top bar and side bar were not visible or functioning. The window managers were still working. I then tried reinstalling my nvidia drivers to see if that would change anything, it did not. Then after doing some searching online I found something that suggested I try deleting the file "libgtk-3.so.0". I deleted this and tried to restart the computer. Upon restart, I was greeted by a black screen with some writing saying something about -starting clamAV [OK] -problem with Apache Server could not verify correct...something... - checking battery state [ok]. After it gets to battery state it just stops and sits there indefinitely. So to sum, I cannot login to ubuntu because it just sits at this black screeen. If anyone has any idea as to what is going on and how to fix it please let me know. Thanks!

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• Windows 7 disc not recognized by DVD drive

  - by Ed Manet

  My machine is a recent model Systemax, less than 2 years old. It came with Vista 32bit and I bought Windows 7 Home Premium Upgrade for it. When I insert the Windows 7 DVD into the drive, it churns a little but does not recognize the disc. If I double click the DVD drive icon, it prompts me to insert a disc. I tried a different DVD (Office 2007) and the drive recognized the disc. I tried the Windows 7 disc in my Dell laptop and it recognized the disc. So basically, the disc is good and the drive is good, but they don't like each other. I tried to boot to the Windows 7 DVD and the system did not see it. I turned off the Lightscribe service and that didn't help. Does anybody have an idea what's wrong here? Thanks.

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• bind tmux prefix to OS X cmd key (or any other binding)

  - by rubenfonseca

  Hi all. I'm used to iTerm2 (or Terminal.app for this case) on OS X. But I want to move to use tmux (or screen, but the problem is similar to both apps). So my idea is to have a single iTerm tab with a tmux session opened with multiple tabs. To do the transition I have a basic feature I need to configure on tmux: switch the the tab 'n' by using cmd + n (like Firefox, Chrome, iTerm2 itself, etc) However I can't find a way of mapping the cmd key on the mac keyboard. I first tried to implement cmd as a prefix key, with no success. I've tried setting set-option -g prefix M-a (hoping for Meta-a) set-option -g prefix ^a (hoping for ^ to work) but nothing works. Is this possible? I don't really need to bind the prefix to cmd, but I want to be able to change tmux tabs with cmd+n. Thank you

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• How to analyze data

  - by Subhash Dike

  We are working on an application that allows user to search/read some content in a particular domain. We wanted to add some capability in the app which can suggest user some content based on the usage pattern (analyze data based on frequency and relevance). Currently every time user search or read something we do store that information in backend database. We would like to use this data to present some additional content to user. Could someone explain what kind of tools will be required for such a job and any example? And what this concept is called, data analysis? data mining? business intelligence? or something else? Update: Sorry for being too broad, here is an example SQL Database (Just to give an idea, actual db is little different with normalization and stuff) Table: UserArticles Fields: UserName | ArticleId | ArticleTitle | DateVisited | ArticleCategory Table: CategoryArticles Fields: Category | Article Title | Author etc. One Category may have one more articles. One user may have read the same article multiple times (in this case we place additional entry in the user article table. Task: Use the information availabel in UserArticle table and rank categories in order which would be presented to user automatically in other part of application. Factors to be considered are frequency and recency. This might be possible through simple queries or may require specialized tools. Either way, the task is what mention above. I am not too sure which route to take, hence the question. Thoughts??

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• Using local proxy to specify used NIC on Windows 7?

  - by Nico

  I'm running Windows 7 and have 2 NIC installed, both are connected to the Internet (nic#1 LTE, nic#2 DSL). Windows 7 will only allow me to specify a binding order and a metric on which interface to chose but i can't specify this on an application level. My Idea was to use a local proxy server and use the proxy server whenever i want to use nic#2. I tried wingate and free proxy, both applications will let me chose the interface i want to use but this setting seems to have no effect? This is how i configured the applications: http://imageshack.us/photo/my-images/69/freeproxysettings.jpg/ http://imageshack.us/photo/my-images/811/wingateproxysettings.jpg/ Is what i'm trying to do in anyway possible?

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• Didatic approaches to teach versioning with Git

  - by Herberth Amaral

  I have already taught versioning with Git, but I think it could be more enjoyable for the guys I teach if I use another approach to teach them. The guys I mentioned before were used to working with SVN and I tried to teach Git based on SVN. Not such a good idea. It seems that some guys/teams which use SVN need a re-education on version control when they're learning Git or another DCVCS. In another attempt, I tried to show a scenario where a development team try to work without a (D)VCS and then I showed how their lives could be easier if they used a (D)VCS. I had the impression that part of the audience left the presentation without a clue what I was talking about. I've taught other classes on other subjects without problems, so I think this is not a issue with me as a teacher, but with my method. I know Git and versioning as well I know the other subjects I've presented to the other classes. So, basically, how to teach Git/DCVCS? Start with some diffs/patches and manual versioning and then teach how it can be more productive with Git? Start with Git object model? Or try to start with some pretty commands and try to save some time? To be clear: I'm looking for approaches on how to teach DCVCS (focusing on Git) effectively, based on real experiences.

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• udhcpc doesn't assign ip address

  - by Diab

  i have a board running linux 2.6.28 and i have one Ethernet interface (eth0) i want dhcp to assign dynamic ip to this interface. i have busybox with udhcpc in the file system and the kernel has the "Pack Socket" enabled so i copied the scripts from "busybox-1.14.1/examples/udhcp" to my board on "/etc/udhcpc/" (i created this directory) and when i run : ifconfig eth0 up the interface is up but without ip address, then running udhcpc -i eth0 -s /etc/udhcpc/sample.script i get the following: note : sample.script contains : "exec /etc/udhcpc/sample.$1" # udhcpc -i eth0 -s /etc/udhcpc/sample.script udhcpc (v1.14.1) started Sending discover... Sending select for 192.168.10.198... Lease of 192.168.10.198 obtained, lease time 691200 but when i check with ifconfig i can see that it didn't assign the ip address to eth0. anyone have an idea why udhcpc didn't assign the ip ? Thanx

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• How to go about scheduling a task in windows 7 to change wireless connection

  - by Skindeep2366

  This may or not be something that can be done. I cannot find anything on the wireless connection manager built into windows 7 let alone methods for passing params into it. Problem is as follows: I have 2 wireless routers. One provides internet access, the other provides sole access to the local network. Every day at 4am the main system creates a backup in 2 locations. One is a External usb drive, the other is a location on the network. This is all cool if it is remembered to change over to the local network router before leaving. But if it is forgotten the roof will collapse, the walls will burn, and I will be... well you get the idea. Solution: there is already a custom event that fires a automated backup program at 4am everyday. I need someway to force the wireless network to use the correct connection at say 3:58am everyday. Any ideas????

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• VMWare Fusion cannot connect to the NAT connection on my Mac

  - by FFish

  I have been using VMWare Fusion on my Mac to check out my websites on localhost. Now I can't connect anymore with the NAT connection. There seems to be a problem with my IP address or Mac address? I have no idea what causes this, it was working fine before!? In the XP (SP2) VM, in the taskbar I see the Local Area Connection with the yellow warning icon. The bubble says: "This connection has limited or no connectivity. You might not be aisle to access the Internet or some network resources. For more information, click this message." Doing that opens up the Local Area Connection Status panel. In the Support tab, when I click the repair button I get following message: "Windows could not finish repairing the problem because the following action cannot be completed: Renewing IP address." Any help would be greatly appreciated.

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• Mod_rewrite pretty url when domain/foo is a directory

  - by ModRewriter

  Starting with something as simple as: RewriteRule ^(.*)$ index.php?page=$1 What if I also want the following to work: RewriteRule ^/foo$ /index.php?page=foo #/foo IS a directory This seem to work ONLY if the R flag is set, but then the full non-pretty url is written. Thus it seems I can REDIRECT existing directory, but not rewrite them... Maybe with an .htaccess inside the directory itself? Or some PHP magic in /foo/index.php like header(/index.php?page=foo)? Will it work? Will it be HTTP standard/search engine optimized? Please help! PS: The oddest idea occurred to me: redirecting /foo to /not-a-dir, and then rewriting /not-a-dir to /index.php?p=foo should theorically work... But... Come on... Really?!?

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• Compiling C++ code with mingw under 12.04

  - by golemit

  I tried to setting up compiling of the C++ projects under my Ubuntu 12.04 by mingw with QT libraries. The idea was to get executable independent from variations of target Windows versions and development environments of my colleagues. It was successfully implemented under OpenSuse 12.2 with mingw32 and some additional libraries including mingw32-libqt4 and some others. Fine. However when trying to do the same under Ubuntu 12.04 with mingw-w64 including latest libraries QT-4.8.3 copied from Windows there were always errors. No luck. The typical errors in these attempts can be seen in attachments. The commands used: qmake -spec /path_to_my_conf/win32-x-g++ my_project.pro make Can someone give a hint of the problem source? I would appreciate a good advice. Serge some exctracts from LOG: ./.obj/moc_xlseditor.o:moc_xlseditor.cpp:(.rdata$_ZTV10GXlsEditor[vtable for GXlsEditor]+0xec): undefined reference to `QDialog::accept()' ./.obj/moc_xlseditor.o:moc_xlseditor.cpp:(.rdata$_ZTV10GXlsEditor[vtable for GXlsEditor]+0xf0): undefined reference to `QDialog::reject()' ./.obj/moc_xlseditor.o:moc_xlseditor.cpp:(.rdata$_ZTV10GXlsEditor[vtable for GXlsEditor]+0x104): undefined reference to `non-virtual thunk to QWidget::devType() const' ./.obj/moc_xlseditor.o:moc_xlseditor.cpp:(.rdata$_ZTV10GXlsEditor[vtable for GXlsEditor]+0x108): undefined reference to `non-virtual thunk to QWidget::paintEngine() const' ./.obj/moc_xlseditor.o:moc_xlseditor.cpp:(.rdata$_ZTV10GXlsEditor[vtable for GXlsEditor]+0x10c): undefined reference to `non-virtual thunk to QWidget::getDC() const' ./.obj/moc_xlseditor.o:moc_xlseditor.cpp:(.rdata$_ZTV10GXlsEditor[vtable for GXlsEditor]+0x110): undefined reference to `non-virtual thunk to QWidget::releaseDC(HDC__*) const' ./.obj/moc_xlseditor.o:moc_xlseditor.cpp:(.rdata$_ZTV10GXlsEditor[vtable for GXlsEditor]+0x114): undefined reference to `non-virtual thunk to QWidget::metric(QPaintDevice::PaintDeviceMetric) const' ./.obj/qrc_images.o:qrc_images.cpp:(.text+0x24): undefined reference to `__imp___Z21qRegisterResourceDataiPKhS0_S0_' ./.obj/qrc_images.o:qrc_images.cpp:(.text+0x64): undefined reference to `__imp___Z23qUnregisterResourceDataiPKhS0_S0_' collect2: ld returned 1 exit status

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• Input Handling and Game loop

  - by Bob Coder

  So, I intercept the WM_KEYDOWN and other messages. Thing is, my game can't/shouldn't react to these messages just yet, since my game might be currently drawing to the screen or in the middle of updating my game entities. So the idea is to keep a keyboardstate and mousestate, which is updated by the part of my code that intercepts the windows messages. These states just keep track of which keys/buttons are currently pressed. Then, at the start of my game's update function, I access these keyboard and mouse states and my game reacts to the user input. Now, which is the best way to access these states? I assume that windows messages can be sent whenever, so the keyboard/mouse states are constantly being edited. Accessing say a list of currently pressed keys in the keyboard state the same time another part of the code is editing the list would cause problems. Should I make a deep copy of a state and act on that? How would I deal with the garbage generated though, this would take place every frame.

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• github team workflow - to fork or not?

  - by aporat

  We're a small team of web developers currently using subversion but soon we're making a switch to github. I'm looking at different types of github workflows, and we're not sure if the whole forking concept in github for each developer is such a good idea for us. If we use forks, I understand each developer will have his own private remote & local repositories. I'm worried it will make pushing changesets hard and too complex. Also, my biggest concern is that it will force each developer to have 2 remotes: origin (which is the remote fork) and an upstream (which is used to "sync" changes from the main repository). Not sure if it's such a easy way to do things. This is similar to the workflow explained here: https://github.com/usm-data-analysis/usm-data-analysis.github.com/wiki/Git-workflow If we don't use forks, we can probably get by fine by using a central repo creating a branch for each task we're working on, and merge them into the development branch on the same repository. It means we won't be able to restrict merging of branches and might be a little messy to have many branches on the central repository. Any suggestions from teams who tried both workflow?

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• Removed password from Windows 7, now I cannot login using Remote Desktop

  - by Niels Brinch

  I removed the password from the only account on my Windows 7 computer and now I get the following message when I try to log in. "Possible reasons are blank passwords not allowed". I did some research and found out what I should have done (disable the policy to allow blank passwords) but now I'm already logged out and cannot get back in. Does anyone have any suggestions? Update Thanks for all the answers. I actually think the reason I couldn't login with blank password was because I was logging in with Remote Desktop. I had no idea that made a difference, so didn't think it would be relevant to mention. When I went directly on the physical computer, it did not stop me from logging in without a password.

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• How do I install hiphop-php in CentOS 6?

  - by Dai

  I've been trying to install hiphop-php on CentOS 6 with no luck. I found an .rpm for it but it fails dependency checks on boost which fails to install because it depends on curl which fails to install because it can't overwrite /etc/lib64/libcurl.so.4 I can't remove the current curl version because half the system seems to depend on it. Has anybody had any luck doing this? It's driving me mad. I tried compiling from source but that's even more hellish and I really have no idea what I'm doing anyway.

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• exchange 2003 to 2007, recipient update services

  - by Jeff

  going to try my best to explain: our exchange 2003 was migrated to exchange 2007 (was not here for the migration). Looking in active directory sites and services - services - Microsoft exchange - company - address list container - recipient update services i have two recipient update services 1) recipient update service (enterprise configuration) 2) recipient update service (my-domain) my guess is one of these is left from the old exchange 2003. (im guessing this because the migration was not done properly, the exchange server was never actually uninstall, it was just taken offline, and then later disposed of). could having two of these cause me issues, and if so, how do i know which one i could get rid of ? Im asking because i honestly have no idea. it might even be nothing. thanks

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