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• Ubuntu 12.04 blank screen after login

  - by kgthenerd

  I just installed Ubuntu 12.04 LTS 64 bit on a machine, everything went well accordingly but after login it just gives me a blank screen. During startup after BIOS message it shows "Out of range" error and comes to login window after logon it's just a blank screen. even after somehow it comes to an empty desktop screen i dont see the Unity bar or anything like that (Can change wallpaper, and system setting though). And can't goto Console mode by pressing Ctrl+Alt+F1 - it returns "Out of range" error. System is new AMD Sempron with 2 Gigs of RAM has NVIDIA GeForce 6150SE-based graphic chipset. any ideas on this?

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• Email server for huge number of subscriber

  - by bogha

  My question is that my company is thinking of providing a free email account for each of its customers. As a new company we will assume that our corporate email system will be MS Exchange server which will support about 1000 employees. They are asking why not adding the customer list to be a part of Exchange users. My suggestion was to separate the two systems, for the corporate we can use Exchange but for customers (around 30000) we have to use a Linux based system. My only argument was that Linux can be used for enterprise services like this and Microsoft may fail. What do you suggest? And if you are with me on choosing Linux as the server platform, what do you suggest to use as an alternative for Exchange in Linux? Thank you.

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• how to stop a driver from running - it self protected and rootkit hidden

  - by Aristos

  I have this serous problem For the first time I can not stop a program from running. Something is on one laptop computer that is run as system legacy driver, and self protected and hidden on service as rootkit. Anything I try to remove fails. When a program or anti toolkit try to remove the hidden registry setting for make it stop I get this error : "a device attached to the system is not functioning" So any idea that can help me stop it from running, or even delete it on start up ? My one limitation is that the hard drive is on a laptop and I can not remove it and attact it to somewhere else. This program not let me, touch the registry, do not let me touch the file, do not let me touch the file, The move on boot fail to delete it, the rootrepeal fail to delete it, the rootkiet reveal from sysinternals fail to reveal it ! everything fails. Do how have any experience on this, or do you have any suggestion how to stop this driver from run ?

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• HDMI Sound for HTPC

  - by Brent Arias

  I have the (perhaps) the same problem as stated in this other HDMI sound to HTPC question. I tried the advice of clicking on the speaker in the system tray. I can see the HDMI audio device I want to use. That device claims to be functioning properly. But there is no sound, and it won't let me select it as the active audio device. When I click on the troubleshooter, it says that there are no speakers connected. I would think this is because my computer us unable to pipe sound through the video card (preventing the HDMI from carrying it), except that it truly claims that it has an HDMI sound device that is working correctly. So I'm not sure what is wrong at this point. Thoughts? My system is Windows 7 x64. In case it makes a difference, the video card I'm using is this GeForce GTX 560

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• Failed to start up after upgrading software in ubuntu 10.10

  - by Landy

  I've been running Ubuntu 10.10 in a physical x86-64 machine. Today Update Manager reminded me that there are some updates to install and I confirmed the action. I should had read the update list but I didn't. I can only remember there is an update about cups. After the upgrading, Update Manager requires a restart and I confirmed too. But after the restart, the computer can't start up. There are errors in the console. Begin: Running /scripts/init-premount ... done. Begin: Mounting root file system ... Begin: Running /scripts/local-top ... done. [xxx]usb 1-8: new high speed USB device using ehci_hcd and address 3 [xxx]usb 2-1: new full speed USB device using ohci_hcd and address 2 [xxx]hub 2-1:1.0: USB hub found [xxx]hub 2-1:1.0: 4 ports detected [xxx]usb 2-1.1: new low speed USB device using ohci_hcd and address 3 Gave up waiting for root device. Common probles: - Boot args (cat /proc/cmdline) - Check rootdelay=(did the system wait long enough) - Check root= (did the system wait for the right device?) - Missing modules (cat /proc/modules; ls /dev) FATAL: Could not load /lib/modules/2.6.35-22-generic/modules.dep: No such file or directory FATAL: Could not load /lib/modules/2.6.35-22-generic/modules.dep: No such file or directory ALERT! /dev/sda1 does not exist. Dropping to a shell! BusyBox v1.15.3 (Ubuntu 1:1.15.3-1ubuntu5) built-in shell(ash) Enter 'help' for a list of built-in commands. (initramfs)[cursor is here] At the moment, I can't input anything in the console. The keyboard doesn't work at all. What's wrong? How can I check boot args or "root=" as suggested? How can I fix this issue? Thanks. =============== PS1: the /dev/sda1 is type ext4 (rw,nosuid,nodev) PS2: the /dev/sda1 can be mounted and accessed successfully under SUSE 11 SP1 x64.

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• How should I use my new SSD drive?

  - by jasondavis

  I just built a new PC the other day. Specs... Processor: Intel i7-930 quad core CPU CPU Cooler: COOLER MASTER Hyper 212 Motherboard: AsRock X58 Extreme 3 RAM/Memory: 6gb G-Skill tripple channel DDR3 memory (3 sticks of 2gb planning to get another kit to make it 12gb total soon) Operating System Hard drive: Intel X25-M 80GB Mainstream SATA2 Solid State Drive Video Cards: 2 XFX ATI Redeon HD 4650 cards to run 3-4 monitors Case: Lian Li PC-B10 Midtower case Power Supply: Antec TruePower New TP-750 Blue 750W Operating System Windows 7 Pro 64bit Not sure if the specs are helpful at all but I posted them just in case. So I got everything put together and running great so far but I need some advice/ideas/help/tips. I got the SSD drive in hopes of using it strictly for my windows 7 install along with all my other programs I install. I am then going to get another drive or 2 just for data (video,music,photos, etc). So my plan is to just install the new data drives and then in windows 7 I will change my "My documents" "My Music" "My Video" "MY Photos" library's to be located on the data drives instead of the OS SSD drive. I would ultimately like to install all my programs with my windows install on the SSD drive and then create an IMAGE of the drive and then 6 months down the road if things are sluggish I can just wipe the drive and restore my IMAGE with all my programs and settings in tact still. So here are some questions now. 1) How can I verify that TRIM is working on my new SSD? 2) Is there anything above that I missed that I should be doing? I think I once read that there is a page file or some sort of file that windows changes a lot and that it should be moved off f an SSD an onto my data drives. DOes anyone know what I might of heard? If you do can you explain the pros and cons of doing such a thing as well as how to possibly? 3) Any tips or advice to get the best performance from all this, I built a pretty nice system and I just want to make it stay that way as long as I can.

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• How did what appears to be a virus get on my computer? (explanation of situation enclosed)

  - by Massimo

  My system is Windows XP SP3, updated with the latest patches. The PC is connected to a Cisco 877 ADSL router, which does NAT from the internal network to its single static public IP address. There are no forwarded ports, and the router's management console can only be accessed from the inside. I was doing two things: working on a remote office machine via VPN and browsing some web pages on the Cisco web site. The remote network is absolutely safe (it's a lab network, four virtual servers, no publicly accessible services and no users at all; also, none of what I'm going to describe ever happened there). The Cisco web site... well, I suppose is quite safe, too. Suddenly, something happened. Strange popups appears anywhere; programs claiming they're "antimalware", "antispyware" et so on begins autoinstalling; fake Windows Update and Security Center icons pop up in the system tray. svchost.exe began crashing repeatedly. Then, finally, after some minutes of this... BSOD. And, upon rebooting, BSOD again. Even in safe mode. Ok, that was obviously some virus/trojan/whatever. I had to install a new copy of Windows on another partition to clean things up. I found strange executables, services and DLLs almost anywhere. Amongst the other things, user32.dll and ndis.sys had been replaced. A fake software called "Antimalware Doctor" had been installed. There were services with completely random names or even GUIDs (!), and also ones called "IpSect" and "Darkness". There were executable files without an .exe extension. There were even two boot-class drivers, which I'm quite sure are the ones that finally caused the system to crash. A true massacre. Ok, now the questions: What the hell was that?!? It was something more than a simple virus! How did it manage to attack my computer, as I am behind a firewall and was not doing anything even only potentially harmful on the web at the time?

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• Is it possible to change error messages for users connecting to network printers?

  - by eric.s

  We are cleaning up our print server (Win XP). To test that printers are no longer really there we have set up some tests. These tests have left us with 176 questionable printers. We have now set Print access to Everyone to Deny. Testing shows this gives the user a 5 Access is denied. message. We would like to change this message for the user, so when they call our workstudy's who answer the phone do not interpret this as a computer rights management issue and can route the call properly. Is it possible? Is this error number system wide, or just for printing errors? If it's not a system wide error where might the string for this error be?

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• Why most supercomputer using linux?

  - by sdc

  http://news.bbc.co.uk/2/hi/technology/10187248.stm almost the entire supercomputer using Linux as operating system.

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• Time machine folders won't restore recursively

  - by Brian Postow

  I have a Snow Leopard system with Time Machine. Every so often I need to look at an old folder, so I go in and try to restore it, usually to a different location. What I end up with is an empty folder of the appropriate name. none of the files, nothing. It doesn't give any error messages. The files ARE there, because I can see them, also, if I go in via the mount point, and trace down through the file system, I can do a filecopy of the folder, and everything turns out fine. However, that seems like a bad idea. so, I'd like to know why he "right" way doesn't work... I believe that it used to work. It's also possible that it only doesn't work for certain folders. I haven't tested extensively.

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• Why does diskpart set the volume attributes on all volumes?

  - by Nick

  I was trying to migrate a Win7 OS from a HDD to a SSD. I've created 2 partition with 1024KB offset, with diskpart: 100MB System Reserved and a 60GB for C:. I've cloned their contents using Easeus Disk Copy. I've loaded the Windows 7 Boot DVD, and wanted to use diskpart to drop the letter for the System Reserved partition and make it hidden. select volume 0 detail volume attribute volume set nodefaultdriveletter attribute volume set hidden These 2 attribute set commands actioned on both volumes (0 and 1, MSR and C:) instead of the selected one, and viceversa. I've tried to clear these attributes from volume 1, but it cleared them also from volume 0. Why does DiskPart have this behaviour?

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• Ubuntu SSH issue

  - by palani

  Hi, I have the ubntun machine... under my /home/user/.ssh i have my id_rsa.pub key... i carefully copied that key and paste my key to respository Git account. After that i try to connect from locat system to my git respository i got the following error warning: Authentication failed. Disconnected; no more authentication methods available (No further authentication methods available.). . I removed SSH in system and re-enable and did agin.. but no luck.... I have no idea what's happening with my SSH key ....can any one please tell me on this... Note : i noticed in my home /home/user/.ssh && /home/user/.ssh2

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• Ubuntu SSH issue

  - by palani

  0 Hi, I have the ubntun machine... under my /home/user/.ssh i have my id_rsa.pub key... i carefully copied that key and paste my key to respository Git account. After that i try to connect from locat system to my git respository i got the following error warning: Authentication failed. Disconnected; no more authentication methods available (No further authentication methods available.). . I removed SSH in system and re-enable and did agin.. but no luck.... I have no idea what's happening with my SSH key ....can any one please tell me on this... Note : i noticed in my home /home/user/.ssh && /home/user/.ssh2

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• Can Solaris RBAC roles be ported to Linux using SElinux only?

  - by Jimmy

  We are migrating an application from Solaris to Linux and the main user is allowed, through the use of RBAC roles, to run a few system commands like svccfg/svcadm (chkconfig on redhat). Is it possible, using only SElinux (no sudo), to allow a normal user to run chkconfig off/on (basically give it the ability to add remove services) ? My approach was to try to create an SElinux user with a corresponding SElinux role that manages the app's domain/type and is allowed to transition to all other domains required to run chkconfig, tcpdump or any other system utility usually restricted to root access only. All my attempts so far have failed, so my second question would be where could I find good documentation that applies to this specific problem ?

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• How do Windows 7 encrypted files look like?

  - by Sean Farrell

  Ok this is kind of an odd question: How do Windows 7 (Home Premium) encrypted files look like "from the outside"? Now here is the story. An acquaintance of a freind of mine got a nasty virus / scareware. So I wiped out my PC technician cap and went to work on it. What I did was remove the drive from the laptop and put drive into my external drive bay. I scanned the drive and yes it was loaded with stuff. That basically cured the infection and I could start the system back up. To check if it cured the problem I wanted to see the system while running. There where two user accounts, on with a password and one without (both admin users !?!). So I logged into the unprotected user and cleaned up the residual issues, like proxy server to localhost in the browser config. Now I wanted to do the same for the password protected user. What I noticed that from my system and the unprotected user account the files of the protected user looked garbled. The files are something like 12 random alphanum chars, but the folders looked ok. Naive as was thought this might be how encrypted files looked "from the outside". (I never use Microsoft's own security features, so how would I know. TrueCrypt is one big blob.) Since the second user could not be reached, I though sod it and removed the password from the account. (That might have been a mistake, I know.) Now I did the same clean up tasks and all nice and fine; except for the files which where still "encrypted". So I looked into many Windows Encrypted Files recovery posts and not all hope is lost, since I should be able to extract the certificate and with the password regain access to the files. Also note that windows did "only" prompt me that removing the password would be insecure, not that access to encrypted files would be lost, like it is claimed in most recovery articles. Resetting the password did not help and I gave up for the night. The question that nagged me half of the last night was, what if the files are not encrypted, but the scare-ware encrypted / destroyed the files? I don't want to spend hours of work trying to recover files that are not recoverable. The ting is that the user does not remember turning it on and aren't the files marked in blue and the filename is readable? Many thanks for input from users who have more knowledge about WEF...

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• What would be the best way to correlate logs and events on several hosts?

  - by user220746

  I'm trying to build a log correlation system on multiple hosts. SEC seems interesting but I don't know if it will cover my needs. How could I correlate system events, logs, network events, etc. on multiple hosts at the same time, in real time? Examples: If 5 failed logins happened on host A the last minute and if firewall B has denied lots of access on differents ports on A, then we assume there is a potential attack in progress on A. If the Apache service on host A didn't receive any request for the last N minutes and Apache service on host B did, then the load balancing could be faulty.

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• SQL Server NETWORK SERVICE account permissions

  - by RemotecUk

  My SQL Server Windows service is set to use the NETWORK SERVICE account. The server is installed to C:\Program Files\Microsoft SQL Server\MSSQL10_50.MSSQLSERVER\MSSQL. However looking at the permissions on that folder, NETWORK SERVICE does not have any permissions. The groups which are allowed access to that folder are... CREATOR OWNER - who is this? SYSTEM - sounds fine - so that Windows can access the folder I presume? SQLServerMSSQLUser$Computer_Name$MSSQLSERVER - this is the interesting one - what is this? Administrators Users If NETWORK SERVICE is a user with minimal permissions on the system and looks to the O/S as someone connecting from a network how does it have permissions to access any files in the SQL Server install folder? Thanks.

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• Why is idle windows VM using so much CPU?

  - by Jeff Shattock

  I have 2 VMs running as guests on a KVM virtualization platform running on Ubuntu 10.04. One VM is an Ubuntu 10.04 system, the other is a Windows 7 system. When both machines are completely logged out, the Linux machine uses 1% CPU, the Windows one 45-50%, according to top. The graphs in virt-manager seem to back this up. Theres nothing installed on the Win7 image that would be running in the background; its as fresh as can be. Why is the Windows VM using so much more than the Linux VM, when both are logged out and idling?

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• ATI Radeon Drivers works with which linux distribution and version?

  - by amit.codename13

  I have ATI Mobility Radeon HD 5850 graphics card. Almost every new linux distribution seems to have an issue with it, when i install the drivers. Working without utilizing the graphics card leaves me so unproductive. So i made a plan to use older versions of linux, any distribution suitable as a desktop distribution. UPDATE: The kind of problems that i am facing are, 1) After installing drivers the system boots and hangs, 2) There are unusual lines over the screen 3) After upgrade system doesn't start properly(hangs the usual old way) The kind of answers i am looking for is, distribution X(the newer the version the better) doesn't have the above problem after installing drivers for ATI Mobility Radeon HD 5850 graphics card. UPDATE: The new drivers released by AMD seems to fix all the issues, although they are still beta Thanks

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• Shared storage solution for our sql server backups

  - by Gokhan

  We have 3 clustered sql servers. We have 5+ multi terrabyte databases and their backup files (compressed using quest litespeed) are hitting over 600gb each, We are required to keep at least a week or two weeks (if we can) of weekly full backups and then 6 days differential backups, and a week or 2 weeks worth of log backups local. We are currently limited to 2TB volumes from our san team, we can have multiple volumes but they are expensive ($200 per raw TB per month) and having to deal with many backup volumes instead of a single big volume is difficult. I think if we could have a shared network storage of 20TB+ raid 10 or so for all our servers for keeping the backups and another department will copy them to tape from the network storage and delete files according to the retention period would be good, if this box would be a build in operating system (even unix a complete file storage system) that would be good. What do you guys think, does this make sense to you, is there any manufacturer that sells a storage product like that which that work in a clustered environment? Thank you

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• PID:4 using Port 80

  - by CyberOPS

  I was trying to install Zend Server CE on my computer but when I got to the point were I need to choose the port for my Web Server it says: "Web Server Port: 80 Occupied". So I decided to check what is using Port 80 with CMD by typing: "netstat -o -n -a | findstr 0.0:80": TCP 0.0.0.0:80 0.0.0.0:0 LISTENING 4 I check for PID:4 in Task Manager's Processes and Services. Seems PID 4 is "System". So, what I want to know is how can I stop "System" (PID:4) from using Port 80? INFO: I am using: Windows 7 64bit; Zend Server CE 5.5.0

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• Mailman bounces go to me, do not unsubscribe user! (MacOS Server)

  - by vy32

  I run a large mailing list (30,000 users). Every month I get a whole slew of bounces in my mailbox from the "mailing list memberships reminder" that get sent out. I thought that these were supposed to go to the program and automatically unsubscribe people, not go to me. We are running a standard unmodified MacOS Server installation. Here is a typical bounce: From: Mail Delivery System Subject: Undelivered Mail Returned to Sender To: [email protected] This is the mail system at host mail.COMPANY.COM. I'm sorry to have to inform you that your message could not be delivered to one or more recipients. It's attached below. For further assistance, please send mail to postmaster. If you do so, please include this problem report. You can delete your own text from the attached returned message. The mail system ... Any idea what to do?

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• Hiding Files in Windows

  - by frbry

  Hello, Currently, I'm developing a system which will extract some files from an SFX archive (files that will be used for another app). I want to make the extracted files hidden, so the person which has find the location of the exe couldn't get the files which will be in same directory with the exe. I know i can apply attrib +h to the files but if the user turns on "show hidden and system files" option in Windows, the files will be visible. Isn't there any method to overcome this? Any suggestion is welcomed. Thanks.

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• how to restore grub

  - by takeshin

  During copying files via lan my Ubuntu Server 10.04 hung up and I had to reset the computer. After reboot, I got: Grub error 17, so I tried the rescue alternate CD, but I got a info, that no partitions were found on the disk. I used testdisk to restore the partitions. Using fdisk -l shows the partitions now, but when the system boots up I does nothing but displays: L234: When I plug the drive to another computer, it is not automatically mounted and I can't access the data. What to do now? How to restore the grub and boot up the system?

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• SCSI driver installation trouble

  - by Vicky

  I tried to install the driver of Adaptec 39320A-Ultra 320 SCSI card in Win2003 Server R2 SP2 in a DELL PowerEdge 2950 Server. I selected the driver from the list of drivers present in windows. But it says that the device could not be started(Code 10). I tried to put the card in a system that already had the driver installed. It worked fine. So there is no problem with the hardware. I even tried downloading the driver from the manufacturer website. When I try to select install from path and install that driver, it tell no matching driver found. When I install the default driver from windows, it shows the card in SCSI group of device manager, but with an ! symbol. Also the device ID in driver details was different from that of the one present in other system where it insalled fine. Any suggessions to solve it?

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