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• Wireless option grayed out in Windows Mobility Center

  - by thomasvdb

  We currently have a Lenovo ThinkPad L512 which can't connect to wireless networks. He simply indicates he can't find any networks. Other notebooks (also ThinkPad L512-notebooks) in the company do find the network so nothings wrong with the configuration of the wireless router. As indicated on answer.microsoft.com, I should check Windows Mobility Center and enable the entry "Turn Wireless On". Unfortunately this option has been grayed out. How can I enable this option? There isn't a physical switch on the laptop to turn on the wireless.

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• Network Performance issue

  - by qubemarker

  We have three Ubuntu 10.04 servers. One server is a storage server and the other two servers are configured as clients. The storage server has a good amount of capacity and it is integrated with windows Active directory server for Authentication. I am uploading some video files from both clients to the server and when I am uploading data from any one client alone I get about 26 MB/s data transfer rate. When I upload data from both the clients simultaneously I am only getting about 8 MB/s from each client. I have gigabit ethernet cards in all of the servers and a L2 Managed gigabit switch for connectivity. I don’t know why the data transfer rate is decreasing so much in simultaneous read and write. I have tried all of the TCP stack related settings suggested here. Can any assist with getting better read/write performance out of this setup? Any help is appreciated.

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• Is there a feature in Nagios that allows Memory between checks?

  - by Kyle Brandt

  There are various instances where there are values I want to monitor with Nagios, and I don't care as much about the value itself, but rather how it compares to the previous value. For instance, I wrote one to check the fail counters in OpenVZ. In this case, I didn't care about the value that much, but rather I cared if the value increased. Another example might be switch ports, I would be most interested to get alerted about the change of state of a port (Although perhaps a trap would be better for this one). For my OpenVZ script, I used a temp file, but I am wondering if there is a better way? Maybe Nagios has some variables that plugins (check scripts) can access that are persistent across checks?

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• monitor internet bandwidth on LAN

  - by Dimal Chandrasiri

  I'm on a office network and there are around 12 PCs that are connected to a switch and then to a Prolink Router. Now the Internet connection is very slow and I'm the one who manage all the computers. I want to monitor bandwidth usage of each computer on the LAN. how can I achieve this using my computer. I cannot install any software on the client computers other than mine. I tried wireshark but, it only shows my network usage so there is no use with the data I get from it. Is there any specific software that I can use within my PC to get the bandwidth details of other computers. I'm on a windows 7 x64bit PC with admin privileges. Thank you.

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• Network connectivity issue

  - by kubiej21

  I am a novice cisco user and I am trying to investigate as to why one of our connections went down. We have a fiber network ring that is operating just fine. Connected to this ring via ethernet, is a lone 3560. This connection has worked flawlessly for the past year and a half. This morning, I noticed that I could not connect to that remote switch. I checked the configurations on both switches, and nothing has changed (as I expected). In the field, the port lights were flashing, indicating that some sort of communication is occurring. There is only 1 ethernet cable that has been run between these two locations, so testing an alternate path is not possible. What else can I do to fix this connection?

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• How to make a backup VPN server?

  - by akalenuk

  I have a small VPN network with a bunch of clients working mostly with each other and a VPN server. Everything works fine, except, obviously I can't shut VPN server down without breaking the network. I have a spare machine, which worked as an VPN server for the same network before so it is signed with the same SA as the first one and basically configured just the same as the first one. Technically I can make my clients work with it with little adjustment (by setting remote in etc/openpvn/clientx.conf), but it would be great make this switch automated. So basically I want two VPN servers running in the same network to work completely interchangeable without clients even knowing this. Can I do this with VPN or should I dig deeper into physical network layer?

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• is using Hosts for resolving a sql-server more performant?

  - by Ice

  Hi, we have a legacy application which uses a access.mdb with hundreds of ODBC-connected tables on a sql-server. the access.mdb contains nothing else than these odbc-connections. Now we consider to use a virtual sql-servername for these odbc connections and resolve it in the local hosts-file with the ip-address of the real sql-server. Like this we can easy switch between a test-sql-database server and the the server for production in changing one single entry in the hosts. EVERYTHING works fine and now comes the question: Could it be that this is more performant because there is one single point on resolving the sql-server (name or ip-address)? Is there something like a network-cache / DNS-Cache? peace Ice

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• Why does MS-DOS tells me I need extended memory and thinks a file is read-only? [closed]

  - by Jake Inc.

  I am running a .COM file on a MS-DOS 6.22 boot USB drive When I run it on my laptop the program works fine but when I run it on my desktop I get error 40 not enough extended memory. When I go to the memory tab in GUI I try to switch none to auto, but I get the error "This file might be read-only". It's not read-only, when I put it on my desktop I change the settings and the new settings are in a .pif I can't run .pif in MS-DOs so I need to Change the .exe not create a .pif. Change the amount of extended memory all files have on my MS-DOS. On my laptop there is no memory tab, the only real difference is my laptop is x64. Thanks for helping but I think teh x64 bit has nothing to do with it I dont eve nthink iits in 64 bit mode because Im using a boot USB. What i need to is listed above, thanks for helping.

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• Screen tail -f window closes immediately

  - by t.heintz

  I have this in my ~/.screenrc file: startup_message off screen -t top 0 top screen -t log 2 tail -f /path/to/application/log/* screen -t action 1 #caption always "%?%F%{.R.}%?%3n %t%? [%h]%?" hardstatus alwayslastline "%-Lw%{= BW}%50>%n%f* %t%{-}%+Lw%<" When I start screen, it opens all three windows, but as soon as I try to switch to window 2, it closes immediately. I would assume there is a problem with the shell and it exits instantly, but I can't find anything wrong with it. I have tried using quotation marks around the path and the entire command, which only leads to "file not found" errors. The command works just fine when I enter it directly into a shell. The screen version is: Screen version 4.00.02 (FAU) 5-Dec-03 Help?

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• Windows 8: 100% disk active time, no actual data transferred

  - by fingerbangpalateclick

  Occasionally, like several times an hour, my hard drive will appear to lock up: Task Manager will show 100% active time with read and write speeds of 0. I can still switch between open windows, but anything that requires a disk access will stall for around a minute until the hard disk starts working properly again. It happens at apparently random intervals, and only happens in Windows 8. Not 7, nor Linux. It is probably not a problem with the disk itself: This is a relatively new hard drive, and S.M.A.R.T. is showing no errors. Only happens in Windows 8: not any other OS that has used the same partition, or different partitions. So, what is going on? How can I fix this? Note: this is a different problem then this one: Extremely high disk activity without any real usage My task manager would look similar, but Average Response Time, Read Speed, and Write Speed would all be 0.

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• Separate 2 networks with 1 Windows Server

  - by SamuGG

  The situation is: I have 1 router 192.168.1.1, 1 switch, 1 windows server and a basic LAN of devices accessing it. I need to split into 2 separate LANs with full Internet access each, but isolated from each other. Given that, the server is a Windows Server 2008 R2 with 2 NICs: NIC1: 192.168.1.2 NIC2: 192.168.2.2 The router has no dhcp configuration. Please, can anyone explain gracefully, step by step, what do I need to do? What would be the 2 NICs full configuration? What services do I need to install? I don't want devices on either network to see devices on the other network, they must be completely separate. I guess I'm missing the routing procedure step, but I have no idea how is that done. For example: tell the server that devices with gateway 192.168.2.2 must send traffic for internet to 192.168.1.1 router. Thanks in advance.

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• Viewsonic monitor keeps showing its on-screen menu incessantly

  - by markvgti

  Since yesterday my Viewsonic 22" monitor (VX2255wmb) keeps showing its on-screen menu incessantly, without my touching any of its buttons. The menu comes on in the centre of the screen, stays on for 8-10 seconds, disappears for a second or two, then repeats the cycle. This happens whenever there's a signal being sent to the monitor. I can't actually navigate the menu when it appears on-screen. Pressing the power button, or the Up and Down buttons on its right edge dismiss the menu, only for it to reappear again. These symptoms have appeared before, but earlier they'd stop after 5-10 mins. The power button on the monitor has always been iffy, but now it doesn't seem to be working at all--have to switch off power supply from mains when I leave my desk. Using DVI input on this monitor as my HP desktop has DVI output.

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• How do I pull a backup from a Linux server to my Windows PC using rsync?

  - by Nogwater

  I'm currently using sftp to download nightly backups (.tar.gz) from my web host to my desktop computer. I think I'd like to switch to rsync to minimize the bandwidth (and time). I have cygwin installed on my PC, but don't use it for much. I have shell access to my web host via ssh (PuTTY). Let's say my source directory is myserver.com:/home/username/backups/, I want to grab all of the .tar.gz files from there, and I want to save them to C:\Backups\ locally.

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• Windows 7 File Transfer Speed over Gigabit is slow

  - by Adam Haile

  I've got windows 7 pro running on my file server and my main desktop. Each has a gigabit network connection and I'm connected to a gigabit switch. However, when trying to copy some large files, it's running pretty slow at a measly 12-15 MB/s The data is coming from a 7200RPM SATA drive (which I think should be good for almost 150MB/s) and going to a Drobo on the server connected via FireWire 800, so I can't think of any bottlenecks I might have in the hardware. But TeraCopy still says it's only going at 12-15 MB/s What else could be wrong here?

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• ESXI 4.0 Slow response in opening anything accross the network on a Virtual Server running Win2008

  - by user40944

  Hi I recently installed a HP ML350G6 Server with Windows Small Business Server 200864bit, Exchange 2007. The server was running fantastically and we transferred all user data onto the new server and no problems for 2 weeks! We then installed SQL2008 and transferred the accounts package onto the server and this is where the problems started. Users are now complaining to open a work document can take 2 minutes and the same with regard to anything else. The server itself seems fine, the virtual server seems fine! No disk performance problems (doesn't go above 50% unless i really copy lots of things), no memory, (12Gb only using 7Gb) cpu (usage is low average about 15%) etc on both the VM and in Windows Task manager. I have made sure disk caching is enabled on the raid controller (which made no difference). Network cards are running 1Gb and plugged into HP GB switch. Please help!

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• Explaining svn / apache permissions error? (I know "how" but not "why")

  - by Neil

  I have the following error occurring on occasion when trying to do an svn switch (have it set up to do via a web request): svn: Can't open file '/root/.subversion/servers': Permission denied This happens after an apache httpd.conf change and corresponding restart. How to fix this? I can get it to fix by doing an apache restart - BUT, it often takes multiple tries. Curious if anybody can explain this. Why did this error go away on my 8th apache restart, but not on the prior ones (with no edits to the conf file)? Basically, I kind of have a "how" in terms of solving this, but I don't have a "why" . . . Thanks!

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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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• Can't connect to server from certain machines

  - by Joel Coel

  On a small college campus we have a VLAN setup for the computer labs. These machines get assigned IP addresses in the 192.168.7.xxx range. In the server room, all of the server are on the default VLAN and assigned an IP address in the 10.1.1.xxx range. For the most part this works, but the lab machines are unable to connect to one of the servers. They can't even ping it. They can talk to other servers on the same switch as this server just fine. At first I thought it might be a vlan issue, but I changed the server port vlan to match other known-working ports with no effect. Any ideas?

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• Running a script on startup before X starts in Ubuntu 9.10

  - by Epcylon

  I have a script that I want to run at startup to switch X-configs depending on location, but I can't seem to find out where to put it in order to get it to run before X is started. This results in me having to restart X to get it to run the correct config. Currently, my script is located in /etc/init.d/whereami, with symlinks in /etc/rc[2-5].d/S25whereami. I was trying to find out when X is started, in case the problem is simply the 25, but I can't seem to find the answer... Any help is appreciated.

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• Multiple "setups" on windows 7

  - by Roberto

  I would like to create multiple setups on Windows, that is, when I'm working with my computer I have some programs opened, after that I would like to change the setup/user to the "gaming setup" where the previous setup would hibernate and the computer would have all the resources free for me to play. I could have opened multiple tabs on firefox on each setup and they would be there when I come back. I understand that windows' switch user would make the programs run when I'm with the other user and that's not what I want. So, is that possible?

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• VGA passthrough and desktop virtualization

  - by Zacariaz

  In short, my dream is to have one machine with multiple paravirtualized desktop and server guests, one of which has to be a Windows desktop with powerful graphics. As Windows can't be paravirtualized in the normal sense of the word, I was quite happy when I heard about VGA passthrough, but then I read on. As I understand it, such a setup would mean that the Graphics will be dedicated to one particular guest, thus you wouldn't be able to switch between guests. If this is in fact so, would someone please explain to me what the purpose/use of VGA passthrough is? I can think of no real use for it. Yes it's a cool technology, but to me it seems pointless. It's true that it's possible to passthrough individual VMs to separate GPUs, which is also cool, but in the end I should think that two seperate computers would make life a whole lot simpler. Again it seems rather pointless.

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• Increase Volume of an MKV Video from Linux Terminal

  - by The How-To Geek

  I've got a large amount of .MKV video files which seem to all play at a very low volume - I end up having to turn the TV up all the way to hear them, which is really irritating when I switch to another channel and wake the dead because it's so loud. What I'm looking for is a command-line method to increase the volume (so I can run it on all of them quickly) that would hopefully work regardless of the audio codec in use in the particular file. (I don't mind hard-coding the output audio though). For reference, I'm using Ubuntu 9.04 on my server, and the files are being played back with Boxee on a Mac Mini, but the volume problem is the same on Windows too.

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• Password not accepted when resuming from sleep

  - by Comrade

  My HP Pavilion dv-series notebook will not accept the user account password for the logged in user when resuming from sleep - message returned is Incorrect Password. Simply selecting the Switch User option reloads the login screen and allows me to log in as the same user with the same password that was originally rejected. And, yes I've tried it more than one (hundred) times in case you were thinking it's just a case of slippery fingers. Another interesting point is that it appears to be independent of the software running on the machine. Since the issue first appeared, I have done two clean installs where all HD partitions were wiped and new ones created during fresh installation of the OS. The first such clean install was of Ubuntu (Lucid) 10.04 amd-64, the second of Win 7 Pro 64 (from boxed disc and activated post install). Exactly the same symptoms, described above, are exhibited on both platforms. Have engaged in significant amount of Googling an come up empty so any ideas are welcome.

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• cd ~ dumps me in a seemingly empty directory

  - by Davidos

  This is on a Linux mint box. I'm told everywhere to use the command cd ~ To switch to the root directory before doing some command line magic. For some reason though, it dumps me in a directory named ~ where ls gives nothing and I can't get back to my home directory; I have to restart the terminal session to get out of the empty root directory. I'm positive that everything is just hidden to me, but even as a super-user I can't get the folders to show themselves. I usually just fall back to using a graphical file browser to roam those forbidden files, but I've recently just been shut out of my root directory, and the machine refuses to allow me to change the permissions on the stupid thing even when I type the root password in. It may just be some over-rigorous end-user shielding on the part of the mint team, but it's getting to be really frustrating now.

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• Can I prevent a particular program from showing up in the taskbar on Windows XP?

  - by jsnlxndrlv

  I have a program that I need to run more or less continuously, but which I won't need to access very frequently. Currently, launching the program creates a window and causes the program to appear on the taskbar. I'm fine with the program window appearing, but I'd just as soon the taskbar be reserved for programs that I need to switch between frequently—it would be superior for this program to only appear as an icon in the notification area, if at all. Is this possible? How do I do this?

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