Search Results

Search found 68828 results on 2754 pages for 'knapsack problem'.

Page 528/2754 | < Previous Page | 524 525 526 527 528 529 530 531 532 533 534 535  | Next Page >

• External optical drive won't plug 'n play...sometimes.

  - by Connor

  alright, I've looked a lot of different ways, but here goes. i have an external DVD burner that connects via USB and should be plug 'n play however sometimes when I connect it a message pops up requesting any CD or installation software it came with. It didn't come with any though. The confusing part is that if I wait a couple weeks and plug it in, then it works fine, but if I turn it off and back on the problem arises again. I've tried different computers, same problem. There's little to no customer support from the company, Ativa, and no drivers for the product. I'm hoping there's a registry trick for this. any help?

  Read the article

• How do I remove Slony from a restored PostgreSQL database?

  - by Scott Herbert

  I've restored a database which came from a server on which Slony was running. The server on which the database has been restored does not have Slony installed. When the database restored, there were a lot of errors reported, with Slony related objects not getting created due to Slony related logins being missing. This I thought was not a problem, as losing the Slony objects didn't seem to matter, and infact seemed desirable. However, now I've got an anoying, if not critical problem. Whenever one clicks on a table in the newly restored DB in PGAdmin, a Slony related error popup ... pops up. The first one reads: "An error has occured: ERROR: function _rmscl.getlocalnodeid(unknown) does not exist" I notice that under the Replication node in PGAdmin, that there is a Slony replication cluster. Trying to drop this cluster results in more object missing type errors. Does anyone have any ideas how we can remove the last vestiges of Slony from this database?

  Read the article

• Configure Windows Routes for VPN

  - by Florin Sabau

  I have a Virtual PC/VMWare machine that runs Windows Server 2003. This virtual machine uses an IPSec VPN client program to connect to a remote network. I configured the virtual machine to have 2 NICs: NAT - to be used by the VPN Client to access the remote network Host only - to be able to access the virtual machine from the host The reason I have this setup is because I want to be able to access some remote network from the host machine. I could've installed the VPN client on the host machine, but the host runs Windows 7 and the client doesn't support it. The problem: although the virtual machine is normally reachable (ping + http access), as soon as the VPN client is started, neither of the NIC addresses are reachable anymore. I'm wondering if it is a routing problem that needs to be addressed? How do routing/VPN client connection affect the ability of the server to respond to client requests from the host?

  Read the article

• unwanted password prompt pops up on web server?

  - by Paul

  my web server randomly asks for a password as though basic authentication is turned on. It's an IIS 7 web server and you have to specifically install basic authentication in the roles section. It isn't installed. The message that pops up is "Warning: This server is requesting that your username and password be sent in an insecure manner (basic authentication without a secure connection)" I cannot reproduce the problem but a number of customers have reported the problem and it only seems to appear to a small number of customers. It pops up when they visit the homepage, nothing is generated by the IIS logs to indicate a password box is being served (e.g. no 401 errors etc) Can anyone offer any advice? Thanks

  Read the article

• How to debug xsane "no devices available" error on 64 bit Ubuntu 10.04

  - by BD at Rivenhill

  I have a Brother MFC-J615W printer/scanner and I wish to use the scanning feature across a network with a computer running 64-bit Ubuntu 10.04. I have installed the drivers from the Brother website and followed all of the instructions, and printing works fine, but xsane (installed from repositories) produces a popup with the message "no devices available" on startup. I recently had success with a similar approach when installing drivers for a Brother MFC-495CW on 32-bit Unbuntu 9.10, so I am aware of issues such as requiring root access if the driver permissions are not set correctly, but running xsane as root does not solve this problem. Are there any tools available to debug this problem further or does anyone have advice on how to proceed?

  Read the article

• T60 Screen/LCD gets black after some minutes with a highpitched sound rising and fading

  - by Edward De Leau

  Just now my T60 screen got "black" (so no display). On my second monitor: no problems so the vga output works. symptom: Screen blanks / no display but works on second monitor steps to reproduce: - boot - wait (it does not matter what you do you do not have to login or anything) - (now the monitor of the laptop slowly begins to make a ssssssssHHHHHHHHHHHHHHHHHWOEOEssssssss noice of about 10 seconds) - right after the sounds ends the monitor gets black times seem to be the same each time. software: installed no new software before/after, running zone alarm and antivirus. other: it does not feel hot in any place, there dont seem to be running processes with strange behaviour. warranty: out of warranty what was i doing: typing text on a website and doing some php coding in a text editor. Anyone any idea what I can do here other than buy a new laptop? / does it sound familiar to known cases? update: * exactly the same problem: http://forums.lenovo.com/t5/T61-and-prior-T-series-ThinkPad/T60-Screen-Blackout/m-p/288772 and the second poster (garyj) here: http://forums.lenovo.com/t5/T61-and-prior-T-series-ThinkPad/Black-Screen-on-T60/m-p/235053#M48627 and here: "i have that same problem. i replaced the CCRL on mine and it works fine when the screen is not screwed in. once the frame of the LCD screen (metal portion) touches the metal on the laptop which holds the screen the screen goes black. If the metal is touching the screen when you boot up it boots up with it being very dimmly lit. " from http://forums.lenovo.com/t5/T61-and-prior-T-series-ThinkPad/T60-screen-problems/m-p/205047#M44995 (it seems replacing the lcd is no use, he tried it 3 times). same problem: http://forums.lenovo.com/t5/T61-and-prior-T-series-ThinkPad/T60-black-screen/m-p/80604#M25914 Hmmm... not handy 3 or 4 months ago I ordered and installed a new fan. Now the LCD. Which does not seem the core isse but some electric issue so it seems replacing the LCD is not the thing todo here. I have the following question: If it is not the LCD that needs to be replaced (see other threads) which parts can I order to fix this? Has anyone got any information which could lead me to identify the issue? I have read replacing the "inverter" AND the "backlightning" would that make sense?

  Read the article

• Wireless Network Connection gets dropped at times under Windows 7

  - by n179911

  I have running Windows 7 on my hp laptop with 802.11n wifi adapter. Some times, I lost wireless internet connection. Under the 'Wireless Connection' when I click the notification area, it said 'my home network is 'connected'... But in the header 'currently Connected to' it said 'no internet access' instead of 'internet access' I can 'fix' my problem by going to the 'wireless connection' my home network, click 'disconnect' and then click 'connect'. And when it comes back up, it gets connected again. any idea how can i fix this problem? Thank you.

  Read the article

• Macbook optical drive blocked

  - by milse

  The optical drive on my Macbook seems to have some sort of blockage. When I try to insert a disk the disk seems to be hitting something inside the drive on the right side (the side nearer the monitor). Thus disks do not fit into the drive. This problem occurred a few weeks ago, but then miraculously fixed itself. It felt like I had managed to maneuver the disk over the blockage. Now the blockage is back and I can't get any disks into the drive again. Anyone ever encountered this problem before? I probably need to open up my Macbook, huh.

  Read the article

• Cannot run setups from a vboxsvr mapped network drive on Windows 7 within VirtualBox

  - by Dimitri C.

  I'm trying to run an application setup by double-clicking the setup.exe from within Windows Explorer. The file is located on a mapped network drive, and I'm using Windows 7. This results in the following error message: The specified path does not exist. Check the path, and then try again. The workaround I found is to copy the installer to the main hard drive (c:) and run it from there; however, this is rather inconvenient. The same action did work on Windows 2000, Windows XP and Windows Vista. I have the impression that the problem only occurs with installers, as everything seemed to work fine with regular exe's. Is there anyone who can explain this odd behavior? Update: After some extended tests I noticed that the problem only occurs with a mapped drive of VirtualBox's "shared folders" (cf. vboxsvr). Mapping an SMB drive works fine.

  Read the article

• My computer's dying :(

  - by j-t-s

  Hi All I have a sweet computer and have never had any real problems with it until now. I recently formatted my computer and all was well. But now my monitor randomly flickers. The monitor will just go black for about a second or two, then it'll return back to its normal state with all the stuff still on the screen. This is getting progressively worse. Another problem that has started is my computer randomly restarts. (I've managed to prevent it from restarting by removing the check in Automatically Restart from the Startup and Recovery Dialog. But I know this doesn't solve the problem). It also completely freezes up on me. One last thing, this morning I got a big blue screen. I can't remember what it said, but if it happens again I will take note of it and repost. Or if I can find some kind of a log file containing that bluescreen error I will post. I have checked all cords, and they're all fine. Nothing's loose. My computer isn't overheating either. I've taken the case off for 3 whole days and haven't used the computer for those 3 days, which has had no effect. I've checked the connections inside and nothing's loose there either. I know there's nothing wrong with my monitor because my friend has 2 computers and it works perfectly on those computers. I don't understand how my computer could suddenly become so unstable. I'm almost certain that I have no viruses; I full-scan my pc everyday for nastys, and have strict firewall settings. Anyway, I don't see how it could be a virus anyway simply due to the fact that I had these problems right after I formatted, and before I even had the chance to install or copy anything or even connect to the internet. I know it has nothing to do with the way I formatted the computer too, I've been fixing computers for years. Sorry for rambling on, just making sure I don't leave anything out. Has anybody else had this problem? Can somebody please try to help me with this? Thank you :)

  Read the article

• A PDF viewer for large margins in fullscreen

  - by jmn

  I am looking for a way to pleasantly read PDF files on my widescreen (22" 1680x1050) monitor. My problem with all pdf the PDF-viewer applications I have tried is that they do not handle wide and high margins well. If I go to fullscreen mode in my viewer and zoom in so that the extra margins are cropped, I can view the pages nicely, the annoyance however is that I have to reposition the pages every time I navigate to another page. I am sure there must be a way to make a PDF viewer that can solve this problem and perhaps there is one you know of? I am aware of something called PDF Reflow in Acrobat Reader but that only works with certain specific (tagged) files. I want a PDF viewer with a smarter zoom/next page function or an automatic margin-crop function. Is there such a thing?

  Read the article

• Explorer forgetting how to cut and paste files

  - by raimesh

  My Windows XP (SP3) machine (at work) occasionally "forgets" how to cut-and-paste files in Explorer - if I cut or copy a file then go to paste it elsewhere, the "paste" and "paste shortcut" menu items are greyed out. The keyboard shortcuts (Ctrl+X/Ctrl+C,Ctrl+V) don't work either, and neither does Drag-and-Drop - clicking and dragging a file/folder doesn't change the pointer and letting go doesn't drop the item anywhere. Restarting the explorer.exe process usually fixes the problem, but sometimes I need to do a full reboot. Note: this may be related to the following existing question, although that's Vista and it sounds like the asker has more permanent problems than I do: http://superuser.com/questions/27045/copy-paste-in-vista-explorer-broken-not-ms-vpc So, any idea what might be causing the problem and how to avoid it?

  Read the article

• Is it possible to retrieve lost Windows XP profile information?

  - by Simon Shaw

  I'm running Windows XP Professional on a PC which is less than a year old. About 3 months ago I got an error on boot saying windows could not find my profile. At this point it created a temp one. On this occasion I copied the temp data back into my existing profile and carried on using it. After another month it died again and, once again set me up a temp user. Each time this happens I lose everything related to my profile (desktop, start menu, etc). I ran checks on the hard disk and these suggested nothing was wrong so this seems a software issue not a disk problem. On the advice of my computer manufacturer I am now considering reinstalling Windows but just wanted to check if there's any other ideas for things I might be able to try. Any suggestions for what could be causing the problem would also be gladly appreciated.

  Read the article

• LinkSys router suddenly cannot get an IP address

  - by user43208

  I have a linksys router WRT54G2 connected to a cable broadband. Just last week, everything was working perfectly - I would be able to connect my laptop to the internet using WiFi. However, starting last week, I suddenly lost my internet connection. At first I thought something was wrong with my ISP. However, when I tried connecting the cable directly to my laptop, I found out that there was no problem with the internet connection after all. It appears that it is only my router that cannot get IP address. I have already tried cloning my MAC address and reconfiguring my router using the setup CD, but nothing worked. What could be the problem here? Thank you. Regards, Erwin

  Read the article

• LinkSys router suddenly cannot get an IP address

  - by user43208

  I have a linksys router WRT54G2 connected to a cable broadband. Just last week, everything was working perfectly - I would be able to connect my laptop to the internet using WiFi. However, starting last week, I suddenly lost my internet connection. At first I thought something was wrong with my ISP. However, when I tried connecting the cable directly to my laptop, I found out that there was no problem with the internet connection after all. It appears that it is only my router that cannot get IP address. I have already tried cloning my MAC address and reconfiguring my router using the setup CD, but nothing worked. What could be the problem here? Thank you. Regards, Erwin

  Read the article

• Windows Disk I/O Analysis

  - by Jonathon

  It appears that we are having a problem with the disk i/o speed on our Windows 2003 Enterprise Edition server (64-bit). As we were initializing a database that created two 1G tablespaces on 3 different machines, it became obvious that the two smaller machines (each 32-bit Windows 2003 Standard Edition with less RAM) killed the larger machine when creating the files. The larger machine took 10x as long to create the tablespaces than did the other machines. Now, I am left wondering how that could be. What programs or scripts would you guys recommend for tracking down the I/O problem? I think the issue may be with the controller card (all boxes are hardware RAID 10, but have different controller cards), but I would like to check the actual disk I/O speed as well, so I have some hard numbers to work with. Any help would be appreciated.

  Read the article

• How to stop receiving an error reading iCal invitations on Mac sent from Thunderbird?

  - by Matthew Rankin

  When I open an iCal invitation (Mail Attachment.ics file) in Mac Mail.app sent to me from someone using Thunderbird, I receive the following error: The only solution that I've found to date is to save the Mail Attachment.ics file somewhere like the Desktop, open it in a text editor, and delete the blank lines at the beginning and end of the file. This problem appears to only happen when I'm receiving invitations from people using Thunderbird under Windows. Does anyone know of a better way to solve this problem? Is this a bug in Apple iCal, or is Thunderbird not meeting the iCal spec? Configuration Information OS: Mac OS X 10.6.2 Mail Program: Mac Mail.app ver. 4.2 (1077) Calendar Program: Mac iCal.app ver 4.0.1 (1374)

  Read the article

• Munin "Available entropy" when using address space layout randomization

  - by clawspoon

  Having just configured Munin for statistics logging on my gentoo server (hardened profile), I am noticing that my "Available entropy" is consitently in the 200-300 range. This seems way to low, so I checked it manually using the command $ cat /proc/sys/kernel/random/entropy_avail 3544 Odd. Consistently very low values in Munin and practically filled up when checking manually. After thinking about the problem for a while I came to the conclusion that the problem is probably that I'm using Adress Space Layout Randomization which is using the entropy when running commands/programs. Since Munin runs a whole slew of programs all the entropy is used up, and Munin then measures how much entropy there is, resulting in the low values. Does anyone have any experience with this? How can this be avoided?

  Read the article

• SSL certificate: unable to get local issuer certificate

  - by celwell

  I'm running Debian (Lenny). When I run this: curl --ssl https://www.google.com I get this error: curl: (60) SSL certificate problem: unable to get local issuer certificate More details here: http://curl.haxx.se/docs/sslcerts.html curl performs SSL certificate verification by default, using a "bundle" of Certificate Authority (CA) public keys (CA certs). If the default bundle file isn't adequate, you can specify an alternate file using the --cacert option. If this HTTPS server uses a certificate signed by a CA represented in the bundle, the certificate verification probably failed due to a problem with the certificate (it might be expired, or the name might not match the domain name in the URL). If you'd like to turn off curl's verification of the certificate, use the -k (or --insecure) option.

  Read the article

• Can't add German as input language in Windows XP

  - by jdm

  I have a laptop that was brought to a computer shop for a hard disk problem. They replaced the disk and reinstalled windows XP, although the English version (the laptop has a German keyboard). I'd like to switch the input language to German. Usually I know how to do this (via "Regional and Language Options"), the problem is when I choose Languages/Details/Add... it doesn't offer me the German keyboard layout: It also uses the "Standard 101/102-Key or Microsoft Natural PS/2 Keyboard" driver - the laptop's keyboard is a 104/105 key German version. I can't seem to change this. Did I just miss the setting, or what is going on here?

  Read the article

• Meta key in Terminal.app vs national characters

  - by yacoob

  I'm using Terminal.app, and I'd like to use emacs running inside - either locally, or after sshing to remote server. Problem is, I can't get working Meta modifier. Namely, if I enable 'Use option as meta key', Option key works like proper Meta, but I lose ability to enter Polish diacritics (aelósznzc), that are entered with right Option. If I disable 'Use option as meta key', my Meta is gone, but I can again use Polish characters. In this state they appear only with right Option modifier, so I guess it's Terminal.app's fault that it doesn't make a difference between left and right Option key, when the relevant preference is selected. What are my options then? Is there a good solution for my problem? I can always use ESC as a poor man's Meta replacement, but I don't like that idea.

  Read the article

• How to keep Windows 7 from sleeping while scanning the PC.

  - by D Connors

  So, I've been using Microsoft Security Essentials lately. And it usually takes a couple hours or more for it to full scan my hard drive. Because of that, I commonly leave it scanning while I go do something else. Problem is: 10 minutes later, windows 7 goes to sleep, and the scan is (obviously) paused. That's What I'd like to stop happening. So far, the only way I've been able to avoid it was to create a power plan, and switch to it while away, to keep the PC from sleeping. Problem is that I have to keep switching power plans and I'd like the PC to be able to go to sleep in case MSE finishes scanning and I'm still not back. Maybe I'm just asking for too much, but I've been surprised by the users here plenty of times already. So let me know if you know how to keep the PC from sleeping while MSE is scanning. Thanks

  Read the article

• Asus AT3-IONT & Win XP [closed]

  - by user59178

  Hello! I'm trying to install Windows XP on my nettop (Asus AT3-IONT motherboard). There is a problem - when the progress comes to partition selection, it sees all the partitions on the hard drive, but when I'm selecting any partition, it says that it's not compatible with Windows XP. Windows 7 was installed without any problems, but XP and 2003 R2 have this problem. How can I solve it? P.S. I already have Windows 7, I need exactly XP or 2003 for my work. Thanks.

  Read the article

• No keyboard works

  - by Adrian Mester

  I'm trying to troubleshoot a problem a friend is having. Her keyboard suddenly stopped working. She had a wireless keyboard/mouse combo and the mouse still worked. She tried with a different usb keyboard, and it still didn't work. She tried with a PS/2 keyboard and it didn't work. She's running Windows 7, but the keyboard also doesn't work during boot-up. I've got no idea what could possibly be the problem. Any suggestions?

  Read the article

• WIFI connection stopped working on Windows - how to troubleshoot

  - by Michiel de Mare

  Friends and family often come to me with this problem, and while I usually manage to fix their problems eventually, it often take me several hours. I'm sure there are many of us in the same position. Also, friends rarely seem to know which provider they're using, or what the password is of their WIFI-connection or ADSL-router. I'd like to gather that information myself. I'd like to have a checklist to diagnose and fix the problem, and a set of utilities on an usb-stick to help me. Where to start?

  Read the article

< Previous Page | 524 525 526 527 528 529 530 531 532 533 534 535  | Next Page >