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• How to get gigabit network speeds on Windows XP?

  - by JB

  We've just installed gigabit switches at work, and things on the Linux side are going well. Our linux boxes, which use a Intel Corporation 82566DM-2 Gigabit nic (according to lspci), consistently get over 900 mbits/sec: iperf -c ipserver ------------------------------------------------------------ Client connecting to ipserver, TCP port 5001 TCP window size: 16.0 KByte (default) ------------------------------------------------------------ [ 3] local 192.168.40.9 port 39823 connected with 192.168.1.115 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 1.08 GBytes 929 Mbits/sec We have a bunch of Windows XP 64-bit machines that use Broadcom NetXtreme 57xx cards. I spent around a day trying to get equivalent speeds on them, but couldn't get above 200 Mbits/sec. I noticed the Windows iperf tests said that the TCP window size was 8 Kb by default (as opposed to 16 Kb on Linux, so I modified my test to reflect that. Still no love. I went to Broadcom's site, downloaded the latest drivers for the card and installed. Still no love. However, finally, I tried a 64 Kb window size with the new drivers, and finally an improvement! $ iperf -c ipserver -w64k ------------------------------------------------------------ Client connecting to ipserver, TCP port 5001 TCP window size: 64.0 KByte ------------------------------------------------------------ [ 3] local 192.168.40.214 port 1848 connected with 192.168.1.115 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0-10.0 sec 933 MBytes 782 Mbits/sec Much better, but still not really taking advantage of the full capabilities of the network. If the Linux box can reach 950 Mbits/sec consistently, this box should be able to as well. Also, if you're wondering about the medium, this is over the same cable...I'm switching back and forth. Any suggestion or ideas would be really welcome. Thanks!

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• Dell PERC 5 - RAID-10 keeps rebuilding drive 2 every day

  - by raid question

  I have a Dell PowerEdge 2950 with this card: RAID bus controller [0104]: Dell PowerEdge Expandable RAID controller 5 [1028:0015] and six disks in a RAID-10. I replaced drive 2, because it didn't show up, and then it started to rebuild itself: root@backup01:~# megaraidsas-status -- Arrays informations -- -- ID | Type | Size | Status a0d0 | RAID 10 | 5587GiB | DEGRADED -- Disks informations -- ID | Model | Status | Warnings a0e8s0 | ATA ST2000DM001-9YN1 1863GiB | online | errs: media:0 other:5393 a0e8s1 | ATA ST2000DM001-9YN1 1863GiB | online | errs: media:0 other:5394 a0e8s2 | ATA ST2000DM001-1E61 1863GiB | rebuild | errs: media:0 other:99 a0e8s3 | ATA ST2000DM001-9YN1 1863GiB | online | errs: media:0 other:5393 a0e8s4 | ATA ST2000DM001-9YN1 1863GiB | online | errs: media:0 other:5393 a0e8s5 | ATA ST2000DM001-9YN1 1863GiB | online | errs: media:0 other:5393 The rebuild finishes, then the virtual drive becomes optimal, and drive 2 goes online. Then once a day, drive 2 acts like it's been removed, and the rebuild starts all over again. How do I make this once a day rebuild stop? Event Description: Removed: PD 02(e1/s2) Event Description: Removed: PD 02(e1/s2) Info: enclPd=08, scsiType=0, portMap=04, sasAddr=1221000002000000,0000000000000000 Event Description: State change on VD 00/0 from OPTIMAL(3) to DEGRADED(2) Event Description: VD 00/0 is now DEGRADED1 Event Description: State change on PD 02(e1/s2) from ONLINE(18) to FAILED(11) Event Description: State change on PD 02(e1/s2) from FAILED(11) to UNCONFIGURED_BAD(1) Event Description: Background Initialization failed on VD 00/0 Event Description: Inserted: PD 02(e1/s2) Event Description: Inserted: PD 02(e1/s2) Info: enclPd=08, scsiType=0, portMap=04, sasAddr=1221000002000000,0000000000000000 Event Description: PD 02(e1/s2) is not a certified drive Event Description: State change on PD 02(e1/s2) Event Description: State change on PD 02(e1/s2) from UNCONFIGURED_GOOD(0) to OFFLINE(10) from UNCONFIGURED_BAD(1) to UNCONFIGURED_GOOD(0) Event Description: Rebuild automatically started on PD 02(e1/s2) Event Description: State change on PD 02(e1/s2) from OFFLINE(10) to REBUILD(14)

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• Ubuntu 11.10 ATI Drivers vesa park

  - by Matthias

  This is probably not an issue, from all I can get it seems my hardware and drivers are properly installed. However when I go to system settings - system info - graphics. I get Driver: VESA:PARK. Experience: Standard. my graphics card is a: Ati Mobility Radeon HD 5470 512MB. I am pretty sure it's not a same-die GPU since there is a fan exhaust at the side of my laptop which I presume is the exhaust for the GPU... I have no clue whatsoever what this means. I installed the ati drivers first using the 'additional drivers' method. However I also decided to look a manual installation up via the terminal since I've had problems before with Ubuntu and ati cards. I used wget and something among the lines of sh dpkg -i. I can recall exactly, I took them from another stackoverflow answer. Anyway, it seems everything is installed properly since it shows up with these commands: sudo lshw -C video fglrxinfo however the first command seems to detect hardware, not the driver per se, although the driver is probably needed to detect the hardware anyway which would indicate its properly installed. I am still not sure about that VES:PARK thing though. I'd like to know what it means.. Also, if someone happens to know a good way of testing if the gpu is connected/being used...some sort of benchmark maybe...I'd like to hear it. P.s. I can find my way around in Ubuntu but I would probably still be considered a rookie by more experienced users.

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• Internet Connection not working - USB LAN connection - from particular modem

  - by Paul

  I am trying to fix Internet connection on a friends Dell inspiron 1720 with XP service pack 3. It has an integrated network card that stopped working, after powering down/up the modem still didnt work I brought it back to my place to try a few things ie check cable, update driver etc... still didnt work. So I bought a USB LAN connector. It didnt work straight away but I went to configure the properties and changed the ConnectionType from AutoSense to 100 BaseT 10BaseT Full_Duplex, I basically just tried them all. From my place when connected to my desktop - 10 BaseT and 10BaseT Full_Duplex worked. From my place When connected to their laptop - 10 BaseT and 10BaseT Full_Duplex worked. Happy I went back to my friends house confident it would all work, and it didnt. Brought it back to mine and it did. While there, in Network Connections the connection is there recognized, enabled, 'working properly' it just says not connected. Also there is no led on the USB connector While at mine as above except there is an led on the USB connector and it says connected. Other difference I can think of is they have a cable modem, I'm plugged into the back of a Belkin wireless router - would this make a difference? Any other ideas what to try? (Would getting the model of the cable modem help anyone?) The USB connector is "DM9601 USB to Fast Ethernet"

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• Media Center setup won't complete for watching TV

  - by Robert

  I have a problem watching TV in Media Center. The TV constantly pauses 1/2 second then plays 1 second, pauses 1/2 second, plays 1 second - it is constant and does not vary. This problem occurs on all channels, live or recorded. The bottom 5th of the screen is solid green. I know the problem is Media Center because I can use Pinnacle's TVCenterPro and there is no skipping/pausing (and not green on bottom). I was using cable, and switched to DirecTV (satellite). Trying to do "Set up TV signal" in Media Center seems to be what broke it. I get an error "IR Hardware not detected." I can use the remote to "try again" - so the IR hardware works fine (Media Center's remote/sensor). I tried plugging the IR Blaster into both ports, and I tried a different USB port for the IR receiver. I can't complete the setup. Media Center was playing it okay before I tried to run setup. (I ran setup to try to do recording with Media Center.) Pinnacle PCTV 800i HD PCI card (coax cable from DirecTV tuner), ATI Radeon HD 3200 Graphics, Windows XP SP3 Media Center Edition, AMD Athlon Dual Core 2.5 GHz, 1.75 GB RAM.

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• Windows 7 x64 wired connection problem. IP, gateway, dns assigned, can't ping. Network detected as "Network"

  - by Emil Lerch

  I am having a problem connecting to a specific wired network with my Latitude E6410 laptop. Other wired networks seem to work fine, but this one does not. I have a coworker with me with the same Intel 82577LM Gigabit Network card, and he can connect just fine. I've updated to the latest Intel drivers (11.8.75.0) and am not using Pro Set. I obtain all DHCP information just fine (IP, netmask, DNS server, default gateway). I cannot ping anything (internal or on the Internet - I tried pinging Google's public DNS servers by IP 8.8.8.8), nor can I get answers to any DNS queries through NS Lookup. Windows troubleshooting says everything is fine, but I can't get DNS responses. I've seen issues like this in the past that were related to link speed/duplex autonegotiaion failures, so I've tried manually setting link speed/duplex to all values one by one with no success. My coworker is using all default settings, so he is just using autonegotiate. Any ideas of other things to try?

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• Macs don't connect to wifi access point but PCs will

  - by Josh

  So, as a side project I'm going to try and figure out why the wifi APs in my building exhibit the following behavior: - They typically allow all types of computers to connect without issues - Sometimes Apples can't get an IP address but will still connect to the AP's signal - Less often, PCs can't connect to the wifi (same as above - yes signal, no IP addy) - Don't let Raiders fans on no matter the time of day! My first thought was that the DHCP leases were all taken up when the Apples would try to connect, and it was just their unlucky timing, but I would then try to log on with a PC that had a new, unleased MAC address and it would work... Could this be something to do with interoperability between an apple wifi card, and the APs? Different parts of the DHCP lease being taken up first? The fact that the Seattle Mariners might actually be good this year?? If this hasn't used up everyone's patience (with my crappy sports jokes), something else I could use some help with: - We don't have the model or type of AP - This is because there is no documentation available for them, and they literally look like small white boxes with no writing on them. Also, the company that installed them is out of business, so the situation might be that no docs will ever be on the way. -- Do you guys have any ideas on how to figure out what we have? Thanks as always for all the help, and I'm looking forward to the day when I know enough to start contributing back to the site, Josh

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• Convert a cassette tape recording to digital format

  - by Electric Automation

  Has anyone been successful with transferring audio cassette tape recordings to a digital format? I would like to preserve old cassette tape recordings of my grandparents to some digital format: MP3, WAV, etc... The quality of the tapes are mediocre. I think I can handle the quality restoration but getting the audio from tape to digital is my question. Below is a list of the hardware that I can work with: Cassette Deck: I have a Technics stereo cassette deck model RS-B12. It has separate left and right IN and OUT RCA type jacks on the back. In the front it has a headphone phono jack, plus left and right mic input phono jacks. On the computer side: -I have a Windows Vista PC with no additional software other than what came with the machine from Costco. No sound editing software that I can see. There is no sound card on the PC. On the front panel there is a mini-phono mic input jack and there are several different types of in/out mini-phono jacks on the back. In addition, USB and Firewire. I also have access to a new (2009) iMac with a mini-phono input jack for a powered mic or other audio source and GarageBand that has come with the computer. In addition, USB and Firewire. What are my options for getting these cassette recordings into a digital format? Whats the best format? What sort of wires would I need and will I want to utilize the USB or Firewire or can I simply use the audio inputs on the PC (or Mac) to receive the audio stream?

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• Rebuild Apple RAID set

  - by Clinton Blackmore

  We have a Mac Pro tower with an Apple RAID card in it using third party drives. When one drive failed, we replaced it and the RAID 5 set was nearly done rebuilding when the computer was rebooted. It did not come back up. We are now booting up off of a different internal volume, and have three (third-party) drives of identical spec (including revision and firmware) in the box. One of the drives is a global spare; the other two are recognized as belong to a RAID set but are in "Roaming" mode. The intention is to recreate the three-drive RAID set using the data on the two drives that are good. When we tell the system to create a RAID 5 using the three drives, it tells us that it'll create a RAID set but everything will be lost. There are no obvious options to rebuild a RAID using the two good drives and incorporating the third drive in Apple's RAID Utility, and we've looked through the options for the raidutil command. Fortunately, all important data is backed up, and we can rebuild from scratch, but, is there any way to make the RAIDset work again?

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• Simple options for port forwarding to a different port?

  - by Nick

  I have three network printers at our local office, all of which listen on port 9100. Non of them offer the option of changing the listening port. We have a single public static IP address, and access to our main network is through a Linksys WRT-54G. We need to be able to print to these printers from outside the office. The problem is, with the 54G, I can only forward a port to the SAME port on a particular IP address. What I really need though is a way to forward to an ip address and a DIFFERENT port. I need to do this: In port Destination 9100 192.168.1.1 : 9100 9101 192.168.1.2 : 9100 9102 192.168.1.3 : 9100 So I'm looking for options. I could setup an old computer with two network cards and IPtables I suppose, but that seems like a lot of overhead for something relatively simple. Is there a way a virtual machine (read: one network card) could do the advanced port forwarding? Where I forward all traffic to it, and it forwards it on to the right printer? Or what about those mini Linux distros that replace the WRT-54G's firmware? Do any of those support what I need "out of the box"? I have a spare WRT- could I make it an IP tables router? Recommendations for mini distros? Or is there an off-the-shelf product that does this (cheap/local preferred)? Any advice / options appreciated. Thanks!

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• What do I need to consider when buying hardware to meet my needs?

  - by Darth Android

  I'm looking to build a new computer from the ground up. I'm not sure what to look out for and need guidance and help on how to pick the hardware needed to construct my new rig. How do I know what to buy? How do I find out if a given CPU will be enough for a certain game or application that I want to run? How do I find out if a given graphics card will be enough for a certain game or application? What is important when looking at motherboards? How much memory do I need? How do I know how much wattage I need for a power supply? What size case do I need? What relevant standards do I need to read up on and be aware of? PCI, PCIe, SATA, USB 2.0, USB 3.0, etc... What "gotchas" do I need to be on the lookout for? Please keep responses generation-agnostic to ensure they will be helpful to our future users. While Stack Exchange does not permit shopping recommendations, it doesn't provide any general advice to consider when buying hardware. So, instead of just telling those that ask what to buy that it's not allowed, let's tell them how to figure out what they need. This question was Super User Question of the Week #20 Read the June 20, 2011 blog entry for more details or submit your own Question of the Week.

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• The bottlenecks of any computer, what to look for?

  - by WebDevHobo

  Whether it is a laptop or a desktop, any computer is made up of several pieces of hardware that communicate with each other. Sending data back and forth to ensure that the user gets the desired results. I have seen some theoretical stuff on computers & hardware, but I wonder how it all comes together. CPU RAM Graphics Card L1 CACHE L2 CACHE L3 CACHE FSB ... And all other things. Which is the biggest bottle neck? Why would a person not want/need a big value in one of those categories in certain situations? P.S.: when reading the specs of the i5 750 processor, I came across this description: In place of the FSB, one or more high speed, point-to-point buses called Quick Path Interconnect (QPI) are used, formerly known as Common Serial Interconnect Bus or CSI. QPI features higher bandwidth than the traditional FSB and is better suited to system scaling. What is this, and how does it compare to FSB? EDIT: I am not planning to buy a computer at all. The goal of this question is to understand the internal relation of various hardware pieces, their specific functions and how they work together. For instance, I have heard to a somewhat higher-than-usual amount of L2/L3 Cache can help speed up your computer. What's up with saying that? Also I forgot to mention Hard-disk RPM.

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• I can't connect to my network, except in safe mode

  - by eidylon

  My laptop cannot connect to my network all of a sudden except in safe mode. When it boots, it will show the networks available in the tray popup, but if I click connect on any, it says "Unable to connect" and the troubleshooter is useless. Shortly thereafter all the networks disappear. I have tried removing IPv6 support as I have seen that cause problems. No joy. I've also tried removing the wireless network adapter in Device Manager and reinstalling it, also no joy. I've also tried attaching a USB wireless adapter, and it has the same problem. If I boot in safe mode, then it has no problems at all. Three other devices in the house connect fine, so I am pretty sure it is nothing to do with the router. Any ideas what to check next? I am running Win7 Ultimate on a 2GHz Quadcore with 8GB RAM with a Broadcom 802.11n wireless card. EDIT: RE wired connections: What is very weird is that if i plug in a wired connection, then not only does it connect via the wired connection, but the wireLESS also starts working perfectly. And a soon as I unplug the wire, then the wireLESS stops working again! So it seems the wireless is right now working only in safe-mode, or when a wired connection is also plugged in.

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• AMD 700, 800 series chipset. I'm lost.

  - by Shiki

  I've been an Intel / NVidia user ever since I started using computers. Intel really gone up with the prices, and they won't get cheaper. So I decided to get an AMD. But WHICH one? I mean.. not shopping question but.. what are the differences? Like: 880GMA comes only with a single PCI ex and it looks like a chinese replica (no offense). While 890FX comes with 5PCI-ex for QuadCrossfire. Also.. what's the deal with 7xx series? I mean.. its the same price. Yet its older? Or why is it 7xx? Isn't there a single chipset between? Not chinese YET it's durable/fine for long-term usage? What it should know (desktop stuff): NVidia GPU (Zalman AMP2 GTX 260^2 (one card)) Phenom 1090T cpu A somewhat good audio. Any ideas which is the chipset I'm searching for? If this sounds too much of a shopping question, feel free to edit. I just want some clarification on these chipsets.

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• Internet Radio Station for University

  - by ryan

  I am trying to help my University Student Radio station rethink the setup of the way they stream music, but I have some questions regarding the use of Ubuntu to stream music. Currently, the radio station uses two windows machines: one of which is used to stream the radio station and serve the website, and the other is used by rotating djs to select songs and create playlists. The computer used by djs feeds mono into the sound card of the server and the server streams the feed online. -Ideally I would like to maintain a two-computer setup: One computer as server, and another that is used to select and play music by rotating djs. -I would like to use Ubuntu for the server. -I would like to use Windows for the other machine. -The server should be able to stream song information. First, is there a way to somehow get the song information from an analog feed? Second, what is the best streaming server for radio? I have encountered shoutcast, icecast, and darwin, but I don't know where to begin in attempting to gauge them. Finally, if anyone has any tips or pointers about small internet radio station management/ setup they would be appreciated as this is my first radio station, and I am eager to hear of past experiences.

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• Windows Remote Desktop: "configuring remote session" closes without error

  - by icelava

  I have a desktop/laptop pair at home operating x64 Windows 7 (the desktop was upgraded from Windows Vista, works just fine). I remote desktop to them on a daily basis when outside. In recent weeks, I would occasionally fail to connect to my desktop. It can connect and authenticate fine, but the "configuring remote session" dialog would simply close and not show me the desktop window or any error message. There is no error event log relating to this on the desktop computer. Some suggestions call for disabling remote audio, which mine already is, but trying different audio modes did not yield any different result. I am not too sure if this is related to video card drivers (they do get auto-updated), since remote desktop video is supposed to steer via a virtual device driver? Nonetheless the desktop operates three monitors via an ATI Radeon HD5770 (1 Displayport, 2 DVI). I do not see a real problem with that since I can mostly connect and operate it remotely. I try to "remote tunnel" via my home laptop but obviously won't work either as the problem lies in the desktop. What other conditions can cause remote desktop to break without error? UPDATE I came home and still couldn't connect to the desktop until I restarted the entire system.

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• BIOS unable to boot CD or Hard Drive

  - by Gabriel

  Motherboard Intel DQ35MP. HDD Caviar Green 1TB. I'm having problems with my BIOS and/or hard drive/disc drive. Came back from a trip, booted my computer, and realized that the BIOS wasn't booting anymore, just a black screen with no beep sounds. Only fans and lights on. Then I thought it might be caused by the video card, I removed it, and still no BIOS screen. Then I removed the hard drive and voila BIOS screen is back again. If the hard drive is defective then I can check that with a Rescue Disk. I inserted the CD on the Disc Tray but the computer did not respond to it, the screen freezes in black with an "E7" string at the bottom right corner just after the BIOS screen, this happens with or without discs. BIOS settings are set to default, and CD reading is on top of the boot device list. EDIT I removed the BIOS battery, rebooted the CPU, the BIOS screen showed up, and then it freezed in E7. Placed the BIOS batttery, rebooted and same thing, we are stuck with the E7 string. I uploaded a video to illustrate the problem http://www.youtube.com/watch?v=13jPdBcIrBU

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• Windows 7 blank dvi screen

  - by user99

  I've just upgraded to Windows 7 Ultimate 64 bit. I had an issue during installation; after setup rebooted instead of going to the 'Completing installation' screen I just got a blank screen. I eventually(!) figured out that this meant 'un-plug your second monitor to proceed'. When I did this, installation completed in a snap and everything runs fine. However, whenever I plug my second monitor into my PC, it gets no signal, the the primary monitor removes all windows. icons, the taskbar and the cursor just shows the desktop wallpaper. I'm running a GTS8800 512mb, with the latest drivers (197 IIRC). The monitors are identical, and both plug into DVI sockets on the graphics card, the only difference is I connect one using a straight DVI cable and the other using a VGA cable and a VGA-DVI converter. It's the DVI cabled one that has the issues (if I plug it in by itself it gets no signal). Everything was working fine before I upgraded to Windows 7 (I used to run XPSP2). Anyone have any ideas?

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• Windows XP can't connect to wireless network

  - by mikez302

  I have a desktop computer with a wireless card, running Windows XP SP3. For a little while, I had a remote network connection set up for my job, but I didn't need the remote connection so I deleted it. Now, I am unable to connect to the internet at all from that computer through my wireless router. I can connect through my router using my laptop, and I can connect through my neighbor's router using my desktop, but for some reason I can't connect through my own router using my desktop. I see the "Wireless Network Connection 5" icon in my system tray, but it tells me it is not connected. When I click on the icon, I see a list of wireless networks, including my own, which is set up to automatically connect, although it doesn't. When I try to connect to my network on my own (by clicking on it, then clicking "Connect"), it asks me for my network password like it usually does. I see a box come up saying "Waiting for network to be ready..." and it hangs there. On the list of wireless networks, my network says "Acquiring network address" but it doesn't actually connect. How can I fix this? I tried rebooting my computer, repairing my connection, and restarting my router, and I am still having this problem.

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• Media Center setup won't complete for watching TV

  - by Robert

  I have a problem watching TV in Media Center. The TV constantly pauses 1/2 second then plays 1 second, pauses 1/2 second, plays 1 second - it is constant and does not vary. This problem occurs on all channels, live or recorded. The bottom 5th of the screen is solid green. I know the problem is Media Center because I can use Pinnacle's TVCenterPro to watch TV and there is no skipping/pausing (and not green on bottom). I was using cable, and switched to DirecTV (satellite). Trying to do "Set up TV signal" in Media Center seems to be what broke it. I get an error "IR Hardware not detected." I can use the remote to "try again" - so the IR hardware works fine (Media Center's remote/sensor). I tried plugging the IR Blaster into both ports, and I tried a different USB port for the IR receiver. I can't complete the setup. Media Center was playing TV okay (with the new DirecTV) before I tried to run setup. (I ran setup to try to do recording with Media Center.) Hardware/Software: Pinnacle PCTV 800i HD PCI card (coax cable from DirecTV tuner), ATI Radeon HD 3200 Graphics, Windows XP SP3 Media Center Edition, AMD Athlon Dual Core 2.5 GHz, 1.75 GB RAM.

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• NVIDIA GeForce GT750M drivers for Ubuntu 13.10 on iMac

  - by Eugene B

  I have just got a new iMac 14.3 with 21.5' display. It has Intel i7 processor and NVIDIA GeForce GT750M graphics card with GPU (Device ID: 0x00fe9). I have installed Ubuntu 13.10 on it (dual boot with refit). Everything works fine apart from graphics. It is clear that graphics' not accelerated, and there are no drivers suggested in the "Additional drivers" section. I have tried to Install nvidia drivers from the repository. Download nvidia drivers and install them manually. Follow instructions here. Follow instructions here. Follow instructions here. Install bumblebee. Play around with xorg.conf file. Blacklist nouveau. As you may guess, nothing worked. The weirdest thing is, that when I boot from a LiveCD, it picks up screen resolution and all the rest correctly, though when I install the system to my Hard Drive it clearly does not have proper drivers. Does anyone have any suggestion what to do?

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• Mac OS X - configuring ntpd server with on LAN with D-Link DIR-655

  - by Mark C

  Hey all, This question is pretty specific, but I hope someone will have seen this error elsewhere. I a configuring a machine running OS X 10.5.8 to be an NTP server for machines connected to a LAN that is not connected to the Internet. I am not too worried about knowing the "right" time on all the machines, but rather worried about making sure everyone has the same notion of time. I configured the NTP daemon on Mac by turning on the Set date and time automatically in System Preferences, using the server's clock, 127.127.1.0 as the reference clock. I figured I should see if the server can NTP query itself before proceeding to the clients. The weird part is when I run the ntpq -p command in a command-prompt when connected to my D-Link DIR-655 (firmware: 1.33), it hangs for about a minute or so each time before finally giving me some output. I thought the problem might have to do with Port Forwarding, so I configured the router to forward port 123 for the IP of the server, but that did not improve the situation. When I run the ntpq -p command on my school's network, on a Linksys WRT54G router, or with the wireless Airport card turned off - I have absolutely no problems - the command returns a response instantly. Is this normal? I can see why a query might take a minute or so, but I don't understand why one router does it faster than the other. I tried messing around with the ntp.conf file adding the burst, minpoll, and maxpoll options: server 127.127.1.0 burst minpoll 4 maxpoll 5 Figuring that perhaps I am polling too often and the configuration file is slowing me down, but even with this, the ntpq still hangs on the D-Link DIR-655, but does just fine on the other routers. Any thoughts on where the lag is coming from or if the lag is even a problem?

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• What parts of a motherboard age, and how can I choose one with the longest possible life?

  - by Robert Harvey

  I have a home-built computer that's probably about four years old. I realize this probably seems ancient to some folks, but computers have no moving parts (except the fans), so theoretically they should last a long time, if I still have software to run on them. A few weeks ago, it began blue-screening and freezing up, with various error messages. It almost always happened about five minutes after startup. I assumed that the video card was overheating, since the cheap little fan on the heatsink died, so I replaced it. Long story short, after upgrading the video drivers a couple of times and performing some other troubleshooting, I remembered that the last time this happened, I took out the memory SIMS and cleaned the contacts with a gum eraser, so I did that again (noting that the SATA cables were very close to the chips on the SIMS). I re-routed the cables and reinstalled the SIMS. So far, so good; the machine has been trouble-free since. But blue-screens are distressing; I never know what bits are being chewed up in my OS installation when something like this happens. So I'm wondering if I'm choosing my components properly. If it matters, it's an Intel D915GAG motherboard and Corsair memory, but what I'm wondering is, should I be looking for certain characteristics when I choose these parts for my next computer, so that I can avoid this problem in my next build?

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• Cannot connect with Cisco VPN but can connect with ShrewSoft VPN

  - by rodey

  EDIT: We connected an air card to the computer to use a different Internet connection and using the Cisco software, we were able to successfully connect to our VPN server. I just don't understand why the ShrewSoft VPN client would connect but the Cisco connection won't. I'm not our network admin so sorry if I butcher some of the terminology. I have a computer at remote site that connects to our network through Cisco VPN. It uses the Cisco VPN software to do so. The problem is that the computer at this site cannot connect to our VPN because it is getting error "Reason 412: The remote peer is no longer responding." To see if perhaps something on their network was blocking the connection, I installed the ShrewSoft VPN client on the computer, imported our .pcf file and connected with no problem. I have tried two different versions of the Cisco VPN software (4.8.0.* and 5.0.03.*) and have the same problem. I installed Wireshark on the computer and have confirmed (while trying to connect through Cisco) that the computer is trying to contact the VPN server but is not receiving a response. We are not having any other problems regarding users not being able to connect. I'm at a loss at what else to check. I'll be monitoring this and have access to the computer at any time.

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• Enabling hardware acceleration and Xinerama for multi-monitor/multi-GPU in Linux

  - by mynameiscoffey

  My current setup is three monitors connected as follows (monitors listed from left to right): GPU0 (nVidia GTX 280): - Dell 2405FPW (1920x1200) - Dell U2410 (1920x1200) GPU1 (nVidia 210): - Dell 2405FPW (1920x1200) Works like a charm in Windows 7, not so much in Linux. I seem to only have three real options: Run all three monitors as a seperate X screen, I get hardware acceleration but as they are all independent X sessions I cannot move windows between them and can only have firefox open on one at any given time. Run the two on GPU0 in TwinView mode and have GPU1 as a seperate X screen. Same limitation as 1 but at least two monitors work together ok. I did have an issue where occasionally Linux saw both monitors on GPU0 as a single large monitor however. Enable Xinerama and have everything work as I want it to but hardware acceleration is gone and the display is Windows 95 style choppy. My ideal solution would be to have all screens working as they do under Xinerama without the limitation of having hardware acceleration disabled. I don't even care if that means rendering all three on GPU0 and somehow farming out the display of the third monitor to GPU1, whatever works. My question is this: is there any way to accomplish this? I don't feel like my use case is so out there that there shouldn't be at least some form of support (beyond the three limited options presented above), or is my best option going to be to just suck it up and pick up a better card to replace both that can handle three outputs by itself?

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