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• Motherboard running rather hot while gaming

  - by I take Drukqs

  Case: Antec 1200 Mobo: Gigabyte GA-X58A-UD3R CPU: Intel i7 950 (stock cooler) GPU: EVGA GeForce 570 GTX RAM: 2x 2 GB (4 GB total) DDR3 dual-channel Corsair OS: Windows 7 Home Premium 64-bit This is my first build and it's brand new. I had no problems putting it all together in a few hours one evening and I consider myself to be pretty good with computers. Not to brag or anything like that! Just saying I've been fiddling with them since I was in diapers and I have a good amount of experience under my belt, just not with certain things yet. Recently while playing many of the latest games maxed out without a hitch my motherboard has been running hot and like anyone who's ever built a computer it scares the life out of me. I checked HWMonitor and saw that my motherboard sometimes reached temperatures of around 52 - 78c (the number 78 obviously being what's scaring me). I was wondering if such a temperature is normal and if not what the problem could be. Air flow in my case is phenomenal and besides having to ship back a faulty GPU and reseat my CPU my first build has been a very large success which I am enjoying tremendously. There is literally almost no dust in my case due to it being very new as previously mentioned and my RAM sticks are in the correct slots for dual-channel mode. My cable management is pretty great in my opinion with only cables from my PSU lingering in the bottom of the case. At any given opportunity I ran my cables behind my mobo. Air flow should definitely not be a problem because my CPU only goes up to about 60c and my GPU only goes up to about 80c. Thank you very much in advance.

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• Suggestions on the best home server rack cabinet

  - by allentown

  I have a lot of gear in a colocation facility right now. Some of it is going to come home with me now. I do not know anything about the "rack mount" side of the industry. I lease a rack, and I put my stuff in it. I have a few 1U boxes, a few 2U boxes, and a few 4U boxes. 1U switch. One is a new Xserve, which means it is deep. I think I can get by with around 12U to 18U. I want to keep it as small as possible, since I do not have a lot of spare space at my home. I will not be able to bolt to the wall, floor etc, so it should not be tall. This is something I would love to more or less just be a box that sits on the floor but gives me the ability to mount nicely, do nice cable management etc. Are the "post" style racks junk? I am liking the open space, and the no limitations on depth of something like this: http://www.rackmountsolutions.net/images/products/Martin-relay-rack.jpg However, that thing is way too tall, and probably way too expensive. I am looking to be around $300.00 or less. More if I have to, though I would prefer not to. These look near perfect: (See comment for this link, the system will not let me post a second url) but I am worried the Xserve will not fit in it. If anyone has any good links, or website recommendations of good past experience, I would appreciate it. I am almost considering that I may be able to build something with random scraps of stuff at Home Depot as well.

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• ESX hosts lose connectivity with iSCSI SAN LUNs

  - by Themist

  I've been experiencing this issue for a couple of months now where my ESX hosts lose connectivity with my iSCSI SAN vmfs volumes. As a results the ESX hosts enter a nonresponsive mode the associated VMs disconnect and the only remedy is to reboot the host. This issue happens randomly . I have escalated this issue with VMWare but I haven't had any solution to the issue yet. I see no errors on my switches and there are no hardware issues as well. My SAN infrastucture is solid and there are 2 paths for every vmfs volume. Did anybody else experienced a similar issue? edit: Here are some more details: The iSCSI SAN software is Datacore Sanmelody 2.0.4.2 running on 2 HP Proliant G5 servers. The storage attached to each of the servers is an HP MSA70 and all the iSCSI SAN Volumes that are presented to my 4 ESX hosts are mirrored. I have two iSCSI swithces HP Procurve 1800G-24 that are trunked together. My SANLELODY servers are using NC360T NICs. I team two NICs and have one cable connecting to each iSCSi switch. Each ESX server uses two NICs as well for the iSCSI Network.

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• External USB HD with -optional- mains?

  - by Stephen

  Hi, I'm Christmas-present-buying, and I'd appreciate recommendations for a USB HD with an optional mains power input. I've hunted, but can't find all the information I want (partially due to sketchy product specifications). Background: This is for a digital TV which I do not own, and so I'd like to get it correct first time. The TV has a USB port to allow recording straight to disk, but the manuals don't say how much power can be drawn through the USB port. The manual's instructions state, possibly generically, to plug the drive in before connecting to the TV. Ideally I'd like a small (2.5"?) drive which can draw power over USB, with an mains power input if it turns out the USB port on the TV doesn't offer enough juice. The ideal is to use one cable, two max. A powered USB hub would introduce too much clutter. I've spotted that the LaCie Petit drives have what appears to be an additional power input, but I'm not even sure from the specs what that is. And the device doesn't ship with a mains adapter. Suggestions?

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• HP G61 Laptop wont boot- display stays off, caps and num lock indicators blink repeatedly

  - by Benguy12

  I had my HP G61 laptop running in sleep for a while. When I came back to it about a half-hour later, it was no longer in sleep mode - the power light and the Wi-Fi indicator light were on (I keep Wi-Fi off becuase I use a wired connection) - but nothing was showing on screen. In fact, the display wasn't even turned on. So I let it sit for about 10 minutes but nothing happened. I did a force shut down and rebooted. Instead of a normal boot, the display didnt turn on, the Wi-Fi indicator was off, and the Caps Lock and Num Lock lights just blinked repeatedly. On the external keyboard i use, none of the light indicators were blinking or even on. I tried force shut-down again 10 times, then unplugged all connections except for the power cable (my laptop battery dosent hold a charge for more than 2 minutes, so I always must have a wall connection) and tried to boot again but still nothing happened. I unplugged the battery and even then nothing happened. I also tried booting with the disk drive open, and then with it closed again. On the time it was closed, I was able to successfully boot into Windows, but recieved a "Windows did not shut-down sucessfully" notice. Does anybody know why this may have happened? My PC's specs: Windows 7 Home Premium, 64-bit 4GB of physical RAM, 8GB of vRAM (on a flash drive) AMD Vision x64 processor (don't know any other specs about it) ATI Radeon graphics card, 392 MB DVD-R/W lightscribe drive 2 External hard-disks (first one is 1.5TB, second one is 1TB) custom boot-screen and boot-annimation Standard BIOS apps running before sleep: firefox 10.4 itunes 10.6 adobe photoshop extended CS5.1 rockstar games social club (running in background) microsoft powerpoint 2010 professional edition google chrome I was NOT running Aero or any fancy themes - I was using the normal windows classic theme. I have a desktop icon manager application called Stardock Fences that was also running (it runs as a service/process).

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• finding the best network latency between two countries

  - by Yoav Aner

  I know there are many tools to test for bandwidth and latency, but they all rely on having at least one host from which you can run those tests. I wonder whether there's an online source or some other way to guestimate the latency or speed between two countries (in general). For example, would a customer in Japan get lower latency if the server is located in Singapore or Australia? Is a user in India likely to get higher download speed from a server in the UK or in the US? Are there any online resources or some clever ways to answer those questions with a reasonable degree of accuracy? [UPDATE]: Thanks for the great suggestions from Raffael Luthiger. I didn't know about those looking glass servers. The submarine cable maps were also really cool to discover (Thanks to Jesper Mortensen). Also seems really wise if I could ask those network professional in the area for their experience, but obviously I don't have access to those. At least some of them are on SF :) However, I'm still a little unsure how to combine those resources to give me some measurements. This is the information I have: Two countries (A,B). I do have IP addresses of customers in country A (I can obtain those from the web server log files for example). Presumably I can find some looking glass servers in country B and run a trace to those IPs. What's the best measurements to use? Are there any scripts that help automate at least some of this process?

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• Recover data from physically damaged harddrive. What are my options?

  - by Michael Kniskern

  I was trying to replace the power supply in my desktop PC and ended up physically damaging the data connection from the hard drive to the motherboard. The plastic shelf for the copper prongs on the hard drive broke into the cable. Here is a picture of my handy work: I went to Best Buy Geek Squad to discuss my options and they said that they will need to send it to the recover center it could cost anywhere between $250 to $1600 USD to recover the data out the hard drive Is this reasonable for data recovery from a physically damaged hard drive? Are there any other options I can explore? I am going to talk to the data doctors to see what my options are. Update I took the HD to Data Doctors, and they told me that the SATA connection was broken to they would need to replaced the data connector and then copy the data to a brand new hard drive. So, with the initial analysis, cost of replacement parts, and data recovery fee it came out to $865.00 USD. The technician specifically stated if this was an older hard drive that would just need to replace the data connector. But because there is specific information related to the individual hard drive in the flash ROM, they need to transfer the data to a brand new hard drive.

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• Does the Lenovo t60p vga port support an s-video signal?

  - by Matthijs Wessels

  I just bought a new television. The problem is it turns out it doesn't have a VGA port. It does have: s-video, component, hdmi and scart. My Lenovo t60p only has vga. If have search frantically for a solution and even though it seems I have sooo many options they are all dead ends. Or I keep ending up having to buy a 100 euro box to convert the signal. However, I found that some video cards support s-video through the vga port. It says look it up in your video cards documentation. I have a Lenovo t60p laptop with a ATI MOBILITY FireGl v5250. But I can't seem to get my hands on any documentation where this is supposed to be documented. I found this website: http://forum.notebookreview.com/showthread.php?t=179529&highlight=s-video There this guy says he thinks it's in the t60 but dropped in the t61, but suggests to the guy with the t60 that it won't work. I can't really conclude anything from that. Furthermore, I am not looking for the best of the best quality. So when I found this: *http://www.amazon.com/VideoSecu-Computor-Presentation-Converter-VGA2TV/dp/B000X3FAJU/ref=pd_cp_e_3_img I woudl be quite happy with this. Except that I don't think I can order it because I don't live in the US. Can anybody give me a definite answer, to whether the vga port of my lenovo t60p ati firegl v5250 supports s-video? So that I can just by a vga to s-video cable to achieve my goal.

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• System freezes during boot process

  - by slugster

  Hi everyone, i have a machine running Win7 Ultimate. It was running fine, then it just froze - all the stuff i was doing was still on the screen, but mouse and keyboard input was ignored, any animation that was happening on the screen stopped, the machine literally just froze. So i rebooted (power off button), from then on the machine will reboot, but it ultimately freezes again. The instance when this happens will vary - i have made it as far as the Windows login screen, but mostly it will do the POST, then give me the option to press F1 to continue or Del to enter BIOS settings (but of course pressing a key has no effect - it's frozen!). I have disconnected everything not necessary for the boot process, the only peripheral that remains attached is the keyboard. (even the network cable is disconnected). Prior to this the machine was operating fine. The install of Win7 is only 2 days old, and it was a fresh reinstall (i.e. not an upgrade or repair). Can anyone give me an indication of what may be wrong here? I'm not sure if this question should be here or on SuperUser, please migrate it if i have chosen the wrong board.

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• System freezes during boot process

  - by slugster

  Hi everyone, i have a machine running Win7 Ultimate. It was running fine, then it just froze - all the stuff i was doing was still on the screen, but mouse and keyboard input was ignored, any animation that was happening on the screen stopped, the machine literally just froze. So i rebooted (power off button), from then on the machine will reboot, but it ultimately freezes again. The instance when this happens will vary - i have made it as far as the Windows login screen, but mostly it will do the POST, then give me the option to press F1 to continue or Del to enter BIOS settings (but of course pressing a key has no effect - it's frozen!). I have disconnected everything not necessary for the boot process, the only peripheral that remains attached is the keyboard. (even the network cable is disconnected). Prior to this the machine was operating fine. The install of Win7 is only 2 days old, and it was a fresh reinstall (i.e. not an upgrade or repair). Can anyone give me an indication of what may be wrong here? I'm not sure if this question should be here or on SuperUser, please migrate it if i have chosen the wrong board.

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• Using my old PC as a web/file server?

  - by Garrett

  I have an old desktop computer that I've been trying to sell for AGES. I guess nobody is looking for computers because it was advertised at a dirt cheap price on craigslist, local papers, etc. Anyways, I was wondering if it would be worth it to set it up as a home file server, a web dev server (I have a web host for actual production use), and maybe host a few server applications (ex: ventrillo). The computer is actually an old Dell that I cannibalized after the motherboard being destroyed by lightning, so it has fairly new parts in it. The specs are: P4 3.4GHz w/ HT and Artic Cooling Freezer 7 3GB DDR2 533 RAM 80GB hdd (will upgrade the hard drive if it's even worth using as a server) basic dvd rom 430 Watt Thermaltake PSU (it might be important to note that it is only 60% efficiency) ATI Radeon x600 256MB Antec 300 case It's not a really beefy machine, I just can't see giving it away or putting it in the corner to just collect dust. I have Windows Server 2008 R2 Standard and I am confident in my skills in operating most Linux operating systems. I'd also be using it to tinker with when I learn new things in my server admin classes (I'm finishing my 2nd year in college at the moment so I'm still learning) Also, my house is quite old and the electrical wiring is pretty poor (it MIGHT be up to code, then again, where I live most people don't even know what regulations are or let alone know how to spell it...) Would it be safe to leave it running all day and is it going to run up my electric bill because of the PSU efficiency? I only have 5mbit cable internet, but I won't be running very bandwidth intense services on it so it should be ok. I should elaborate on why I am concerned about the power. The circuits should be fine, but I'm more concerned about fire hazard. What is the likelihood that the server could cause an electrical fire? Again, thank you all for the feedback!

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• Recommended open-source firmware for ASUS RT-N16

  - by MasterF

  I have recently acquired an ASUS RT-N16 router. My original plan for it was to install Tomato on it. However, after checking their website i found out that the firmware was not updated in the last 2 years. There seem to be a few updated mods but none of them really seemed mature/stable/well-documented. I would like to know what other people recommend as open-source firmware for this router. I know the answers will probably be subjective; so i will give a bit of background on my needs: for now i will only use the Wi-Fi on an Android phone the connection will not be shared with anyone (so QOS is optional) i want a stable (wired) connection on my PC (for online gaming etc.) i want the (wired) download/upload speeds to be as close as possible to those achieved by directly plugging the Ethernet cable to the PC's network card; i have a 100 Mbps connection my ISP uses PPPOE my technical level: i am a software developer and i have good knowledge of bash scripting, but no experience with networking Also, i know that i could probably just use the stock firmware (and maybe will use it for a while), but i'm interested in trying an open-source version (for more features, flexibility, as a learning exercise etc.)

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• Can't find PC on network

  - by Simon Verbeke

  I just got myself a new laptop, and set it up. It is connected to the wireless internet in my home. I then wanted to create a homegroup between the laptop and my desktop, but they can't find each other. Probably because the desktop has a wired connection to the router and the laptop is connected to a wireless access point. The router and the AP are connected to a switch in the middle by cable. A sketch of the network: Laptop - - - Wireless Access Point ----- Switch ----- Router ----- Desktop ^ ^ ^ ^ Wireless Wired Wired Wired They both point to the same gateway and DHCP-server (on 192.168.0.1). And I can ping to that address from both PCs. When I try to ping either of the PCs the pings time out. The subnets are also the same (255.255.255.0) and the IPs are in the same range (192.168.0.114 laptop, 192.168.0.205 desktop). So I don't really understand what I need to do to be able to access either computer from the other. The weird thing is that Synergy (to use mouse and keyboard over the network) works, just by using the IPs assigned to both PCs. The acces point is a linksys WAP54g, but I'm unsure of the Router, it has a custom casing from our ISP and hides any clues for identifying the product. I'm going to google a bit so I can add that info later. Both PC's are Windows 7 64 bit. The desktop is Ultimate, the laptop Professional.

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• Get Internal IP Address From DHCP Hostname

  - by ell

  I would like to try and get an internal ip address of one of the computers on my network. The reason for this is I have a little home server box downstairs but every time I want to SSH into it I have to open my router configuration and go on the DHCP client table and look at the IP address. For example I would like to be able to go ssh ell-sever instead of ssh 192.168.1.105 or whatever it happens to be. My network configuration is like so: Router downstairs that is connected to the Internet and is running a DHCP server My server computer (ell-server) is a headless pc connected to the router via ethernet cable. Running Ubuntu 11.04 Server Edition My laptop upstairs (ell-laptop) that is running Ubuntu 11.10 Desktop Edition connected wirelessly Other (irrelevant) computers - 2 x Windows XP, 1 x Xubuntu - all connected with cables. (It seemed to me the method of connection isn't useful information but I put it in anyway - just in case. If I have missed any information please tell me) Do I have to run a DNS server on one of my computers? If so which one? And does that mean I will have to run a DDNS client on each computer? Thanks in advance, ell.

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• Can I still restore partition table?

  - by Johannes Lund

  Once I was going to resize partitions on my Mac HD from Bootcamp. I changed my mind and was going to quit, but apparently I hit a button, which made every single mac partion dissapear, and windows 7 refused to restart and be reinstalled. The 1 TB large HD consists of 3 partions, I believe. Since I can't see their actual size (except bootcamp), this is how I recall it. Macintosh HD about 500GB (Somewhere around 700GB according to disk utillity, but 500 according to Finder, and 500GB was all I could access.) Lion Recovery disk Bootcamp 293.36 GB To fix this I connected my mac via target disk mode to a pc and ran TestDisk. However this is the results: Since I Don't have 10 reputation I cant post the image showing the testdisk results, so I post a link instead hoping it is ok. The two mac partitions' sizes are completely wrong, and BOOTCAMP isn't showing. I tested using disk utilities from the snow leopard dvd. There there is one 293.36 GB Mac OS Extended partition. Before I had the firewire cable for target disk mode I tried reinstalling windows. Without success I tried again formating BOOTCAMP. Was that a bad thing to do? Could it have overwritten data from Macintosh HD? Unfortunately I have no backup. I could bring it to some kind of computer repair firm though.

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• Wireless router that supports Bonjour between wire- and wireless- connected machines

  - by cefstat

  At home I have an ADSL modem that I use also as router. For the record, it is a DavoLink DV-2020 provided by Tele2 in the Netherlands. It turns out that if a computer is connected with a cable to the router and another computer is connected wirelessly, then they cannot see each other's services that are advertised through Bonjour (Apple's service discovery protocol, an implementation of Zeroconf). The combinations wired/wired and wireless/wireless work fine. This means that somehow wire- and wireless- connected machines are on different physical networks although their IPs are in the same range (192.168.1.*). The modem in question doesn't provide many options that I could play with. So, I was thinking of buying a second router to connect to the modem, and then connect all my machines to this second router. The problem is that I am afraid that I will have again the same problem. I am looking for suggestions on routers that offer the functionality I want (Bonjour between wired and wireless connections). I suppose that one solution would be Apple's Airport Extreme Base Station but at 160€ it is ridiculously expensive. Any other options out there? And why is it so difficult to find in the technical characteristics if wired and wireless connections are on the same physical network?

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• Debugging Windows PC freeze

  - by Violet Giraffe

  I have a problem with my computer, would appreciate any hints/ideas. It usually begins not immediately after booting Windows, but at some unpredictable point in time, which doesn't seem to correlate with any specific actions of mine. First sign of a problem is process System starting to consume 25% CPU time steadily. I have a quad-core CPU, so it might be one thread working non-stop. At this point micro-freezes start to occur - screen stops refreshing, but if I have, say, music player running - it continues playing. If I try to do something between the freezes, like open Start menu, it will freeze completely and forever. If I press reset button the PC will shut down and then start cold, as opposed to usual reset behavior (which doesn't include PC shutting down). I have noticed that full restart upon reset is usual for hardware problems, but I think this problem isn't related to at least motherboard-CPU-RAM-videoadapter. It certainly isn't caused by overheating. One very important not is that it seems to be related to Windows hosted WLAN network: I have USB Wi-Fi dongle and have configured a hosted network to share cable Internet connection with Wi-Fi devices. I am not 100% certain there's a strong connection, but in 9 or 10 cases when I enabled the network (by executing netsh wlan start hostednetwork), it did freeze eventually (sometimes within minutes of starting the network, sometimes within hours), and on at least 10 days when I didn't start the network it never froze, no matter how I used the computer). There are no critical/error entries in the events log that I can suspect as being related, only regular stuff like "driver not loaded". I have found no critical/error events that are being logged around the time of freeze occurring and are not logged during normal boot without starting the WLAN.

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• Windows 7 can't see wireless printer

  - by Chance Robertson

  I have a P1102W printer from HP. I have a Windows 7 machine. I have a MacBook Pro. I setup the printer following the instructions from the Windows 7 machine. I am able to print from the Mac but not the Windows 7 machine. And to add, I am not able to print from any Windows 7 machines. The MacBook Pro address is 198.168.2.115, the Windows machine is 192.168.2.117, and the printer in 192.168.2.140. I can ping the printer from the Mac. I can ping the Windows 7 machine from the mac. I can ping the mac from the windows 7 machine. When I try to ping the printer from the Windows 7 machine I get destination unreachable. I can browse to the printer IP address from the mac and not the Windows 7. I have turned off the firewall on the Windows 7 machine and turned on network sharing. Is there something else I am missing. I can connect the printer with a USB cable to the Windows machine and print. I can not get the Windows machine to see the printer even though they are on the same network.

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• Loss of network connectivity when playing video on Optoma HD180 projector

  - by Jeff Fohl

  Hi Folks - New to Super User, so I hope this question fits in with the guidelines. Very strange problem I am having, and I am at a loss as to how to continue troubleshooting this one. The basic problem is that when I attempt to watch streamed video on a particular display device (an Optoma HD180 projector), my network connectivity drops like a stone to barely measurable levels. This is my setup: I have a Dell H2C 730x running Windows 7 64bit. This particular computer has two ATI Radeon HD 4800 video cards. I have two Samsung 22" monitors connected to one card, and an Optoma HD180 digital projector connected to the other card via an HDMI cable. My internet connection is normally a reliable 6Mbps. The problem I am having occurs when I stream video (or even just browse the web) on the Optoma Projector. When I do this, my internet connection drops to practically zero (just a few kilobits per second). When I move the browser away from the projector, and over to one of my Samsung monitors, the internet connection comes right back. Note that the Optoma projector is on and enabled as a third monitor all this time. I can move the mouse around on the projector without triggering the problem. I tried pinging my router when I was playing a movie on one of the monitors, and I get a 1 millisecond response. However, when I have the movie playing on the Optoma projecter, pinging the router gives me response times in the hundreds of milliseconds, or times out completely. So, it clearly is something local to my machine - and not some sort of throttling occurring down the line. I would think that it is possibly something to do with the HDMI driver conflicting somehow with my network driver (which is a USB-based wireless connection). This one has me really stumped. Anyone have any ideas?

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• Why would my wireless cut in and out every minute or so?

  - by Strilanc

  I've been having problems with my wireless. I moved to a new apartment, and the wireless seems incredibly unreliable. Sometimes it will be stable for hours until, all of a sudden, it starts cutting in and out. I'll get 30-90 seconds of normal behavior, then 5-30 seconds of nothing, then repeat. Sometimes the connection will stop working entirely, until I power-cycle the router. It is extremely, extremely annoying. Surfing the web isn't too bad, assuming you can stand the random 5-30 second waits. But some connections are sensitive enough to timeout, and it certainly makes multiplayer games unplayable. Facts: I confirmed the problem using ping google.com -t. I get normal traffic, interspersed with bursts of "Request timed out.". I've never had this problem before with this laptop. I didn't bring my own router or modem to the apartment. I'm using what the old tenant had. Hooking directly to the modem via an ethernet cable results in a stable connection. Temporarily cutting power to the router sometimes fixes the problem. Sometimes it doesn't. I reset the router, but the problem remained. Apparently the previous tenant had issues with the internet, but I don't know what they were specifically. The router is a D-Link DIR-615, and their tech support is useless.

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• Why can't I connect to my router's config page with Windows 7?

  - by user17940

  I've got a Belkin wireless router, and just bought a new Dell computer with Windows 7 pre-installed. I can connect to the Internet and my home network just fine, but when I try to visit my router's configuration page at http://192.168.2.1, I get a "Connection was reset" error. Nothing I do will make the router's configuration page come up in my web browser. More background information: I could always get to the router's config page from my Windows XP machine. I never had any trouble prior to getting this Windows 7 computer. I can ping 192.168.2.1 successfully from my Windows 7 computer. My PC is connected to the router by a physical CAT5 cable, not via wireless. Every device connected to my router, including the new computer, can get to the Internet with no problem. Here are some things that did not solve the problem: I tried turning off IPV6 in Windows. I tried turning off my firewall and antivirus software I tried using https instead of http I tried disabling and then enabling the network connection in Windows I tried reverting my network card driver back to an older version I have tried both Firefox and Internet Explorer web browsers. Has anyone experienced something like this before, and solved it? Thanks a lot for your help!

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• Cisco Access switch is dropping large amount of end points

  - by user135458

  This afternoon, with no changes to the network, a switch suddenly started dropping off lots of connections. These connections would come back up a few minutes later, then another area connected to the switch would drop off. This is an older 4006 chassis switch which could in and of itself be a problem but I'm looking to see what else you all would look for in trying to find a root cause. Switch is connected via ports 1/1 and 1/2 in an etherchannel to a VSS core 1/1/42 and 2/1/42. Both sides are up and working however the CPU on the switch will spike up to 99% and that's when CRC errors start to hit the VSS core on one of those interfaces and end points start dropping off. We tried new transceivers and SFP's on each side of the link, same result. When we tried swapping the fiber patch cables on the access switch the CRC errors did not follow the fiber cables they stayed with port 1/2 on the access switch. So port 1/2 on the supervisor module looks like the culprit. We actually tried to create a new member of the ethernet channel by taking a fiber media converter to cat5 and make that a member of the port-channel but when we plugged it in you couldn't even reach the switch. I'm guessing that's unrelated and a problem with the media converter. As of right now we have left it in a state of only one fiber cable running to one side of the VSS core (1/1 Access Switch -- 2/1/42). I've sent some info into TAC and they are looking into the situation but does anyone else have any commands I could run or some troubleshooting I could look into in the meantime?

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• Problems with 5.1 digital out on Ubuntu 12.04

  - by user895319

  I've recently bought a new PC, installed Ubuntu and am now unable to get 5.1 digital sound working. Simple analogue stereo works fine on both the front and rear connectors. On my old box I connected the coax connection from my soundcard to my surround sound amplifier, set Settings-Sound to "Digital Stereo Duplex" and it worked. My old soundcard doesn't fit in my new machine so I'm using the built-in sound hardware. I'm connecting the combination output socket on the back of the PC via the same cable to my surround amp as before. The MB is an MSI Global H61M-P31 with an RealTek ALC887 sound chip. When I go to Settings-Sound I only see "Headphone Built-in Audio" and "Analogue Output Built-in Audio" - no digitial options. The output from aplay -l is: default Playback/recording through the PulseAudio sound server sysdefault:CARD=PCH HDA Intel PCH, ALC887-VD Analog Default Audio Device front:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog Front speakers surround40:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog 4.0 Surround output to Front and Rear speakers surround41:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog 4.1 Surround output to Front, Rear and Subwoofer speakers surround50:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog 5.0 Surround output to Front, Center and Rear speakers surround51:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog 5.1 Surround output to Front, Center, Rear and Subwoofer speakers surround71:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog 7.1 Surround output to Front, Center, Side, Rear and Woofer speakers dmix:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog Direct sample mixing device dsnoop:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog Direct sample snooping device hw:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog Direct hardware device without any conversions plughw:CARD=PCH,DEV=0 HDA Intel PCH, ALC887-VD Analog Hardware device with all software conversions While googling for ALC887 I've seen some references to "ALC887 -VD Analog" and some to "ALC887 -VD Digital". Does anyone know if I need to force it to chance mode somehow? It's worth mentioning that when I set the output to 5.1 digital surround in Windows 7 on the same machine I still don't get any sound so it's not a unique Linux problem. Thanks for any help.

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• 10 GigE interfaces limits single connection throughput to 1 Gb on a ProCurve 4208vl

  - by wazoox

  The setup is as follow : 3 Linux servers with Intel CX4 10 GigE controllers and an X-Serve with a Myricom 10 GigE CX4 controller are connected to a ProCurve 4208vl switch, with a myriad of other machines connected through good ol' 1000 base-T. The interfaces are actually set up as 10 Gig, according to both the switch monitoring interface and the servers (ethtool, etc). However a single connection between two 10 GigE equipped machines through the switch is limited to exactly 1Gb. If I connect two of the 10 GigE machines directly with a CX4 cable, netperf reports the link bandwidth as 9000 Mb/s. NFS achieves about 550 MB/s transfers. But when I'm using the switch, the connection tops at 950 Mb/s through netperf and 110 MB/s with NFS. When I open several connections from 3 of the machines to the 4th, I get 350 MB/s of NFS transfer speed. So each individual 10 GigE ports actually can reach much more than 1 Gb, but individual connections are strictly limited to 1 Gb. Conclusion : the 10 GigE connection through the switch behaves exactly like a trunk of 10 1 Gb connections. That doesn't make any sense to me, unless HP planned these ports only for cascading switches or strictly for many-clients-to-single-server connection. Unfortunately this is NOT the envisioned setup, we need big throughput from machine to machine. Is this a not-so-known (or carefully hidden...) limitation of this type of switch? Should I suggest seppuku to the HP representative? Does anyone have any idea on how to enable a proper behaviour ? I upgraded for an hefty price from bonded 1Gb links to 10 GigE and see exactly ZERO gain! That's absolutely unacceptable.

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• Wireless connection drops when wired computer starts a game.

  - by Skadlig

  Starting this week I have had a strange problem on my network. Some background of my setup: Internet is provided by a adsl-modem. A D-link Dir-600 router is hooked up to to adsl-modem. My computer is hooked up to the router using a cat-5 cable. My wife's computer is hooked up using a wireless usb dongle, TP-Link TL-WN821N. Both computers use windows 7 64-bit home premium. Up until this week everything was normal, we could for instance play Dungeons & Dragons Online together without any network issues. Now every time I start DDO or any other network game, for instance L4D, the whole wireless network drops. I have confirmed that it's not just her computer using an Samsung Galaxy Spica android phone. Shutting down the game on my end restores the wireless connection automagicly. My wife can start DDO without the net dropping but if I plug in a wireless network card in my computer and start up the game the connection drops. So it seems like something my computer, and my computer only, does when starting a game makes the wireless connection write a sad note and kill it self but for the life of me I can't figure out what that might be. I could hook her computer up using cat-5 but I would prefer not to do that. Does anyone have any suggestions as to what the problem might be, what I can do to fix it or what I should do to get more data regarding what is happening?

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