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• Desktop appliciations are unable to launch my browser in Windows 8 [migrated]

  - by Alex Ford

  I have a fresh copy of Windows 8 Pro installed from MSDN. I have Google Chrome installed (stable channel) and it is set as my default browser. I even went into Control Panel Default Programs to ensure that Chrome had all its defaults. When other desktop applications try to launch my browser they always fail. For example, while trying to install the Android SDK for Windows the installer accurately detected that I did not have the JDK installed. It provides a friendly button to visit java.oracle.com. When pressing this button, nothing happens at all. You can see that here: http://youtu.be/XXL8GhuWWg0 If it were only that application that was having issues I wouldn't think anything of it but I have been encountering similar issues all over the place. Probably the most irritating one is when visual studio has updates; clicking the update button does nothing. http://www.youtube.com/watch?v=zwd1mn3TId0 You can see in that screencast that Visual Studio is not able to launch the browser no matter what I click. The update button doesn't do anything and neither do the two links in the update's description. Any suggestions? I'm assuming it's a Windows issue since it is happening in multiple applications.

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• TortoiseSVN client slows Explorer to a crawl in Windows XP running in Parallels

  - by Cory Larson

  I thought I'd make my first SuperUser question relatively simple, though it's the kind of question that may not get many responses as I'm not directly involved with the issue. A colleague does his development in Windows XP running in Parallels on his Mac. We've just migrated our VSS repository to SVN, and we've gone with TortoiseSVN as our client of choice with the Ankhsvn plugin for Visual Studio. On his XP instance, after installing TortoiseSVN, browsing through folders using Explorer is extremely slow; about 15 - 30 seconds before the contents of the next folder displays. It's the slowest when opening My Computer. Once he reaches a folder that contains the working content of an SVN project, Explorer behaves quickly again as expected. It seems that TortoiseSVN may be spending a bunch of time searching subfolders for stuff so it can do its icon-overlay thing, but that's just a guess. I've used TortoiseSVN for years on both XP and Vista on far less powerful machines without any issues with Explorer, so I'm attributing the slowness to it being run in a VM, though that may not be the actual issue. So has anyone encountered similar performance issues, and/or know of a fix? Keep in mind that any requests to make changes to his configuration will need to be communicated and thus my response time might be slow. Thanks everyone!

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• What hardware would I need (approx) to run ESXi server?

  - by mr.b

  Hi, I am considering to purchase off-the-shelf commodity hardware in order to build server that will host virtual machines using ESXi server. Intended purpose for this server is NOT mission critical tasks. It will have to run perhaps 20-50 Windows XP/Vista/7 virtual machines (in total, but closer to 20 figure). Each guest would have to have 1-2 GB of ram, and probably two-three times more disk space than guest OS needs with clean install and all updates applied (that would be around 6-8 GB for XP, and i believe closer to 10-15 for win7). Those guests will act as a test ground for a new product that is network management software, thus guests will idle most of their time once initially loaded, but if I give them some task to complete, they should be able to perform reasonably well. Now, from what I have learned... CPU is usually not much of an issue (6 cores would do it), memory should not be lacking, but doesn't have to be sum of all guests, because of overcommitment... That leads me to IO, which is, as it seems, the bottleneck. Since I have very little experience with ESXi (and ESX, too) server, I'd like to ask: How much memory could I save by overcommitment, and how does it affect performance? Is 6-core cpu enough to run above described system? Would it be possible to run entire server off two (or even one) SSD drives (to host system virtual disks, with few additional HDDs (2-3) in RAID 0 to be used as secondary storage? I read somewhere that ESXi allows having something like "master image", essentially virtual machine that is "deployed" many times, so that disk space can be saved by having only differences stored by specific guests, instead of copying around whole virtual disks. Is this true, and how can this help me? Are there any other things I need to take into consideration when building this off-the-shelf solution? I should probably mention here that I'm fully aware of issues like SPOF regarding power supply, raid 0, etc, but since it's only a testing ground and not a production system, it's not so important for me. Thanks, B.

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• SSD not detected on boot up running windows 7, with installed blank hdd

  - by Matt. G

  I have recently built a PC for a friend, after the original system build, which included a 60GB primary SSD and a secondary 1TB HDD. I kept getting blue screens of death and kernel power errors, after investigation it was revealed that a faulty power cable and insufficient thermal paste provided with the included heat sink was the cause. This resolved the problem but after 3 months I received a phone call saying that the PC was not starting at the point of loading the operating system, with an NTLDR error. I had an idea of the cause, and after the user removed the HDD the computer started up with no issues, then I asked him to power off and reattach the HDD, and this completely resolved the issue; beforehand even restarting would not fix it. He does not have a surge protector and I thought that maybe some registry corruption had occurred due to a power surge, this might be a stupid answer though. Any ideas to what occurred with the machine would be most appreciated. No other issues have been found since the initial fault. The PC uses Windows 7 Home Premium installed on the SSD.

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• How to diagnose issue between mobo, RAID, and SSD cache drive? [migrated]

  - by goober

  Background This issue is happening on my custom-built desktop. Relevant specs: Motherboard: ASUS P8Z68-V PRO Utilizing Intel RST technology (application that uses unused SSD as cache) Processor: Intel core i7-2600k (not overclocked) HDDs: RAID1 of 2x Seagate Barracuda 1TB (ST31000524AS) (RAID performed via z68 chipset) Machine has run fine for ~1 year with no issues, and has been well-maintained (dust, etc.) What Happened Random Freezing issues -- intermittent Looked at the RST application screen to see that the acceleration cache was listed as "unavailable" -- recommended that I power down and reconnect the drive. Reconnected the drive to no avail. Attempted to move the drive to another SATA port. Acceleration option disappeared from RST software. Now, the freeze happens whenever loading something particularly data-driven (a video, a game, etc.) Steps Attempted Reconnected the drive to no avail. Updated Intel RST software to v. 11.6.0.1030 to see if that made a difference. Attempted to move the drive to another SATA port. Acceleration option disappeared from RST software. Connected the drive as its own volume. Formatted it, ran disk check errors -- all seems fine. Reconnected the drive and selected it again as the cache drive. Now, what happens when there is a freeze: Machine freezes I am unable to perform any command Screen then goes black I hit the reset button During boot, all drives show as "Disabled" and I am told no volume can be found I then hit the reset button (or power off/on) again. Either the next time (or sometimes after repeating this once more), the metadata cache is reconstructed and the system boots fine, showing the SSD as a cache. Question I believe this is an issue with the SSD itself, but how can I be sure since connecting it separately appeared to show no problems? I want to make sure it's not an issue with the motherboard, SATA ports, etc.

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• Running router as virtual machine, can it be realible ?

  - by Kr1stian

  Hi all Does anyone here run their routing through virtual machine, have virtual machine setup as main router/getaway etc ? If yes, how many clients are using this kind of setup ? For those who are wondering why I'm asking this. I got assignment for my internship to create all in one "box" which would do routing and be IP PBX in one time ( only open source solutions can be used, expect RouterOS). The routing part is currently done through RouterOS and for VoIP they want to use sipXecs. RouterOS supports virtualization through KVM, but RouterOS itself only supports 2GB of memory ( and wont support more in near future). sipXecs needs allot more than 2GB. I told them that we could solve this problem by putting RouterOS as virtual machine to 64bit hostOS ( e.g. CentOS), and other virtual machine would run sipXecs. By that we would be able to use whole memory. But they told me that it's to risky to do something like that and that they need something with "enterprise stability/reliability". I told them that we could make redundant image of each VM which would automatically start if one VM stop's working, but I was told the same thing. So this is why I asked those question above, to see if I really suggested something that's not good to do, or maybe this is something completely normal and it can be done with "enterprise stability/reliability" :) Thank you for answers, Kristian

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• Ubuntu inside VirtualBox is slow

  - by Kapsh

  I am running an Ubuntu instance on VirtualBox inside XP. Here are the details: Host: Windows XP Pro Guest: Ubuntu 8.10 Total RAM: 3GB RAM For VM: 1GB Total Video Memory: 128MB Video Memory for VM: 40MB Hard Drive: 200GB Hard Drive for VM: 30GB Processor: 2.80GHz Core Duo The problem is that whenever I am inside the virtual machine, things seem so much slower in general. For example Firefox, Eclipse take longer to load, dragging windows show a lag etc. I have tried running Ubuntu before (not inside a VM) and it seemed fantastically fast. So I am disappointed to have to deal with this situation. But I need access to the XP partition without having to reboot and hence the attempt. I am surprised with the perceived slowness since the whole world seems to be doing virtualization and I cannot imagine everyone works on slow systems knowingly. My question is - is there something I should be doing to boost performance? Am I doing something wrong? This is my home machine and I am not sure if this is the right forum to ask. Thanks.

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• why would resetting the Netgear N300 router fix my Win 7 laptop's slow wifi?

  - by rjnagle

  In the past day the wifi download speeds of my Win 7 HP 64 bit laptop have slowed considerably. I am trying to troubleshoot the problem and to figure out whether it's hardware related (i.e., is the Intel(R) Centrino(R) Wireless-N 2230 the problem?) or router related. I have a Netgear N300 router connected to my modem. I'm using Speedtest to measure my speed. First, during my problem state, my ipad can download and upload at normal speeds. It's only my Win 7 laptop which is having problems. Because my ipad downloads at normal speeds, that would tell me that the problem is specific to the laptop (either HW or SW). But when I restarted my Netgear router, the laptop wifi problems disappeared. That just doesn't make sense. If we know that one device can connect properly to the router, why would a laptop have problems? What are some possible reasons why this might happen? Also, during my problem state, I noticed that on my laptop upload speeds were faster than my download speeds. Anybody have a guess about what might cause upload speeds on one device to be faster than another? Is there any actions i could take (or options to enable) so this problem won't occur. (I initially thought my problem might be software related or memory related -- Norton AV or browser plugins. But even after I disabled everything and made sure memory footprint was minimal, the slowdown was still occurring -- and it solved itself altogether when the router was reset).

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• Nagios DNX plugins

  - by danneh3826

  I'm toying with the idea of multiple Nagios instances setup to monitor our infrastructure. I've looked at all the various methods of distributed Nagios checks, and I think DNX comes out the closest. DNX handles failure of worker nodes, that's fine. What happens if the main DNX server fails though? Is there a way to replicate the server too? I'm using AWS EC2 primarily, so I can utilise Elastic Load Balancing for the web UI, but I need to be able to handle the AZ where the monitoring server is to fail over, and essentially for a second to pick up the checking load (active/passive, active/active, so long as it doesn't fail completely) The other thing I'm trying to solve is an issue with routing. What I'd like is to have multiple nodes report a fault before Nagios confirms it as critical. Not the NRPE checks, as they're pretty self explanitory, but things more like check_ping. I often have routing issues out of AWS to certain datacenters, so Nagios can often report bad/no ping/timeout as a critical issue, even though the machine in question is working fine. Would it be possible to have a setup where a worker complains a service check is critical, and have a second worker node (positioned in another datacenter/AZ) also report the service as critical before the Nagios central server issues a critical alert? I realise I might be asking a bit much (how far down the line do you go setting up failover systems before it starts to get ridiculous), however surely someone must have thought of this scenario when developing DNX?

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• Unexpected media key behavior on new Acer Aspire

  - by Morgan May

  I'm having weird issues with the media keys (play/pause, previous, next, etc.) on a new Acer Aspire laptop. This is the first Acer I've owned and also my first Windows 7 computer, so I'm not sure whether the behavior is a result of some hidden Acer process that I haven't rooted out yet, or some Windows 7 option that I'm not aware of, or something else. I'm experiencing two issues that I suspect are related. Both problems are intermittent but happen more often than not. The media player I'm using is Winamp. I'm pretty sure I've had the same problem when using other media players, but when I tried to verify that before posting this, I only had the problems with Winamp. Because the problems are intermittent, I'm not sure if that's significant. 1) When I press the Play/Pause media key, in addition to playing or pausing the media player, it brings up a little menu in the center of the screen that lists my removable drives (CD/DVD, USB drives, etc.). To make the menu go away I have to either click away from it or hit Escape. Selecting a drive on the menu doesn't seem to do anything. 2) When I press the Previous or Next media keys, it skips 2+ tracks instead of just one (the exact number seems to vary). I've poked around all the control panel options that I can find, and looked through all the utilities that came with the computer with no luck. There's nothing that I can find in the (very slim) documentation, either. I have a hunch that the problem is caused by whatever utility manages global hotkeys, but I haven't found any way to configure that. Any guidance would be greatly appreciated. UPDATE: It looks like Winamp was the culprit. I did have the problem when using other media players, but when I uninstalled Winamp, the problem went away. I'd like to use Winamp, but I can survive with other players.

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• NFS on top of GFS2 - does it work?

  - by Matthew

  We're currently using a NoSQL derivative called Splunk to receive our data. The software supports something called "search head pooling" in which the job-dispatching engine is housed on several servers which share a common storage point. Originally our intention was to use a clustered filesystem like GFS2 because of low latency, stability, and ease of setup. We set up GFS2, and it's working with no issues. However when trying to run the software, it's trying to create lock files, and a bunch of other things that their support team can't quite explain. Ultimate feedback from them was that they only support NFS. Our network administration team heavily frowns on NFS (lack of stability, file lock issues, etc). So, I was thinking about the possibility of setting up NFS on each server in the cluster to act as a wedge layer between the GFS2 filesystem and the software. Basically configure each server to export the GFS2 filesystem's mountpoint via NFS, and then tell each server to connect to that NFS share. That way we aren't introducing any single-points-of-failure should a dedicated NFS server go down, but the vendor gets their "required" NFS share. I'm just brainstorming ways around, so please tear this apart :)

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• Netbook thinks it is a desktop

  - by Narcolapser

  Question: Are, and if so what, there packages for download that I can get netbook to understand it is not a desktop and that it is a netbook. Info: I'm running an Acer Aspire One with ubuntu desktop 9.10. I tried Ubuntu Netbook Remix first but it has graphics issues with the aspire one. So I changed to Ubuntu Desktop. It was the only distro (after debian, centOS, Fedora, and Knoppix all failed me) that I managed to get working. The only thing is that it is having issues doing things that a netbook/laptop should be doing. most notably is that it will run it's battery dead if I close the screen and throw it into my back pack. It seems to just stay fully on and runs it's self to death. also it will lock up some times if I close the screen and come back to it 10 or 20 minutes later. It also won't retain volume settings when I reboot, as well as screen brightness. and just a couple of other things that I can't quite put my finger on, but just seem amiss. like I said, Essentially my netbook thinks it is a desktop, how can I fix this? ~N

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• Backtrack, Wi-Fi not working

  - by hradecek

  I've installed Backtrack 5R3 KDE, and I realized that my wireless is not working, but wired is working fine. Here's the lshw output: *-network description: Ethernet interface product: RTL8101E/RTL8102E PCI Express Fast Ethernet controller vendor: Realtek Semiconductor Co., Ltd. physical id: 0 bus info: pci@0000:02:00.0 logical name: eth0 version: 05 serial: 04:7d:7b:b7:46:f8 size: 100MB/s capacity: 100MB/s width: 64 bits clock: 33MHz capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl_nic/rtl8105e-1.fw ip=192.168.2.2 latency=0 link=yes multicast=yes port=MII speed=100MB/s resources: irq:42 ioport:2000(size=256) memory:f0404000-f0404fff memory:f0400000-f0403fff lspci output: 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) 00:14.0 USB Controller: Intel Corporation Panther Point USB xHCI Host Controller (rev 04) 00:16.0 Communication controller: Intel Corporation Panther Point MEI Controller #1 (rev 04) 00:1a.0 USB Controller: Intel Corporation Panther Point USB Enhanced Host Controller #2 (rev 04) 00:1b.0 Audio device: Intel Corporation Panther Point High Definition Audio Controller (rev 04) 00:1c.0 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 1 (rev c4) 00:1c.1 PCI bridge: Intel Corporation Panther Point PCI Express Root Port 2 (rev c4) 00:1d.0 USB Controller: Intel Corporation Panther Point USB Enhanced Host Controller #1 (rev 04) 00:1f.0 ISA bridge: Intel Corporation Panther Point LPC Controller (rev 04) 00:1f.2 SATA controller: Intel Corporation Panther Point 6 port SATA AHCI Controller (rev 04) 00:1f.3 SMBus: Intel Corporation Panther Point SMBus Controller (rev 04) 02:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 05)

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• Dropbox picture sync: Skip RAW files?

  - by Steven Lu

  I like the convenience of having Dropbox keep track of my photos because it tends to work with my devices over 3G (I am often tethering to my phone with my iPad and Macbook) as well as Wifi, but it's a waste of network traffic to sync the raw files from my camera or memory card. It clutters up the dropbox list and the files are just huge. Is there a way to configure the Dropbox client so that it ignores a certain file extension for the picture sync? Also, I suspect that if I just go and delete the raw files, that the next time I plug in the memory card and tell Dropbox to sync, it will re-download the raw files. Which would be terribad. I could switch to iCloud for Photo Stream, I suppose, but there will be no access via 3G that way. And I've already got years of experience with Dropbox so I know it's going to just work. I think any method that works for filtering files to exclude from sync on Dropbox in general should work here too. Edit: Wow there are 19k votes for this exact request.

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• Application that will identify percentage of your system disk bandwidth used on a user-application by user-application basis?

  - by Warren P

  I always (subjectively) feel my computer is far too slow (however fast it is), and so I'm always looking for ways to measure and understand what my computer is actually doing, that is making it seem "slow" to me. It has been my observation that my software-developer workload is most often disk-bound (I am waiting for Disk I/O) more than CPU bound. What has made it worse, is that I am using a corporate PC that has in-memory active-scanning anti-virus software that I do not have control over, and also some IT department mandated services that seem to suck up a lot of available hard-disk bandwidth. The best tool I have seen (in Windows 7) is the Resource Monitor which I usually acess from the button in the task Manager. The disk IO page, however, seems to label Disk Activity at a very low level (for example, showing the Volume Shadow Storage, which is flushing information obviously written by something ELSE other than VSS itself, and then writes to Pagefile.sys, which are obviously due to Virtual Memory faults in some application). What I would like to know is if a utility exists that can add up all direct disk input and output by user-level process, or find the process or service that caused VM or VSS activity. In that way, I hope, you could establish a real idea of how much of your computer's precious disk subsystem bandwidth is attributable to a particular application. here's a scenario: MyApp.exe writes 100k/s and reads 100k/s directly. VSS ends up writing another 100k/s. pagefaults caused inside MyApp.exe cause another 100k/s of writes. So the total "cost" of MyApp.exe running, during a period of time (let's say 1 second) is 400k/s, whereas you can only directly observe half of that, in Resource Monitor. Is there a smarter disk-IO watching piece of software I can use?

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• Windows 7 not booting up and stuck at startup repair

  - by mikimr

  I've been having issues with Windows 7 Home Premium on a Lenovo laptop. At first, it would not start up normally at all. I started it in Safe Mode, where I disabled all non-MS services and tried again to no avail. It then goes into Startup repair where it failed several times. I tried copying the original registry settings, still the same. I resorted to booting with an Ubuntu DVD, where I ran the boot-repair, where it is supposed to correct the Windows boot. No luck. I used Win7 DVD to start up from there, where I had the option to install or repair. I chose the repair, got into command prompt, ran chkdsk /i /r, where it found 3 unreadable segments, went through the 2nd step without issues, and the 3rd step completed with some errors (can't recall the exact errors). When I restarted the machine, it went to straight to the Stratup Repair, indicating "Attempting repairs... Repairing dis errors. This might take over an hour to complete." It's been like this for nearly 15 hours. When I try to cancel or close the Startup Repair window, I get a message "The current repair operation cannot be cancelled." Should I let it run or force shut the machine? If force shut, how can I resolve this problem? Thanks.

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• php-cgi.exe Taking out server, multiple running

  - by Alex

  I have been using ZendServer CE for over a year and have never had a problem. Recently, about a week or two ago I have found my server to be acting up and even causing RDP to be un-connectable. After some looking around I have 20, 25, 30+ php-cgi.exe running. With my IIS7 service starting with Windows once my server started all these php-cgi.exe would start running (even though the limit is 10) and I could not even connect to it. After disabling the Web Server as startup which stops php-cgi.exe from running the server runs flawless, like it always has. As soon as I run the web server all these odd issues start. I have a post over at Zend http://forums.zend.com/viewtopic.php?f=44&t=41043&p=95133 where I was told to update my Zend install. After doing so this issue has not gone away. Even running 1 php-cgi.exe (somehow 2 start anyway) the server begins to go silly. The first issue I find myself with running php-cgi.exe is that Windows Services, weather be stock or using FireDaemon begin to lag, slow start, crash, etc. If anyone can help me with this I would GREATLY appreciate it. At this time I am forced to look for a alternative to running PHP other than cgi as it simply takes out the whole box. On another note, I run this same version of Zend on a similar server with no issues. Starting to think its a IIS issue. (UPDATE) Installed newest version of PHP, separate from Zend, same issue. Server Specs: Intel Xeon Quad w HT Nehlam Based 24GB DDR3 1333 2x1TB Raid Mirror OS 2x1TB Raid Mirror (Other) 4x2TB Raid 5 (Storage) Server 2008 R2

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• How do I prevent my computer from freezing when it starts to swap?

  - by cdauth

  I work as a Java programmer, so I often have to run several programs at the same time that consume a lot of memory. When my memory is full and Linux starts swapping, my computer almost completely freezes. I can see that it is heavily writing on the hard-disk and everything reacts really slowly, often not at all. Moving the mouse in X sometimes doesn’t work at all, sometimes it has a delay of several seconds, clicking usually has a delay of several minutes. Sometimes it is possible to change to the TTY (with a long delay), there I can usually type without delay, but when I try to log in, it takes several minutes after typing in the user name until the password prompt appears, and usually an error message appears that tells me that the login timed out. So the only possibility is usually to restart the computer. I noticed that other intensive writing to the hard disk also significantly slows down my computer. Sometimes, I used rsync to limit the bandwidth when I copied files around on my own computer, as else the system would be almost unusable. How can this be? At the moment it seems more useful to me to completely turn off swapping. That might crash some processes, which is unfortunate, but the alternative at the moment is to crash all processes by turning off my computer. I am using Gentoo Linux with kernel 3.6.2-gentoo, I have a 10 GB swap partition on a HDD.

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• Synchronizing the SamAccountName Property using Windows Azure Active Directory Sync Tool

  - by pk.

  Using this official documentation as a guide, I would expect the SamAccountName property to sync from my on-premise AD to Office 365. I think that it used to do exactly that, but now it seems that it doesn't so much sync the attribute as it does create an entirely new, unlinked value and store it in Office 365. This has caused some minor issues for me (broken scripts, annoying permissions management, etc.) and may be part of a more major issue regarding ADFS authentication. On-Premise PS C:\Windows\system32> Get-ADUser jdoe -Properties SamAccountName | fl SamAccountName SamAccountName : jdoe Office 365 Sync'ed Objects PS C:\Windows\system32> Get-Mailbox jdoe | fl SamAccountName SamAccountName : $1A7H20-K1LCOJFFBHGS I understand how to work around this issue in my scripts -- there exists the ImmutableId property which can be mapped back to the on-premise GUID. As far as the issue I'm having with ADFS, I'm less certain how to proceed and if this is causing my issues. At this point I really would just like some verification that I'm not crazy and that this used to be sync'ed at some point in the past and that Office 365 broke it relatively recently. I also think that MS documentation should perhaps be updated to exclude SamAccountName from the list of synchronized properties on the page I linked.

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• How to prevent an SSD from disappearing from BIOS

  - by Midimatt

  I've only recently upgraded my old machine to a new one with a brand new 60gb SSD as my boot drive and a 1TB main drive. Paranoid about completely breaking my SSD, I read up on a lot of issues that I needed to watch out for, including making sure AHCI was turned on and trim enabled. PC has been working fine for a few weeks now, until today. My wife was watching some TV on the machine when it started to act strange and eventually blue screened. She rebooted and the boot mgr was missing. When I got home from work I checked the BIOS and the drive had disappeared. I panicked and looked up some possible fixes, and I discovered a large amount of people having problems with the drive firmware, especially on OCZ Vertex and Agility drives, and my drive is an Agility 3 drive. The problems included blue screens followed by missing drives, and a solution was to reset the CMOS and try again. This worked, and now everything seems to be working fine. My question is, is there any way to prevent this from happening? Am I missing a setting for my SSD? All of the posts I found were from early to mid-2011 nothing for the end of 2011 to 2012. So I am wondering if I've missed anything. EDIT: Checked my drives firmware and it is 2.15, which has had issues reported by users.

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• Is my motherboard failing, or is there some other issue?

  - by ThatGuy

  So, several months ago I put together my own desktop PC. I set up a dual boot to Windows and Ubuntu. Recently, without changing any settings or installing anything new, the wifi stopped working on windows (I use a wifi adapter). It said it was connected, Network settings showed that it was working and running trouble shooting had no results. My internet still works on any other device. I found that removing the adapter from the motherboard and plugging it back in was the only thing that fixed the problem. Reinstalling the wifi drivers did not help. I purchased a new Wifi adapter, but the problem persists. More recently, I had a much more discouraging development. Sometimes, turning on the computer results in a boot loop: BIOS never starts. Instead, the monitor turns on as if it got a signal, then immediately turns off. This loops on it's own indefinitely until I hold down power, hard reset it, and try again. Sometimes it works, sometimes it doesn't. I haven't tested much on the Ubuntu side. It appears that wifi works at least some of the time, but since I've had issues just getting to BIOS I'm not confident the issue is on the software side. I've also noticed issues with some of the USB ports no longer working, but that seems to be off and on. Finally, as of a few minutes ago, I booted to windows to discover that everything was running very slowly. Slow here is a relative word, but I have a Samsung 840 pro SSD and I'm used to applications running nigh instantly, and it was a solid 3 minutes before any of my applications would load. Anyway, my question is this: Is it likely that my motherboard is failing? Either way, what steps can I take to try and pin down the problem and figure out what to do?

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• Why does my ftp(e)s server fails like half of the time

  - by user1092608

  I have this discussion at work regarding our ftp server running via vsftpd. Initially, we have opted to serve ftpes instead of sftp because this seemed the most flexible and straightforward solution for our server to have secure file transmission. Afterwards, our ftp server seems to be a source of issues for our end users. Half of the time, users complain about not working ftp connections. I must say, i tested our FTP trough different infrastructures (=in the field, at random times at random places) and indeed, sometimes behind some configurations (=no idea how they are configured, because the 'field' testing), i recieve errors. Some of the are: Error: Failed to retrieve directory listing (filezilla) Furthermore, behind my basic home configuration, everything seems to be running fine. I (think I) did all the basic configuration checks (passive mode?, firewall for all ports?, ...) and can't seem to find the source. Being a bunch of techies at our small office, yet knowing nothing about infrastructure, some start suggesting that ftps protocol could be the source of issues. ("No, i only knew sftp so far" "Ftps is not widespread"). I, however, strongly doubt this hypothesis, since reading around on the www, asking questions on serverfault, everyone seems to deny this. So, as I would like to avoid reconfiguring, since this involves messing around in our SSH service, our virtual user setup and ftp service, i would need some advice on 1) what could be potentially the general cause? 2) do you have some general tips? 3) would you mind having a look at my configuration file? ----- General Settings ----- write_enable=YES dirmessage_enable=YES nopriv_user=ftpsecure ftpd_banner="Welcome to XXXX FTP!" hide_ids=YES hide_file=.* max_per_ip=10 max_clients=10 local_enable=YES local_umask=022 chroot_local_user=YES secure_chroot_dir=/usr/share/empty userlist_enable=NO userlist_deny=YES userlist_file=/etc/vsftp_deny_users guest_enable=YES guest_username=ftpvirtual virtual_use_local_privs=YES user_sub_token=$USER local_root=/srv/ftp/ftpvirtual/$USER anonymous_enable=NO syslog_enable=NO xferlog_enable=YES xferlog_file=/var/log/vsftpd_xfer.log connect_from_port_20=YES pam_service_name=vsftpd listen=YES listen_port=21 pasv_enable=YES pasv_min_port=30000 pasv_max_port=30030 pasv_address=foo ssl_enable=YES rsa_cert_file=/etc/vsftpd.pem rsa_private_key_file=/etc/vsftpd.pem force_local_data_ssl=YES force_local_logins_ssl=YES ssl_tlsv1=YES ssl_sslv2=YES ssl_sslv3=YES ssl_ciphers=HIGH anon_mkdir_write_enable=NO anon_root=/srv/ftp anon_upload_enable=NO idle_session_timeout=900 log_ftp_protocol=NO dsa_cert_file=/etc/vsftpd.pem Thanks

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• Website latency and bad tcp packets

  - by Mistero Lupo

  I have multiple websites hosted on a Linode VPS and I'm having an issue with one of them: every page that I try to load has about 10 seconds latency. Apache logs are clean and the other websites on the same machine are running well. At a first glance I tought it was a memory problem since the VPS has got only 512M, but from the linode dashboard CPU and Disk I/O are normal. Anyway here we have the ram status: $ free -m total used free shared buffers cached Mem: 487 463 23 0 2 55 -/+ buffers/cache: 404 82 Swap: 255 155 100 Only 23M free, but if it was a memory problem why other websites are going as usual? I took a live capture with wireshark, and there are some duplicates SYN ACK packets just before the 10 seconds gap. I'm out of ideas, looking for some clues. Wireshark live capture screenshot As you can see from the image, the gap is after the last bad tcp. Thank you in advance. UPDATE I've checked Apache2 logs in debug error level, and this is where something is appening: 151.97.156.191 - - [14/Nov/2012:11:19:40 +0100] [www.fmaisi.it/sid#7f32c625a220][rid#7f32c6801578/subreq] (3) [perdir /home/fmaisi/sites/www.fmaisi.it/public_html/] applying pattern '^index\.php$' to uri 'index.php' 151.97.156.191 - - [14/Nov/2012:11:19:40 +0100] [www.fmaisi.it/sid#7f32c625a220][rid#7f32c6801578/subreq] (1) [perdir /home/fmaisi/sites/www.fmaisi.it/public_html/] pass through /home/fmaisi/sites/www.fmaisi.it/public_html/index.php 151.97.156.191 - - [14/Nov/2012:11:19:54 +0100] [www.fmaisi.it/sid#7f32c625a220][rid#7f32c6537c78/initial] (3) [perdir /home/fmaisi/sites/www.fmaisi.it/public_html/] strip per-dir prefix: /home/fmaisi/sites/www.fmaisi.it/public_html/wp-content/plugins/wp-filebase/wp-filebase_css.php -> wp-content/plugins/wp-filebase/wp-filebase_css.php 151.97.156.191 - - [14/Nov/2012:11:19:54 +0100] [www.fmaisi.it/sid#7f32c625a220][rid#7f32c6537c78/initial] (3) [perdir /home/fmaisi/sites/www.fmaisi.it/public_html/] applying pattern '^index\.php$' to uri 'wp-content/plugins/wp-filebase/wp-filebase_css.php' As you can see there is a gap of 14 seconds after the pass through of index.php. Any suggestions? I'm out of ideas again.

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• No outbound internet connection after restarting CentOS 6.3

  - by wnstnsmth

  After restarting a headless CentOS 6.3 machine, it lost outbound internet connectivity, i.e. I can still connect to the server via SSH (ssh root@**.126.18.56), but stuff such as ping google.com gives google.com: unknown host, and yum list some_package gives a lot of network errors. This is what ifconfig gives: eth0 Link encap:Ethernet HWaddr 00:25:90:78:2D:5D inet addr:**.126.18.56 Bcast:**.126.18.255 Mask:255.255.255.0 inet6 addr: fe80::225:90ff:fe78:2d5d/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:75594 errors:0 dropped:0 overruns:0 frame:0 TX packets:787 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:7074741 (6.7 MiB) TX bytes:144391 (141.0 KiB) Interrupt:20 Memory:f7a00000-f7a20000 eth1 Link encap:Ethernet HWaddr 00:25:90:78:2D:5C UP BROADCAST MULTICAST MTU:1500 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) Interrupt:16 Memory:f7900000-f7920000 lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:6 errors:0 dropped:0 overruns:0 frame:0 TX packets:6 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:504 (504.0 b) TX bytes:504 (504.0 b) I have absolutely no clue how to debug this, and I find it very strange since I can still connect via ssh. EDIT: Weirdly, /etc/resolv.conf does not contain any entries, or none that I can make sense of: # Generated by NetworkManager search sui-inter.net # No nameservers found; try putting DNS servers into your # ifcfg files in /etc/sysconfig/network-scripts like so: # # DNS1=xxx.xxx.xxx.xxx # DNS2=xxx.xxx.xxx.xxx # DOMAIN=lab.foo.com bar.foo.com So is it possible that rebooting the server erased that file? It worked before at least! And how do I solve this? By the way, pinging an IP address works.

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• Can't access certain web sites - reset router, any ideas?

  - by IniTech

  EDIT: This problem was resolved by my ISP - had to do with damaged fiber in one of their locations. Thanks to everyone that helped. Not sure if this is the right site (I'm a StackOverflow user) so I thought I'd give it a shot. I'm having trouble connecting to certain sites on any of the 3 machines that are on my LAN. The following sites are returning "Problem Loading Page - The connection has timed out" Sourceforge.net CNet.com Microsoft.com OpenDNS.com even my company's webiste I was worried about possible malware/virus, but I don't think that is the case (given the inability to access my company's site and the fact that all 3 machines are having the same issues.) I've tried with IE8, FF, and Chrome I have reset my router (WRT54G) and my machine(s) multiple times. EDIT: It is also worth noting that this page spins constantly and no avatars show up (I'm assuming it is trying to access gravatar.com with no success.) EDIT: I have the same issues directly connected to the modem. So, any router config is probably not the issue I'm a programmer, not a network guy - any ideas?

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