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• Filezilla client unable to get directory listing from Filezilla Server (Windows)

  - by sestocker

  I've set up a self signed certificate in FileZilla server and enabled FTP over SSL/TPS. When I connect from the client FileZilla, I am able to authenticate but cannot get a directory listing: Status: Connecting to MY_SERVER_IP:21... Status: Connection established, waiting for welcome message... Response: 220-FileZilla Server version 0.9.39 beta Response: 220-written by Tim Kosse ([email protected]) Response: 220 Please visit http://sourceforge.net/projects/filezilla/ Command: AUTH TLS Response: 234 Using authentication type TLS Status: Initializing TLS... Status: Verifying certificate... Command: USER MYUSER Status: TLS/SSL connection established. Response: 331 Password required for MYUSER Command: PASS ******** Response: 230 Logged on Command: PBSZ 0 Response: 200 PBSZ=0 Command: PROT P Response: 200 Protection level set to P Status: Connected Status: Retrieving directory listing... Command: PWD Response: 257 "/" is current directory. Command: TYPE I Response: 200 Type set to I Command: PORT 10,10,25,85,219,172 Response: 200 Port command successful Command: MLSD Response: 150 Opening data channel for directory list. Response: 425 Can't open data connection. Error: Failed to retrieve directory listing I have ports 21 and 50001 through 50005 open on the firewall. We are migrating servers - the 50001 - 50005 is one of the things that helped get FTPS working on the old server. I'm not sure this installation would use the same ports? What else could be the problem?

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• SFTP ChRoot result in broken pipe

  - by Patrick Pruneau

  I have a website that I want to add some restricted access to a sub-folder. For this, I've decided to use CHROOT with SFTP (I mostly followed this link : http://shapeshed.com/chroot_sftp_users_on_ubuntu_intrepid/) For now, I've created a user (sio2104) and a group (magento).After following the guide, my folder list look like this : -rw-r--r-- 1 root root 27 2012-02-01 14:23 index.html -rw-r--r-- 1 root root 21 2012-02-01 14:24 info.php drwx------ 15 root root 4096 2012-02-25 00:31 magento As you can see, i've chown root:root the folder magento I wanted to jail-in the user and ...everything else by the way. Also in the magento folder, I chown sio2104:magento everything so they can access what they want. Finally, I've added this to sshd_config file : #Subsystem sftp /usr/lib/openssh/sftp-server Subsystem sftp internal-sftp Match Group magento ChrootDirectory /usr/share/nginx/www/magento ForceCommand internal-sftp AllowTCPForwarding no X11Forwarding no PasswordAuthentication yes #UsePAM yes And the result is...well, I can enter my login, password and it's all finished with a "broken pipe" error. $ sftp [email protected] [....some debug....] [email protected]'s password: debug1: Authentication succeeded (password). Authenticated to 10.20.0.50 ([10.20.0.50]:22). debug1: channel 0: new [client-session] debug1: Requesting [email protected] debug1: Entering interactive session. Write failed: Broken pipe Connection closed Verbose mode gives nothing to help. Anyone have an idea of what I've done wrong? If I try to login with ssh or sftp with my personnal user, everything works fine.

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• Can't install MailParse on cpanel server

  - by Tom

  Hi, I've got a linux vps running CentOs 5.5 (cpanel/whm), I've installed MailParse via Module Installers section on whm, and it did install it, the end of setup log: running: make INSTALL_ROOT="/root/tmp/pear-build-root/install-mailparse-2.1.5" install Installing shared extensions: /root/tmp/pear-build-root/install-mailparse-2.1.5/usr/lib/php/extensions/no-debug-non-zts-20090626/ running: find "/root/tmp/pear-build-root/install-mailparse-2.1.5" | xargs ls -dils 508718 4 drwxr-xr-x 3 root root 4096 Feb 6 21:08 /root/tmp/pear-build-root/install-mailparse-2.1.5 508745 4 drwxr-xr-x 3 root root 4096 Feb 6 21:08 /root/tmp/pear-build-root/install-mailparse-2.1.5/usr 508746 4 drwxr-xr-x 3 root root 4096 Feb 6 21:08 /root/tmp/pear-build-root/install-mailparse-2.1.5/usr/lib 508747 4 drwxr-xr-x 3 root root 4096 Feb 6 21:08 /root/tmp/pear-build-root/install-mailparse-2.1.5/usr/lib/php 508748 4 drwxr-xr-x 3 root root 4096 Feb 6 21:08 /root/tmp/pear-build-root/install-mailparse-2.1.5/usr/lib/php/extensions 508749 4 drwxr-xr-x 2 root root 4096 Feb 6 21:08 /root/tmp/pear-build-root/install-mailparse-2.1.5/usr/lib/php/extensions/no-debug-non-zts-20090626 508744 196 -rwxr-xr-x 1 root root 193502 Feb 6 21:08 /root/tmp/pear-build-root/install-mailparse-2.1.5/usr/lib/php/extensions/no-debug-non-zts-20090626/mailparse.so Build process completed successfully Installing '/usr/lib/php/extensions/no-debug-non-zts-20090626/mailparse.so' install ok: channel://pecl.php.net/mailparse-2.1.5 Extension mailparse enabled in php.ini The mailparse.so object is not in /usr/local/lib/php/extensions/no-debug-non-zts-20090626 Now, when i try to use mailparse functions using php i get the following error: PHP Warning: PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20090626/mailparse.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20090626/mailparse.so: cannot open shared object file: No such file or directory in Unknown on line 0 What should i do?

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• Alternative software for Pinnacle PCTV 100e

  - by Stijn Sanders

  I have a Pinnacle PCTV 100e external USB cable television receiver. I've been using Pinnacle's software that came with the card (TVCenter Pro) to record things at given times. Things I don't like is an extremely high CPU load, and that it doesn't seem to halt the screensaver from running when watching in full screen. Also, I was away the last two weeks, and the schedules went terribly bust. Some items were recorded hours before or after the actual scheduled time (and now I missed some shows), and some recurring schedules weren't converted into the next occurrence correctly! Is there good alternative software that would work with my PCTV 100e? (Preferalby cheap or free) I've tried VLC Player, which gets video, but no audio. I've tried MediaPortal, which crashes when trying to scan for channels. When I select a channel manually, the stored mpg has big errors in encoding and is also missing audio. There's VirtualDub, but that doesn't have ready-made scheduled-recording options. This I can conjure some scheduled scripts for, but I've noticed the sync gets awfully wrong after some time. I've tried Windows Media Center, but it doesn't seem to support the PCTV 100e.

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• GA 8KNXP Rev1.0: 4 GB installed, only 3.5 GB recognized by BIOS

  - by hurikhan77

  I've installed 2x 1 GB and 4x 512 MB memory into my GA-8KNXP system which would sum up to 4 GB. The specification from the manual says: Maximum memory support: 4 GB. If all six slots are utilized, slot 5+6 may only equipped with single-sided RAM modules. And so I did. Anyway: The BIOS counts up to 3.5 GB and finishes there. Also my Linux system reports only 3.5 GB of memory although 4 GB memory support is activated in the kernel. So I suppose this is a memory mapping issue or a hardware issue. I've tried removing only on of the 512 MB memory modules leaving 5 modules in place. But that just stopped the system from powering on correctly (screen stays black although fans and leds come to live). Dual Channel was detected and enabled so the system technically found all 6 modules. "dmidecode" in Linux reports only memory in slots 1 to 4 and ignores slots 5+6, so it only detects 3 GB of memory. It also says the system would support up to 16 GB of memory with 4 GB modules per slot. I think technically the chipset should be able to offer and utilize the complete 4 GB memory range. Any clues what else I could check? Or do I have just to live with 0.5 GB wasted memory?

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• Error - "IR Hardware not detected" - but it's installed/working

  - by Robert

  I am trying to do: Settings-TV-Set up TV signal. During this process I am getting the error "IR Hardware not detected." With the remote, I can select the "try again" button (to re-detect) and it tries again, so the remote works. Plugging in the "IR blaster" doesn't change anything. (I wouldn't expect any difference, but I read a post which said you needed that. I will get Media Center to change channels if I can get that working - but first things first.) I was able to do the setup months ago when I had cable. and everything was fine. I just got DirecTV. (BTW - During the above process, Media Center detects the signal coming in on channel 3. Windows XP Media Center SP3. The TV Tuner card is a Pinnacle TCTV HD PCI. Everything - and I mean everything - has the latest firmware and drivers - as of 4 months ago when I fixed a different problem. So I DON"T WANT TO HEAR the standard answer to check drivers/firmware. THANK YOU.) Thanks for any help.

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• Any Recommendations for a Web Based Large File Transfer System?

  - by Glen Richards

  I'm looking for a server software product that: Allows my users to share large files with: The general public securely to 1 or more people (notification via email, optionally with a token that gives them x period of time to download) Allows anyone in the general public to share files with my users. Perhaps by invitation. Has to be user friendly enough to allow my users to use this with out having to bug me as the admin. It needs to be a system that we can install on our own server (we don't want shared data sitting on anyone else's server) A web based solution. Using some kind or secure comms channel would be good too, eg, ssh Files to share could be over 1 GB. I found the question below. WebDav does not sound user friendly enough: http://serverfault.com/questions/86878/recommendations-for-a-secure-and-simple-dropbox-system I've done a lot of searching, but I can't get the search terms right. There are too many services that provide this, but I want something we can install on our own server. A last resort would be to roll my own. Any ideas appreciated. Glen EDIT Sorry Tom and Jeff but Glen specifically says that he's looking for a 'product' so given that I specialise in this field thought that my expertise in this area may have been of use to him. I don't see how him writing services is going to be easy for him to maintain going forward (large IT admin overhead) or simple for his users and the general public to work with.

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• Application Does Not Start in Windows 7

  - by Jim Fell

  I recently installed a new 60GB SSD as my primary hard drive and re-installed Windows 7 Professional 64-bit. I then installed SSD Fresh from Abelssoft to optimize Windows to run on the SSD. It seemed to install okay, but when I try to run the utility, its splash screen appears briefly before it quietly closes. No errors are displayed; the utility just fails to launch. I have run SSD Fresh on another SSD-equipped Windows 7 Pro x64 computer in the past without any problems. Does anyone know what might be preventing the program from running? I tried running sfc /scannow from the command line (with administrator privileges), shutting down the Spybot Resident, and disabling the firewall and virus scanner. I also tried running the tool as administrator; I even tried reinstalling it, running the installer as administrator. No luck. Every time I try to launch the program the Event Viewer logs this same set of errors: Error 4/2/2012 11:35:44 PM Application Error 1000 (100) Faulting application name: SSDFresh.exe, version: 1.0.0.0, time stamp: 0x4f2a45d8 Faulting module name: unknown, version: 0.0.0.0, time stamp: 0x00000000 Exception code: 0xc0000005 Fault offset: 0x000007ff0016dbba Faulting process id: 0x994 Faulting application start time: 0x01cd11fd9fe978df Faulting application path: C:\Program Files (x86)\SSD Fresh\SSDFresh.exe Faulting module path: unknown Report Id: dfeed551-7df0-11e1-a2c7-002522c47ec0 Error 4/2/2012 11:35:43 PM .NET Runtime 1026 None Application: SSDFresh.exe Framework Version: v4.0.30319 Description: The process was terminated due to an unhandled exception. Exception Info: System.NullReferenceException Stack: at AbBugReporter.BugForm.InitLanguage() at AbBugReporter.BugForm..ctor(AbFlexTrans.LanguageInfo, AbBugReporter.BugReportManager, Boolean) at AbBugReporter.BugReportManager.Show(System.Exception) at SSDFresh.App.App_DispatcherUnhandledException(System.Object, System.Windows.Threading.DispatcherUnhandledExceptionEventArgs) at System.Windows.Threading.Dispatcher.CatchException(System.Exception) at MS.Internal.Threading.ExceptionFilterHelper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate) at System.Windows.Threading.Dispatcher.WrappedInvoke(System.Delegate, System.Object, Int32, System.Delegate) at System.Windows.Threading.Dispatcher.InvokeImpl(System.Windows.Threading.DispatcherPriority, System.TimeSpan, System.Delegate, System.Object, Int32) at MS.Win32.HwndSubclass.SubclassWndProc(IntPtr, Int32, IntPtr, IntPtr) at MS.Win32.UnsafeNativeMethods.DispatchMessage(System.Windows.Interop.MSG ByRef) at System.Windows.Threading.Dispatcher.PushFrameImpl(System.Windows.Threading.DispatcherFrame) at System.Windows.Application.RunInternal(System.Windows.Window) at System.Windows.Application.Run() at SSDFresh.App.Main() Error 4/2/2012 11:35:39 PM SideBySide 59 None Activation context generation failed for "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe".Error in manifest or policy file "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe.Config" on line 0. Invalid Xml syntax. Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None Error 4/2/2012 11:35:39 PM SideBySide 59 None For those who are interested, here is my system configuration: ASRock M3A770DE AM3 AMD 770 ATX AMD Motherboard AMD Athlon II X3 455 Rana 3.3GHz Socket AM3 95W Triple-Core Desktop Processor ADX455WFGMBOX G.SKILL Value Series 8GB (2 x 4GB) 240-Pin DDR3 SDRAM DDR3 1333 (PC3 10600) Desktop Memory Model F3-10600CL9D-8GBNT Mushkin Enhanced Chronos Deluxe MKNSSDCR60GB-DX 2.5" 60GB SATA III Synchronous MLC Internal Solid State Drive (SSD) (Primary/Boot HD) Western Digital Caviar Blue RFHWD1600AAJS 160GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive -Bare Drive (Secondary HD) Sony Optiarc CD/DVD Burner Black SATA Model AD-7261S-0B LightScribe Support RAIDMAX RX-850AE 850W ATX12V v2.3 / EPS12V SLI Certified CrossFire Ready 80 PLUS GOLD Certified Modular Active PFC Power Supply ASUS HD7850-DC2-2GD5 Radeon HD 7850 2GB 256-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card Asus ML228H 21.5" Full HD LED BackLight LED Monitor Slim Design (x3)

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• pppd disconnects from 3G, doesn't reconnect, w/ persist set

  - by bytenik

  I am trying to configure pppd to connect to a 3G network (Sprint, in this case) and then stay connected, reconnecting automatically if the remote connection is terminated. I have enabled the persist option. My configuration file is as follows: hide-password noauth connect "/usr/sbin/chat -v -f /etc/chatscripts/cellular" debug /dev/cell 921600 defaultroute noipdefault user " " persist maxfail 0 lcp-echo-failure 10 lcp-echo-interval 60 holdoff 5 However, when the peer disconnects the connection, pppd often waits a long time (substantially more than my holdoff) to reconnect the modem -- if it ever reconnects at all! An example log showing this: May 23 05:17:24 00270e0a8888 pppd[2408]: rcvd [LCP TermReq id=0x26] May 23 05:17:24 00270e0a8888 pppd[2408]: LCP terminated by peer May 23 05:17:24 00270e0a8888 pppd[2408]: Connect time 60.1 minutes. May 23 05:17:24 00270e0a8888 pppd[2408]: Sent 0 bytes, received 0 bytes. May 23 05:17:24 00270e0a8888 pppd[2408]: Script /etc/ppp/ip-down started (pid 2456) May 23 05:17:24 00270e0a8888 pppd[2408]: sent [LCP TermAck id=0x26] May 23 05:17:24 00270e0a8888 pppd[2408]: Script /etc/ppp/ip-down finished (pid 2456), status = 0x0 May 23 05:17:24 00270e0a8888 pppd[2408]: Hangup (SIGHUP) May 23 05:17:24 00270e0a8888 pppd[2408]: Modem hangup May 23 05:17:24 00270e0a8888 pppd[2408]: Connection terminated. May 23 05:17:24 00270e0a8888 pppd[2408]: Terminating on signal 15 May 23 05:17:24 00270e0a8888 pppd[2408]: Exit. May 23 06:08:07 00270e0a8888 pppd[2500]: pppd 2.4.5 started by root, uid 0 May 23 06:08:10 00270e0a8888 pppd[2500]: Script /usr/sbin/chat -v -f /etc/chatscripts/cellular finished (pid 2530), status = 0x0 May 23 06:08:10 00270e0a8888 pppd[2500]: Serial connection established. May 23 06:08:10 00270e0a8888 pppd[2500]: using channel 11 The disconnect at the request of the peer occurs at 5:17, but the reconnect didn't happen until 6:08. I had a friend monitoring the server so I'm not certain that this wasn't a manual reconnection. Either way, it either took almost an hour to reconnect or never reconnected. Shouldn't persist + holdoff 5 cause this to automatically reconnect after 5 seconds of the link terminating?

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• Home network with two isolated separate subnets, running on cablemodem/router and WRT-router.

  - by Johan Allgoth

  I have a new connection with a nice new router/cable-modem. I'd like to setup it up optimally and needs some pointers. I am a complete n00b when it comes to routing. I want to end up with two separate subnets, 10.1.2.0/24 and 192.168.1.0/24 each available on their own wireless channel/SSID. Both firewalled. I want my wired computers on the gigabit switch, optimally with public ips. I want to be able to reach 192.168.1.0/24 from 10.1.2.0/24, but not vice versa. Everyone should have internet access. Hardware and capabilities: Netgear CG3100. Handles cable connection. Gigabit switch. 802.11n. Can do DHCP, firewall, NAT etc. Can choose subnet. Can turn of NAT and if so hand out up to 4 public ips. Somewhat challenged when it comes to configuration. WRT-router. Runs DD/Open-WRT very stable. 100 Mbit switch. 802.11.g Can do DHCP, firewall, NAT etc. Can choose subnet. Highly configurable. I hope to be able to keep 10.1.2.0/24 on the CG3100, for speed reasons and 192.168.0.0/24 on the WRT-router for quota and user control reasons. On my 10.1.2.0/24 network I plan on running servers for various services. Should I turn of NAT on the WRT-router? Or on the cable modem? Activate what in that case? Is double NAT always f-ed up?

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• SSH client not showing prompt after successful login

  - by user431949

  I'm having problems with my SSH client on Ubuntu 10.10. When I switch on my computer and open a Terminal and execute the command ssh user@host, it gives me a password prompt after which I enter the right password, I then get a prompt to execute my commands on the remote computer. Now the problem is, after a little while (probably around 10 minutes), the terminal window stops accepting commands (No matter what I type, nothing shows). Once this happens, I close the Terminal window and try to start all over again by opening another Terminal window. But this time around, after entering the right password, I don't get a welcome message or prompt. The cursor just keeps blinking on a new line. I ran the ssh command with -v parameter and the message I get after a successful login is: debug1: Authentication succeeded (password). debug1: channel 0: new [client-session] debug1: Entering interactive session. debug1: Sending environment. debug1: Sending env LANG = en_GB.utf8 Still the cursor keeps blinking on a new line without a prompt. However, Putty SSH client works perfectly on the same machine. Thank you very much for your time. Your help would be greating appreciated.

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• How to use WPA2 client mode in the Linux-based Cisco WAP4410N access point

  - by joechip

  I have a Cisco WAP4410N access point that I want to use as a client to connect to a WPA2 wireless network (for WLAN service monitoring purposes). Supposedly this access point supports a "Wireless Client/Repeater" mode that allows to do this. The Repeater function is optional (I have that box unchecked so that nobody can connect to this access point wirelessly). I have verified through SSH that the access point gets configured as a client and not as a Master. But it never associates to the SSID I ask it to. This is what iwconfig shows: ath04 IEEE 802.11ng ESSID:"myownssid" Mode:Managed Channel:0 Access Point: Not-Associated Bit Rate:0 kb/s Tx-Power:14 dBm Sensitivity=1/3 Retry:off RTS thr:off Fragment thr:off Encryption key:off Power Management:off Link Quality=0/94 Signal level=161/162 Noise level=161/161 Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:0 Missed beacon:0 Although I've never done this from the command line, I suppose I could use wpa_supplicant or wpa_client to associate it, but I don't know how to do that without editing configuration files and the filesystem is readonly. Besides, I would have to run those commands manually after every reboot. I'd like to know how to do this the Cisco way, if possible. If not, any trick to make this work would be useful. Edit: This is with the latest firmware, 2.0.4.2. And I found that not all of the filesystem is readonly, since /var and /tmp are mounted with type ramfs.

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• Are These Parts compatible?

  - by ell

  I have never assembled a PC before, although I have taken an old one apart and replaced a few parts in others here and there so I have (very) limited experience. I have been looking to make a pc and here are the parts I might buy: Foxconn P45AL Intel P45 (Socket 775) DDR2 Motherboard (with onboard sound I believe) Gigabyte GeForce GTX 460 OC 768MB GDDR5 PCI-Express Graphics Card Already have 2 1gb sticks of dual channel DDR2 memory Intel Core 2 Quad Q8400 LGA775 'Yorkfield' 2.66GHz 4MB-cache Processor Samsung SpinPoint F3 1TB SATA-II 32MB Cache Hard Drive Antec Dark Fleet Series DF10 Gaming Enclosure – Black I already have monitor, mouse, keyboard and DVD/CD drive Akasa Freedom Power 1000W Modular Power Supply I have never done this before so feel free to laugh at me for getting something obvious wrong, forgetting a vital component etc. but is all of this compatible? And have I gone overkill on the PSU, if so, please recommend one. Thanks in advance, ell. EDIT: Added PSU which I forgot to mention EDIT: I would be using this to surf the internet, write e-mails, chat, word process, play games such as team fortress 2 & spring rts (at highest graphics hopefully), some 3d modelling in blender, some opengl programming, and image editing in GIMP.

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• GA 8KNXP Rev1.0: 4GB installed, only 3.5 recognized by BIOS

  - by hurikhan77

  I've installed 2x 1 GB and 4x 512 MB memory into my GA-8KNXP system which would sum up to 4GB. The specs from the manual say: Maximum memory support: 4GB. If all six slots are utilized, slot 5+6 may only equipped with single-sided RAM modules. And so I did. Anyway: The BIOS counts up to 3.5 GB and finishes there. Also my linux system reports only 3.5 GB of memory although 4 GB memory support is activated in the kernel. So I suppose this is a memory mapping issue or a hardware issue. I've tried removing only on of the 512 MB memory modules leaving 5 modules in place. But that just stopped the system from powering on correctly (screen stays black although fans and leds come to live). Dual Channel was detected and enabled so the system technically found all 6 modules. "dmidecode" in linux reports only memory in slots 1 to 4 and ignores slots 5+6, so it only detects 3 GB of memory. It also says the system would support up to 16 GB of memory with 4 GB modules per slot. I think technically the chipset should be able to offer and utilize the complete 4 GB memory range. Any clues what else I could check? Or do I have just to live with 0.5 GB wasted memory?

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• Intermittent lockups, unable to diagnose in over a year

  - by Magsol

  Here's a real doosie; I may just give my firstborn child to whomever helps me solve this problem. In July 2008, I assembled what would be my desktop computer for graduate school. Here are the specs of the machine I built: Thermaltake 750W PSU Corsair Dominator 2x2GB 240-pin SDRAM Thermaltake Tower Asus P5K Deluxe Motherboard Intel Core 2 Quad Q9300 2.5GHz CPU 2 x GeForce 8600 GT WD Caviar Blue 640GB hard drive CD burner DVD burner Soon thereafter, I ordered a new motherboard (because I was an idiot; that first motherboard supported CrossFire, not SLI), an Asus P5N-D. I was originally running Windows XP SP3. Pretty much right into the start of the fall semester, my desktop would simply lock up after awhile. If my system was largely idling, it would be after 1-3 days. If was gaming, it often happened an hour or two into my gaming session, indicating a link to activity level. Here's where it started getting interesting. I started looking at the system temps. The CPU was warmer than it should have been (~60s C), so I purchased some more efficient cooling compound a way better cooler for it. Now it hardly goes over 40 C. Intel was even kind enough to swap it out for free, just to rule it out. Lockups continued. The graphics cards were also running pretty warm: about 60 C idling. Removing one of them seemed to improve stability a little bit...as in, it wouldn't lock up quite as frequently, but still always eventually locked up. But it didn't matter which card I used or removed, the lockups continued. I reverted back to the original motherboard, the P5K Deluxe. Lockups continued. I purchased an entirely new motherboard, eVGA's nForce 750i. Lockups continued. Ran memtest86+ over and over and over, with no errors. Even RMA'd the memory. Lockups continued. Replaced the PSU with a Corsair 750W PSU. Lockups continued. Tried disconnecting all IDE drives (HDDs are SATA). Lockups continued. Replaced both graphics cards with a single Radeon HD 4980. Average temps are now always around 50 C when idling, 60 C only when gaming. Lockups continued. Throughout the whole ordeal, the system has been upgraded from Windows XP SP3 to Vista 32-bit, to Vista 64-bit, and is now at Windows 7 64-bit. Lockups have occurred at every step along the way (each OS was in place for at least a few months before the next upgrade). Edit: By "upgrade" I mean clean install each time. In addition to those reformats, I have performed many, many other reformats of the system and a reinstall of whatever OS had been previously installed in an attempt to rectify this problem, to no avail./Edit When the system locks up, there's no blue screen, no reboot, no error message of any kind. It simply freezes in place until I hit the reset button. Very, very rarely, once Windows boots back up, the system informs me that Windows has recovered from an error, but it can never find the source aside from some piece of hardware. I've swapped out every component in this computer, and there are more fans in it than I care to count...though for the sake of completeness: top 80mm case fan (out) rear 80mm case fan (out) rear 120mm case fan (out) front 120mm case fan (in) side 250mm case fan (in) giant CPU fan on-board motherboard fan (the eVGA board) triple-fan memory setup (came with the memory) PSU internal fan another 120mm fan I stuck on the underside of the video card to keep hot air from collecting at the bottom of the case I'm truly out of ideas. ANY help at all would be oh-so-very GREATLY appreciated. Thank you!

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• Decyphering Seagate drive model numbers?

  - by Stefan Lasiewski

  I'm comparing Seagate's Enterprise and Desktop drives for a variety of old and new servers. These servers come from different generations, so options like size (73GB, 2TB) and interface (SATA vs SAS 3.0Gbps vs SAS 6Gbps vs SCSI Ultra320) are widely variable. I'm trying to compare the sizes, speeds and interfaces, but I'm getting thrown off by different models. Also, their website is not the best. Does anyone know of a documented explanation of the Seagate model numbers? And is there a single spreadsheet which compares the features for all drives (or all 'Enterprise' drives?). Seagate drives have model numbers like this: Model ST3600057SS 6-Gb/s SAS 600 GB None at Cheetah® 15K Hard Drives Model ST373455LW Ultra320 SCSI 73.4 GB 68-Pin LW at Cheetah® 15K Hard Drives Model ST32000644NS SATA 3Gb/s 2 TB None at Constellation™ ES Hard Drives Model ST973452SS 6-Gb/s SAS 73 GB None Savvio® 15K Hard Drives Model ST9200011FS SATA 3Gb/s 200 GB Pulsar™ Solid State Drives I understand the model numbers read something like this: ST - SOMETHING1 - SIZE - SOMETHING2 - INTERFACE Where the fields mean something like this: ST : For 'Seagate'? 'Seagate Technoligies'? SOMETHING1 - This field has number, but I'm not sure what that represents. SIZE - Size in Gigabytes. This is a number like '73' or '300' or '2000' SOMETHING2 - This field also has a number, but I'm not sure what it means. INTERFACE - This field seems to indicate the Interface. 'SS' means SAS, 'FC' means Fibre Channel, but I don't see how to distinguish between 6Gbps SAS and 3Gbps SAS, or different SATA or FC speeds. I don't see a field which indicates the RPM (15K , 10K, 7.2K) etc. Is this part of the model number?

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• Connecting jconsole using SOCKS to Amazon EC2

  - by freshfunk

  I'm trying to use jconsole to view stats on an EC2 instance by using a socks proxy created by SSH. I've tried the various scripts mentioned in the links below but to no avail: http://simplygenius.com/2010/08/jconsole-via-socks-ssh-tunnel.html http://gabrielcain.com/blog/2010/11/02/using-ssh-proxying-to-connect-jconsole-to-remote-cassandra-instances/ I'm running ssh -f -ND 8123 myuser@mymachine and verified that at least Firefox goes through it as a proxy. I then run jconsole -J-DsocksProxyHost=localhost -J-DsocksProxyPort=8123 service:jmx:rmi:///jndi/rmi://ec2-XX-XX-XXX-XXX.compute-1.amazonaws.com:8080/jmxrmi I run netstat -n on my EC2 instance and I see a connection created by my machine. However, the connection eventually disappears and I get a 'channel 2: open failed: connect failed: Operation timed out' from my ssh tunnel. I've opened the jmx port through the security group and I've checked the port on the EC2 instance to make sure it's open (by telnet-ing to it). I'm not sure where to look next. Are there some properties in sshd_config or ssh_config I need to enable for tunneling? Or anything in Mac OS X? I feel like a serious noob but sys administration is really not my strong point. I've spent several hours and can't get this to work.

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• Connection refused in ssh tunnel to apache forward proxy setup

  - by arkascha

  I am trying to setup a private forward proxy in a small server. I mean to use it during a conference to tunnel my internet access through an ssh tunnel to the proxy server. So I created a virtual host inside apache-2.2 running the proxy, the proxy_http and the proxy_connect module. I use this configuration: <VirtualHost localhost:8080> ServerAdmin xxxxxxxxxxxxxxxxxxxx ServerName yyyyyyyyyyyyyyyyyyyy ErrorLog /var/log/apache2/proxy-error_log CustomLog /var/log/apache2/proxy-access_log combined <IfModule mod_proxy.c> ProxyRequests On <Proxy *> # deny access to all IP addresses except localhost Order deny,allow Deny from all Allow from 127.0.0.1 </Proxy> # The following is my preference. Your mileage may vary. ProxyVia Block ## allow SSL proxy AllowCONNECT 443 </IfModule> </VirtualHost> After restarting apache I create a tunnel from client to server: #> ssh -L8080:localhost:8080 <server address> and try to access the internet through that tunnel: #> links -http-proxy localhost:8080 http://www.linux.org I would expect to see the requested page. Instead a get a "connection refused" error. In the shell holding open the ssh tunnel I get this: channel 3: open failed: connect failed: Connection refused Anyone got an idea why this connection is refused ?

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• Why Is Volume Shadow Copy Services stopping?

  - by David Mackintosh

  I am running Windows 7 Professional, 64-bit. I am running a backup-over-the-internet software client which depends on the Volume Shadow Copy Services running. Since I installed Service Pack 1 (or rather, didn't object when Windows Update forced Service Pack 1 on me) the backup service is failing to back everything up because VSC isn't running. Most of the time it fails to back up such noise as the Security Essentials database or the Messenger Live contact list -- stuff I really don't care about -- but I don't want to fall into the trap of accepting an Error-state backup as "normal". At the recommendation of the backup software, I have set the VSC service startup mode to be Automatic. When I look in the Event Log, System channel I can see at boot time: The Volume Shadow Copy service entered the running state. ...and then two or three minutes later: The Volume Shadow Copy service entered the stopped state. How do I figure out why VSC is stopping? At the suggestion of the backup vendor, I have already followed the suggestions from http://support.microsoft.com/default.aspx/kb/940184 net stop SENS net stop EventSystem net start EventSystem net start SENS net stop COMSysApp net stop SwPrv net stop VSS cd /d C:\Windows\system32 regsvr32 ole32.dll /s regsvr32 oleaut32.dll /s regsvr32 vss_ps.dll /s vssvc /register /s regsvr32 /i swprv.dll /s regsvr32 /i eventcls.dll /s regsvr32 es.dll /s regsvr32 stdprov.dll /s regsvr32 vssui.dll /s regsvr32 msxml.dll /s regsvr32 msxml3.dll /s regsvr32 msxml4.dll /s net start SwPrv net start VSS net start ProtectedStorage ...and per http://support.microsoft.com/kb/940184 I have deleted the key tree HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\EventSystem\{26c409cc-ae86-11d1-b616-00805fc79216}\Subscriptions I have also run chkdsk /F and chkdsk /R on both permanent hard disks. (I had a similar problem with another computer (same OS, same failure, same start point after SP1 install) but the problem went away when I forced Volume Shadow Copy Services to Automatic startup rather than Manual. I did not have to resort to following the Microsoft KB instructions.)

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• VMWare Raw Device Mapping Not Working

  - by George H. Lenzer

  While I'm waiting for VMWare support to get back to me, I thought I'd ask here. I have a 400 gig LUN presented from a fiber channel SAN to my VMWare host. It's legacy from another virtualization platform and I need to keep it as is to avoid a long period of downtime. I formatted my VMFS3 datastore with 4 meg blocks to allow up to 1 TB disks. Then I tried adding my 400 gig disk as a raw device in physical compatibility mode. I get the error: "File is larger than the maximum size supported by datastore 'Base Test'. [Base Test]VMTEST01/VMTEST01_2.vmdk Originally I had the VMFS datastore formatted with 1 meg blocks which was the cause of this problem since the largest disk allowed would be 256 gigs. But I deleted the data store and then reformatted with 4 megs blocks. I've also tried using virtual compatibility mode for the raw device but it still fails. Does anyone have any suggestions? I've been waiting for a little over a week for VMWare, but that's fine because I'm not yet a paying customer. I'm still in the eval phase.

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• SBD killing both cluster nodes when there are even small SAN network problems

  - by Wieslaw Herr

  I am having problems with stonith SBD in a openais-based cluster. Some background: The active/passive cluster has two nodes, node1 and node2. They are configured to provide an NFS service to users. To avoid problems with split-brain, they are both configured to use SBD. SBD is using two 1MB disks available to the hosts via an multipath fibre-channel network. The problems start if something happens with the SAN network. For example, today one of the brocade switches got rebooted and both nodes lost 2 out of 4 paths to each disks, which resulted in both nodes committing suicide and rebooting. This, of course, was highly undesirable because a) there were paths left b) even if the switch would be out for 10-20 seconds a reboot cycle of both nodes would take 5-10 minutes and all NFS-locks would be lost. I tried increasing the SBD timeout values (to 10sec+ values, dump attached at the end), however a "WARN: Latency: No liveness for 4 s exceeds threshold of 3 s" hints that something isn't working as I would it expect to. Here is what I would like to know: a) Is SBD working as it should killing nodes when 2 paths are available? b) If not, is the multipath.conf file attached correct? The storage controller we use is an IBM SVC (IBM 2145), should there be any specific configuration for it? (as in multipath.conf.defaults) c) How should I go about increasing the timeouts in SBD attachements: Multipath.conf and sbd dump (http://hpaste.org/69537)

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• Multi-WAN bonding across different media

  - by Tom O'Connor

  I've recently been thinking again about a product that Viprinet provide, basically they've got a pair of routers, one that lives in a datacentre, Their VPN Multichannel Hub and the on-site hardware, their VPN multichannel routers They've also got a bunch of interface cards (like HWICs) for 3G, UMTS, Ethernet, ADSL and ISDN adapters. Their main spiel seems to be bonding across different media. It's something that I'd really like to use for a couple of projects, but their pricing is really quite extreme, the hub is about 1-2k, the routers are 2-6k, and the interface modules are 200-600 each. So, what I'd like to know is, is it possible with a couple of stock Cisco routers, 28xx or 18xx series, to do something similar, and basically connect a bunch of different WAN ports, but have it all presented neatly as one channel back to the internet, with seamless (or nearly) failover if one of the WAN interfaces should fail. Basically, If i got 3x 3G to ethernet modems, and each on a different network, I'd like to be able to loadbalance/bond across all of them, without having to pay Viprinet for the privilege. Does anyone know how I'd go about configuring something for myself, based around standard protocols (or vendor specific ones), but without actually having to buy the Viprinet hardware?

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• Controller Error: Do I need to worry?

  - by Kryten

  I have a HP Pavillion dv5224ea Laptop with Windows 7 on it. Recently I discovered a Error in Event Viewer: The driver detected a controller error on \Device\Ide\IdePort1. (more details): - System - Provider [ Name] atapi - EventID 11 [ Qualifiers] 49156 Level 2 Task 0 Keywords 0x80000000000000 - TimeCreated [ SystemTime] 2010-03-07T12:43:07.090197600Z EventRecordID 30198 Channel System Computer Alistair-Win7 Security - EventData \Device\Ide\IdePort1 0000100001000000000000000B0004C002000000850100C00000000000000000000000000000000000000000000000000000000004100000 -------------------------------------------------------------------------------- Binary data: In Words 0000: 00100000 00000001 00000000 C004000B 0008: 00000002 C0000185 00000000 00000000 0010: 00000000 00000000 00000000 00000000 0018: 00000000 00001004 In Bytes 0000: 00 00 10 00 01 00 00 00 ........ 0008: 00 00 00 00 0B 00 04 C0 .......À 0010: 02 00 00 00 85 01 00 C0 ......À 0018: 00 00 00 00 00 00 00 00 ........ 0020: 00 00 00 00 00 00 00 00 ........ 0028: 00 00 00 00 00 00 00 00 ........ 0030: 00 00 00 00 04 10 00 00 ........ Event Viewer is recording A LOT of these errors (sometimes 13, one after the other!). Do I need to worry? What does this error mean? What device could "\Device\Ide\IdePort1" be? What is a ATAPI Error? Do I need to re-install Windows? I generally find the occurs when I try to backup my machine (using Windows Backup) or when using a program that uses Volume Shadow Copy. I have run "sfc", no problems. There are no Device Errors in Device Manager. I have also run "vssadmin list writers", no problems. Whats going on??? Would it be a good idea to re-install Windows 7?

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• Computer does not boot after ram upgrade

  - by Calmarius

  I have a Dell Optiplex GX520 desktop (it's abount 5 yr old) PC with 512 MB DDR2 RAM. Since my computer always swapping I thought I should upgrade my RAM. I bought a Kingmax 2GB DDR2 RAM. But my system does not boot. The status leds are on 2 and 4. The user manual says 'video card failure' wtf? I put back the original module and everything works. I tried many combinations. When I leave the old 512 RAM in and put the 2GB next to it to the other socket my system completes the POST and I'm able to enter the BIOS menu. It says my system has 2.5 GB installed, one 0.5GB and one 2GB in dual asymmetric channel mode. It's seemingly right. Exiting the BIOS setup GRUB loads successfully, but when I try to boot Ubuntu it crashes with kernel panic immediately. Trying to load Windows XP does not get past the loading screen, it crashes with 0x8E stop error. Does this mean the ram I bought is faulty? Or is it just mean that the memory module I bought is too new to be handled my computer? I this case I may exchange the RAM with my friends. No other computer is in my house (my very old box has DDR1 ram, my systers new box has DDR3 ones. I can't plug my memory in neither one.) I'm going to return the RAM to store to replace it with a better one tomorrow. Is there any hope to get this new module work?

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• Which upgrade path for disk IO bound postgres server?

  - by user41679

  Hi all, We currently have a Sun x4270 with 2xquad core Xeon Nehalmen 2.93ghz cores (16 threads), 72 gig of ram and 16 x 10k SAS disks split between the os raid 1, a partition for the Write Ahead Logs which is raid 10 and a partition for the database tables and indexes which is also raid 10, all xfs. I'm currently evaluating which path to go down in terms of upgrades. We'll be sharding the DB at some point soon, but for now I need to focus on hardware upgrades specifically. The machine is not CPU or memory bound at all at the moment, just IOWait is become an issue. The machine is mostly write access as we have a heavy caching layer. We're seeing about 300 write IOPS average on both the database partitions. We don't have any additional storage infrastructure like a Fiber Channel or ISCSI network. Budget isn't too much of a concern, something inline with the size of this server (i.e no $1m IBM machines) Space is ok on the DB side of things, we're running out obviously but there's also some reduction we can do. Additional space would be good though. My current thoughts are either: * ISCSI SAN, possible with 10Gbit network that has solid state acceleration. * FusionIO card / Sun F20 card (will the FusionIO card work in the Sun box? * DAS shelf (something like this http://www.broadberry.co.uk/das-direct-attached-storage-servers/cyberstore-224s-das) which a combination of 15k sas disks and some Intel X25-E drives for DB indexes etc) what would I need to put in the x4270 to add a DAS shelf? I think it's a SAS HBA card, do I have to use Sun's own card or will any PCI Express card work? Anything else??? what would you guys do from your experience? I appreciate it's a lot of questions, but I haven't expanded a DB machine for a number of years and the landscape has changed dramatically since then! Any advice or feedback would be very much appreciated. Let me know if there's anything else I can clarify. Thanks in advance!

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