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• How to Load Balance 2 Internet Connections on a Windows 7 machine?

  - by Jimmy Chandra

  It's sort of related to this particular question, but that one is on Mac. I am looking for similar solution on Windows 7. I have 2 network connections: (Connection A) Wireless terminal connecting to ISP A (3G / EVDO internet provider) (Connection B) Broadband wired connection connecting to ISP B (Cable internet provider) Both has access to the internet. When I try connecting to a website and checking the networking tab on my Task Manager, I only see the network traffic being routed to only Connection A. Is there a way to make the computer to utilize both network (in a sense using all the bandwidth available from both the Cable ISP and the 3G / EVDO ISP) at the same time? If so, what do I need to do to set this up ... on Windows 7? Here is a bit more info on my network connections (ipconfig /all): PPP adapter Wireless Terminal: IPv4: aa.bb.ccc.ddd(preferred) Subnet mask: 255.255.255.255 Default Gateway: 0.0.0.0 DNS: aa.ee.f.ggg aa.ee.f.hhh Primary Wins: jjj.ii.k.l Secondary Wins: jjj.ii.k.m Ethernet adapter LAN: IPv4: 192.168.1.100 (connected to a router by wired that itself connect to a cable modem) subnet mask: 255.255.255.0 Default gateway: 192.168.1.1 (the wireless router) DHCP: 192.168.1.1 (the wireless router) DNS: xxx.yy.zz.ww rr.sss.t.uuu For my own privacy, I don't believe the actual number matters, the patterns are representative of the ip numbering scheme...

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• What options to use for Accurate bacula backup?

  - by Kiss Stefan

  It's actually 2 question in one. First is a bit more theoretically. So when specifying accurate options how does bacula figure out if a file needs to be backed up ? it's a simple AND ? As in if the options are Accurate = sm5 bacula will not backup the file if ((size = old size) AND (modtime = old modtime) AND (md5 = old md5)) Is that correct ? Do any of the options take precedence ? as in would be a file skipped if modif time is diffreent but it has the same md5sum ? Are there any implied options that you cannot ignore ? Practical case, ( bacula 5.0.1 ) I have to back-up a svn repo, in order to be able to make incremental backups as simple as posible i am hotcopying (client run before) it to another location, that bacula will backup ( then delete it with client run after). Now in the fileset i have Accurate = spnd5 This should tell bacula to take into consideration size , permission bits number of links , decreases in size and md5sum. However , an incremental is also including a full copy of the svn. What am i doing wrong ? it seems that it takes into account creation time even tho i have not specified it.

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• Connecting remotely to an SQL server inside a LAN

  - by vondip

  Hello everyone, I am using SQL server 2008 inside my home lan. I've configured it to accept remote connections and I can now connect to the server from other pcs inside the lan. The problems rises when I try connecting to the server from a computer outside of my home lan. I've disabled my router's firewall and I've configured a virtual server on port 1433 forwarding to the correct lan ip. What's wrong? why is it not working? Thank you very much for your help~! Edit: This is the error I keep getting: A network related or instance specific error occured while establishing connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that the SQL SERVER is configued to allow remote connections. (provider : Sql network interfaces, error: 25- Connection string is not valid) OK these are my router's details: edimax br-6204wg I am not sure how I am supposed to browse google.com. can you be a bit more specific?

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• Installing Windows 7 over PXE, preferably with domain autojoin

  - by Ivan Vucica

  At an educational non-profit, I've inherited a previously set-up Windows domain that, after the first reinstall of the machines, we ended up not using by simply not joining machines back into the domain. Over last summer, before the annual reinstall for shipping machines to the summer school, I toyed with the idea of installing Windows 7 over network, instead of just imaging the machines. It took a bit longer than I expected to figure out the basics; honestly, I expected that Windows would be more friendly for PXE installation out of the box. What I'm interested in is best practices for installing Windows 7 over PXE with domain autojoin. I'd love it if the whole setup could optionally be hosted on a UNIX based system as well. I've had some success by preparing an ISO using Windows Deployment Kit, and loading the ISO into memory. This was needed since I wanted a menu, and I think I couldn't get PXELINUX to chainload into Windows' bootloader. Unfortunately, I couldn't figure out much about customization of the Windows setup in that timeframe nor could I get Samba to work properly; studying the stuff ended up being too lengthy, especially the portion where I edited a disk image on Windows and copied it outside. WDK didn't make things easier by mounting the disk image into RAM, and writing it in its entirety when done with it, making me a very sad boy. I've recently found a different approach, too, that appears to be closer to Microsoft's original idea for netboot deployment and does not involve ISOs. So my question boils down to the following. What exact approach do you use for netbooting Windows 7 setup? How can Windows 7 setup be best customized to be completely unattended, including installation on specific system partition and not destroying the data partition, creation of passworded admin and default user, choice of MAC-address-based hostname, and joining a domain? As much details as possible for everyone's future reference would be appreciated. WDS isn't a bad choice, but if a Linux-based install can be used, that'd be better.

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• How can I get VirtualBox to run at 1366x768?

  - by Joe White

  I'm trying to run Windows 8 in VirtualBox. My laptop's display is exactly 1366x768. Windows 8 disables some of its features if the resolution is less than 1366x768, so I need to run the guest OS fullscreen. The problem is, VirtualBox refuses to run the guest at 1366x768. When VirtualBox is "fullscreen", the guest is only 1360x768 -- six pixels too narrow. So there's a three-pixel black bar at the left and right sides of the display. This user had the same problem, but the accepted answer is "install the Guest Additions", which I've already done; that got me to 1360, but not to 1366. According to the VirtualBox ticket tracker, there used to be a bug where the guest's screen width would be rounded down to the nearest multiple of 8, but they claim to have fixed the bug in version 3.2.12. I'm using version 4.1.18 and seeing the same problem they claim to have fixed, so either they broke it again, they were wrong about ever having fixed it, or my problem is something else entirely. This answer suggested giving the VM 128MB of video memory, and claimed no problems getting 1366x768 afterward. When I created the VM, its display memory was already defaulted to 128 MB. I tried increasing it to 256MB, but with no effect: the guest is still six pixels too narrow. My host OS is Windows 7 64-bit, and I'm running VirtualBox 4.1.18. How can I get VirtualBox to run my guest OS fullscreen at my display's native resolution of 1366x768?

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• No clue for high load average on top

  - by Oz.

  We have several machines on Amazon (ec2) of the type c1.xlarge with 16 cpus, running the Amazon AMI. Details on the machine: 7 GB of memory 20 EC2 Compute Units (8 virtual cores with 2.5 EC2 Compute Units each) 1690 GB of instance storage 64-bit platform I/O Performance: High API name: c1.xlarge One out of the several machines is showing a high load average, since we have run the last yum upgrade a couple of weeks a go. We did not yet update the other machines, and everything looks normal on them. The strange thing is that the top command not showing any hint for the cause of the load. CPUs are 4.8%us, 1.1%sy, 0.0%ni, 94.1%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st(see below). Mem is about 1.5GB free. Any idea what could it be, or where else can we check? Many thanks for the help. # # top # top - 07:57:42 up 4:18, 1 user, load average: 1.36, 1.45, 1.47 Tasks: 131 total, 1 running, 130 sleeping, 0 stopped, 0 zombie Cpu(s): 4.8%us, 1.1%sy, 0.0%ni, 94.1%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st Mem: 7120092k total, 5644920k used, 1475172k free, 532888k buffers Swap: 0k total, 0k used, 0k free, 3463936k cached PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1557 mysql 20 0 1829m 374m 6448 S 14.3 5.4 11:15.09 mysqld 6655 apache 20 0 416m 49m 3744 S 9.3 0.7 0:04.85 httpd 27683 apache 20 0 421m 54m 3708 S 9.0 0.8 0:00.99 httpd 6682 apache 20 0 424m 57m 3788 S 8.3 0.8 0:03.81 httpd 16816 apache 20 0 419m 51m 3760 S 4.3 0.7 0:04.09 httpd 22182 apache 20 0 417m 50m 3756 S 1.7 0.7 0:06.34 httpd 219 root 20 0 0 0 0 S 0.3 0.0 0:00.34 kworker/7:1 699 root 20 0 0 0 0 S 0.3 0.0 0:00.40 kworker/3:1 1 root 20 0 19376 1508 1212 S 0.0 0.0 0:00.29 init 2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd 3 root 20 0 0 0 0 S 0.0 0.0 0:00.71 ksoftirqd/0

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• When connecting to PPTP Centos via Windows 7 VPN, I get error 2147943625

  - by Charlie Dyason

  The remote computer refused the network connection. phrase has been my arch enemy for the past week now I recently "bought" a VPS server, I gave up trying to configure it with OpenVPN, all the issues were making me lose my mind, so I tried the easier way with pptp, but i figure, both are leading to a dead end... I followed this post (many others too but this is the unlucky one), http://blog.secaserver.com/2011/10/install-vpn-pptp-server-centos-6/ and it all goes well with the setup, however, I run into this error when connecting to the VPN in Windows 7 here is a pic of the error: Image So I do not know what I have done wrong... When connecting, Code: Select all netstat -apn | grep -w 1723 before connecting: netstat -apn |grep -w 1723 tcp 0 0 0.0.0.0:1723 0.0.0.0:* LISTEN 1137/pptpd after the error came I tried again: netstat -apn |grep -w 1723 tcp 0 0 0.0.0.0:1723 0.0.0.0:* LISTEN 1137/pptpd tcp 0 0 41.185.26.238:1723 41.13.212.47:49607 TIME_WAIT - iptables: # Generated by iptables-save v1.4.7 on Fri Nov 1 18:14:53 2013 *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [63:8868] -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -i eth0 -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT -A INPUT -i eth0 -p tcp -m tcp --dport 1723 -j ACCEPT -A INPUT -i eth0 -p gre -j ACCEPT -A FORWARD -i ppp+ -o eth0 -j ACCEPT -A FORWARD -i eth0 -o ppp+ -j ACCEPT -A INPUT -j REJECT --reject-with icmp-host-prohibited -A FORWARD -j REJECT --reject-with icmp-host-prohibited COMMIT # Completed on Fri Nov 1 18:14:53 2013 # Generated by iptables-save v1.4.7 on Fri Nov 1 18:14:53 2013 *nat : PREROUTING ACCEPT [96:12732] : POSTROUTING ACCEPT [0:0] : OUTPUT ACCEPT [31:2179] -A POSTROUTING -o eth0 -j MASQUERADE COMMIT # Completed on Fri Nov 1 18:14:53 2013 options.pptpd the only changes was the require-mppe # BSD licensed ppp-2.4.2 upstream with MPPE only, kernel module ppp_mppe.o # {{{ refuse-pap refuse-chap refuse-mschap # Require the peer to authenticate itself using MS-CHAPv2 [Microsoft # Challenge Handshake Authentication Protocol, Version 2] authentication. require-mschap-v2 require-mppe # Require MPPE 128-bit encryption # (note that MPPE requires the use of MSCHAP-V2 during authentication) require-mppe-128 # }}} I check the iptables, everything is normal, all INPUTs, etc are before rejects, username and password I also checked in chap-secrets file, I am really puzzled...

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• Cannot connect to remote mail server for sending emails in ASP.NET

  - by Dave

  I want to migrate a web application from a Windows Server 2003 to a Windows Server 2008 R2. All works fine except sending emails from the application. If I configure the application to use the smtp server on "localhost" it works, but changing it to the "real" host name (e.g. mail.example.org) no mail is sent. The error message says, that the remote server needs a secure connection or smtp authentication. But since it works when using "localhost" instead of the host name I doubt that this is the problem. Also it's unlikely a problem with the mail server, I also tried it with another one. So for me it seems like the firewall is blocking the outgoing connection to the mail server. I tried to open port 25, but it still did not work. Maybe I just did it the wrong way. Update: For clarifying my setup: I have a Windows Server 2008 R2 with hMailServer installed (set up for some of the hosted domains) For the website I'm talking about I need to use an external mail server (totally different hosting provider) Apparently I was a bit off the track. It seems like it works when using connecting to the local mail server either with the host name "localhost" or "mail.somedomain.com" (while somedomain.com is set up in my mail server). But when using the host name of the external mail server ("mail.externaldomain.com") it seems like it tries to connect to the local server again, although this domain is not set up in the mail server. Thanks to Evan Anderson for the tip to use telnet - why I have not thought of it myself?... :-) Note, the website www.externaldomain.com is hosted on my server but the DNS entries are maintained by the other hosting provider. "externaldomain.com" is the only entry which points to my server all other records (MX, subdomains) are pointing to the other server. So I think the question is now, how do i bring my server to connect to the external mailserver. Do I have to configure this in my mail server or is it a windows server thing?

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• Unattended Kickstart Install

  - by Eric

  I've looked around quite a bit and have seen similar setup and questions, but none seem to work for me. I'm using the following command to create a custom ISO: /usr/bin/livecd-creator --config=/usr/share/livecd-tools/test.ks --fslabel=TestAppliance --cache=/var/cache/live This works great and it creates the ISO with all of the packages and configs I want on it. My issue is that I want the install to be unattended. However, every time I start the CD, it asks for all of the info such as keyboard, time zone, root password, etc. These are my basic settings I have in my kickstart script prior to the packages section. cdrom install autopart autostep xconfig --startxonboot rootpw testpassword lang en_US.UTF-8 keyboard us timezone --utc America/New_York auth --useshadow --enablemd5 selinux --disabled services --enabled=iptables,rsyslog,sshd,ntpd,NetworkManager,network --disabled=sendmail,cups,firstboot,ip6tables clearpart --all So after looking around, I was told that I need to modify my isolinux.cfg file to either do "ks=http://X.X.X.X/location/to/test.ks" or "ks=cdrom:/test.ks". I've tried both methods and it still forces me to go through the install process. When I tail the apache logs on the server, I see that the ISO never even tries to get the file. Below are the exact syntax I'm trying on my isolinux.cfg file. label http menu label HTTP kernel vmlinuz0 append initrd=initrd0.img ks=http://192.168.56.101/files/test.ks ksdevice=eth0 label localks menu label LocalKS kernel vmlinuz0 append initrd=initrd0.img ks=cdrom:/test.ks label install0 menu label Install kernel vmlinuz0 append initrd=initrd0.img root=live:CDLABEL=PerimeterAppliance rootfstype=auto ro liveimg liveinst noswap rd_NO_LUKS rd_NO_MD rd_NO_DM menu default EOF_boot_menu The first 2 give me a "dracut: fatal: no or empty root=" error until I give it a root= option and then it just skips the kickstart completely. The last one is my default option that works fine, but just requires a lot of user input. Any help would be greatly appreciated.

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• ps aux as non-root doesn't show all processes

  - by JMW

  hi, i'm using an ubuntu 10.04 server... when i run ps aux as root i see all processes when i run ps aux as nonroot i see JUST the processes of the current user after a bit of research i found the following solution: root@m85:~# ls -al /proc/ total 4 dr-xr-xr-x 122 root root 0 2010-12-23 14:08 . drwxr-xr-x 22 root root 4096 2010-12-23 13:30 .. dr-x------ 6 root root 0 2010-12-23 14:08 1 dr-x------ 6 root root 0 2010-12-23 14:08 10 dr-x------ 6 root root 0 2010-12-23 14:08 1212 dr-x------ 6 root root 0 2010-12-23 14:08 1227 dr-x------ 6 root root 0 2010-12-23 14:08 1242 dr-x------ 6 zabbix zabbix 0 2010-12-24 23:52 12747 [...] my first idea was, that it got mounted in a weird way: /etc/fstab is ok and it doesn't seem to be mounted in an weird way... my second idea was, that there might be a rootkit: but it's not a rootkit... rkhunter tells me, that there is no rootkit installed... i don't know if it is since the machine got installed or came with an update. i've just installed zabbix-agent on the machine and realized, that it didn't work properly... What could have caused such strange permissions (500) and how can i set it back to an normal level (555) ? Crazy, i've never seen something like that... thanks in advance for any help and merry christmas :) see you

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• My linux server "Number of processes created" and "Context switches" are growing incredibly fast

  - by Jorge Fuentes González

  I have a strange behaviour in my server :-/. Is a OpenVZ VPS (I think is OpenVZ, because /proc/user_beancounters exists and df -h returns /dev/simfs drive. Also ifconfig returns venet0). When I do cat /proc/stat, I can see how each second about 50-100 processes are created and happens about 800k-1200k context switches! All that info is with the server completely idle, no traffic nor programs running. Top shows 0 load average and 100% idle CPU. I've closed all non-needed services (httpd, mysqld, sendmail, nagios, named...) and the problem still happens. I do ps -ALf each second too and I don't see any changes, only a new ps process is created each time and the PID is just the same as before + 1, so new processes are not created, so I thought that process growing in cat /proc/stat must be threads (Yes, seems that processes in /proc/stat counts threads creation too as this states: http://webcache.googleusercontent.com/search?q=cache:8NLgzKEzHQQJ:www.linuxhowtos.org/System/procstat.htm&hl=es&tbo=d&gl=es&strip=1). I've changed to /proc dir and done cat [PID]\status with all PIDs listed with ls (Including kernel ones) and in any process voluntary_ctxt_switches nor nonvoluntary_ctxt_switches are growing at the same speed as cat /proc/stat does (just a few tens/second), Threads keeps the same also. I've done strace -p PID to all process too so I can see if any process is crating threads or something but the only process that has a bit of movement is ssh and that movement is read/write operations because of the data is sending to my terminal. After that, I've done vmstat -s and saw that forks is growing at the same speed processes in /proc/stat does. As http://linux.die.net/man/2/fork says, each fork() creates a new PID but my server PID is not growing! The last thing I can think of is that all process data that proc/stat and vmstat -s show is shared with all the other VPS stored in the same machine, but I don't know if that is correct... If someone can throw some light on this I would be really grateful.

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• No Homegroup Computers, Network Troubleshooter Fails

  - by Mokubai

  I have a problem with my Windows 7 Homegroup, between two Windows 7 Home Premium machines. On one machine I get this: The other machine in the Homegroup is perfectly happy and is able to see and browse this faulty machine as if there is nothing wrong. The Network and Sharing Center shows that I am joined to a Homegroup on my "Home" network and nothing is out of the ordinary. I have tried leaving the Homegroup and rejoining/recreating it several times and that does nothing at all. Normal browsing to machine names and looking through folders seems to work, but it's a much more clunky way to get stuff compared to the convenience of the Homegroup facilities. Starting the troubleshooter detects some problems with a "Peer Networking" (PNRpr or something like that) service not starting but fails to fix anything. Sure enough when I go to view the services via Control Panel - Administrative Tools - Services I see that both the "Peer Name Resolution Protocol" and "Peer Networking Grouping" services are stopped. Attempting to start the "Peer Networking Grouping" gives an error that a dependency service will not start, the only service it is dependant on is the "Peer Name Resolution Protocol" so I try to start that and I get an error saying that the "service could not start due to error 0x80630801" This has happened before and I have fixed it then by using System Restore and restoring the machine to a week before when I knew it had all worked. This time though I cannot remember when I last used the Homegroup from this machine and I've installed quite a bit so I don't want to go fumbling through restore points trying to find one that works... Can anyone tell me if there is a way to reset things so that this machine is able to use the Homegroup again?

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• Automate creation of Windows startup script?

  - by Niten

  Is there a good way to automate installing local startup (rather than login) scripts in Windows XP and Windows 7, via the command line, WMI, COM, or otherwise (even Win32 if it comes to that)? I need to setup a local startup script on a large number of computers, and unfortunately, Active Directory is absolutely not an option. I would like to write a script or small program that I can run on each computer to perform the startup script installation in order to save myself a lot of error-prone point-and-click manual labor. I see that when one uses gpedit.msc to create a local startup script, information about the script gets stored in the registry here: HKLM\Software\Policies\Microsoft\Windows\System\Scripts\Startup However, if you create such a script and then delete its registry key, the script will remain listed in the local Group Policy editor; as is so often the case in Windows, apparently there is more going on there than meets the eye. This leads me to question whether it's safe to manually add subkeys for new startup scripts here (I wouldn't want my script to be overwritten by later changes made using the local Group Policy editor, for instance)... Another option that's occurred to me is to create an item in the Task Scheduler configured to run at system startup. However, my concerns there are twofold: Can this be automated any more easily? For instance, the at command doesn't appear to let you schedule a task for system startup, and WMI's Win32_ScheduledJob interface looks unreliable (it fails to show any of my currently scheduled tasks, for one thing). Would I be able to prevent users from logging in until the scheduled startup task is completed, as can be done with "normal" Windows startup scripts? Thanks in advance for any suggestions, I've been banging my head against this one for a bit...

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• Shrinking a large transaction log on a full drive

  - by Sam

  Someone fired off an update statement as part of some maintenance which did a cross join update on two tables with 200,000 records in each. That's 40 trillion statements, which would explain part of how the log grew to 200GB. I also did not have the log file capped, which is another problem I will be taking care of server wide - where we have almost 200 databases residing. The 'solution' I used was to backup the database, backup the log with truncate_only, and then backup the database again. I then shrunk the log file and set a cap on the log. Seeing as there were other databases using the log drive, I was in a bit of a rush to clean it out. I might have been able to back the log file up to our backup drive, hoping that no other databases needed to grow their log file. Paul Randal from http://technet.microsoft.com/en-us/magazine/2009.02.logging.aspx Under no circumstances should you delete the transaction log, try to rebuild it using undocumented commands, or simply truncate it using the NO_LOG or TRUNCATE_ONLY options of BACKUP LOG (which have been removed in SQL Server 2008). These options will either cause transactional inconsistency (and more than likely corruption) or remove the possibility of being able to properly recover the database. Were there any other options I'm not aware of?

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• Coffee spilled inside computer, damaged hard drive

  - by Harpreet

  Today coffee spilled over my table, and some of it (very less) reached the PC case placed under the table. I think little bit of it got inside the PC case through the front. As that happened the fan started running very fast and made noise. I tried to restart to see if it becomes fine, but the computer didn't start again. First it gave an error of "Alert! Air temperature sensor not detected" and didn't start. Next I tried again multiple times of starting the computer but then it gave some memory error. I was not able to start the computer. Incase there's a problem in hard disk or something related to memory, is there any way we can extract our work or data? I am scared if I am not able to extract my work in case some problem occurs like that. What options would I have? Help!! EDIT: I have attached the photo here and you can see the area spilt in red circle. The hard drive electronics have been affected and internal speaker may also have been affected. Any advise on cleaning and if hard drive can work? EDIT 2: Are there any professional services offered to extract data from blemished hard disk, like this one, in case I am not able to run it personally?

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• Anti Virus Service does not run - Windows XP SP3 32bit Home

  - by Stefan Fassel

  I have a somewhat strange problem here. I am trying to run Anti Virus Software on my Windows XP Home 32bit System. After a serious crash I had to fall back to an outdated copy of my initial installation and had Windows install 5 years of updates. So far so good. After Intalling a new Anti Virus Software (Bitdefender 2012) everything seemed to be fine, initial scanning went fine and configuration was working. But after restarting the System the Virus Scanner was unable to start up again. Even the Configuration console of the AV Software did not start. I tried scanning the System for malware, but nothing was found. Then I tried a different AV Software (MS Security Essentials), but in the end it did fail to start too. I have tried to start the Service manually, but I seem to be missing the privilege to do so. I am logged in as a Non-"Administrator" User with Admin privileges (Not much choices there on a XP Home System). I cannot switch to Administrator account outside the protected mode. When running Windows in protected mode I am unable to start the AV Software because it does not run in protected mode. I am a bit at loss now...

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• What can I do to prevent system power downs?

  - by Joe King

  Yesterday I was given my brother's old laptop - core i7, 2.67GHz, 8GB RAM, 128GB SSD, Win7 64 bit. It's a Sony Vaio Z11. Approx 18 months old. When running something computationally intensive, the fan starts up and after about 30 secs it just powers itself down with no warning. I guess it is overheating. There is nothing in the event logs to suggest what is causing it - the only thing I see is "the last system shutdown was unexpected" or something similar. This is a problem for me because I use a lot of number crunching apps, which pretty much makes it useless to me. I would like to know if there is anything I can do, other than the obvious things I've done already - open up and clean out dust, re-install the OS. According to my brother, this problem started about 6 months ago when it was already outside warranty. If it's just used for simple things - web browsing, word processing etc, the problem does not occur. Any ideas for what I can do to fix this ? Update: I found that the laptop has 2 hardware settings for graphics: Speed and Stamina - the Speed setting seems to use an nvidia GEforce GT 330M, while the Stamina setting uses an Intel chipset. With the setting on Speed, I can hear the fan the whole time, and the system powers down after a short while (5-10 mins) even just doing basic tasks (browsing this site for example), but doesn't shut down if I just leave it switched on. In this mode it also sometimes just freezes the screen and I have to power off myself. However on Stamina setting it only powers down when doing number crunching and never freezes the screen.

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• What does Apache's "Require all granted" really do?

  - by John Crawford

  I've just update my Apache server to Apache/2.4.6 which is running under Ubuntu 13.04. I used to have a vhost file that had the following: <Directory "/home/john/development/foobar/web"> AllowOverride All </Directory> But when I ran that I got a "Forbidden. You don't have permission to access /" After doing a little bit of googling I found out that to get my site working again I needed to add the following line "Require all granted" so that my vhost looked like this: <Directory "/home/john/development/foobar/web"> AllowOverride All Require all granted </Directory> I want to know if this is "safe" and does not bring in any security issues. I read on Apache's page that this "mimics the functionality the was previously provided by the 'Allow from all' and 'Deny from all' directives. This provider can take one of two arguments which are 'granted' or 'denied'. The following examples will grant or deny access to all requests." But it didn't say if this was a security issue of some sort or why we now have to do it when in the past you did not have to.

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• Windows 7 fails to connect to the internet a few minutes after startup

  - by SageTheGreat

  Problem Earlier today, when I turned on my desktop computer, my internet connection works fine. Cryptocurrency miners connecting and hashing as usual and I can browse websites. But after a few minutes, my miner fails indicating that there is something wrong with my internet connection. Tried refreshing my browser and is stuck at "resolving host", and then presented me an error. After that, i can't browse sites anymore. But the weird thing is that the network icon in Windows 7 shows no signs of problems. Solutions Made Restarted my computer without doing anything: Problem persists. Tried using the network troubleshooter of windows: Reported no problems Stopped bonjour still no progress. Loaded windows using Last good config: still no progress. Restarted Modem: No change. Current Status I currently did a system restore to my system to a point before installing the latest update from Microsoft. Because earlier today, I installed some updates and after that, the problem started to appear. (After system restore, same problem.) Latest Programs installed before the problem MS Visual Studio 2013 (but internet still worked fine after the install). I hope someone could provide answers on this problem. It is my first time encountering this. EDIT: Additional Info OS: Windows 7 SP1 64-bit AV: Avast Free Antivirus Internet Connection Type: Ethernet It appears that my Laptop can't even connect to the machine thru Remote Desktop My laptop and phone on WiFi works fine and can connect to the internet. EDIT 2: Whenever I boot into Safe Mode, my Internet is fine.

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• Errors with Using Webcam

  - by C.G.

  I have been having some issues accessing a webcam from my machine. Sometimes (not always) when I run a program that accesses the device (cheese, guvcview, and code using openCV), I get either of two messages, which lead to the program crashing. The first occurs after running the webcam for some time. libv4l2: error dequeuing buf: No such device VIDIOC_DQBUF: No such device The other will occur without even letting me have a chance to run the webcam. libv4l2: error turning on stream: No space left on device VIDIOC_STREAMON - Unable to start capture: No space left on device Occasionally after getting these errors I will also receive a message saying that no such device can be found for subsequent runs. Other than the times that the "No device found" message appears the webcam appears when I use lsusb. My machine runs Linux Fedora 16, and the webcam is a Logitech C920. I do have ffmpeg installed, and I have been able to run the web camera many times in the past without errors. What is particularly puzzling about these errors is that they just sprung up this past weekend. No new software or hardware has been installed on this machine recently; I haven't changed any settings recently either. It could possibly be a driver issue, but I don't know what could have changed which could lead to this issue. Any attempts at researching this problem has been fruitless as this seems to most commonly occur with multiple webcams. I am only working with one device. I'd appreciate any advice for this problem, as this has become a bit frustrating.

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• Can't get intel atom g-500 video driver to work with ubuntu 10.10 netbook edition.

  - by Matthew

  First of all I am completely new to Linux, so if you respond, please do so in a 'linux for dummies' tone so that my brain will be able to process it. I recently installed ubuntu on my dell mini-inspiron 1010. It has one GB of ram and an intel atom processor that uses the intel 500 graphic accelerator driver for windows and can run 1024x768 comfortably in xp. When I was installing ubuntu had quite a bit of trouble with my display and I am still unable to adjust my settings from 800x600x0x0 and there is no hardware acceleration. I visited the intel site and installed the linux drivers with the help of a friend but still no change. I tried adding resolution settings through xconf but they could not be applied even after I added the values. I am probably going about this totally wrong, but I've spent quite a lot of time browsing through forums and still haven't found a solution. Any help would be greatly appreciated. Also any other beginner tips that you have would be much appreciated. Thanks in advance, Matt

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• virtual memory commited

  - by vinu

  After a server bounce happens, and after around 40-45 days time period, we receive continuous “Committed Virtual Memory” alerts which indicates the usage of swap space in the magnitude of 4GB This also causes the application to perform very slowly and experience a number of stalled transactions. Server Setup: 4 Tomcat Servers (version 7.0.22) that are load balanced (not clustered) by 2 Apache Servers. And the Apache servers themselves supply static content and routing to these 4 tomcat servers. Java Runtime Version: java version "1.6.0_30" Java(TM) SE Runtime Environment (build 1.6.0_30-b12) Java HotSpot(TM) 64-Bit Server VM (build 20.5-b03, mixed mode Memory Startup Parameters: MEMORY_OPTIONS="-Xms1024m -Xmx1024m -Xss192k -XX:MaxGCPauseMillis=500 -XX:+HeapDumpOnOutOfMemoryError -XX:MaxPermSize=256m -XX:+CMSClassUnloadingEnabled" Monitoring – Wily monitoring is available in all the production servers that monitors key server parameters and sends out configurable alert emails based on pre defined settings. Note: Each of the servers also has two other separate tomcat domains that run different applications Investigated area: There is no Heap Memory Leak and the GC is running fine without any issues over any period of time The current busy thread count corresponds directly to the application usage – weekends and nights have lesser no. of threads compared to business hours ThreadLocal uses a WeakReference internally. If the ThreadLocal is not strongly referenced, it will be garbage-collected, even though various threads have values stored via that ThreadLocal. Additionally, ThreadLocal values are actually stored in the Thread; if a thread dies, all of the values associated with that thread through a ThreadLocal are collected. If you have a ThreadLocal as a final class member, that's a strong reference, and it cannot be collected until the class is unloaded. But this is how any class member works, and isn't considered a memory leak. The cited problem only comes into play when the value stored in a ThreadLocal strongly references that ThreadLocal—sort of a circular reference. In this case, the value (a SimpleDateFormat), has no backwards reference to the ThreadLocal. There's no memory leak in this code. Can anyone please let me know what could be the cause of this and what to be monitored?

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• How to access remote network resource from local machine

  - by jerluc

  I just configured VPN access successfully so that I now can connect to my workstation at work from my personal Linux box at home. The problem is that all of my dev files for a server I'm locally running are on my personal box and cannot be transfered to my workstation (at least not in any timely manner over this connection given the amount of data, in addition to the many reconfigurations which would be required for the server to run even if I could somehow get the files across). So essentially, I am able to run my server locally on my personal computer, however, the data-sources required for the back-end are accessible only from within the office's network. But is there some way for me to somehow either access the data-sources directly through a VPN connection or even if I need to be a bit more convoluted by connecting via VPN to my workstation and then somehow connecting to the data-sources through my workstation to my personal computer? And here I could really care less about the speed of the connection from my server to the data-sources since they will probably only be fetched a few times every hour or so. Thanks! Sorry if this a stupid question and/or doesn't make any sense! (And sorry for anyone who read this at stackoverflow, I posted it in the wrong area.)

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• NFS Datastore Appears Empty!

  - by daemonchild

  Hi guys, I've got an NFS server problem. The datastore connected and seems to be a valid datastore in both the vSphere client and under /vmfs/volumes. The issue is that it appears to be empty! I can create files (eg: touch /vmfs/volumes/nfs_common/thefile) and it is correctly written to the nfs store. I can verify this by looking on the nfs server itself. But the vmkernel only sees an empty datastore; the file disappears. Another freebsd box can mount the same NFS share and see the files correctly. Some useful data: ESXi 4.0.0 Build 208167 NFS is unfsd running on a Buffalo Linkstation Pro Duo (a bit hacky I know). The share has file system permissions set to 777 at the moment. My /etc/exports is as follows, and as I say it connects fine. /mnt/array1/ESX_Shared 192.168.16.0/255.255.255.0(insecure,rw,sync,no_root_squash,no_subtree_check) The ESXi servers can also successfully mount NFS shares from other NFS servers. Any ideas guys? Thanks, Tom

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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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