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• Problem with Lenovo x200s Wifi under Ubutu Karmic

  - by oneself

  Hi, I have just gotten my Lenovo X200s laptop, and I am install Ubuntu 9.10 Karmic on it. The installation went through without a hitch, but I can't get my wifi to work. lspci | grep Network Produces the following results: 00:19.0 Ethernet controller: Intel Corporation 82567LM Gigabit Network Connection (rev 03) 03:00.0 Network controller: Realtek Semiconductor Co., Ltd. Device 8172 (rev 10) The weird part is that when I turn the wifi hardware stitch on and off on the side of the laptop, I get the following printed in /var/log messages: Dec 30 23:24:48 temp-laptop kernel: [ 213.432302] usb 4-2: USB disconnect, address 2 Dec 30 23:24:52 temp-laptop kernel: [ 217.276310] usb 4-2: new full speed USB device using uhci_hcd and address 3 Dec 30 23:24:52 temp-laptop kernel: [ 217.441759] usb 4-2: configuration #1 chosen from 1 choice Does Ubuntu think my wifi card is a USB device? Am I missing some driver? What can I do to fix this? Please, help!

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• Process for configuring network settings on a headless rack mount device

  - by PherricOxide

  I'm with a small company that plans to sell a rack mounted network appliance which is configurable via a web interface (think of a router configuration page sort of deal), and I'm wondering in large data center like environments what the process usually is for the initial setup of such systems. The main question is, if the system is headless, how do you get initial remote access to it? Do companies usually first plug a server into a monitor/keyboard/mouse in order to configure the network settings before mounting it in a rack? How else would they know what the IP address of the machine was if DHCP (and it can't be hard coded because of IP conflict potential)?

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• How to force a host to not send a broadcast for an IP address in its own subnet?

  - by Bruce

  For a LAN, instead of a switch, I have built a topology where each machine is connected to a router. Each host is assigned an IP address from 10/8. Here are the interface details: Lets say I ping 10.16.0.3 from this host. The routing table of 10.16.0.2 has been configured to use the router (10.16.0.1) as the default gateway. But since the destination IP address (10.16.0.3) is in the same subnet it sends out an ARP broadcast. I want to disable this behavior of sending an ARP broadcast and instead force it to use the routing table. How do I accomplish this?

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• Program for drawing with pen tablet, like Salman Khan's one

  - by Halst

  I do a lot of sketching with my pen-tablet. I use Microsoft Paint in Windows 7, and it is just perfect except for bad anti-aliasing. I found some videos of Salman Khan, where his sketching is really smooth and anti-aliased. Do you know what program he might use? You can see a bit of its interface here: http://www.khanacademy.org/press/chronicle.HTML and some more: http://www.khanacademy.org/ http://khanexercises.appspot.com/video?v=GW8ZPjGlk24 Else, you can recommend me something else. I hope to find something like Microsoft Paint in Windows 7, but anti-aliased, or whatever.

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• best filesystem for an aws s3 like service

  - by gucki

  Hi! I need to build a fault tolerant, highly available key/value storage (no posix, only same functionaluty as S3) using cheap existing hardware. The storage should be able to handle several billions of items. The maximum size of items is around 1GB, most are only several KB. What's the best software/ filesystem for this task? I already had a brief look at mogilefs, mongodb (grid-fs) & glusterfs but I'm not really sure which is stable & fault tolerant enough. The simpler the setup and later expansion the better :). Corin

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• Probability of failure with larger number of network elements

  - by MikeKulls

  I'm having a discussion with a work colleague. I'm saying that a network with 100 elements will have pretty much 10 times as many failures as a network with 10 elements, ie a tech will need to replace faulty hardware 10 times more often. He suggests that the failure rate doesn't go up in a linear fashion and the failure rate will be significantly less than 10x, in fact only slightly more failures. This is not the probability of an outage etc, we are just talking in relation to the amount of parts that a tech would need to swap out in a given time frame.

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• Apache port forwarding with ZTE ZXV10 W300 router (provider specific firmware)

  - by dannote

  I'm trying to configure port forwarding for Apache 2.2 installed on Windows XP SP3 with ZTE ZXV10 W300 router. The computer has a static IP 192.168.1.2. Port forwarding is configured as following: Enable true Name Apache Protocol TCP (also tried TCP and UPD) WAN Host Start IP Address empty WAN Host End IP Address empty WAN Connection stream WAN Start Port 8080 WAN End Port 8080 LAN Host IP Address 192.168.1.2 LAN Host Start Port 8080 LAN Host End Port 8080 Port 8080 is open for both TCP and UPD in Windows Brandmauer. Apache configuration: Listen 192.168.1.2:8080 Router Firmware: Hardware Version V1.0.01 Software Version V8.0.02T03_CFA Boot Loader Version V1.1.2 The provider is COMSTAR. I'm not sure but it's said they flash routers with modified firmware. I have also tried to set up Bitcomet port forwarding on port 13514 and failed.

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• Is Ubuntu Netbook Remix actually lighter than Ubuntu Desktop?

  - by D Connors

  I'm running ubuntu on my work notebook. While it's not a netbook, it is a relatively weak machine. So, even though I'm not a big fan of the ubuntu netbook interface, I would be willing to use it if it's lighter (on RAM and CPU) than the desktop version. I know there are some very light linux distros available out there, but I'd like to stick with ubuntu both for it's community and for the support I have available here at my workplace. So, is Ubuntu Netbook Remix lighter on system resources than Ubuntu Desktop?

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• MySQL-5.5.10 - Lost connection to MySQL server during query (Both Web Clients and MySQL Slaves)

  - by kwiksand

  We've just upgraded our existing MySQL5.1 DB servers to newer (much better) hardware with MySQL 5.5, and things have been going mostly smoothly for almost 6 weeks. Just the last few days, I've noticed a few errors, such as: From a MySQL Slave: [ERROR] Error reading packet from server: Lost connection to MySQL server during query ( server_errno=2013) Or From Apache/Other: Lost connection to MySQL server at 'reading initial communication packet', system error: 110 At one point this evening, many webnodes reported this error for a three minute period (many such reports as this was in a busy period). However, the issues don't appear to correspond with any times of extreme load. For all intents and purposes, the connection/thread load on MySQL is at a normal rate (between about 10 and 40 connected threads), and Web load has been a LOT higher at times over the last few weeks. Could there bee other reasons for these connection errors, that I'm not seeing?

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• What are the "software" requirements for a 3D video?

  - by Diogo Rocha

  Today, looking for the technical explanations about MPEG4, I saw that it can implement the VRML rendering for a 3D video. This makes me wondering about the "software" requirements to make or to see a 3D video. I mean, assuming that I have all the "hardware" requirements(3D monitor, VGA, 3D-camera, etc), what should I need to make and see 3D videos looking over the "software" side? Must I need to make it on MPEG4 instead MPEG1 or MPEG2 because of the VRML support? May I need a specifc 3D codec to open and see 3D videos?? Until today, I believed that a 3D video was just a regular/ordinary video composed of 2 "overlapping layers". PS: This is the first time I'm researching about technical explanations/references about MPEG standards and 3D videos, any help or basic explanations will help.

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• Flexible virtualization infrastructure Design with libvirt

  - by Lessfoe

  I'm going to install a CentOS6 Server with Virtualization ( libvirtd ) capabilities on a DELL Server with Hardware RAID5 of around 6T of disk space ( It has 4x2T disks in a PERC700 RAID Controller ). I'm going then to install some guests which requires few resources except one that needs 500GB of disk space, 8/16GB of RAM and good performances. I was thinking about file images for guests storage but I'm not sure about the 500GB VM what needs good performances so that an LVM device could be better. So my question is what would be the best layout concerning: RAID setup ( RAID5, RAID1 + 1 disk for OS only. ) disk partitioning ( using the entire disk/ leave free space for future use and extending it with LVM ) guests storage management ( LVM devices or file images ( considering the 500GB VM that is performance demanding ) or mixed ) Where to put guests storage? /var/lib/libvirt/images or maybe in a custom dir separated from system /home/VMs Thanks in advance for any hint.

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• Looking for an open source email archiving application

  - by Joel

  I'm looking for an open source application that will archive my email. It might do this by logging in to my POP3 account on a regular basis and copying the emails across, or it might just read my Unix mbox/maildir file/directory directly on the mail server. It must be open and it must run on Linux (or any open OS actually). Ideally, it would have a web interface, but this is not a major requirement. MXsense (http://www.mxsense.com/mxsense.html) seems to be pretty-much what I want, except it's not open. I have no requirement for MS Exchange support. Any suggestions? The rationale (maybe a bit silly) is that I run Linux exclusively and it's still doesn't have an email client that is anywhere close to MS Outlook in terms of awesomeness, so I find myself switching between mail clients often. I would feel better about this if I had an archive of my emails, so it wouldn't matter which mail client I was using this month.

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• Exclude IPs from FQDN Resolution

  - by Jon Rauschenberger

  Is there a way to EXCLUDE IPs on an interface from FQDN resulution? Here's my use case; I have a domain joined Windows Server 2008 R2 machine that hosts multiple Web sites. We ahve DNS A records for the various sites that resolve to different IP addresses. I've added those IPs to the single NIC in the machine and the sites work just fine. The problem is that the FQDN of the machine now resolves any of the IPs on the machine. I only want the primary IP associated with the FQDN on the internal DNS servers. Is there ANY way to accomplish this? jon

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• XP Mode in Windows 7 professional recently ceased to work

  - by Ian FLetcher

  I have used Windows XP Mode in Windows Professional 7 once a week for around 2 years to run Quicken 98. About 2 weeks ago the XP Mode completely stopped working. I get different responses when I try to launch. I can sometimes see a launch screen for XP (which I never used to get) which then hangs Sometimes I just get a black screen Sometimes I get an error message in a cmd like interface that says "windows could not start because the following file is missing or corrupt \system32\ntoskrnl.exe please reinstall a copy of the above file. I have noticed that in the tools tab at the top of the screen "enable integration features" is greyed out. Any recommendations? Ian

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• Disabling a touchpad in Windows

  - by Shamaoke

  I want to permanently disable a touchpad in Windows running on my laptop, since firstly, I use a mouse, and secondly, when I work, I often touch it accidentally what causes definite inconviniences. I tried the following approaches to disable it but with no result: Turned it off through BIOS — there's no such function there; Turned it off through the touchpad configuration utility — there's no such function there; Turned it off through the device manager — the disable button is inactive; Turned it off through a hotkey (Fn + F1 in my case) — the hotkey doesn't work; Uninstalled the proprietary driver — Windows automatically downloaded the standard driver; Uninstalled the standard driver and turned off the automatic driver download function (Win + R ? "systempropertiesadvanced" ? Hardware ? Device Installation Settings) — all the same, Windows downloaded and installed the driver. How can I disable a touchpad? Windows 7; the Alps touchpad.

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• Gre tunnel Linux Cisco

  - by mezgani

  I've created a GRE tunnel between LAN A and LAN B. LAN A is behind a router, and LAN B is behind a Linux box and this box has a pppoe interface. When i do tcpdump on Linux box i see that the traffic is routerd to Linux box (tunnel end), so my need is routing the tunnel traffic to internet. I've added these rules to my iptables script, and i stay unable to connect to internet from LAN A Permitting Linux to act as router (necessary to forward packets) echo "1" /proc/sys/net/ipv4/ip_forward iptables -A INPUT -p 47 -j ACCEPT iptables -A FORWARD -i ppp0 -j ACCEPT iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -t nat -A POSTROUTING -o gre0 -j MASEQUARADE What i've forgot to set in this case?

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• Bridging VirtualBox over OpenVPN TAC adapter on Windows

  - by Sean Edwards

  I'm trying to configure a virtual machine (VirtualBox guest running Backtrack 4) with a bridged adapter over a VPN connection. The VPN is is hosted by the cybersecurity club at my university, and connects to a sandboxed LAN designed for penetration testing against various servers that the club has built. My host (Windows 7 Ultimate) connects to the VPN fine and is assigned an IP through DHCP, but for some reason the VM can't do the same thing, and I'm not sure why. It's like OpenVPN is filtering out packets from the MAC address it doesn't recognize. I want the virtual machine to bridge over the VPN connection, because our IT office has very strict policies about what you can and can't do on the network. I want to be able to run active attacks (ARP spoofing, nmap, Nessus scans) in the sandbox environment without risking the traffic accidentally going over the university network and getting my internet access revoked. Bridging over the VPN connection and running all attacks from inside the VM would solve that problem. Any idea why the host can use this interface, but the VM can't?

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• Macbook pro asks me to "Service Battery"

  - by Uwe Honekamp

  A couple of weeks ago I checked the battery and at that point in time (after 160 load cycles) it still had a capacity of 5000 mAh. Today, my 2006 macbook pro tells me via the battery menu to "Service Battery". According to Coconut Battery the current capacity is only 1590 mAh. The corresponding help text suggests contacting an Apple Authorized Service Provider (AASP) to have the computer checked. Before I decide to throw money at the AASP I'd like to understand what the AASP could possibly do to eliminate the problem. Isn't it more likely that the battery simply broke at 160 cycles and needs to be replaced? Are there any means by software or firmware to influence battery behavior? Of course, the computer hardware might be broken but how could this result in the described effect? And yes, I'm currently trying a calibration cycle but I have some doubts that it will save the day.

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• How do I connect to a remote desktop connection to access files but not graphically

  - by user26453

  Is there any way to connect to a remote Windows server via RDP but not graphically? What options do I have simply to connect to a remote Windows machine and access my files, but not have to do it via a graphic interface. i.e. is there an equivalent of SSH or SCP (file access is really what I'm looking to do) for Windows? I will add the caveat that I do not manage the machine, so installing any services would probably not be kosher, although I do have administrator access to the machine.

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• What is the best way to hide a command prompt window

  - by detj

  I'm running the headless interface of VirtualBox (VBoxHeadless.exe) with Ubuntu Server running on it. Every time I run VBoxHeadless, it starts a command prompt window which just sits on the taskbar taking space which could have been used by more useful programs. I want to hide this non-functional command prompt window (minimize to system tray or anything that just removes it visibly). How can I do this? It would be really cool, if this can be achieved without installing any 'minimize to system tray' utility. Any ideas??

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• Unlocking AMD Phenom II X2 550 Black Edition cores - what are the risks?

  - by Vilx-

  I've got the above mentioned CPU and a GigaByte GA-MA790XT-UD4P motherboard, which should be capable of unlocking the extra two cores - if I'm lucky and they're not faulty. The Internet is full of instructions on how to do that. What I don't have is spare money to buy new hardware if I brick something. What are the risks when attempting to do this? Is it completely safe, or can I be left with an expensive pile of junk? What should I keep in mind when doing so? Bigger cooler maybe (I'm running with the default box cooler)? Should I lower the frequencies too? I've never done any OC before.

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• Can I get dual monitor support (2xDVI) from my (DVI+HDMI) graphics card?

  - by nray

  It seems that pure 2 x DVI dual head video cards are becoming rare. Most cards feature something like 1 x DVI plus 1 x HDMI plus 1 x VGA or some other interface. The idea seems to be that you can just use an HDMI <= DVI adapter. One result is that cards are seldom marked " 2 x DVI " anymore, but does this mean that they support simultaneous output on all interfaces? Are all cards dual head these days? Take Asus's nVidia cards for example, they routinely have 1 x DVI plus 1 x HDMI instead of 2 x DVI, so my question is, are these equivalent to a dual head DVI card, or is there some detail required for dual monitor support? I use dual-monitor stretched desktops for digital signage projects.

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• How does "Compatability Mode" in Windows 7 affect the application?

  - by Robert C. Cartaino

  Background: Based on the answer given to this question: "Skype behaviour in the Windows 7 Superbar" ...you can get Skype to minimize to the system tray (rather than the task bar) by running it in compatibility mode. (red flags going off in my head) That's the behavior that I want but what does "compatibility mode" do to the executing application? I am concerned about changing the execution mode of an entire (important) application to a previous generation just to alter the user interface behavior a bit. So, what does compatibility mode actually do internally? What are the disadvantages, as in "how could the application (Skype) suffer?"

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• Defragment / Performance Monitor without Task Scheduler

  - by mjaggard

  My organisation has a policy of disabling Task Scheduler on all servers and workstations (don't ask, I tried once to wrestle the pig). I need to collect performance stats using Data Collector Sets in Windows 7 or Windows 2008 but the Performance Monitor interface requires Task Scheduler to be running. Is this possible because I'm not trying to schedule anything (except the collection of WMI information every 15 seconds but I doubt it hands that task off to the task scheduler)? Is there any way to trick it into thinking Task Scheduler is running? If not, is there any way to temporarily override the group policy to allow Task Scheduler to run? I've found that most group policy can be overridden in this way by an Administrator by editing the registry. On exactly the same vein, I want to defragment a hard disk on one of my workstations, but I can't get it to start because of the dependancy on Task Scheduler - is it possible to overcome this?

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• sound volume increase beyond 100% whenever possible on linux

  - by fakedrake

  Some audio output from files or streams is too low. It is obvious that hardware is able to play the same sounds but louder but because of the data it just plays it at some low level even at 100% volume. Vlc can generally increase the volume of a file up to 200%. Is there a way to do the same thing VLC does system-wide and if possible for an arbitrary v percentage value. If there is no application that does this, where should i look into for libs to do it myself or what code should i modify(eg code in the alsamixer) thank you

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