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• RAID striping on a desktop machine

  - by Blazemore

  I currently have a 120Gib SSD which is pretty fast for things like game loading times and video editing. However, I was wondering about getting another identical drive and hooking it up with a striping RAID array in hardware (I boot multiple operating systems). This would have the dual benefits of providing a larger logical drive, while also providing greater performance. However, I have a few questions: What kind of performance increase can I expect to see with a pair of good quality SSDs? How expensive is a quality desktop RAID controller? Will the controller present the OS with a single logical drive? Does this mean I can still partition it and multi-boot? Basically, can I treat the RAID controller as "a hard drive" at the OS level?

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• Origin of display connector numbers in XServer (e.g. HDMI1, HDMI2, DP1)

  - by Andreas N

  a custom mainboard has a DVI and a DisplayPort connector on the board. Currently, everything that is connected at DVI will be named "HDMI2" in XServer. I can see that by calling the "xrandr" tool (in Ubuntu Trusty Tahr). A display connected to the DP connector will be named "DP1" or "HDMI1", if I use a DP-to-DVI adapter. We are now testing a slightly upgraded board version, which has a newer CPU (Intel J1800, Baytrail) among other things and the position of the DVI and DP connectors are switched. Also, everything at the DVI port is called "HDMI1" and something connected to the DP port gets "DP2" or "HDMI2". Q: What causes these numbers to be produced in this manner and where (probably in the kernel) is it happening? I suspect the cause to be hardware related. Specifically, at which CPU pins the connector pins are routed and attached to. Q: Would it be possible to influence this numbering scheme in order to retain the previous numbering behaviour?

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• server down "without reason"

  - by Nick

  I have a Lenny dedicated server at Hivelocity. My server went down today. They doesn't know why. I don't know why. MTRG shows 7Mbps before went the server goes offline, ddos not probably. Hardware failure? maybe. but now is running ok. hacked? maybe. lastlog, md5sum, rkhunter, syslog and auth.log seems ok. my load is always between 0.02 and 0.3, the server runs a small website but with 2million pageviews/day and never failed before. Where can I find more information in my logs? where I start looking?

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• How to makesure VM is in Para virtualization mode on XEN?

  - by ananthan

  I am having a server running XEN,with ubuntu 12.04 as Domain 0. Intel VT is turned on by default and i dont want to run any Windows OS as VM. So 1. how can i makesure that all the created VM will be in paravirtualized mode even with VT enabled? I have heard that in Full Virtualization hypervisor needs to work hard for emulating all the underlying hardware,which may reduce performance for too much i/o specific applications when compared to para mode. 2.Since i am running only Linux VMs do i really need to enable VT support? 3.Can i be able to run Linux VM in para mode with VT enabled? 4.Will simply turning on VT support changes virtualization from para to full virtualization?? 5.Will there be any performance improvement for VM running Linux OS if VT is enabled?

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• How can I create a bootable CD-ROM/USB Drive? (With NTFS + USB Drive support)

  - by RonK

  My motherboard got fried and I was forced to get a new hardware set (MB+CPU+RAM) so in most likelyhood I'll need to reinstall my Windows 7. I usually follow procedure and put the OS on the primary partition and my data on a logical partition - so I can format the primary without concern - but this time I made a mistakte and left some crucial items on the primary partition. I want to create a bootable CD-ROM/USB Drive which can read NTFS so I can access this data. If booting via a CD-ROM, I would prefer being able to connect a disk-on-key/My Passport to the computer and be able to access it to transfer the data to it. How can I do it? (free 3rd party applications are most welcome)

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• Monitoring/logging a malfunctioning internet connection

  - by Pekka

  I have a mysterious internet connection problem: Every 15-20 minutes, the connection will become very slow, and take 2-3 minutes for anything to load. I've had a technician from the ISP over here to test the hardware, and everything is in pristine condition. They have no other explanation than a configuration error on my machine, a possibility I can exclude 90% because I'm experiencing the same problems with another machine. I will have to monitor the situation now, and I would like to run a program that logs when internet connections become slow. I thought about putting something together using at and wget. Does anybody know of some other tool for this that does this out of the box - maybe something with an adjustable request frequency, logging connection speeds etc.?

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• Windows XP crashes by GT610 driver (nv4_disp)

  - by undone

  I have a PC which was working fine but one day screen went dark and nothing was shown. I thought the problem is graphic card, so I replaced it with new one. I bought a new graphic card (GeForce 610) and installed it on my system. I formatted my hard-drive and installed a fresh Windows XpSp3 and its drivers. Everything was fine but after installing graphic card's driver, I got an error saying windows got stuck in an infinite loop and it couldn't get out (in nv4_disp). I uninstalled it and downloaded its last version and installed it. Unfortunately, I got the same error and windows restated! Here's my system: Pascal Motherboard PT880PRO Intel CPU Windows XPSp3 I searched this issue on the internet and I found bunch of suggestions (from cleaning hardware to installing latest version of its driver) but nothing help! Any help would be appreciated! Thanks.

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• Error sysprepping Windows 8 Enterprise 90-day trial

  - by Philip

  I am using the Windows 8 Enterprise 90-day trial to evaluate the latest version of Windows for a private school. The way I work is that I use sysprep to prepare an generalized image, then I clone it to the school's computers. When I follow the instructions and try sysprep on my installation of Windows 8 in VirtualBox, sysprep thinks briefly and gives me an error message: Fatal error occurred while trying to sysprep the machine. Once I acknowledge it, sysprep closes. I checked the Windows Event Log, and there's nothing there that I could see. I also followed some instructions to cure this problem, but nothing changed. The error remains. My best guess is that the 90-day trial prohibits the use of sysprep, but I can't be sure. It might also be my use of VirtualBox, or who-knows-what. Has anyone had success with this, or encountered the same issue on real hardware?

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• What security changes are necessary when connecting DSL modem directly to PC instead of router?

  - by Mike B

  Windows XP I have a user with a single PC that was connected to the internet via a standard home router. The router is now having hardware-related issues and to save money, they're considering connecting the PC directly to the DSL modem since they don't need to share the internet connection or need wireless functionality. If they decide to do that, I'm concerned that this will introduce additional security concerns. Is the Windows Firewall sufficient and Microsoft Security Essentials sufficient for protecting a computer directly connected to a DSL Modem? Or is other security software needed here? Ideally, I'd like to avoid having third-party firewall software constantly bringing up alerts and asking them to approve everything. Also, just to clarify, their use cases are just internet browsing and email.

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• How to convert WinXP + Apps on RAID0 to use just one of the two RAID disks?

  - by chris5gd

  I have two 150GB SATA drives in hardware RAID 0, on which I have my C: (Win XP) and D: (installed apps). I'm migrating to Windows 7, but I want to keep my XP system until I've got it all running smoothly. So I want to: break the RAID move C: and D: to one of the drives (there's enough room) use the other drive for Win 7 boot into one or the other Clearly I can't move C: and D: after breaking the RAID, so I'm assuming I need to image the two partitions first, then break the RAID and restore the images to one of the drives. So my questions are: Is this possible? If so, what would be a good (free) imaging/restore tool? How do I ensure that the drive will boot after restoring the images? What sort of gotchas should I look out for? If there's a better solution than this, I'd be grateful for suggestions. Thanks!

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• HP Presario CQ 61-322ER (VV884EA) Wi-Fi hang up!

  - by qgrabber

  I have my new laptop and don't have Windows XP drivers for it. I found that it contains the Broadcom BCM4310 chip, but when I install any Broadcom driver my laptop hangup on installing bcm5*.sys driver. Only power-off button make any effect. After reboot the device list (Device Manager) contains Broadcom WLAN adapter, but it is marked as disabled, for some hardware errror! Also if I disable device before, and install driver - then - all is OK! But when I try to enable it, Windows hang up anyway (no speaker beep, no mouse input, no keyboard input - nothing) What is the solution?

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• Can't decide on a new distro

  - by Alex W

  I've had Ubuntu (9.10) on my netbook in the past and I really liked it. I'm currently running Fedora and feeling like I should "change it up" again. I've played around with Ubuntu 10.04 Lucid a little, and so far I'm very impressed. I've always wanted to try Arch, but I'm worried I won't have the driver support I need for all the non-standard hardware in a netbook. Does anybody have a suggestion for a new distro to try? I'm preferably looking for something feature-rich over light-weight, and something that I can have up and running with a minimum of configuration (at least partially working). Thanks!

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• Computer freezes when CD/DVD is enable, computer HP Pavilion dv98278 Notebook OS - Vista

  - by tom

  As the title states, when my CD/DVD drive is enable my computer freezes showing a diagonal patter on the monitor. This is what has been attempted (DF - didn't fix): (1) cleaned regsitry file - DF; (2) uninstalled and installed driver HL-DT-ST DVDRAM GSA T20L ATA - DF; Yelled profanities at the computer - DF but I felt better. I want to install OS 7 but this makes it much more complicated. It's appearing as a hardware issue to me, however, what do I know. Any suggestions?

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• Ubuntu Wired network(ethernet does not work)

  - by user36777

  It was working just fine, until the other day I yanked it out. The wireless works just fine on the same router. If I login to a windows 7 instance on this dual boot laptop then the ehternet works just fine. So it's not a hardware, cable or router issue. The card even gets an ip, but I can't connect to the internet. Here are the details from route, iptables, ifconfig, ping etc. Any ideas? I have been struggling with this for day, none seems to have an answer. http://pastie.org/954816

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• minimum required bandwidth for remote database server

  - by user66734

  I want to build a small warehousing application for my company. We have a central warehouse which distributes to 8 sales points across the country. They insist on an in-house solution. I am thinking to setup a central mySQL db Linux server and have the branches connect to it to store sales. Queries to the db from the branches will be minimum, maybe 10 per hour. However I need all the branches to be able to store each sale data ( product ID, customer ID ) in the central db at peak time at most once every five minutes. My question is can I get away with simple 24mbps/768kbps DSL lines? If not what is the bandwith requirement? Can I rely on a load balancing router to combine additional lines if needed? Can you propose some server hardware specs?

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• Black Screen on Startup even after running chkdsk

  - by phwd

  I started an old (Dell Inspiron 2200) the startup goes all the way to Microsoft Windows XP Logo then I get a black screen. I am still able to move the cursor but that is about it. I tried running Recovery console (from CD) with chkdsk command. First time it said they were errors. I decided to do a fixboot and see if the errors went away. They did. Restarted and still no luck. If there are commands that I can call either from recovery console or elsewhere to further describe the problem please tell me and I will re-edit the question. srvtag:7XNSG81 Also what are my full range of options before wiping the hard-drive (if that is even the problem) I want to exhaust all options before replacing hardware.

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• Windows 7 startup problem

  - by elaine

  I purchased a computer a few weeks ago which runs on Windows 7. I was just watching a show on Hulu when it shut off. I don't know if I accidently pushed the power button with the keyboard or what. When I turned it back on my first screen says F5 key for HDD recovery. I pressed the F5 button and the screen goes to a Windows setup (EMS enabled) screen which then goes to my regular Starting Windows. After that one I get the box with x:/windows/system32/cmd.exe-startnent.cmd. If I don't press the F5 button I go to a screen which tells me Windows failed to start, a recent hardware or software change might be the cause. It gives me two options- Launch Setup REpair(recommended) or start Windows normally. I've pressed enter to choose the first choice but it does nothing but brings me to the same screen. Anyone have any ideas?

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• Extract X11 configuration information from running instance.

  - by kasterma

  Since I had a hard disk die on me, I figured I could easily try some other OS (I usually run Ubuntu). Turns out that Ubuntu flawlessly recognizes my video card and monitor (X11 works right out of the box), and none of the other systems I tried gets anything working (I tried CentOS and FreeBSD). In my now working version of Ubuntu I cannot find a configuration file with information I could try to use with one of the other versions, which makes me guess that it just detects the hardware every time. Can I extract its choice for drivers and configuration options somehow (so I can try these same options in the other systems)?

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• Isolated Network Set-Up

  - by Isaac Kleinman

  I am looking to set up a small network for a client which would be isolated from his primary network. (I'm hoping to set-up the additional network as VMs on the primary network.) I've instructed the client to request a bunch of static ip addresses from his ISP, but I'm not sure how to proceed with setting this up. What hardware will I need and how do I go about the configuration? Heavy security is not my concern. All that's really required is that web requests from the two networks be presented to the outside world with different ip addresses.

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• Debian Based Server not booting, soon after GRUB screen it restarts?

  - by Krauser

  I have tried running memtest, it start get about half way then abruptly restarts. I assume this is not a problem with the OS itself but rather a hardware issue, I have checked various logs when after about 10 reboots it starts ok, /var/log/kern.log /var/log/syslog /var/log/dmesg All I get is: EXT4-fs(sdc1): re-mounted. Opts: errors=remount-ro restart So I ran fcsk on the drive, to check if the fs was failing and it was fine. Really don't know how to find why the server is continuosly restarting andif I get lucky it will boot up.

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• Windows 7 File Transfer Speed over Gigabit is slow

  - by Adam Haile

  I've got windows 7 pro running on my file server and my main desktop. Each has a gigabit network connection and I'm connected to a gigabit switch. However, when trying to copy some large files, it's running pretty slow at a measly 12-15 MB/s The data is coming from a 7200RPM SATA drive (which I think should be good for almost 150MB/s) and going to a Drobo on the server connected via FireWire 800, so I can't think of any bottlenecks I might have in the hardware. But TeraCopy still says it's only going at 12-15 MB/s What else could be wrong here?

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• How to set up an extended desktop on dual monitors in Kubuntu 9.04?

  - by Dennis

  I'm using my laptop (Lenovo Thinkpad T60) and I have a secondary monitor (which has a different resolution than my laptop screen) connected by VGA. Kubuntu recognizes the monitor and it functions but my desktop is mirrored (i.e. an identical copy) across the dual monitors (which is useless to me). How can I extend my desktop across both monitors? P.S. I googled it but the solutions I found weren't standard, they were hardware specific and you had to manually change system files, etc.. There must be an easier way. edit: Here is a snapshot of the settings.

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• Does the size of the monitor Matter?

  - by Arsheep

  I have a old computer, and I want to buy a big LCD. The best I've found so far is Viewsonic's 24" LCD TFT monitor. So will it run without any problems, or do I need to upgrade the video cards or something as well? The computer is not too old: it has P4 board and celeron processor, with 128 graphics memory. And in display properties, it says that the maxium that I can use is 1280 x 1024 resolution. I am noob hardware-wise, so need help on this stuff. Thanks

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• Does the size of the monitor Matter?

  - by Arsheep

  I have a old computer, and I want to buy a big LCD. The best I've found so far is Viewsonic's 24" LCD TFT monitor. So will it run without any problems, or do I need to upgrade the video cards or something as well? The computer is not too old: it has P4 board and celeron processor, with 128 graphics memory. And in display properties, it says that the maxium that I can use is 1280 x 1024 resolution. I am noob hardware-wise, so need help on this stuff. Thanks

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• What OS for Eee PC ?

  - by crivateos

  Hello. I've just bought new Eee PC 1005 (with Atom N450, 250GB and 2GB memory) without any pre-installed system. Now I'd like to install windows and linux distribution on in. What should I choose ? I am a programmer and web designer, so I need Java IDE , Python interpreters, and Photoshop (on windows). Will Win 7 Pro 32bit work ?Or should I choose Windows XP ? And what about linux distro ? Ubuntu, Eeebuntu, Ubuntu netbook edition ? btw is it true that linux's grub overrides mbr so that hardware system restore doesn't work ?

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