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• Can I use VT-D with a windows host for a VM?

  - by Journeyman Geek

  I've got a fairly beefy gaming system that I also run occational virtual machines on. It runs windows 8 and the built in hyper V virtual machine software at the moment and has a core i7 3770 (which unlike the unlocked model, should support VT-D), an Asus P8Z77V and a gforce 660 video card(also asus). I figure that if I could use VT-D I could add a cheap dedicated 3d card for a VM, in case I wanted somewhat more than the 'basics'. I know KVM and Xen support this to some level on linux, but can I do so on windows? I'm open to switching VM software if need be.

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• How Lenovo x200(x61) tablet is so great for programming? whats up with so low GHz processors for deb

  - by Piddubetskyy

  for best laptop for programming after reading here looks like its Mac vs Lenovo (tablet, because tablet is only why I would choose it over Mac). I do crave that tablet but low speed processor scares me. Intel Core i5 or i7 in Sony Vaio sounds more attractive (2,26 - 3GHz for lower price). Yes, Lenovo can be fast, like x201, but with good specifications its over $2,000 its a little too much. For a lot of development I just don't want to wait every time while program compiles and builds during debugging. I want it fairly fast and smooth. Can anyone advice their experience with Lenovo's tablets?

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• after upgrade from 10.04 to 12.04 cannot boot with linux 3.2.0-24-generic-pae

  - by Ricardo

  After upgrade from 10.04 to 12.04, I cannot boot with linux 3.2.0-24-generic-pae: process gets frozen in a xubuntu initialization screen (I had qimo installed). If I try the recovery mode (with the same Linux version), booting freezes after this message: Begin: Mounting root file system. If in grub menu I choose Previous Linux versions, I can boot using Linux 2.6.32-41-generic-pae. But once logged in, some things don't seem to work (apt-get update fails, update manager fails, HID menu does not provide suggestions...) (to be honest, I have no idea whether this is part of the bigger issue) Reading in Ask Ubuntu through apparently similar problems, I decided to follow some advices: got boot-repair and run it. The problem remains & I got this report. I also run as root in terminal $ sudo update-initramfs -u and this is what I got: update-initramfs: Generating /boot/initrd.img-3.2.0-24-generic-pae cryptsetup: WARNING: failed to detect canonical device of /dev/sda1 cryptsetup: WARNING: could not determine root device from /etc/fstab /tmp/mkinitramfs_EIDlHy/scripts/classmate-bottom/45xconfig: 9: .: Can't open /scripts/casper-functions What else? My pc is Intel® Core™ i7 CPU 870 @ 2.93GHz × 8, graphs is GeForce 8400 GS/PCIe/SSE2, memory is 7,8 GiB. I have two questions: Is this a bug in the newest kernel I should report? Is there anything I can do appart from a fresh install?

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• Dell Inspiron7520 and ubntu 12.04 issues

  - by user91358

  I have a DELL Inspiron 7520 in the highest configuration: 3rd Generation Intel® Core™ i7-3612QM processor (6M Cache, up to 3.1 GHz) 15.6" Full High Definition (1080p) LED Display 8GB3 Dual Channel DDR3 SDRAM at 1600MHz 1TB 5400RPM SATA HDD + 32GB mSATA SSD w/Intel Smart Response Blu-ray Disc (BD) Combo (Reads BD and Writes to DVD/CD) AMD Radeon™ HD 7730M 2GB 6.09 lbs and I have installed Ubuntu 12.04 few days ago and I'm facing some issues: 1) sometimes the whole ntb freezes and I have to hold power button for 5 secs to shut it down. I think it is something with VGA and connected external monitor. I have read somewhere that it is already a reported bug, but what I am not sure about that it is doing sporadically. Sometimes it freezes right after I log in, sometime I ran few hours and then it freezes. I am using those proprietary drivers but I wasn't been able to install those with updates. 2) the next issue is the fan is quite noisy even when the ntb is almost Idle. (max 10% CPU usage). Can you recommend me some software which could do this power management to lower the noise? I have tried CPU frequency scaling indicator, but it seems that it has not any effects. 3) and issue no. 3: when I want to log out, restart or shutdown using the menu in upper right corner the upper and left trays disappear, but programs are still running and they won't close to complete log out or shutting down the OS. When I use the CLI command, it works fine. Thanks for any help you can provide.

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• games and movies become too slow after some time

  - by ishaq

  On my gaming desktop, I was fixing my desktop's power supply when something seemed to burn (I got that stinging burning smell). However when I turned ON the computer (it was OFF before), everything seemed to be fine. However, I have noticed that now it becomes too slow if I play a game or movie on it. I am talking about the computer becoming painfully slow after about 5 minutes into the movie/game (it works fine otherwise e.g. browsing), it becomes so slow I can see individual frames from movies/games. What could be the problem? A fried video card? friend memory (RAM), something else? My system's configuration is: Intel Core i7 CPU 3.40GHz 8GB DDR3 RAM 2TB WDC HDD NVIDIA GeForece GT 220 (1GB) Thermal Take Commander MS1 Chassis ( http://www.thermaltakeusa.com/Product.aspx?S=1394&ID=2051 ) mainboard: Intel DH67CL AAG10212-208 Realtek High Definition Audio

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• Any reasonable UPS for a Desktop PC, just to shut it down?

  - by Michael Stum

  While I do have a surge protector to protect against overvoltage (hopefully), I have nothing against undervoltage. When a lightning storm hits, I had the lights flickering at some point. The PC continued to run, but it got me thinking of getting a UPS as a way to a) have a clean 120V/60Hz power source and b) have a way to shut down the PC in case something bad happens. I heard not all UPS' protect against power spikes, so I wonder if someone has a recommendation? It does not need to keep the PC on for a long time if the power goes out, it's good enough if it shuts down the PC after 5 minutes or so. There are 2 PCs connected. One is a Core i7-860 with a Radeon 5870 running Windows 7 Ultimate (so quite power hungry. It uses a 600W PSU but I have no measurements of the actual usage), the other one is a Windoes Home Server, running WHS/Windows Server 2003. Any recommendations in the low-price segment?

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• Any ramifications to disabling ClearPageFile

  - by user34710

  I am runing a Dell XPS 15z with a quad core I7, 8gb ram, 7200rpm hdd, windows 7 ultimate. My laptop was taking around 3 minutes to shut down, which seemed far too high to me. I did a bit of investigation, and it seemed that the ClearPageFile reg entry was set to 1, meaning that upon shutdown my pagefile.sys was being cleared before actually shutting the machine down. When I disable this setting, my laptop shuts down in about 20 seconds - clearly a big gain. My question is, are there any side effects of having this turned off (other than the security risk of the HDD being stolen, and still having any important info that was in the RAM up for grabs)?

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• Why does Ubuntu 10.04 not see my hard drives?

  - by CT

  I am trying to install Ubuntu Desktop 10.04 64bit to a new machine. mobo = gigabyte x58a-ud3r cpu = i7 930 ssd = Kingston 64GB V+ hhd = wd 1tb black When the installation gets to the prepare partions step, no partitions are listed. Drives are recognized by BIOS and WinXP setup sees them. I have also tried Ubuntu 9.10. It does not see the drives also. Just searching around I found a suggestion to select "no dmraid" in additional options screen. This did not seem to help. Any ideas?

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• Freeze during Battlefield 3 - Probable Hardware issue?

  - by HendsteR

  my friend's notebook frequently freezes during BF3 sessions since ~1 1/2 months. It runs Win764Bit and he already reinstalled windows during the process, it didn't help. So we guess it might probably be a hardware issue. Now the question - which part of the hardware could effect a total freeze of the system WITHOUT getting a bluescreen? Or are there any known software issues he could also try? The hardware specs are: Acer 7745G Intel i7 720QM AMD Mobility 5850HD - Running Catalyst 11.6 now btw. (all drivers tested from 11.2 to 12.6 though) 4GB Ram 1.333MHz Oh and yeah, he just added that it crashes playing Diablo3 from time to time, too. Please help :)

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• Why can't I open programs after watching youtube videos for a while?

  - by manjivsanotsu

  I have recently built a new PC, and it worked fine for a while (1-2 months of no problems whatsoever). However in the recent weeks I noticed that after I watched some youtube videos and closed everything, I can no longer do anything except move the mouse and expand the Startup Menu. If I click on any of the programs on the Start Menu or type a program on the Run text box, it won't open anything. I can't open taskmgr, or windows explorer, or even shut down the PC. I don't have anything else running when I'm watching videos except ZoneAlarm and Avast. The only workaround I can do when this happens is a forced shutdown (holding the power button of my PC), and restart if I wanted to do anything more. But this happens a lot - about 4-5 times a week so I'm worried it would fry up my hardware if I keep on doing this. OS: Windows 7 Other Installed Software: Open Office, Tropico 4 game, Adobe Photoshop Browser used: Google Chrome Hardware: CPU: i7 2600K RAM: 16 GB Motherboard: Asus P8Z68-V GEN3 Hard Drive: 120GB Corsair Force GT SSD Graphics: 2047MB GeForce GTX 560 Ti

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• Missing kernel on debian-testing-amd64-DVD-1

  - by Kyrol

  I want to install the Debian testing linux version. But at a certain point of the installation, an error occurs: Impossible to install kernel. a compatible kernel version is missing... … or something like that. I see that the image ISO of the DVD is less than 4GB, but is impossible that there is no compatible kernel version for the system. I have an Asus X53Sc with Intel core I7-2630QM, Geforce GT 520MX.

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• Can most Intel processors run 64-bit Windows 7?

  - by Jian Lin

  Can most Intel processors run 64-bit Windows 7? Such as all the i7, i5, Core 2 Duo, Dual Core, Single Core with HT, and even just Single Core? I think a popular view is that if you can run 64-bit Windows 7, then use it? It might have driver compatibility issue but if there is no device hooked up, then there is no problem? What about some software / games not compatible with the 64-bit version or may run slower? thanks. update: a couple of my machines have 4GB RAM. so 64-bit Win 7 can make use of the full 4GB RAM instead of only about 3.2GB

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• High system cpu load (%sys), system locks

  - by Mark

  For the last two weeks we are having intermittent severe spikes in system cpu usage (shown as %sys), which last for maybe half a minute, locking most processes, including ssh. I've been trying to figure this out, but atop doesn't show anything relevant (system usage for processes it shows is insignificant), spikes are intermittent and I could not reproduce the spike using any workload for the web application this webserver hosts. If you have any ideas on how to debug high %sys and (sometimes) %si CPU usage, please share them. System specs (don't know if any of this is relevant): Dedicated server, CentOS 6, core i7 950, consistent 4 to 8 GB RAM free at any time, hard drives are in RAID-1. Additional info: dmesg output doesn't change between spikes /var/log/messages doesn't change between spikes Here is cat /proc/vmstat Here is output of mpstat 1 during a typical spike Add 07.11.11: looks like simple reboot restored system state, and we might never know what caused the disturbance in first place.

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• How to convert text to decimal in openoffice calc?

  - by wurlog

  I have a column which contains: € 53,28 € 1.336,0 € 69,90 € 296,50 € 899,00 € 149,90 € 697,40 and so on. I want to sum the column up, but for openoffice it is text and not a decimal. What I did: =SUBSTITUTE(F7,".","") to get rid of the the dot |€ 1336,0| =SUBSTITUTE(G7,"€","") to get rid of the euro symbol | 1336,0| =RIGHT(H7, LEN(H7)-1) to get rid of the blank |1336,0| =SUBSTITUTE(I7,",",".") to change the comma to dots |1336.0| and after that I copy the whole column and paste it as "unformatted text" only after these steps I get a number with which openoffice can work. Isn't there an easier way???

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• Ubuntu installer shows three small screens

  - by Sylan

  I'm trying to install Ubuntu (or Kubuntu, which I tried first) 13.04 on a new laptop. I need the install in UEFI mode in order to properly dual boot with Windows 8. I've managed to overcome most of the UEFI issues up to the installer, which appeared as a black screen until I used nomodeset. Now the installer will appear, however it does fit my screen size. Instead, it appears as three small identical screens across the top of the monitor. I thought the problem could be solved by changing the display resolution in GRUB via changing the vga number, but this simply expanded the width of the three screens. While I could install it at this point, the identical screens are too small for me to be able to read the installer. As well, the "Try Ubuntu" option simply gets stuck at a black screen. I'm afraid these problems may persist through the installation if I attempted to continue. Additional information: The laptop is a Lenovo Ideapad Y580 with an i7 3630qm processor, and a GeForce GTX 660m graphics card which works alongside an Intel HD 4000 integrated card via Optimus.

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• Which OS should I boot into for virtualization?

  - by acidzombie24

  This might be a silly question. I use windows 7 99% of the time. I run linux 10% of the time and XP 5% of the time. I am thinking about getting a Intel® Core™ i7-2600 Processor which has hardware support for virtualization. I dont think i want more than one partition. May have a swap partition. Which OS should I make my primary (and only) partition? I suspect windows7 if i am always using it as going through a linux layer would slow it down. Does it matter much which OS i use if i have hardware support for virtualization? At the moment I am using VMWare player. I suspect software doesnt effect performance?

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• Slow remote desktop connection to VPS

  - by Jonathan

  When I use Windows 7's remote desktop connection to our company's VPS (Win Server 2008 32bit) I receive a very slow connection - most of the times it actually grinds down to a complete halt. This is in contrast to my team mates which have no problem remoting to the VPS. I'm using a brand new Dell Studio 1558 laptop with Intel Core i7 and 4GB RAM with a clean installation of Windows 7 64bit Ultimate. Any suggestions for how to diagnose \ solve \ workaround the problem would be appreciated. UPDATES: I checked, and it seems the problem exists with all the computers connected to my home LAN. Once I take my laptop to the nearest coffee shop it works fine. What could be the problem with the LAN?

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• Is the quadro 4000 still worth it's price? [closed]

  - by aknewhope

  I am going to be purchasing a quadro graphics card for learning 3d CAD at work. It's not critical I have it right now otherwise I would just buy the current 4000 (PC). I am buying this with my own money and am concerned Nvidia will release a new Quadro 4000 sometime in the near months. Is the current 4000 still worth it's price tag at $700.00? If i were to purchase it, how long would it be useful? I am going to be running E-PLAN, SOLIDWORKS, DRAFTSIGHT, MASTERCAM. My computer is a second generation i7-2600k with z68 chipset (intel DZ68BC mobo).

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• Windows 8 freezes on startup when intel VT-d is enabled

  - by John Nevermore

  I don't know what to make of this situation: Windows 8 freezes after about 3 seconds after booting to the log in screen. The only way i have been able to avoid the freeze, is if i set VT-d disabled VT-d enabled, but Nvidia drivers uninstalled (running on integrated graphics) VT-d enabled, Nvidia drivers installed, Hyper-V feature enabled My goal is to get Windows 8 running with VMWare (ie. Hyper-V has to stay disabled), VT-d and the latest NVidia drivers. Specs: 32 GB of ram Intel Core i7-2760QM NVidia Quadro 1000M Intel 520 SSD 480GB Maybe somebody has experience with this kind of a situation ?

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• Just installed Ubuntu 12.04. When booting, all I get is a black screen with cursor

  - by user66378

  Installation appears to go fine. After rebooting, I get my motherboard loading screens, but when it comes time for Ubuntu to boot, I just get a black screen with a blinking white underscore in the top-left - same as I got when waiting for the install CD to load, except it lasts forever. The only keypress it seems to recognize is ctrl+alt+del, which reboots. Letters don't register, function keys w/ or w/o modifiers do nothing. I've installed Ubuntu 12.04 twice and got the same error. The first time, I installed it as the only OS, and had it take up the whole disk. The second time, I installed Windows 7 first, then Ubuntu by specifying custom partitions. After this install, it would boot straight to Windows without showing grub. I used EasyBCD to add the Ubuntu installation to grub, and this got grub to show, and let me select it, but it led back to the same error described up top. I've had Linux Mint 11 and 12 installed on this PC, but was unable to get previous versions of Ubuntu to install (always had errors while installing, not after). Hardware: Intel Core i7-2600K Sandy Bridge 3.4GHz (3.8GHz Turbo Boost) LGA 1155 ASUS SABERTOOTH P67 (REV 3.0) LGA 1155 Intel P67 SATA 6Gb/s USB 3.0 ATX Intel Motherboard EVGA 01G-P3-1371-TR GeForce GTX 460 (Fermi) CORSAIR Vengeance 16GB (4 x 4GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Western Digital RE4 WD5003ABYX 500GB 7200 RPM SATA 3.0Gb/s 3.5" Internal Hard Drive

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• For web development which is more important - CPU and Graphics card OR Ram and SSD Harddrive?

  - by adam

  Buying a laptop is always hard work and questions about specific models dont age well on forums. A popular dilema (especially with apple macbooks) is whether to spend more for a faster cpu and graphics card but settle for standard ram and hd OR drop down and spend the savings on more ram and a faster harddrive such as a ssd. Im wondering for web development i.e. ide, unit tests, photoshop work and some user testing screen capturing now and again what would provide better performance. ( No games, music production or spielberg standard video editing.) For examples sake the current apple lineup for their 15inch macbookpros. 2.66 cpu i7 4gb ram 5400rpm drive 4gig ram vs 2.4 cpu i5 8gb ram 124gb sdd roughly the same price.

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• what may cause unexpected log outs?

  - by lalebarde

  Sometimes, my Linux PC unexpectedly closes my session (log out) while I am working, and puts me back the login window. If I have terminal 1 logged with root and 2 logged with another user (without X), these ones are not logged out. For example, for the last three hours, it has happened five times. Other times, it leads to a reboot. So I have investigated: the UPS, but the behaviour is unchanged without it). the temperatures, but everything is fine (cpu, disks, video card). I have started to investigate also: the memory (partially tested - I have to run a full testyt next night). EDIT: totally tested and passed. My configuration is: Linux 2.6.37-tuxonice x86_64 Intel(R) Core(TM) i7 CPU 860 @ 2.80GHz. Any idea please?

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• ATI HD 5970 display

  - by user55406

  Hello everyone i'm a little worry about my graphic card. before I get into that I will tell you my system specs. I have intel dx58so mainboard, 6gb corsair xms ddr3 ram, intel i7 960 cpu, and ati hd 5970. I'm also using a coolmaster haf92 case. My OS is vista X64. Here is my issue when I type in dxdiag in (Start Search) and I look into display. I see in (approx total memory) 716mb graphic memory. The ati hd 5970 is a 2gb graphic card. Am I being stuipd or is there an issue.

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• Performance impact of running Linux in a virtual machine in Windows?

  - by vovick

  Hello, I'd like to know what performance impact I could expect running Linux in a virtual machine in Windows. The job I need Linux for is heavy and almost non-stop code compilation with GCC. Dual-boot doesn't look like a very attractive solution, so I'm counting on low VM overhead right now (10-20% would be fine for me, but 50% or more will be unacceptable). Did anyone try to measure the performance difference, are there any comparison tables? What virtual machine with the lowest overhead possible will you suggest? My host OS is Win7 and I've got a modern Core i7 with VT-x present. Thanks!

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• Site faster on 1 core/1GB ram than on 8 core/32GB ram wth?

  - by xtra

  Both sites are US based. I'm located in Europe. http://198.105.209.13/ <==== site that loads tons faster on 1 core and 1gb ram ONLY (Cent OS VPS) http://108.61.35.219/ <== site is located on my dedicated server with i7-3770 cpu and 32 gb ram (Windows) and is slow as hell Even if faster site is on linux it shouldn't make such a big difference in page load seriously. Does anyone know what could be a hiccup on the dedicated server? It's just unbelievable to me that site loads faster on 1 core cpu than on dedicated server. Note that site is pretty much only thing running on dedicated server. It has 1gbps connection.

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