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• How to load previous kernel via ssh?

  - by Aamir

  I work remotely on my work computer. I am also the root of the workstation that I am sharing with my colleague. Yesterday, I upgraded the kernel to 2.6.31-17 when asked by the update manager but refrained from restarting because I knew my NVIDIA and several other kernel modules wouldn't work. Unfortunately my colleague who is a linux noob restarted the machine and here I am :( I am thinking of changing the symlinks /initrd.img and /vmlinuz to the previous kernel image and use kexec. Please tell some better way to load the 2.6.31-16 release of kernel from ssh and not the grub boot menu. I am using Ubuntu Karmic.

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• Powershell Foreach-Object with if statement not working - help!

  - by Dmart

  I have a batch file that takes a computer name as its argument and will install Java JRE on it remotely. Now, Im trying to run this Powershell script to repeatedly call the batch file and install Java on any system that it finds without the latest version. It seems to run error-free, but the statements inside the if code block never seem to run - even when the if conditional test evaluates to true. Can anyone look at this script and point out what I'm possibly missing? I'm using the Quest AD cmdlets, and BSOnPosh module. Thank you. get-qadcomputer -sizelimit 0 -name mypc* -searchroot 'OU=MyComputers,DC=MyDomain,DC=lcl'| test-host -property name |ForEach-Object -process { $targnm = $_.name $tststr=reg query "\\$targnm\HKLM\SOFTWARE\JavaSoft\Java Runtime Environment" /v Java6FamilyVersion if(-not ($tststr | select-string -SimpleMatch '1.6.0_20')) { $mssg="Updating to JRE 6u20 on $targnm" Out-Host $mssg Out-File -filepath c:\install_jre_log.txt -inputobject $mssg -Append cmd /c \\server\apps\java\installjreremote.cmd $targnm } else { $mssg ="JRE 6u20 found on $targnm" Out-Host $mssg Out-File -filepath c:\install_jre_log.txt -inputobject $mssg -Append } }

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• VNC-like remote control over home network

  - by Widor

  I'm aware of how to use VNC to share screens or grant remote control of your machine over the internet by using VNC or one of the web-based "go to my pc" type services. If two computers are connected to a router (i.e. standard home network), is there an easier way of viewing and controlling one computer from the other? I'd like to avoid going outside the LAN, onto the internet, then back in if possible. Both machines are Windows XP, but I'm not looking for Remote Desktop by the way.

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• Long wait until POST...

  - by Wesley

  Here are the specs to put things into context: ECS P4VXASD2+ (V5.0) motherboard Intel Pentium 4 Northwood 2.8 GHz (512 KB L2, 533 MHz FSB) 2x 512 MB PC2100 DDR266 RAM 128 MB NVIDIA GeForce FX 5200 AGP WD Caviar SE 80 GB IDE HDD Gigabyte CD-RW drive OKIA 300W ATX PSU So, everytime I try to boot up this computer, it takes at least 10-15 seconds before it will POST. All my other machines will post within 1-2 seconds, but this one takes a particularly long time. I've read suggestions from a Google search to swap the CMOS battery, check BIOS settings, and double check CMOS jumper. Still after follow those, it takes a while to POST. What else could be causing a long delay before POSTing?

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• Reverse SCP over SSH connection

  - by pavpanchekha

  I pretty often need some file from some server when I'm on my laptop. But if I don't know where that file is, I have to ssh into the server, look around, exit, and then scp server:file .. If I'm working with my desktop and my server, both of which have static IPs, I can just SCP the file in reverse (scp desktop:~ file), but I can't do that for my laptop. Is there any nice way to SCP a file backwards over an SSH connection? So that the computer I connect to with SSH sends a file backwards to the client?

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• Is there a simple way to make my laptop always turn on muted? [closed]

  - by tehp

  Possible Duplicate: How to mute the sound output on Windows Start up? I carry a laptop around. Sometimes I'll open it up in meetings or other quiet settings. The speaker is interrupted by the windows startup noise or Pandora refreshing it's page and starting to play a song or some other random computer noise. Is there a simple way to mute the sound on startup/resume/whatever? Kind of like the BIOS option to turn on or off the Num Lock.

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• windows hosted networok on windows 8

  - by tanmaysingh

  my sister is using Acer laptop, that has an intel WLAN card and supports windows hosted network(checked in command prompt).Am using the basic way using netsh wlan command also, then am using netsh start wlan command.The hosted network gets created and it could b seen in "Network and Sharing Center" as the . I also went to Device manager, selected WLan card, made sure"allow this device to wake computer from sleep" is selected. Now I went to the newly created , clicked properties, and under sharing enabled allow this to be shared(but I am not able to select The name of the wifi my sis wants to share (in this case her college wifi name, LEts say QP4,Ethernet and Local Area connection are the only two option that are coming). Also the SSID name is not being shown in her mobile nor when I click the tower icon at the tray area,Any suggestions on what might be going wrong?She is using windows 8. Should I look for updated drivers? Her laptop is only 6 months old, i don't think the drivers are outdated. Any advice shall be appreciated.

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• Floating point undesirable in highly critical code?

  - by Kirt Undercoffer

  Question 11 in the Software Quality section of "IEEE Computer Society Real-World Software Engineering Problems", Naveda, Seidman, lists fp computation as undesirable because "the accuracy of the computations cannot be guaranteed". This is in the context of computing acceleration for an emergency braking system for a high speed train. This thinking seems to be invoking possible errors in small differences between measurements of a moving object but small differences at slow speeds aren't a problem (or shouldn't be), small differences between two measurements at high speed are irrelevant - can there be a problem with small roundoff errors during deceleration for an emergency braking system? This problem has been observed with airplane braking systems resulting in hydroplaning but could this actually happen in the context of a high speed train? The concern about fp errors seems to not be well-founded in this context. Any insight? The fp is used for acceleration so perhaps the concern is inching over a speed limit? But fp should be just fine if they use a double in whatever implementation language. The actual problem in the text states: During the inspection of the code for the emergency braking system of a new high speed train (a highly critical, real-time application), the review team identifies several characteristics of the code. Which of these characteristics are generally viewed as undesirable? The code contains three recursive functions (well that one is obvious). The computation of acceleration uses floating point arithmetic. All other computations use integer arithmetic. The code contains one linked list that uses dynamic memory allocation (second obvious problem). All inputs are checked to determine that they are within expected bounds before they are used.

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• Ubuntu Volume overriding settings set in Alsamixer

  - by Hayek

  Problem: How do I "lock in" the volume I set through alsamixer? I'm running Ubuntu 9.10. I adjusted the bass/treble columns in alsamixer but changing the system volume resets them all back to 100% I did save the settings by running alsactl store but everything is reset once I touch Ubuntu's volume icon in the top menu bar. This is rather painful because the computer is hooked up to a 650watt system with a massive subwoofer. As much as I enjoy my music, there's no need to have the walls vibrate :) What can I do to prevent Ubuntu from overriding the settings?

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• Dualboot Asus n56v (ubuntu / win 7 x64) - ubuntu doesn't detect partition table made by windows

  - by user76439

  I have an Asus n56v and I've got troubles installing Ubuntu 12.04 x64. I already have installed Windows 7 x64! The hard drive is: Hitachi HTS547575A9E384 My problem: The installation program doesn't recognize the already existing partitions and is offering only options where there are partitions. Can someone help me out? Is this an ACPI/IDE conflict, missing driver or conflict with Windows 7? (I'm not an expert on Linux, only working sometimes with it.) I now tried out some options concerning EFI with a GTP-table. Everything worked but I wasn't able to fix a dual boot (Windows boot loader) nor with GRUB2. The laptop is still having a BIOS, but is able to boot DVDs/CDs in EFI-mode. Now I try to avoid EFI and GTP using the old windows MBR style. I reinstalled Windows, so far no problem. When I want to try to install Ubuntu, it doesn't detect the already existing partition table. It is just showing me an empty space for the whole disk. Other threads like Ubuntu 12.04 does not see windows already install on my computer (dual installation) don't help me out. os-prober shows me a correct result. I don't know how to deal with gdisk as shown in Installer doesn't detect existing partition table/windows 7 partition. I have 750GB for the whole disk. I'm using: 90GB for Windows reserved partition + system partition, 500GB for data and the rest should be for SWAP and linux-system. How can I make Ubuntu detect the partition table?

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• tcp handshake failed.client send rst (after syn-ack). can any one advice?

  - by user1495181

  architecture: 2 linux computer connected . on the second (192.168.1.1) one run apache server . I have a small program that take tcp packets from nfqueue change the dst ip to 192.168.1.1 in case that the dst ip is 192.168.1.2 (i know that i can do it with iptables , but my program will do more things in the future), fix check sum and return to the queue. if i call to telnet 192.168.1.1 , means that my program dosnt need to do any manipulation, handshake is OK. If i call to telnet 192.168.1.2 , my program change the dest. server get the syn and return syn-ack, but right after getting the syn-ack the client send rst. Can anyone advice? wireshark of the telnet tcpdump of the telenet above

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• System in low graphics, deleted linux, grub rescue, can't access windows

  - by First timer

  So I'm pretty new to Ubuntu but I managed to install it with no big problems on both my desktop and netbook. When I installed it on my brother's netbook everything went horribly wrong and now I fear the system is close to beyond repair. The problem was first that it said it did not have any space left (seemed ridiculous since it had a lot). Then Ubuntu began booting into a "System is running in low graphics mode error" which I then tried to fix, using all the tips I could find in here but nothing helped. I think the graphics error and lack of space might have been related but I can't be sure. Finally I gave up repairing Ubuntu and went for a reinstall. Shouldn't have done that! I read that I should simply open Ubuntu through a live usb and choose GParted to delete the Linux partitions so I did and rebooted accordingly. Next, I was to install Ubuntu but now I am only given the option to wipe the whole disk for Ubuntu, not install along with windows 7. If I access GParted I can still see the ntfs partitions that hold windows 7 (there are 2: one labeled RECOVERY and another labeled OS and boot) so why can't I access them? Btw. the OS and boot has a little red mark with a warning that 1 cluster is referenced to multiple times, don't know what that means. If I boot without the live usb I am sent directly into a grub rescue "black screen of the computer will follow no orders". Please, I know that the easiest might be to simply wipe the whole thing clean but there are important files and programs on windows 7. Is there a way to just access windows? It is a dell inspiron 1018 mini netbook, so I have no cd input and no windows 7 installation cd.

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• Two users using the same same user profile while not in a domain.

  - by Scott Chamberlain

  I have a windows server 2003 acting as a terminal server, this computer is not a member of any domain. We demo our product on the server by creating a user account. The person logs in uses the demo for a few weeks and when they are done we delete the user account. However every time we do this it creates a new folder in C:\Documents and Settings\. I know with domains you can have many users point at one profile and make it read only so all changes are dumped afterwords, but is there a way to do that when the machine is not on a domain? I would really like it if I didn't have to remote in and clean up the folders every time.

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• Plugged in, not charging&ndash;Windows 7

  - by Kelly Jones

  Just a quick post on something I ran into lately with my Dell Precision M4500 laptop (monster laptop!).  I noticed the little icon in the system tray for the power options was stating that it was “plugged in, not charging”.  I don’t know why it was stating this, but I quickly found a fix for it on the net. I found the fix in this forum on CNET.  Here’s the fix: In order to correct problems with the battery's power management software, follow the steps below. 1. Click Start and type device in the search field, then select Device Manager . 2. Expand the Batteries category. 3. Under the Batteries category, right-click the Microsoft ACPI Compliant Control Method Battery listing, and select Uninstall . WARNING: Do not remove the Microsoft AC Adapter driver or any other ACPI compliant driver. 4. On the Device Manager taskbar, click Scan for hardware changes . Alternately, select Action > Scan for hardware changes . Windows will scan your computer for hardware that doesn't have drivers installed, and will install the drivers needed to manage your battery's power. The notebook should now indicate that the battery is charging.   And it did work.

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• Step 2 of instructions is not clear to me

  - by Albert Frye

  I want to make a bootable USB stick. I run the UUI. I see the instructions on this site: http://www.ubuntu.com/download/desktop/create-a-usb-stick-on-windows Step 1 says: Select "Ubuntu Desktop Edition" from the dropdown list Okay, so the actual title of the drop down box is: Select a "Linux Distribution" from the dropdown to put on your USB I am pretty new to computers. 67 years old. Live alone. Bought my first computer 3 months ago. So I will have to assume that when the instructions say "Ubuntu Desktop Edition", that means the same thing as "Linux Distribution". Okay, No big leap there. So far, so good . . . . . . . So I pick the very first selection: Ubuntu 13.10 Desktop i386 I'm not sure why there are so many choices, but I'm guessing I'm pretty safe with the first one. It's for a Toshiba Satellite laptop 64 bit Windows 7. Okay, now for step 2: The instructions say: Click 'Browse' and open the downloaded ISO file. The message in the window just before the "Browse" button says: Browse to your ubuntu-13.10*desktop*i386.iso -- Okay, so where's that file? So I click "Browse" and start looking for that file. It is nowhere to be found. So where the heck is it?

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• How do I determine which HD is involved in the Event Viewer?

  - by Rod

  My PC apparently crashed before I came home from work (so my daugthers tell me; they rebooted it). The first thing I did, after it came up, was got into the Event Viewer to see what it said. Several hours before they rebooted it, there's a message in the event viewer that says: The driver detected a controller error on \Device\Harddisk5\DR5 I've no idea what that means. I got into Computer Manager, to take a look at the disks on my machine. There's only 1 hard drive, and a few slots for microSD, etc, but none of them are labeled "Harddisk5", nor is there anything there labeled "DR5". How do I determine what, if anything, those are? Could they be USB drives that my daughters used?

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• Is it possible to use different keyboards for different applications?

  - by Paperflyer

  What I would like is this: I would have two keyboards. One of them is "connected" to Matlab, the other is "connected" to my text editor of choice. This way, I could edit some script and still test some commands in Matlab without having to constantly switch between the applications. Basically, I would want to have an additional keyboard attached to my computer that solely controlled Matlab. That would be awesome! Is there any way to do this? Preferably with OSX, but it would be fun on Windows or Linux, too.

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• To sell or give for free

  - by QAH

  Hello everyone! I am currently making a game that I was originally planning to sell. It is a simple 2D arcade style game for the PC. I've seen many indie games become popular and generate revenue from advertisements, but the game itself remains free. I need some advice on whether or not I should sell my game, release it for free with advertisements, or ask for donations and keep the game free. I feel that my game is fun, but of course the graphics aren't tip top because I am a programmer, not an artist. I just take screenshots of 3D models I get from Turbosquid and crop around it to make a sprite. Also, and I could be very wrong about this, it seems that there are more legal issues surrounding selling a game than making it free and generating revenue from advertisement, or asking for donations. If I am wrong, someone please correct me. Also, I am very interested in generating some revenue for my work, but that isn't at the very top of my list. I am in my last year of high school, soon to be going to college, and I am going to major in computer science/software engineering. So I am trying to gain some preliminary experience at home by coding stuff every day. One way of getting this experience is by making this game. So what do you think? What route should I take? What has worked well with other indie games? Thanks in advance.

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• DSL to web connectivity is often lost

  - by broiyan

  I am experiencing a frequent web connectivity problem via a DSL modem. The problem usually shows up as a reload later screen inside of Google Chrome, as illustrated. My DSL service was fine for the first 2 months, but in the most recent month this problem has been occurring. I have this problem several times a day. A few weeks ago, I used to power cycle (off then on) the DSL modem but this usually did not solve the problem. However, in recent days, the power cycle does seem to fix the problem. When the problem occurs, the modem lights do not look unusual. All the lights are green or flashing green. This problem happens regardless of whether I am using ethernet or WiFi for the last few meters between the DSL modem and the computer. What is the likely cause? How can I help the phone company solve this? Their staff are not very effective at troubleshooting this.

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• Repeated Reporting Services Login issue when deploying through BIDS to a remote server

  - by Richard Edwards

  We are having a problem deploying a reporting services report to a sql reporting services computer that is configured in SharePoint Integrated mode. I can successfully deploy to the SharePoint document libraries set up for reports and data connections if I do it locally from the box that SharePoint and Reporting Services are deployed on. If I try and do the same thing with the exact same deployment properties from a remote box, I constantly get a Reporting Services Login dialog popping up and no combination of domain\username and password will work. I've even tried the machines local admin account and still nothing. Any ideas where to start looking?

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• Hosting files with support for file tagging / keywords

  - by Zev Chonoles

  I have a large (approx. 25GB) collection of files I would like to host online for people to view or download. I have a spare computer I can use as a dedicated server for these files. I'm looking for a method of, or piece of software for, hosting my files where I can assign tags or keywords to the files, and people viewing my files online can search the collection via the tags. By way of approximate solutions I've found so far, I see that there is software such as Collectorz.com or Readerware for creating databases of one's books / music / movies, and these databases can be searched by tags or keywords, and the databases can be made available and searchable online; this would suit my purposes except that my files are not necessarily books, music, or movies, and I want the files themselves accessible online, not a database describing my files. A commercially-available solution like the ones above would be acceptable, but I'd prefer to have the whole setup under my control (i.e. I'd like to either implement it by hand, or use commercial software that doesn't rely on using the company's servers, paying them a continued fee, etc.). The current extent of my internet experience is designing a few Google Sites, so I know there's a fair chance I won't understand the answers I receive, but I'm always happy to have a summer project :)

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• Second Monitor Detected, but not receiving a signal after upgrading to 12.04

  - by user62458

  After I upgraded to 12.04, my second monitor is detected (in display settings), but will not power on. I have scoured the Internet and forums for a solution and I can't find anything. I have found a couple people with the same problem, but never a solution for it. I am no expert, but I'm certainly not a noob. My computer uses AMD Radeon 6250 graphics, but I do NOT want to use the proprietary graphics drivers. They refuse to work properly with my second monitor (they ATI drivers will only mirror screens, and I've done everything to try to fix it, and I DON't want mirrored screens) Not to mention that the default open-source video drivers seem to work much better than the proprietary anyway! Again, Ubuntu's default video drivers work fine, and they even DETECT the second monitor (Dell 19'). I can drag stuff off the screen and put it on the 'space' of the second monitor and even a screen-shot shows that there are two monitors active; but the monitor is OFF. It will not power on. It goes into 'power-save' mode because it is not receiving a signal. For some reason it is not getting the signal to power on, even though Ubuntu thinks the monitor is working properly. I had this working fine on my Sony VAIO yesterday (with Radeon graphics/default Ubuntu video drivers). I upgraded to a Samsung Series 3 and now I have this issue. I can't for the life of me figure out why the monitor is connected, detected and I have screen space for the monitor, but the screen won't turn on! XRANDR Output: Screen 0: minimum 320 x 200, current 1366 x 768, maximum 8192 x 8192 VGA-0 connected (normal left inverted right x axis y axis) 1440x900 59.9 + 75.0 1280x1024 75.0 60.0 1152x864 75.0 1024x768 75.1 70.1 60.0 832x624 74.6 800x600 72.2 75.0 60.3 56.2 640x480 72.8 75.0 66.7 60.0 720x400 70.1 LVDS connected 1366x768+0+0 (normal left inverted right x axis y axis) 344mm x 194mm 1366x768 60.1*+ 1280x720 59.9 1152x768 59.8 1024x768 59.9 800x600 59.9 848x480 59.7 720x480 59.7 640x480 59.4 HDMI-0 disconnected (normal left inverted right x axis y axis)

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• No sound after upgrading to Ubuntu 11.10 from win7

  - by Tilman

  just as a prefix to my question, i'd like to note that i'm just now entering the world of Linux (unless you count my android, but that's a very different experience...) i have two computers now that run Ubuntu 11.10, the first of which i've had very little problems with, aside from figuring out the basics. the second, from which i'm writing this question, has (up to this point) only had one problem.... no sound. i've read a couple questions similiar and found little help as the component catalog doesn't have my computer listed. (in fact i'm not suprised this is a pos i had my mom grab from her work before they officially closed the doors behind them) had perfect sound before hand, and no sound now. sudo lspci -v brings up 00:1b.0 Audio device: Intel Corporation N10/ICH 7 Family High Definition Audio Controller (rev 01) Subsystem: Intel Corporation Device d608 Flags: bus master, fast devsel, latency 0, IRQ 45 Memory at ff980000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [100] Virtual Channel Capabilities: [130] Root Complex Link Kernel driver in use: HDA Intel Kernel modules: snd-hda-intel any help would be greatly appreciated, me and my gf just wanna watch a damn movie lol

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• Vista: "Change date and time" causes permissions error

  - by alexsome

  I double-click on the time in the bottom right to open the date and time panel. Then I click on the "Change date and time..." button (which has a shield) and I get the UAC dialog. I click "Continue", then am presented with an error that reads: Unable to continue You do not have permission to perform this task. Please contact your computer administrator for help. I will mention I have Comodo installed, but I have turned it off to test this out and I get the same results. All that I've found while googling were suggestions to turn UAC off, but I am interested in learning what the actual problem is. Thanks in advance.

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• Poor CPU usage under Ubuntu

  - by remek

  Hello, I just upgraded from Ubuntu 9.10 to Ubuntu 10.04 and I am now experiencing a strange problem. My computer has a quad-core processor, and when I am running several processes simultaneously, none of the cores is fully used. Before the upgrade, when I was running 4 processes, each of them was using 100% CPU (I could see that with the 'top' command). But now, CPU usage oscillates and is always pretty low. Has anybody an idea about this problem? Is it due to Ubuntu or to the program I am running? Thank you very much in advance for your help! Best, remek

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