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• Changing the default boot option without losing the boot menu

  - by hvd

  I've had a working multi-boot setup with the Windows boot loader, containing menu items for two Windows 7 systems, and one for Grub. Grub in turn contains multiple menu items, but I think that's not relevant here. I've upgraded one system to Windows 8. When I now set a different system as the default, I lose the boot menu, and I lose the possibility of booting into the other systems. I've set Windows 7 as the default, rebooted, and get Windows 7, but I don't get to choose which system to boot into. I can run its own bcdedit to change the default back to Windows 8, and another reboot shows the boot menu again, but how can I avoid defaulting to Windows 8? Here are my current boot settings, is there anything that is misconfigured? C:\WINDOWS\system32>bcdedit Windows Boot Manager -------------------- identifier {bootmgr} device partition=F: description Windows Boot Manager locale nl-NL inherit {globalsettings} integrityservices Enable default {current} resumeobject {2f8b77f0-a30b-11e1-a9c6-a4bd8d37f662} displayorder {current} {2f8b77e3-a30b-11e1-a9c6-a4bd8d37f662} {2f8b77ee-a30b-11e1-a9c6-a4bd8d37f662} toolsdisplayorder {memdiag} timeout 30 Windows Boot Loader ------------------- identifier {current} device partition=C: path \WINDOWS\system32\winload.exe description Windows 8 locale nl-NL inherit {bootloadersettings} integrityservices Enable recoveryenabled No allowedinmemorysettings 0x15000075 osdevice partition=C: systemroot \WINDOWS resumeobject {2f8b77f0-a30b-11e1-a9c6-a4bd8d37f662} nx OptIn bootmenupolicy Standard Windows Boot Loader ------------------- identifier {2f8b77e3-a30b-11e1-a9c6-a4bd8d37f662} device partition=D: path \Windows\system32\winload.exe description Windows 7 locale nl-NL osdevice partition=D: systemroot \Windows resumeobject {59616f59-a2ba-11e1-b73a-806e6f6e6963} nx OptIn pae Default bootmenupolicy Standard hypervisorlaunchtype Auto detecthal Yes sos No debug No Real-mode Boot Sector --------------------- identifier {2f8b77ee-a30b-11e1-a9c6-a4bd8d37f662} device partition=C: path \grub\winloader\grub.boot description Grub 2

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• Borked ubuntu uninstall - need to delete boot partition (i think)

  - by Max Williams

  I just got a new pc laptop with windows 7 and wanted to install Ubuntu on it. Which i did, no problem there, by downloading the installer, burning it to dvd then booting off the dvd and installing. Then, i realised that the new Ubuntu 12.04 uses the Unity desktop, which i immediately disliked, and after some research, began to hate. So, i decided (after a little googling) to install Linux Mint instead. So, thinking i'd better start from scratch, i went to the Windows 7 disk manager and wiped the Ubuntu partition that had been created. Now, when i start up, i get an error from grub, the ubuntu boot manager: error: unknown filesystem grub rescue> _ and a blinking cursor where i can enter commands. I suspect that what i've done is deleted the main ubuntu partition but NOT deleted another partition which is a boot partition, or something like that? Can anyone tell me how i can rescue or unbork this? I'd like to either a) get back to my original windows-only setup OR b) install linux mint off dvd (which i have), into the empty partition, fixing any grub confusion in the process. Any suggestions? Thanks, max BTW please don't answer if you're just going to tell me to stick with 12.04, or install a different distro or something. I definitely want Mint and just want to fix this mess - thanks :)

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• Mesh Networked servers via vpn

  - by microspino

  I got a design idea and I would like to have some advice from SF about It. I have 5 customers with small real-estate databases. I've built for them a desktop app and now they would like to merge their database to share their data. I don't want to centralize everything in one place nor I want to do maintenance for servers. They told me also, that all of them in their offices, have little servers and maintenance guys available. Although everything seems suitable for web application, I had the idea to experiment something new: Any customer small-server wild be connected to the others in a sort of mesh network without a single point of failure and through VPNs. If one of the servers went down the customers could still connect to their databases from one of the other mesh networked servers instead of from the local one that is down. During normal operations all the servers sync the db with the others through VPNs. I can accept a half-day timing window of NON synched data, in other words, since I don't need real time synchronization, the server don't have to always stay in synch. I can migrate my data over to other Non-Sql technologies like CouchDB or Redis or whatever you suggest. As you can see I don't have a lot of constraints and although I could go with a web application I would like to delegate and decentralize support, data-privacy and management, as more as I can to my customers offices. Is that a crazy idea? Do you know If something similar exist? Which technology would you suggest?

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• Batch Script to Trim lines in text to first 30 or 50 characters only

  - by SuperUserMan

  I am now new to scripts but i find it really difficult understanding "for" command (especially with that tokens and delimiters etc) . Saying so, i think that for command can be used to do what i am doing. If its not and there is an easier way, ignore my ignorance :( Say i have multiple lines in a text file abc.txt with each line starting and ending with " (quotes) E.g. a file of 3 lines "hey what is going on @mike220. I am working on your car. Its engine is in very bad condition" "Because if you knew, you'd get shredded and do it with certainty" "@honey220 Do you know someone who has busted their ass on a diet only for results to come to a screeching halt after a few weeks" How can i trim each line, within the quotes, to a Fixed length say 30 or 50 or 100 characters (including spaces) I want to enter the number of character in batch and it can trim accordingly and produce a file def.txt with trimmed lines within quotes. Say i enter 50, results of above example should be "hey what is going on @mike220. I am working on you" "Because if you knew, you'd get shredded and do it" "@honey220 Do you know someone who has busted their" Thanks P.S. if you use For command, kindly please explain the command. EDIT: Though the answer provided worked, there is an issue with non english text. I am getting garbled text in Output file for non english text in input file . Any help @barlop here is the nonenglish text ( 1 line) "???? ?? ???? ?? ???? ???? ??? ?????? ???"

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• DNS lookup fails when with all the MAC workstations

  - by user39564

  Hi, I am having this insane problem. We are mac-heavy users. Around 10 workstations, one Xserve server, two windows workstation and one Linux (me). Last year I added an A record to our domain's DNS. However we had to change that a few months ago to a new IP. But all the Mac workstations fail to resolve the proper DNS and they still resolve to the old IP, even after 2 months. On both the windows workstation and my linux box a simple nslookup resolves to proper IP. However, on ALL the mac workstation, dig and nslookup report the old IP address. From my linux workstation: jp@lo:~$ nslookup - 208.67.222.222 client.xyz.com Server: 208.67.222.222 Address: 208.67.222.222#53 Non-authoritative answer: Name: client.xyz.com Address: 68.71.40.xx But when I am trying the exact same command from any Mac workstation, I get the old IP: $ nslookup - 208.67.222.222 client.xyz.com Server: 208.67.222.222 Address: 208.67.222.222#53 Non-authoritative answer: Name: client.xyz.com Address: 98.143.155.xx The strange thing is that this only happens in our internal network. No problem from home nor from another server. I did try to flush the DNS, don't worry. It did not help. I am starting to wonder if my router (OpenWRT) or Mac OS X Server is not in some way spoofing the DNS request and thus acting as a cache. Any suggestions/comments would be grateful. Thank you, JP

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• Unix apt-get doesnt download from nfs locaiton

  - by pravesh

  I have switched to unix from last 3 months and trying to understand install process and in particular apt-get. I am able to successfully install and download the packages when I configure my repository on http location in /etc/apt/sources.list file. e.g. deb http://web.myspqce.com/u/eng/rose/debian-mirror-squeeze-amd64/mirror/ftp.us.debian.org/debian/ squeeze main contrib non-free This command will download(/var/cache/apt/archive) and install the package when i use apt-get install When I change the source location to file instead of http(nfs mount point), the package is getting installed but NOT getting downloaded in /var/cache/apt/archive. deb file:/deb_repository/debian-mirror-squeeze-amd64/mirror/ftp.us.debian.org/debian/ squeeze main contrib non-free Please let me know if there is any configuration or settings that i have to make to let apt-get to both download and install package when i use (nfs)file:/ instead of http:/ in sources.list. To achieve this, I can use apt-get --downlaod-only and then use apt-get install for both download and install in two separate calls, but I want to know why package is not getting downloaded with apt-get install but only getting installed when used with file:/ in sources.list

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• System Center 2012 VMM UI is very slow

  - by Grant

  I've recently setup system center 2012 a new server 2008 r2 server which I'm using for virtual machines. Everything seems to be working fine, and the virtual machines are nice and fast. But the Virtual Machine Manager interface is always excruciatingly slow. Sometimes taking up to 15 seconds moving between screens. It's very frustrating trying to use it when a task that just involves a couple clicks ends up taking several minutes. Pages that have a lot of form fields seem to take the longest to load - such as the page to change hardware settings of a virtual machine. Is this just normal performance for VMM? If not, where can I look to find what is slowing it down. Nothing else on the system seems to suffer. I can load and use Hyper-V manager with no noticable slowness. Even programs like event viewer that are usually rather slow seem to load fairly fast. Only the system center programs seem slow. Server is a Dell R710, 2x16 core opteron 6274 processors, 96GB RAM. OS drive is 2x500GB 7.2k RPM SAS drives in RAID1 (opted for the less expensive 7.2k drives since pretty much everything is stored on the SAN). Am I just being impatient? Does anyone else use VMM 2012 and find it slow?

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• Linux security: The dangers of executing malignant code as a standard user

  - by AndreasT

  Slipping some (non-root) user a piece of malignant code that he or she executes might be considered as one of the highest security breaches possible. (The only higher I can see is actually accessing the root user) What can an attacker effectively do when he/she gets a standard, (let's say a normal Ubuntu user) to execute code? Where would an attacker go from there? What would that piece of code do? Let's say that the user is not stupid enough to be lured into entering the root/sudo password into a form/program she doesn't know. Only software from trusted sources is installed. The way I see it there is not really much one could do, is there? Addition: I partially ask this because I am thinking of granting some people shell (non-root) access to my server. They should be able to have normal access to programs. I want them to be able to compile programs with gcc. So there will definitely be arbitrary code run in user-space...

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• Macros in Excel 2010 hangs

  - by Ahmad

  I have a spreadsheet with several macros. Generally, when previously using Excel 2007, a user clicks a button and everything works as expected (calculations, some email sending & file I/O). Typically, the expected run-time is about 90 seconds. The spreadsheet is a xlsm file created with Excel 2007. With Excel 2010 however, the same user process results in a non-responsive excel and forces us to kill excel from the task manager. Some note that I have gathered so far in trying to debug this issue: When monitoring CPU usage, it seems that Excel does start the macro. CPU usage increases as expected to about 47% for a few seconds. Excel.exe than drops to 0% usage and I now have a non-responsive Excel (even after 1 hour). If I set debug break points across modules and different functions and step through the code (after clicking the button) , the process works as expected albeit much slower. To add, there were no exceptions. I am at a complete loss as to what the issue may be. I initially thought it may be the add in that is being used but that was debunked by point 2. This seems to be a very odd situation. I can provide more information if required, but I'm at wits end about the root cause could be. I need help in diagnosing and resolving this issue.

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• A little guidance setting up FTP server authentication on Windows Server 2008 R2 standard?

  - by Ropstah

  I have a (clean) server running Windows Server 2008 R2 standard. I would just like to use it for serving a website and a FTP server through IIS. IIS is installed and serves my website propery. I have now added a FTP site but when I try to logon using my user/pass i get the following error: 530 User cannot login From this article (http://support.microsoft.com/kb/200475) I understand that these four causes can be pointed out: The Allow only anonymous connections security setting has been turned on in the Microsoft Management Console (MMC). Not the case The username does not have the Log on locally permission in User Manager. The user is in the Users group, however I'm not able to logon through RDP. I tried configuring this by following this article through GPMC however this only works when I'm logged in as a domain user on a domain controller which I'm not: I'm logged in as administrator The username does not have the Access this computer from the network permission in User Manager. Not sure what this implies...? The Domain Name was not specified together with the username (in the form of DOMAIN\username). Tried adding the server name: server\username, not working... I am an absolute server noob and I'd just like to be able to connect through FTP... Any guidance is highly appreciated!

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• How can I install git on RHEL 6?

  - by JR.Xyza

  I'm trying to install Git on a RHEL6 development server, I have experience with Ubuntu but this is my first time working with RHEL (I'm a developer trying to fill in for a recently departed Linux Sysadmin). I've set up two additional repos (EPEL and IUS) for other packages needed for a Magento install. Output of yum repolist: [root@box]# yum repolist Loaded plugins: product-id, security, subscription-manager Updating certificate-based repositories. repo id repo name status epel Extra Packages for Enterprise Linux 6 - x86_64 7,841 ius IUS for RHEL 6Server - x86_64 135 Most of what I've read indicates a simple 'yum install git' should work with EPEL enabled, but I get the dreaded [root@box]# yum install git Loaded plugins: product-id, security, subscription-manager Updating certificate-based repositories. Setting up Install Process No package git available. Error: Nothing to do Same goes for git-daemon, etc. I've tracked down a number of git RPMs such as this one at repoforge but they require a train of dependencies that seems to never end. I've also toyed with compiling it manually but the rabbit hole to get make working seems to go even deeper. I'm convinced there's a simple oversight somewhere keeping me from being able to install from the EPEL repo, but I'm a rookie at all this. Thanks in advance for help/pointers/additional resources.

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• Booting an Asus EeePC from a LiveCD USB stick

  - by Bryan

  I have two identical Asus EeePC netbooks that are both installed with Ubuntu. One of them was sitting on the closet shelf and the battery went completely dead. When I charged the battery and tried to boot the it, I got the "No init found" error. In trying to follow the suggested way to fix it posted here, I used the Startup Disk Creator on my Ubuntu 11.10 desktop machine to create a USB stick with a bootable Ubuntu 11.10 live CD on it (the netbook doesn't have a CD drive). I plugged the USB stick into the netbook with the init issues, went into the BIOS and selected the USB stick as the 1st choice to boot from, and did a hard restart. It then just stuck at the flashing underscore. Not knowing why it wasn't working, I tried booting my working netbook from the USB stick. When I got into the BIOS on the working netbook, I noticed the description in the boot order section for the USB device was different. On the non-working netbook, the description was SWISSBIT (the name of the USB stick) but on the working netbook it was just "Rem. Drive". I also noticed on the working netbook there was an additional option under the bootable order section that allowed me to choose which hard drive to boot from. This section showed two hard drives, one of them being my USB stick. So, rather than changing the device boot order, I selected the USB stick as the hard drive to boot from first and it worked like a champ - I was able to boot into the LiveCD on the USB stick. Seems to me the working netbook is seeing the LiveCD USB stick as a hard drive, where-as the non-working netbook is seeing it as a plain ol' USB stick. The BIOS is the exact same version on both netbooks... any idea why it works on one and not on the other?

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• Why database partitioning didn't work? Extract from thedailywtf.com

  - by questzen

  Original link. http://thedailywtf.com/Articles/The-Certified-DBA.aspx. Article summary: The DBA suggests an approach involving rigorous partitioning, 10 partitions per disk (3 actual disks and 3 raid). The stats show that the performance is non-optimal. Then the DBA suggests an alternative of 1 partition per disk (with more added disks). This also fails. The sys-admin then sets up a single disk, single partition and saves the day. The size of disks was not mentioned but given today,s typical disk sizes (of the order of 100 GB), the partitions ; would be huge, it surprises me that a single disk with all partitions outperformed. Initially I suspect that the data was segregated and hence faster reads. But how come the performance didn't degrade as time went by with all the inserts and updates happening? Saw this on reddit, but the explanation was by far spindle/platter centered. There was no mention in the article about this. Is there any other reason? I can only guess that the tables were using a incorrect hash distribution causing non-uniform allocation across disks (wrong partitioning); this would increase fetch times. Any thoughts?

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• Web based KVM management for Ubuntu

  - by Tim

  We've got a single Ubuntu 9.10 root server on which we want to run multiple KVM virtual machines. To administer these virtual machines I'd like a web based KVM management tool, but I don't know which one to choose from the list of tools mentioned on linux-kvm.org. I've used virsh & virt-manager on my desktop, but would like a web interface for the server. I tested ConVirt on my desktop, but it failed to pickup KVM machines from virsh / virt-manager, and I could not get KVM virtual machine import to work (only Xen). oVirt looks good, but I can't find out if and how I can install it on Ubuntu 9.10.. (And I'd really rather not waste another few days on testing stuff that might not work in the end.) Can anyone recommend any good web based KVM management tools that are easy to install on Ubuntu 9.10? I'm looking for something that will also allow me to run other services like apache and postgresql besides hosting virtual machines, so preferably fairly lightweight & no dedicated OS installs. We don't need any professional clustering / migration or anything, just something that will let us create, start, inspect, administer & stop virtual machines from a web page. Best regards, Tim Update: Anyone have any suggestions? It's awfully quiet here..

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• Managing SharePoint permissions via Active Directory?

  - by rgmatthes

  My company has thousands of employees organized thoroughly via Active Directory. I have confidence in the accuracy of the Department and Title information displayed in the user profiles. I'm helping to put up a brand new SharePoint 2007 site, and I contacted IT about managing the site's permissions through AD Groups. The goal is to have the site automatically assign read/write/contribute/whatever permissions based on the information in AD. For example, we could create an AD Group called "Managers" that would contain anyone with the "Manager" title in their AD user profile. I would have SharePoint tap into this AD Group to mass assign permissions if I knew all managers would need a certain level of access (read/write/contribute/whatever). Then if a manager joins the company or leaves it, the group is automatically updated (provided AD gets updated, of course). My IT rep called back and said it couldn't be done. This seems like a pretty straightforward business requirement, and one of the huge benefits of having Active Directory, but maybe I'm mistaken. Could anyone shed some light on this? A) Is it possible to use dynamically-updated AD Groups when assigning permissions via SharePoint? (Does anyone know of a guide I could show my doubtful IT rep?) B) Is there a "best practice" way to go about this? I've read some debate on whether SharePoint Groups or AD Groups are the way to go. My main concern is dynamic updating. C) If this isn't available out of the box, can someone recommend third-party software that will provide the functionality I'm looking for? A big thanks to anyone who can help me out!!

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• How to disable monitor "sleep" on Ubuntu without access to X?

  - by exhuma

  I just received a CuBox (basically a tiny ARM based PC). It comes pre-installed with Ubuntu, and I did not (yet) want to fiddle with the OS itself. My aim is to have it automaticall start a browser in fullscrren upon boot. Using chromium with the "--kiosk" flag works perfectly in that regard. But now I have the problem that the screen turns off after a certain time. I managed to turn off the screen saver using: gconftool-2 -s /apps/gnome-screensaver/idle_activation_enabled --type=bool false And tried to turn off the power management using: gconftool-2 -s /apps/gnome-power-manager/ac_sleep_display --type=int 0 and gconftool-2 -s /apps/gnome-power-manager/timeout/sleep_display_ac --type=int 0 Neither of the power-management commands worked. Theoretically I could hook up a mouse and keyboard and configure it manually. But I want to learn how to do it over the console. The box will eventually be only reachable via SSH. So I'd like to be able to trouble-shoot it later. I don't quite know where to look for. I searched the gconf tree using gconftool-2 -S for anything related to the terms power, idle and sleep but did not find anything promising. Maybe it's not even gconf related... Any ideas what else I could look for?

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• Storing Windows Updates for reuse

  - by Saiyine

  At work we update lots of computers using Windows Update. Windows XP and 7 all day long, rarely some Vista. We do it through a corporate proxy, as connecting them to a domain to build a Wsus server is out of the question, so we download about two gigabytes a day of the very same updates everyday. I've tried WSUS Offline. It's pretty complete but when it finishes it's common to be still missing hundreds of megabytes of updates, because its intention is not to fully update a system but to install the critical updates, as the developers explain in the forums. Now I'm trying with Autoupdater. It's far worse, with poor capabilities for non-English Windows XP, but at least it gives the option to install non critical updates in Windows 7. It still misses hundres of megabytes of updates after fully updating the system. And finally, both doesn't install the driver related updates of Windows 7, so they at most save us a couple of hundreds of megabytes and a reboot (with the associated login to the computer and to the proxy) out of three or four. So, is it possible to somewhat extract the installed updates in a Windows 7 system and not having to download the same updates again and again at least with machines with the same hardware? Or even better, a generic package with all the updates?

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• Enable bitlocker an save key to share

  - by user273694

  I have searched all over the web but cannot find a complete answer to this: How to enable Bitlocker on a laptop with TPM, and store a file with the Bitlocker recovery key and TPM password by USING THE manage-bde command line tool. The file should be the same as when created in the Bitlocker manager UI. I DO NOT want to save to AD. The same question was asked here but was not answered correctly. The goal is to write a script to be used with an endpoint manager. I have tried the following: manage-bde -on C: Works fine, but does not create or save a key. manage-bde -on C: -rk C:\myfolder\ and manage-bde -on C: -RecoveryKey C:\myfolder\ -rp The output from the last two methods state that a key has been saved to c:\myfolder and so on, but that is not the case. It also says that I have to: Save the password in a secure location Insert a USB flash drive with an external key file into the computer. Restart and run hardware test type "manage-bde -status" to check if the hardware test succeeded After a restart, I get an error saying that Bitlocker could not be enabled because the bitlocker startup key or recovery kpassword cannot be found on the USB device.... C: was not encrypted. Why am I asked to insert a USB?? I simply want to encrypt the hard drive and save the recovery information to a file automatically. Is that too much to ask? Help please!

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• Grayed-Out Sleep and Hibernate Options on Windows 7 After Updating Graphics Driver

  - by Maxim Zaslavsky

  I have a Gateway M275 Tablet PC, on which I've installed Windows 7 Ultimate. The laptop is quite old, so there aren't any Win7 drivers for it, not to mention any Vista drivers. Win7 has been working for some time, but I noticed that my video output wasn't working. I went into Device Manager and found that I didn't have a driver for my video card: it just recognized it as the standard one. I searched online and found an XP driver for it, released by Gateway. Device Manager accepted this driver and prompted me to reboot. After that, I noticed that my Sleep and Hibernate options in the Shut Down menu have been grayed-out. I looked online and found that many people are attributing this to display drivers, as such an old driver would surely not be compatible with the standby procedures Windows 7 uses. To make it clear: I was able to Sleep and Hibernate before updating the drivers; now, I can't. Running powercfg /a gives me, "An internal system component has disabled this standby state," for each available standby mode. Is there some way that the driver can be modified to support hibernation? The new driver fixed my video output problem, but I guess hibernation is more important for me. If not, what steps should I take to remove the driver and just leave the standard Windows one, which previously supported hibernation and sleep on this computer? Thanks in advance.

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• Cannot write to directory after taking ownership

  - by jeff charles

  I had a directory on an internal hard-drive that was created in an old Windows 7 install. After re-installing my operating system, when I try to create a new directory inside that directory, I get an Access Denied message. This isn't a protected directory, just a random directory I created at the drive root (that drive was not the C drive in either install). I tried to take ownership by opening folder properties, going to the Security tab, clicking on Advanced, going to Owner tab, clicking on Edit, selecting my user account, checking Replace owner on subcontainers and objects, and clicking Apply. There were no error messages and I closed the dialogs. I rebooted, checked the owner on that folder and a couple subfolders and it appears to be set correctly. I am still getting an Access Denied message however when trying to create a directory in it. I've also tried using attrib -R . to remove any possible readonly attribute inside the directory in an admin command prompt but am still unable to create a directory using a non-admin prompt (it does work in an admin prompt). Is there anything I can do to get write access to that folder and it's subcontents in a non-elevated context without disabling UAC?

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• Ubuntu on VPS becomes unresponsive: BUG: soft lockup - CPU#0 stuck for 22s

  - by Bhante Nandiya

  We have a VPS running Ubuntu, on Xen. The problem is this, about once a day, for about 20-50 minutes, at a random time, the server becomes completely unresponsive to the outside world. After this period, it becomes responsive again, as if nothing had happened, it doesn't lose uptime, it doesn't restart. It just starts responding again as if it had been in suspended animation. These outages occur under conditions of non-exceptional memory and cpu, for example 70% mem, 5% cpu. I have stopped all non-essential services so the usage is very even. These outages don't particularly occur during times of increased memory/cpu (during daily tasks), they sometimes occur at times of very low cpu use (<2%), but in the past also occured during swapping. These blackouts have been occurring both under Ubuntu 12.04 LTS, and Ubuntu 14.04 LTS - no change at all (I upgraded Ubuntu specifically to see if it helped this problem). It is possible to log into our webhosts site, and use their administration console to see error messages from during this time. Presumably, these messages are from the Xen virtualization, the main message goes like this: BUG: soft lockp - CPU#0 stuck for 22s! [ksoftireqd/0:3] (repeats many times) SysRq : Emergency Sync (Sometimes this is the only message in the console) Others seen previously under different load situations include: BUG: soft lockup - CPU#0 stuck for 22s! [swapper/0:0] (repeated many times) or: INFO: rcu_sched detected stall on CPU 0 (t=15000 jiffies) (repeated many times with t getting bigger) From googling around I've tried various kernel parameters such as nohz=off and acpi=off to no avail. All tech support has said is that other Ubuntu installations are not suffering the same problem. Anyone got any ideas or experience with this problem?

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• Change A Password

  - by Thomas

  I have a non-domain machine that I use with our company's domain resources over vpn regularly. I switched to Windows 8 (fresh install), and the "Change a password" option went away from the Ctrl-Alt-Del window. Can't seem to google anything about this subject, or find a way to access that password change dialog. I tried running the .reg file from http://www.sevenforums.com/tutorials/63014-ctrl-alt-del-screen-add-remove-change-password.html with no luck. I also tried to Disable "Remove Change Password" via gpedit.msc. I could do it from my domain laptop, but I like to do it on this machine because it updates all my saved copies of those credentials. My local account is tied to my hotmail account if that matters. Updates: Administrator account. I apologize for stating this was an upgrade, it was a fresh install to a diff't drive. 64-bit Pro install. Bounty's almost up If someone can just confirm that the Change A Password... should or should not be present on a non-domain, Live tied, Win8 install, I'll be satisfied that I can or cannot expect to fix it.

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• Why am I missing 4GB of RAM on Windows Server 2008 R2 64bit?

  - by Nick G

  I noticed today that a server was very low on memory. It physically has 8GB installed and runs Windows 2008 R2 Standard 64bit. It also hosts 2 virtual machines using HyperV. Server is Dell Poweredge R510. However the host OS reports in task manager that it only has 4GB of RAM, despite actually having 8GB and it being a 64bit OS. Computer properties shows Installed memory: 8.00GB (3.99GB usuable). Why would "usable" be half the real RAM installed under a 64bit OS? Additionally nearly all of the 4GB of visible RAM on the host OS is being used by something without anything showing up in task manager (presumably HyperV as it's allocated 3.6GB to the virtual machines its hosting). However that doesn't explain where the other 4GB has gone which Windows can't even see. Where is my missing 4GB of RAM? Update: Dell OpenManage says this: Total Installed Capacity 8192 MB Total Installed Capacity Available to the OS 4096 MB So looks like Nathan's suggestion of memory mirroring might be correct. I'll have to reboot to check this (I think?) Update 2 OK. So I reboot and I get a message saying "the amount of system memory has changed" (despite not having touched the hardware in a year). Once Windows has booted, all 8GB is visible again. Looks like I probably have a hardware RAM issue (I'll perhaps try reseating it whenever I can chuck everyone off the server next). Thanks for your answers and comments. I was hoping it was going to be the mirrored-RAM option but it seems not - that's not even mentioned in the BIOS.

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• Windows XP cannot read DVD burned on Ubuntu

  - by webcrawl

  The story : I have burned a DVD disc on Ubuntu using Brasero. When file burning was complete, I canceled the burning of checksum to DVD. Then I put that DVD on Windows XP (SP3) and copied all the files from DVD to the hard drive (no errors when copying). When that was done I discovered that all copied files are not readable. What is more, all the files on that DVD also shown to be not readable, even though all file names, directories were in their place. What I found out? Windows detect that the disc is in CDFS (CD-ROM File System). Disc is clean as new, have no scratches. All files while opened in Notepad++ look like "NULNULNULNULNUL" in one line. The size of files is normal. Other discs that are recognized as CDFS can be read with no problems. What I tried? Starting CDFS service in Windows registry. Result - a new device in Windows Device Manager (JUBS JGH2ZCT SCSI CdRom Device). Removing my CD/DVD device from Device Manager. Result - Windows restarted the system and reinstalled the driver. So... how to read the DVD, when I have no access to any other PC, any other OS?

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• /etc/hosts: What is loghost? (fresh install of Solaris 10 update 9)

  - by cjavapro

  # # Internet host table # ::1 localhost 127.0.0.1 localhost XX.XX.XX.XX myserver loghost What is the purpose of loghost? If it was not for having loghost in there, all the /etc/hosts files on all the servers in this particular network could be identical. Edit: I looked at /etc/syslog.conf #ident "@(#)syslog.conf 1.5 98/12/14 SMI" /* SunOS 5.0 */ # # Copyright (c) 1991-1998 by Sun Microsystems, Inc. # All rights reserved. # # syslog configuration file. # # This file is processed by m4 so be careful to quote (`') names # that match m4 reserved words. Also, within ifdef's, arguments # containing commas must be quoted. # *.err;kern.notice;auth.notice /dev/sysmsg *.err;kern.debug;daemon.notice;mail.crit /var/adm/messages *.alert;kern.err;daemon.err operator *.alert root *.emerg * # if a non-loghost machine chooses to have authentication messages # sent to the loghost machine, un-comment out the following line: #auth.notice ifdef(`LOGHOST', /var/log/authlog, @loghost) mail.debug ifdef(`LOGHOST', /var/log/syslog, @loghost) # # non-loghost machines will use the following lines to cause "user" # log messages to be logged locally. # ifdef(`LOGHOST', , user.err /dev/sysmsg user.err /var/adm/messages user.alert `root, operator' user.emerg * ) Very interesting. when shutting down,, alerts go to all users probably through *.emerg * Looking at ifdef, it seems that the first parameter checks to see if current machine is a loghost, second parameter is what to do if it is and third parameter is what to do if it is not. Edit: If you want to test a logging rule you can use svcadm restart system-log to restart the logging service and then logger -p notice "test" to send a test log message where notice can be replaced with any type such as user.err, auth.notice, etc.

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