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  • Odd behavior of permissions and icons

    - by Urban
    After some virus had infected my Windows 7, I did a complete format and re-installed the OS. I was just installing applications and copying back some data when I noticed some shortcuts changing their icons to something I couldnt recognize (Yellow icons in the image below). Also, a few exe files which previously did not ask for User permission, are now asking for it. Wondering if this is an icon cache problem, I cleared the cache by deleting the IconCache.db in AppData/Local but the problem still persists. Although I did a full system scan with MS Security Essentials, I'm not sure if this is another virus or some other problem. I would appreciate any suggestions you might have. Edit: Now even Firefox needs permissions to launch. It's icon hasnt changed, but it's got the 'shield' overlay on it like the other yellow icons.

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  • How often do you review fundamentals?

    - by mlnyc
    So I've been out of school for a year and a half now. In school, of course we covered all the fundamentals: OS, databases, programming languages (i.e. syntax, binding rules, exception handling, recursion, etc), and fundamental algorithms. the rest were more in-depth topics on things like NLP, data mining, etc. Now, a year ago if you would have told me to write a quicksort, or reverse a singly-linked list, analyze the time complexity of this 'naive' algorithm vs it's dynamic programming counterpart, etc I would have been able to give you a decent and hopefully satisfying answer. But if you would have asked me more real world questions I might have been stumped (things like how would handle logging for an application, or security difference between GET and POST, differences between SQL Server and Oracle SQL, anything I list on my resume as currently working with [jQuery questions, ColdFusion questions, ...] etc) Now, I feel things are the opposite. I haven't wrote my own sort since graduating, and I don't really have to worry much about theoretical things that do not naturally fall into problems I am trying to solve. For example, I might give you some great SQL solutions using an analytical function that I would have otherwise been stumped on or write a cool web application using angular or something but ask me to write an algo for insertAfter(Element* elem) and I might not be able to do it in a reasonable time frame. I guess my question here to the experienced programmers is how do you balance the need to both learn and experiment with new technologies (fun!), working on personal projects (also fun!) working and solving real world problems in a timeboxed environment (so I might reach out to a library that does what I want rather than re-invent the wheel so that I can focus on the problem I am trying to solve) (work, basically), and refreshing on old theoretical material which is still valid for interviews and such (can be a drag)? Do you review older material (such as famous algorithms, dynamic programming, Big-O analysis, locking implementations) regularly or just when you need it? How much time do you dedicate to both in your 'deliberate practice' and do you have a certain to-do list of topics that you want to work on?

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  • Using remote station as original

    - by Neka
    I have 2 computers with totally same Debian, config, apps and other stuff. One at work and another at home. It's inconvenient to maintain the same configuration on these stations - upgrading OS, sync configuration, etc. Is there the way to use my home station as "host", and such a "terminal" at work? As if i have one HDD on 2 computers, but must use they own resources like an videocard and another. Looks like i need some remote tool as VNC, but this is no sessional event, I need to use "terminal" comp like original all of the time.

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  • How to revert to "last known good configuration"

    - by Ripley
    Hi Guys. I failed to install ubuntu 10.04 with WUBI, for some reason it's showing me the root partion is not defined. I'm bored to fight with it so I just removed ubuntu in windows. However this installation made my original Windows XP cripple, a normal boot will end up with a blue screen, error code 7E, I'm still able to boot with the 'last known good configuration' tho. My understanding is booting like this will recover things and I'm supposed to be good when reboot, while this is not the case for me, I have to choose the 'boot from last known good configuration' each and every time to work around the blue screen. Could you suggest how could I resolve this? I feel it's foolish having to waste 10 more seconds each time starting the OS.

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  • Default Program With Multiple Versions Installed

    - by Optimal Solutions
    I have multiple versions of Excel installed. Excel 2010, 2007 and 2003. I have them installed on one hard drive with Windows 7 Ultimate as the OS. When I double-click on an XLS file, Excel 2007 opens. I would like Excel 2010 to open. I read and followed the instructions to go to the Control Panel at "Control Panel\All Control Panel Items\Default Programs" and set the default programs. I changed the default to the physical EXE for Excel 2010 at the proper folder that it is installed. When I double-click on the XLS files, Excel 2007 still opens. So I tried to change it to Excel 2003 just to see if it changed to that and it still opens Excel 2007. What am I missing? I would really like the file extension to open Excel 2010, but can not seem to do that.

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  • How to clone & restore virtual box hard drive

    - by user23950
    What I want to do is to clone my virtual box hdd with dual boot os. Xp and Vista. I'm using acronis and back it up on a flash drive. And end up with the flash drive that is partitioned. 2 partitions just like the virtual box hard disk. What do I do to restore it. I'm running acronis inside virtual box. What do I do to make use of the backup and actually restore what I've back up. And to be able to boot to xp and vista again inside virtual box. Please help.

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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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  • What is the best way to get the external internet gateway IP reported periodically?

    - by basilmir
    I have a OS X Server behind an airport extreme, serving services via opened ports on the airport. The server has a 10.0.x.x local address, always the same one. The airport extreme gets it's external IP address via PPPoE, and sometimes... once a week it changes. For security reasons WE ACTUALLY like this behavior. But i need a way to know the external IP address just in case i need to connect and do something to the server while on the outside. What can i do?

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  • First Linux - Ubuntu - should I change anything right away?

    - by Cyrcle
    I'm going to be getting a new system next week. I'm finally going to take the leap and run Linux as the native OS on it. Seems like a standard install of Ubuntu is the way to go for a newbie. I'm planning on 10.04 LTS. Is there anything that I should change right away that will cause me problems down the road? I'll be using this system for web development, mainly programming PHP. I'll be using my old laptop for testing with IE and Safari, at least until I either use Wine or VirtualBox to run them on the new machine. I think I'm going to force myself to learn Vim while I'm at it.

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  • Why doesn't wireless work on Wubi 12.04 with a Broadcom BCM4312 card?

    - by Kristin
    I have recently set up ubuntu 12.04 on my laptop using the Wubi installer. I am having a very difficult time setting up a wireless internet connection. I am currently set up with an ethernet connection which I have used to download all new updates and to activate the Broadcom STA wireless driver. I have tried several things in the terminal based on other people's posts: ~$ rfkill list 0: brcmwl-0: Wireless LAN Soft blocked: no Hard blocked: yes ~$ rfkill unblock all It doesn't change anything. I also tried rebooting and connecting to the internet on my Windows Vista OS, and it worked, so I know that the connection should not be hard blocked. I have also tried installing b43 firmware (lp/phy version) that is supposed to work with my chip (BCM4312). It seems to have no effect. Then I tried: ~$ iwconfig lo no wireless extensions. eth1 IEEE 802.11 Access Point: Not-Associated Link Quality:5 Signal level:0 Noise level:0 Rx invalid nwid:0 invalid crypt:0 invalid misc:0 eth0 no wireless extensions. This is my first time trying to work with ubuntu, so I would appreciate any help. Thanks. Also sorry this is poorly formatted. I'm having troubles with that too.

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  • How badly do SSDs degrade without TRIM?

    - by joev
    SSDs have been out for a few years, and have seen all kinds of usage patterns. Windows and Linux support the TRIM command, with Mac OS still trailing behind here. Update (2 Aug 2011): It appears OSX Lion has support for TRIM in Apple-branded SSDs. There is a utility that enables TRIM in non-Apple SSDs I'm sure plenty of Mac users (and pre-TRIM version of Win/Linux) have SSDs. So, to you folks: have you noticed a degradation of SSD performance during its lifetime? How long have you been using the SSD, and how bad is the degradation? I'm assuming that even at its most degraded state, a modern SSD would still smoke a traditional hard drive in terms of performance.

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  • Microsoft mouse screws up my power settings

    - by Patriot
    Running a new computer with Windows 7 and 64-bit OS. Had a wireless Logitech mouse that worked perfectly with this set up. The mouse was old, and the buttons were sticking and causing double clicks, so I bought a new Microsoft Mobile Wireless 3000 mouse to replace it. The new mouse works perfectly, but now my screen saver is disabled and my computer won't go into sleep mode after 15 minutes as per my power setting. If I hook the Logitech mouse back up, screen saver works fine and computer goes to sleep as it should. Am I missing something, or is Microsoft's mouse just junk. Got no software with the new mouse, so no drivers seem available.

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  • Windows XP: how to disable automatic encryption on downloaded files

    - by T. Webster
    I have Windows XP SP3 and every file I download is automatically encrypted no matter what directory I save the downloaded file in. So it's not as simple as turning off encryption of any specific directory, the file will be downloaded as encrypted regardless of whether the directory is encrypted or not. Is there a policy or registry setting somewhere to disable this automatic encryption? (EDIT: I doubt it's malware since this OS was just installed on this machine. It's my work PC and by default I think there's some group policy or other setting which not only sets everything in My Documents to encrypted, but also everything I download, no matter where it's downloaded to. )

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  • Long domain lookup on .dev domain inside vmware

    - by skelle
    I'm developing on my macbook and normally I have a local running webserver which just works finde. Now I have to use a vmware image where the webserver is running. I set up everything and my dev site is running under site.dev inside vmware. I can connect to the webserver but EVERY request takes a very long time. I already red that this is related with iIPv6 and the way OSX handles /etc/hosts. There I added 192.168.155.42 site.dev and I already did this (Resolving to virtual host very slow on Mac OS X Lion) but my lookup still takes ~30seconds on every request. What can I do to fix this issue?

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  • Password not accepted when resuming from sleep

    - by Comrade
    My HP Pavilion dv-series notebook will not accept the user account password for the logged in user when resuming from sleep - message returned is Incorrect Password. Simply selecting the Switch User option reloads the login screen and allows me to log in as the same user with the same password that was originally rejected. And, yes I've tried it more than one (hundred) times in case you were thinking it's just a case of slippery fingers. Another interesting point is that it appears to be independent of the software running on the machine. Since the issue first appeared, I have done two clean installs where all HD partitions were wiped and new ones created during fresh installation of the OS. The first such clean install was of Ubuntu (Lucid) 10.04 amd-64, the second of Win 7 Pro 64 (from boxed disc and activated post install). Exactly the same symptoms, described above, are exhibited on both platforms. Have engaged in significant amount of Googling an come up empty so any ideas are welcome.

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  • Is full partition encryption the only sure way to make Ubuntu safe from external access?

    - by fred.bear
    (By "external access", I mean eg. via a Live CD, or another OS on the same dual-boot machine) A friend wants to try Ubuntu. He's fed up with Vista grinding to a crawl (the kids? :), so he likes the "potential" security offered by Ubuntu, but because the computer will be multi-booting Ubuntu (primary) and 2 Vistas (one for him, if he ever needs it again, and the other one for the kids to screw up (again). However, he is concerned about any non-Ubuntu access to the Ubuntu partitions (and also to his Vista partition)... I believe TrueCrypt will do the job for his Vista, but I'd like to know what the best encryption system for Ubuntu is... If TrueCrypt works for Ubuntu, it may be the best option for him, as it would be the same look and feel for both. Ubuntu will be installed with 3 partitions; 1) root 2) home 3) swap.. Will Ubuntu's boot loader clash with TrueCrypt's encrypted partition? PS.. Is encryption a suitable solution?

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  • Auto-starting a GUI application that requires sudo

    - by nanostuff
    Question: I need to auto-start a GUI application that requires sudo. I know I need to edit the sudoers file with: sudo visudo However, I don't know what to write in the file. What I already tried: sudo visudo and then added the following: nanostuff ALL = NOPASSWD: /usr/lib/AirVPN/AirVPN.exe I also tried with: nanostuff ALL = NOPASSWD /usr/bin/X11/airvpn and nanostuff ALL = NOPASSWD /usr/bin/airvpn None of those worked. By doing: ps aux | grep airvpn I get the following output: nanostuff 6805 0.2 0.4 483520 17384 ? Sl 17:13 0:01 /usr/bin/gksu -u root -m AirVPN Client needs administrative privileges. Please enter your password. mono /usr/lib/AirVPN/AirVPN.exe path=/home/nanostuff/.airvpn root 6806 0.0 0.0 78604 2392 ? Ss 17:13 0:00 /usr/bin/sudo -H -S -p GNOME_SUDO_PASS -u root -- mono /usr/lib/AirVPN/AirVPN.exe path=/home/nanostuff/.airvpn root 6808 3.2 2.0 1257532 83032 ? Sl 17:13 0:12 mono /usr/lib/AirVPN/AirVPN.exe path=/home/nanostuff/.airvpn root 6832 0.0 0.0 22652 3336 ? S 17:14 0:00 /usr/sbin/openvpn --config /home/nanostuff/.airvpn/384ef91f85df5ea2abc88c7416b95bbdf2bc4299edd2850614d4e343ba721ae3.tmp.ovpn nanostuff 6951 0.0 0.0 18932 932 pts/2 S+ 17:20 0:00 grep --color=auto airvpn Additional info: OS: Ubuntu 14.04 64bits Application: It's a VPN client

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  • Context switches much slower in new linux kernels

    - by Michael Goldshteyn
    We are looking to upgrade the OS on our servers from Ubuntu 10.04 LTS to Ubuntu 12.04 LTS. Unfortunately, it seems that the latency to run a thread that has become runnable has significantly increased from the 2.6 kernel to the 3.2 kernel. In fact the latency numbers we are getting are hard to believe. Let me be more specific about the test. We have a program that has two threads. The first thread gets the current time (in ticks using RDTSC) and then signals a condition variable once a second. The second thread waits on the condition variable and wakes up when it is signaled. It then gets the current time (in ticks using RDTSC). The difference between the time in the second thread and the time in the first thread is computed and displayed on the console. After this the second thread waits on the condition variable once more. So, we get a thread to thread signaling latency measurement once a second as a result. In linux 2.6.32, this latency is somewhere on the order of 2.8-3.5 us, which is reasonable. In linux 3.2.0, this latency is somewhere on the order of 40-100 us. I have excluded any differences in hardware between the two host hosts. They run on identical hardware (dual socket X5687 {Westmere-EP} processors running at 3.6 GHz with hyperthreading, speedstep and all C states turned off). We are changing the affinity to run both threads on physical cores of the same socket (i.e., the first thread is run on Core 0 and the second thread is run on Core 1), so there is no bouncing of threads on cores or bouncing/communication between sockets. The only difference between the two hosts is that one is running Ubuntu 10.04 LTS with kernel 2.6.32-28 (the fast context switch box) and the other is running the latest Ubuntu 12.04 LTS with kernel 3.2.0-23 (the slow context switch box). Have there been any changes in the kernel that could account for this ridiculous slow down in how long it takes for a thread to be scheduled to run?

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  • How to setup IP alias on bridged interface in Ubuntu

    - by Anonymouslemming
    How do I setup an IP alias on a bridge (br0) device on Ubuntu ? If I wait for br0 to come up and then do /sbin/ifconfig br0:0 192.168.10.1 netmask 255.255.255.0 then it works fine. If however I add the following to my /etc/network/interfaces file, it does not work and the network fails to start: auto br0:0 iface br0:0 inet static address 192.168.10.1 netmask 255.255.255.0 At the moment, I have a script in /etc/network/if-up.d/bridge_alias that does this as follows: #!/bin/bash if [ "${LOGICAL}" == "br0" ] && [ "${PHASE}" = "post-up" ]; then echo -n "Starting br0:0 ... " /sbin/ifconfig br0:0 192.168.10.2 netmask 255.255.255.0 echo "Done!" fi What is the right way of doing this though, just using the OS network config files ?

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  • Librated error when creating partition table

    - by Marko
    I bought a Dell Inspiron 5521 laptop a few days ago that came with Ubuntu preinstalled. I haven't used Ubuntu yet, and I don't have any experience in using it. I wanted to install Windows 7 64-bit on my laptop alongside Ubuntu, and made two bootable USB drives with Gparted and Windows 7. There wasn't a suitable partition on my laptop in which I could install Windows 7. I've read the instructions for using Gparted to create or manage my hard drive. I inserted the USB, booted from BIOS, and followed the procedure in installing Gparted. Then I entered Gparted, and the following error occurred: Librated error when Creating partition table. It asked me to click on either OK or Cancel. Either way I had my hard disk shown to me in the user window, in partitions that were made by the manufacturer: Partition File sys Label Size Flags /dev/sda1 fat32 dellutility 300.00 Mib diag /dev/sda2 fat32 os 3.00 Gib lba /dev/sda3 ext4 912.46 Gib boot /dev/sda4 extended 15.75 Gib (had a subpart) /dev/sda5 linux-swap 15.75 Gib ...and a option to switch to dev/sdb that's unused and of capacity 3Gib. I've used the biggest partition 912.46 Gib, and tried to reduce its size, and clicked OK. Then when I tried to make a new partition, it said it can't make any more partitions, no more than a maximum of 5. I would like to keep Ubuntu and slowly learn, but I also need to use programs that work in Windows. Thank you for taking the time to answer my question.

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  • basic help for Nat configuration needed

    - by Klaes S.
    I have a server with a IP 1.0.0.5/24. This is the main IP address of the server, and now I have two other IP addresses for the server, they are 1.0.2.30/24 and 1.0.2.31/24. I want to make a VirtualBox running another OS accessible through the Internet, and only allow the specified IP to reach the virtual box. I'm new to iptables and therefore I need some basic help and getting started information about this. The hosting provider does not allow more than on MAC address per switch port, which means that I'm not able to make bridge as far as I know. Futhermore I want the host, to reject the extra IPs so its only the VirtualBox / virtual machine that accepts the request's on the extra IPS.

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  • ruby on rails server is intermittently slow

    - by Richard
    My rails installation was chugging along nicely. Last night we had to perform a hot-patch with was really a standard deploy of some exception code. Once capistrano finished the operation one of our admins discovered that there were two long running passenger processes. While we have deployed release over the past two weeks it would appear that these processes have been here and alive the whole time. Granted they could have been zombies or any other artifact and at this point we do not know what state they were in. Which leads me to the question: There are so many moving parts between the rails application and the OS/hardware that being a SME is probably no longer possible. So; how does a sysadmin perform root-cause analysis with any certainty? And: When do I just start rebooting servers?

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  • Remote HTTP to FTP

    - by jamd12
    I am on a very slow download with the internet that I have and unfortunately I only have access to expensive and slow wireless or satelite. I have set up an FTP with a computer supplier locally who has a nice 2 Mbps speed and am trying to set up a way of adding links remotely (Hotfile, rapidshare, Fileserve, etc.) so that they can be downloaded onto the FTP and then transfered a few times a week manually onto a portable HDD. On my home PC I use Internet download manager for all my downloads. Is there a simple way that I can add links remotely to Internet Download Manager on the FTP or perhaps another solution? The OS on the FTP is Linux - I use Windows XP SP3 and Windows 7. I have not used FTP very much before so any suggestions on how best to do this would be much appreciated.

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  • Setting up a network between a host and guest virtual machine

    - by anonymous
    (I'm running ubuntu server 12.04 on virtual box) I'm trying to transfer a file (scp) from my laptop to one of the directories of a virtual machine. I tried sharing folders, but that failed. I'm a bit of a networking newbie. I've looked at like 20-30 pages. Here's one: http://www.howtoforge.com/moving-files-between-linux-systems-with-scp I followed those steps exactly. My problem is that when I try using scp, it just hangs. I'm also not sure which network interface to configure (eth0, eth1?) in the guest OS. Another (significant?) detail is that the inet address of eth0 is 10.0.2.15 instead of something like 192.168.x.y. I've enabled the bridge adapter and the host-only adapter. Both the laptop and guest VM have openssh-server installed. I'm not sure what to do at this point. Is there a better place to ask about this?

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  • Where to find information about ubuntu compatible or certified hardware/PC models

    - by Halkinn
    I am buying a new desktop PC in early 2013, anyway this question should apply to someone intending to buy a new laptop/ultrabook as well. This machine is not meant for gaming, and if I ocasionally do it, I can survive with minimum graphics. However I may need some heavy multimedia edition or multitasking at times, so basically my greatest priority is a good processor, after that perhaps average graphic card (if onboards are not enough, I am still not informed enough about that), at least 4GB of RAM with possibility of expansion. I know there are some PC models specially designed to ship with Ubuntu, which is the OS I use the most these days. However, most people around me use Windows and some software with unsupported versions for Linux and not having a Windows license becomes a bit problematic. Given that, I would like to find information about which PC models or even manufacters currently on the market have the best compatibility with Ubuntu, I am still undecided between building my own desktop or buying a pre-made model, so I would like to find information both for certified models and certified hardware or even Ubuntu partners that may work closely with Canonical. Where to find this information in order to make sure that I will have a good experience with Ubuntu on my new PC in the years to come?

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