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• An "Invoke Update Manager to update everything and shutdown" script after idle for x minutes?

  - by unknownthreat

  I have Ubuntu 10.10 installed on a machine for my parents. The thing is they never request updates from Update Manager even the manager itself prompted them so. Moreover, when they are done with whatever they are doing on Ubuntu, they always leave the computer on. And I always have to come back and shut the machine down. Sometimes, the computer even sit idle for hours. So I want to know whether this is possible in Ubuntu. I am thinking of a script that will be activated after the machine is idle for x minutes. When x minutes have elapsed, Update Manager will automatically update everything listed. (I recall that you need the admin password for this, so is there a workaround?) After all the updates are done, the machine will automatically shutdown. Is this possible?

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• How large of a swap partition is needed to hibernate?

  - by Closure Cowboy

  I've read this question, but it doesn't definitively answer my question. If I want my computer to be able to hibernate, do I need to have a swap partition as large as my RAM, or will Ubuntu wisely be able to hibernate if the swap partition can fit the currently-in-use RAM? I'm about to install Ubuntu on a computer with a lot of RAM, and a relatively small hard drive, so I don't want to use more hard drive space than necessary. I wanted to avoid giving my actual specifications to keep this question more general, though I'll give them if necessary.

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• Save to Hard Drive instead of bootable USB

  - by WAM

  I followed the instructions on the Ubuntu website on how to put Ubuntu 12.04 on a USB and make it a bootable USB stick for windows. It worked fine and I can boot up and run Ubuntu, but every time I try to download software or change settings it tries to save it to the USB rather than the hard drive built into the computer. The USB doesn't have enough space so the download fails and in addition it doesn't retain setting changes so when I restart my computer all the settings return to default and anything I saved is gone. Is there any way to change things so that when I download software or change settings Ubuntu will save it to my hard drive instead of the USB?

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• Flashing task bar(firefox) in lxde panel and ubuntu internal error

  - by arroy_0209

  I have upgraded from ubuntu10.04 to 12.04 and installed lxde. The panel is now customized according to my convenience. The problem is there was a default checked option for "Flash when there is any window requiring attention" in Task bar(window list) and now when I run firefox, at times the concerned bar in the panel window list starts flashing but it is not clear exactly why at that moment firefox requires my attention. Normally this happens after I download some files (pdf files) and keep using firefox. The only solution I have found is to quit firefox and even after that I receive this message "Sorry, ubuntu12.04 has experienced an internal error. If you notice further problems, try restarting the computer." As usual I report the detailed message to ubuntu as suggested and finally restart the computer. So there are two problems, first, exactly why firefox needs my attention at times and second, why immediately after this, ubuntu experiences an internal error. Please suggest what I should do.

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• What is the ideal laptop for creative coding applications?

  - by Jason

  Hi, I am a creative coder using C++(cinder and OpenFrameworks) I am looking to upgrade from my MacBook, which slowed down to about 3fps this morning. My project involves particles systems and fluids reacting to audio analysis data and computer vision data in real-time. SD or HD? no biggie. I have asked many people what computer I need. Ideally, I want a MacBook Pro. But is that enough power? I've been told that I need a desktop for what I am doing though I'd rather stay portable I've been told that I should go PC linux to get the most power but I'd rather stay mac I've been told that RAM is more of bottleneck than processor speed I've been told that the Graphics Card is more important than CPU and that code optimizations such as using trees over lists, proper threading, sending tasks to the GPU make a bigger difference than the hardware!!! what's true?! what do I need? Any suggestions are greatly appreciated

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• Just installed Ubuntu 12.04 - integrated speakers aren't working but headphones are

  - by Mat Elkan

  I've just installed Ubuntu 12.04 alongside Windows Vista. There were no previous versions of Ubuntu installed. My computer is a Sony Vaio all in one, with integrated sound card and speakers. I can't get any sound coming from the speakers, but if I plug headphones into the jack on the side of the computer and select "headphones" under "sound" in "system settings" I can get sound through them. I have been searching all day trying to find a fix but haven't had any luck. Any advice would be greatly appreciated. Thanks! Mat :-)

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• Sharing samba-folder with root access

  - by Industrial

  Hi everyone, I have a staging server in my network running Ubuntu server 10.10, being my main development area. As I need to access the files in the Apache root from other computers in the network, I have setup samba with the following settings: [www] comment = Apache root www path = /var/www writable = yes force user = root force group = root On the host computer, running Ubuntu 10.10 desktop, I am trying to mount the drive with a bash file looking like below: #!/bin/bash sudo mount -t cifs //192.168.1.5/www /media/www/ -o username=myusername,password=mypassword,rw,iocharset=utf8,file_mode=0777,dir_mode=0777 What happens is that I get mount error(13): Permission denied Refer to the mount.cifs(8) manual page (e.g. man mount.cifs) thrown in my face whilst trying to execute the mount. I've done exactly the same, with exactly the same smb.conf & mount-bash file on another computer in my network, but this just wont work. What am I doing wrong? I am running out of ideas.

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• brother MFC-J435W wireless scanning issue

  - by ogreen32

  Thanks for taking the time to read this. I have a brother MFC-J435W and I was able to get the printer set up for wireless printing, but it is not allowing me to scan wirelessly. It gives me the message to "check connection". I'll tell you what I've done so far and maybe someone can help me out. I've installed the scanner driver and scan tool I installed Xsane (to see if it would allow the scanner to communicate with the computer and that didn't help). I've tried restarting the computer. After those things I am now at a loss as to where to go from here. Any help would be great. Thanks. I've also searched for this question in the Brother FAQ as well as on here and I haven't found an answer. Thanks again.

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• Ubuntu Stuck at boot after update

  - by raphie

  I'm doing this question because I can't edit other questions and I'm trying to set up my computer with Ubuntu but I'm a total idiot about this. I want to give Ubuntu a try, I build up a system specially for Ubuntu but when everything seems to be OK I made a suggested update and now when I restart my computer Ubuntu is stuck in the purple screen. I read other questions about this but, as I said, I'm a total idiot with this and I don't understand a bit what you guys are talking about when saying reboot with Grub, press Ctrl-F4 or whatever. My keyboard shutdown when this happens and only accepts Alt-Ctrl-Del to reboot again. Ctrl-F4 is not working for me. Pleas Help Me, cure my MS insanity Pleaseee! :) Any help I will appreciate it!

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• Is it possible to create a virtual drive and share via USB?

  - by Matthew

  My question is kind of hard to follow, but I'm asking if it's possible to make a virtual flash drive and sync it to another device with a USB to USB cable? To make things more clear, think of a typical flash drive. You connect it to a laptop and it shows up as a removable disk. Is it possible to make a computer a host of a "Virtual Drive" that would be connected to a USB cord on one end, and the other end connecting to another device such as a Xbox 360, or another computer.

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• Using versioning for settings in home?

  - by maaartinus

  I planned to use git for the important files in my home directory, so I can revert bad settings or transfer them to another computer as needed. But there's too much chaos there, with each program mixing wildly temporary files, caches, logs, backups, and everything. Finding anything worth saving is hard, and when I've found any settings done by myself, there were mixed with informations specific to the computer (so I could hardly take them to another one) and timestamps (so tracking useful changes is hard). Is anybody doing it or is it just hopeless? How to filter out the garbage?

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• Clear Linux file system after shutdown / start

  - by user35443

  I have very specific task. I need to clear the desktop, downloads, documents and so on after every shutdown or finish. For example, if anyone downloads something using Google Chrome, he will work with it and then he'll shutdown the computer for next use. And when second user sits for working on the computer, he'll find a clear file system without the data downloaded by the first user. On Windows, I used to work with Returnil Virtual System, but it doesn't have support for Linux. Can anybody tell me if is it possible and, if so, how? I was also thinking of using Wine for this program, but don't think it will be the best idea.

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• Ubuntu 14.04 doesn't detect my discrete GPU

  - by user258887

  I recently purchased a laptop with an Nvidia GeForce 860m, and have installed Ubuntu 14.04. On my old laptop I had 12.04, which automatically filled Additional Drivers with Nvidia drivers. But on this computer, the only thing in Additional Drivers is Qualcomm. So I manually installed Nvidia, but X Server Settings doesn't seem to detect any GPU... lspci | grep VGA reports only my integrated Intel GPU, but lspci -v reports many things, including the Nvidia GPU: 01:00.0 3D controller: NVIDIA Corporation GM107M [GeForce GTX 860M] (rev a2) Subsystem: ASUSTeK Computer Inc. Device 157d Flags: fast devsel, IRQ 16 Memory at ec000000 (32-bit, non-prefetchable) [size=16M] Memory at c0000000 (64-bit, prefetchable) [size=256M] Memory at d0000000 (64-bit, prefetchable) [size=32M] I/O ports at e000 [size=128] Expansion ROM at ed000000 [disabled] [size=512K] Capabilities: access denied Don't know what any of that means. Not sure if it's supposed to say 'access denied'... I need my GPU to do CUDA and OpenGL programming. What else can I do to figure out why this isn't working?

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• HTG Explains: How Antivirus Software Works

  - by Chris Hoffman

  Antivirus programs are powerful pieces of software that are essential on Windows computers. If you’ve ever wondered how antivirus programs detect viruses, what they’re doing on your computer, and whether you need to perform regular system scans yourself, read on. An antivirus program is an essential part of a multi-layered security strategy – even if you’re a smart computer user, the constant stream of vulnerabilities for browsers, plug-ins, and the Windows operating system itself make antivirus protection important. 8 Deadly Commands You Should Never Run on Linux 14 Special Google Searches That Show Instant Answers How To Create a Customized Windows 7 Installation Disc With Integrated Updates

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• Trouble with 12.10 lag

  - by Brennan

  Well basicly lately I have been having lag problems with 12.10. I will post my specs, but before the update to 12.10, it said that I had intel graphics. Now it says I have Gallium. My specs: *Memory: 3.9 GiB *Processor: Pentium(R) Dual-Core CPU E5500 @ 2.80GHz × 2 *Graphics: Gallium 0.4 on llvmpipe (LLVM 3.2, 128 bits) (used to say intel graphics) *OS Type: 32-bit *Disk: 486.1 GB The output of the command sudo apt-cache check is this: E: Invalid operation check The output of the command sudo lspci -nnk | grep -A5 VGA is this: 00:02.0 VGA compatible controller [0300]: Intel Corporation 4 Series Chipset Integrated Graphics Controller [8086:2e32] (rev 03) Subsystem: ASUSTeK Computer Inc. Device [1043:836d] Kernel driver in use: i915 00:1b.0 Audio device [0403]: Intel Corporation NM10/ICH7 Family High Definition Audio Controller [8086:27d8] (rev 01) Subsystem: ASUSTeK Computer Inc. Device [1043:8445] Kernel driver in use: snd_hda_intel

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• Update Errors in Xubuntu 12.10

  - by wil

  I updated by computer from 12.04 to 12.10 and after I finished updating when I turned on my computer I am unable to update my computer. I tried install a new copy of 13.04 but my cpu doesn't support pae. I have a IBM Thinkpad T42 with a 1.7 gigahertx Cpu. When updating through terminal This is the output. sudo apt-get upgrade: [sudo] password for wil: Reading package lists... Done Building dependency tree Reading state information... Done You might want to run 'apt-get -f install' to correct these. The following packages have unmet dependencies: linux-image-extra-3.5.0-34-generic : Depends: linux-image-3.5.0-34-generic but it is not installed linux-image-generic : Depends: linux-image-3.5.0-34-generic but it is not installed E: Unmet dependencies. Try using -f. sudo apt-get upgrade -f: Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following NEW packages will be installed: linux-image-3.5.0-34-generic 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. 3 not fully installed or removed. Need to get 0 B/11.8 MB of archives. After this operation, 25.9 MB of additional disk space will be used. Do you want to continue [Y/n]? y (Reading database ... 191530 files and directories currently installed.) Unpacking linux-image-3.5.0-34-generic (from .../linux-image-3.5.0-34-generic_3.5.0-34.55_i386.deb) ... This kernel does not support a non-PAE CPU. dpkg: error processing /var/cache/apt/archives/linux-image-3.5.0-34-generic_3.5.0-34.55_i386.deb (--unpack): subprocess new pre-installation script returned error exit status 1 No apport report written because MaxReports is reached already Examining /etc/kernel/postrm.d . run-parts: executing /etc/kernel/postrm.d/initramfs-tools 3.5.0-34-generic /boot/vmlinuz-3.5.0-34-generic run-parts: executing /etc/kernel/postrm.d/zz-update-grub 3.5.0-34-generic /boot/vmlinuz-3.5.0-34-generic Errors were encountered while processing: /var/cache/apt/archives/linux-image-3.5.0-34-generic_3.5.0-34.55_i386.deb E: Sub-process /usr/bin/dpkg returned an error code (1) wil@wil-ThinkPad-T42:~/Desktop$

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• Xubuntu keeps loading on install with usb stick

  - by mattyh88

  I'm trying to install Xubuntu on my computer. I've followed a guide to create a USB bootable drive. I've inserted the USB stick and started the computer. I can see Xubuntu loading and after a minute or 2 it shows me a screen asking me if I'd like to use the live version or if I'd like to install. I choose install. Then on the next screen I select English as language. When I click continue, Xubuntu just keeps loading. It doesn't really freeze as I can still quit and move the cursor. When I clicked quit, I see the live version and all is working just fine. I can browse the internet, etc. What could be wrong?

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• How To Create Custom Keyboard Shortcuts For Browser Actions and Extensions in Google Chrome

  - by Chris Hoffman

  Geeks love keyboard shortcuts – they can make you faster and more productive than clicking everything with your mouse. We’ve previously covered keyboard shortcuts for Chrome and other browsers, but you can assign your own custom keyboard shortcuts, too. Google Chrome includes a built-in way to assign custom keyboard shortcuts to your browser extensions. You can also use an extension created by a Google employee to create custom keyboard shortcuts for common browser actions – and less common ones. Image Credit: mikeropology on Flickr (modified) Can Dust Actually Damage My Computer? What To Do If You Get a Virus on Your Computer Why Enabling “Do Not Track” Doesn’t Stop You From Being Tracked

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• Boot windows from grub

  - by Parth Shah

  I had Windows 7 and Ubuntu on my hard disk. I had installed Ubuntu using Wubi. To uninstall Ubuntu I deleted the Ubuntu partitions from Windows 7 Disk Management. When I re-boot my computer it shows grub rescue. What do I need to do to re-gain access to Windows? I do not have a Windows 7 DVD. Commands like rootnoverify, chainloader do not work in grub rescue. I get an unknown command error. PS: I am posting this from another computer :)

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• 8 New Features in Ubuntu 12.10, Quantal Quetzal

  - by Chris Hoffman

  Ubuntu 12.10 has been released and you can download it now. From better integration with web apps and online services to improvements in Unity, there are quite a few changes – although none of them are huge or groundbreaking. The list of new features may be more exciting next time around, with Mark Shuttleworth promising secret development of new “tada!” features that will be unveiled closer to Ubuntu 13.04’s release. Can Dust Actually Damage My Computer? What To Do If You Get a Virus on Your Computer Why Enabling “Do Not Track” Doesn’t Stop You From Being Tracked

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• how to deal with parallel programming

  - by nkint

  Hi. I know that parallel programming is a big resource in computer graphics, with moder machines, and mayebe a computing model that will be grow up in the near future (is this trend true?). I want to know what is the best way to deal with it. there is some practical general purpose usefulness in studying processor n-dimensional mesh, or bitonic sort in p-ram machines or it's only theory for domain specific hardware used in real particular signal elaborations of scientific simulations? Is this the best way to acquire the know how for how to become acquainted with cuda or opencl? (i'm interested in computer graphics applications) and why functional programming is so important to understand parallel computing? ps: as someone has advice me i have forked this discussion from http://stackoverflow.com/questions/4908677/how-to-deal-with-parallel-programming

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• how to add programs to ubuntu without internet access

  - by captainandcoke

  I don't have internet access at my home and it takes me about a half hour to ride my bike to the library. I have downloaded .deb files to try to install at my home computer but everyone I have downloaded says it can't install because it depends on package X. The next day I will download package X and it will require package Y. Is there anyway to find out what ALL the sub-dependencies are for deb files? I have tried to boot from USB or External Hard drive on the library computers but the security settings prevent this. Also, I do not know anyone with a Linux computer.

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• "Untrusted packages could compromise your system's security." appears while trying to install anything

  - by maria

  Hi I've freshly installed Ubuntu 10.4 on a new computer. I'm trying to install on it application I need (my old computer is broken and I have to send it to the service). I've managed to install texlive and than I can't install anything else. All software I want to have is what I have succesfuly installed on my old computer (with the same version of Ubuntu), so I don't understand, why terminal says (sorry, the terminal talks half English, half Polish, but I hope it's enough): maria@marysia-ubuntu:~$ sudo aptitude install emacs Czytanie list pakietów... Gotowe Budowanie drzewa zaleznosci Odczyt informacji o stanie... Gotowe Reading extended state information Initializing package states... Gotowe The following NEW packages will be installed: emacs emacs23{a} emacs23-bin-common{a} emacs23-common{a} emacsen-common{a} 0 packages upgraded, 5 newly installed, 0 to remove and 0 not upgraded. Need to get 23,9MB of archives. After unpacking 73,8MB will be used. Do you want to continue? [Y/n/?] Y WARNING: untrusted versions of the following packages will be installed! Untrusted packages could compromise your system's security. You should only proceed with the installation if you are certain that this is what you want to do. emacs emacs23-bin-common emacsen-common emacs23-common emacs23 Do you want to ignore this warning and proceed anyway? To continue, enter "Yes"; to abort, enter "No" I was trying to install other editors as well, with the same result. As I decided that I might be sure that I know the package I want to install is secure, finaly I've entered "Yes". The installation ended succesfuly, but editor don't understand any .tex file (.tex files are for sure fine): this is pdfTeX, Version 3.1415926-1.40.10 (TeX Live 2009/Debian) restricted \write18 enabled. entering extended mode (./Szarfi.tex ! Undefined control sequence. l.2 \documentclass {book} ? What's more, I've realised that in Synaptic Manager there is no package which would be marked as supported by Canonical... Any tips? Thanks in advance

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• Dash doesn't recognize that application is installed

  - by Calixte

  I've installed Geary from the software center, but I can't launch it from the Dash nor did I manage to create an app icon on the Launcher. The Software center has no problem seeing that the app is installed (see screenshot) Running the command "geary" will launch the app. Is there any way I can force the Dash to function properly? Thanks, Calixte PS: Does anyone know what this problem is related to? I tried re-installing the app and restarting the computer but that has no effect at all. I have practically installed nothing on this computer, so I can't imagine what app could interfere with the Dash

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• Error : Could not display "obex://" when paired with a Nokia 3110c

  - by MobileDev123

  Hi, I have paired my nokia 3110c via bt on my pc, I can receive a file from my pc to the phone, but I can not browse the contents of phone from my computer. Here is the error message Error: Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken. Please select another viewer and try again. How can I transfer contents from my phone to my computer?

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