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• usb drive filesystem?

  - by purbleguy

  So, school is approaching quickly, and one of the things on my supply list is a usb drive. Now I'm asking myself what filesystem to use. After some research, I found ext4 to be the most stable drive filesystem. But, I also found that Windows (The OS used by every computer in my school) can't read ext4 formatted drives without special drivers, and I'm sure the school wouldn't be too happy with me having to install the windows ext4 drivers on every computer I use with my usb. So, my question is, Should I use fat32, one of the ext filesystems (2, 3 or 4 would work) or NTFS, I have an ubuntu laptop, a Mac desktop, and of course the school computers I use are Windows, so which would be the best filesystem for my usb.

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• How to lower wait time for repository updates

  - by Luis

  When doing a aptitude update / apt-get update or using the Update Manager to update sometimes I get to a repository link that takes too long. The percent does not end and it takes quite a while before it ignores it. How can I lower the time so that if a particular repository takes more than 10 seconds to connect or finish it should ignore it and move the following ones. Here is an image explaining the problem: It is trying to connect to archive.ubuntu.com but since it is taking too long it just sits there for at least 3 to 5 minutes (Haven't measured the time) and then it shows as ignored and moves to the following. I wish to change that to seconds instead of minutes.

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• How do I create a WiFi hotspot sharing wireless internet connection (single adapter)?

  - by Ruppesh Nalwaya

  I know how to create a hotspot when connected to a wired network, but when I am using internet from a WiFi connection, this disconnects the wireless connection the moment I activate the hotspot. In Windows I can use Connectify Hotspot, which enables me to share the internet connection from the same wireless adapter as I am creating an access point on. As you can read on the technology overview page: Access Point mode allows you to create a hotspot using the same Wi-Fi card that you are using to access the Internet. How do I do this on Ubuntu?

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• How large should I make root, home, usr, var, and tmp partitions?

  - by Teddy Okidoki

  i install ubuntu server 10.04, have 64 Gb VHD. And want to separate partitions in this mode: /dev/xvda0 p on swap (2 Gb) /dev/xvda1a0 e on /boot (128 Mb) /dev/xvda1a1 e on / type ffs (local) /dev/xvda1a2 e on /usr type ffs (local, nodev) /dev/xvda1a3 e on /tmp type ffs (local, nodev) /dev/xvda1a4 e on /var/log type ffs (local, nodev) /dev/xvda1a5 e on /var type ffs (local, nodev, nosuid) /dev/xvda1a6 e on /home type ffs (local, nodev, nosuid, with quotas) /dev/xvda2 p on /new (local, nodev, nosuid, noexec) with rest of space ~50Gb. But i'ma stuck, and don't know what size to give to each folder. Also i want to encrypt partitions. Thank you for any tips. EDIT: System need minimum size, here will be installed about 10 apps like ufw, apache,mysql, chkrootkit and so on.

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• How can I get Gnome3 to remember my session?

  - by user60381

  I am running Gnome3, but I had the same problem with Unity, on Ubuntu 12.04. I have a fairly elaborate setup I enjoy using day-to-day. A LibreOffice spreadsheet with everyone's extension numbers; a window with reference data I use regularly; two mulit-tabbed Konsole/Terminal windows with several remote systems sessions, firefox with a set of open tabs, and so on. But whenever I log out, when I return, I must set up everything from scratch. I remember the good 'ol days, when I rebooted, I'd re-log in, and all my windows came back up in the same places as they were when I logged out, and my Konsole/Term would come up with the same remote logins as before.... I'd have to re -setup some of my programs, but that's better than having to move every win into place, and resize them, etc. How do I get this functionality back?

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• Cannot resume from hibernate (s2disk)

  - by hwjp

  I seem to be able to hibernate OK using s2disk, but when I switch the laptop back on, it seems to hang half-way through the "resuming" menu. The splash screen looks healthy, it seems to be trying to resume from the correct disk, but it hangs about half-way through, with three little pips. One great help would be - where can I find the logs, and how do I get more verbose ones? There is some info in /var/log/pm-suspend.log, but that all seems fine, just lots of hibernate: success messages... How do I switch on more verbose logging in s2disk? And what about the resume process, where are the logs for that, and how can I make them more detailed? Background: the standard Ubuntu hibernate wouldn't work, so I've install uswusp and its associated tools - s2disk etc. That initially made things worse, but a fair amount of fiddling with its config, my swap size and so on seem to have got it at least seemingly successfully suspending...

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• Issue with text in a Intel 82945G Express Chipset Family

  - by user34681

  I am on Ubuntu 11.04 and the text in all the applications often looks with visual artifacts. I have installed xserver-xorg-video-intel. Attached a image so you can appreciate. lshw -c video output: *-display description: VGA compatible controller product: 82945G/GZ Integrated Graphics Controller vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 02 width: 32 bits clock: 33MHz capabilities: msi pm vga_controller bus_master cap_list rom configuration: driver=i915 latency=0 resources: irq:16 memory:dfe00000-dfe7ffff ioport:8800(size=8) memory:e0000000-efffffff memory:dfe80000-dfebffff In the text selected in green you can see the 'Online', 'File' and 'hassle' words cut.

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• screen blacks out after pressing a key on keyboard, specially enter key

  - by ahmad598

  I have natty, and i have installed kubuntu-desktop package. before installing it, everything was fine but after that, this thing happens: when I'm typing, after stroking a key, screen blacks out, fan speeds up, and i have to turn off machine by pressing power button. it just happens in many different apps (chromium, hotot, kde proxy settings, ...) and in every environment: unity, kde, gnome 2. i don't know what details i must provide with this question, and i don't like to remove my kde desktop, or re-install my ubuntu. any ideas are appreciated ;-)

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• Could not write bytes: broken pipe - looking for log of removed packages

  - by user288987

  I have a dual boot system with 12.04 and windows 7. Ubuntu worked fine yesterday but this morning upon boot I get subject. Searched the forums and unsuccessful with recovery. I tried sudo gedit /var/log/apt/history.log to see the log of removed packages, but get the following... ** (gedit:976): WARNING **: Command line 'dbus-launch --autolaunch=2d7d18532e9953bc8a2b852e00000007 --binary-syntax --close-stderr' exited with non-zero exit status 1: Autolaunch error: X11 initialization failed.\n Cannot open display: Run 'gedit --help' to see a full list of available command line options. Anyone have any suggestions for a fix? Please let me know if you require any additional information. Thanks! Mark

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• How can I solve display glitches and poor performance with ATI fglrx driver on my ThinkPad X100e?

  - by rewbs

  Hi all, I noticed that video performance on my Thinkpad X100e was very poor compared to Windows 7, so I installed the ATI fglrx proprietary drivers by using the "Additional Drivers" dialogue box. The system has an ATI Radeon Mobility HD 3200 chip. The result of installing the drivers is pretty devastatingly negative, with symptoms such as skewed content in windows, browser tabs and text boxes failing to refresh when their content changes. In fact, please excuse typos in this post, because I can't really see what I am typing. :) I also notice that HD video playback performance is no better - perhaps even worse - than prior to installing the drivers. Example of what I see: Here's the output of fglrxinfo: display: :0.0 screen: 0 OpenGL vendor string: ATI Technologies Inc. OpenGL renderer string: ATI Radeon HD 3200 Graphics OpenGL version string: 3.3.10237 Compatibility Profile Context Output of lspci | grep -i vga: 01:05.0 VGA compatible controller: ATI Technologies Inc RS780M/RS780MN [Radeon HD 3200 Graphics] I'm on Ubuntu 10.10 with kernel 2.6.35-22-generic-pae. What can I try? Many thanks, -R

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• How do I use Scale for Application-only windows?

  - by AeroCross

  If I have 3 windows opened in the same application (e.g Google Chrome) I get this in the Unity Bar: OK, that's good and expected. If I click that, it will Scale the windows that belong to that application, like this: Great! That's what I want to achieve more often by using hot corners. I did that with TopLeft and Scale All Windows, like this: How can I achieve the scale of only the application windows (like Chrome) with a hot corner (like TopRight)? I've already tried "Initiate Window Picker for Window Group" but it doesn't work. Am I missing something? Using Ubuntu 12.04 and the Scale / Scale Addons plugins.

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• Why are PPA's designed for only latest version?

  - by user210108

  Why are PPA's set to only retain the latest version of the software? I ask because I just installed Blender 2.69 and it constantly crashes on me; I then decided to just install 2.68a but found that it is IMPOSSIBLE to install an older version of software using the Ubuntu software center. I turned to possibly seeing if the PPA retained an older version but have found most PPA's remove older versions as they are designed to only offer the latest. How does this sound like a good idea? What if, for example, someone releases a version of their software that constantly crashes and the user wishes to get an older version but because the way PPA's are designed they cannot. Sounds familiar... To add insult to injury, I was easily able to role back Internet Explorer to version 9 on a machine at work today; that is just sad.

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• Have I lost my entire Windows drive and all the files?

  - by xiaohouzi79

  I previously had Heron 8.04 installed. Today I decided to upgrade. During the partition phase of the install of 10.10 it asked me what portion of the drive I should use. There were a few options: Drag the partition size to indicate what I wanted to use A button that said use entire partition A button that said use entire drive I selected use entire partition as the Windows partition did not appear on the screen I assumed this was just displaying the existing Ubuntu partition. After install I think I have wiped my entire Windows partition, I can't see it anywhere. I would appreciate some advice as to find if it really is gone forever (My stupidity I didn't back up my Windows partition which includes 3 years of baby photos).

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• How do I change local display resolution via SSH?

  - by krumble1

  I have a machine running Ubuntu Server 12.04 LTS and I'm having problems with the local monitor. The Dell flat panel I'm using only displays this message while the computer running: "Cannot Display This Video Mode" and then the information: "Optimum resolution 1280x1024 60Hz". I'm fairly new to using an operating system wholly via command line but I'm learning fast. :) I can access the server fine via SSH so using it is not a problem. However, for where it is positioned at the moment, it would be much more convenient to use the computer locally. I'm just wondering how to change the local screen resolution via SSH to something usable by my monitor. Thanks for your time! BTW: I have also tried switching displays and I still have the same problem. Also BTW: I tried putting in the xrandr command and all I get back is: Can't open display

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• Add Matlab to main menu

  - by Tim

  I was trying to add the installed matlab to the menu of Applications under Ubuntu 10.10. I clicked System-Preference-Main Menu - Programming - New Item, where I input the Matlab file .../MatlabR2010b/bin/matlab as the command, and selected the type to be "Application". Then I finished. But when i click the item in the menu of Applications, the Matlab icon shows up a few seconds and then nothing else happens. If I select the type to be "Application in Terminal" in the last step of adding Matlab to the menu of Applications, then when I click the item in the menu of Applications, there will be firstly a terminal window and then the Matlab command window. So I was wondering how to solve the problem of Matlab not starting when the type has been selected to be "Application"? Also is there a way to eliminate the terminal appearing when the type has been selected to be "Application in Terminal"? Thanks!

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• Application trying to use the wrong shared library

  - by Josh

  I'm having a problem with a program (quartus) running on my ubuntu machine. I'm getting the following error. quartus: symbol lookup error: /usr/lib/i386-linux-gnu/libXi.so: undefined symbol: XESetWireToEventCookie I have the correct libXi.so.6.0.0 file but no matter where I put it, the OS won't use it unless I apt-get remove libxi-dev, but a lot of software uses this libXi. What I want to do is add some sort of exception to the dynamic linker so that quartus uses the libXi.so that it needs and everything else still uses the one in /usr/lib/i386-linux-gnu. Thanks!

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• No such file but the file is there!

  - by user288757

  I'm trying to compile a C++ file with some includes. My main file (well I didn't make it hdf5_getters includes a file which includes the file hdf5.h, also not my design but it's a downloaded library. Every time I try to compile it I get the error message that the file hdf5.h does not exist while it clearly does. I started reading on the internet and people say it can happen because it's a 32bit binary running on a 64bit architecture. But I'm running a 32bit Ubuntu so that can't be it... I'm out of ideas, if anyone can help me please :) This is the errormessage with commands: make hdf5_getters g++ -c -Wall -std=c++0x -O2 -c hdf5_getters.cc In file included from H5Cpp.h:20:0, from hdf5_getters.cc:34: H5Include.h:17:18: fatal error: hdf5.h: No such file or directory #include <hdf5.h> ^ compilation terminated. make: *** [hdf5_getters.o] Error 1

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• PLEASE HELP! Cannot login to server after file permissions change!

  - by John

  So, I did something really stupid. Please bear with me as I am new to ubuntu server. I ran chmod -R 700 / when I was logged in as root. Now when I try to login as my normal user I immediately get kicked out. Is there anyway to log back in to the server whether it is root or whoever so that I can change the permissions? or am I totally screwed? I dont think I have root access enabled in the /etc/ssh/sshd_config file. I do have physical access to the server. I really need some help here. Thanks in advance!

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• could not save the file /usr/... permission denied (13.04)

  - by plaguedoctor

  I am running Ubuntu 13.04 and am trying to create an .sh file for conky in /usr/bin using gedit. When trying to save I get the error dialogue: Could not save the file /usr/bin/conky-start.sh You do not have the permissions necessary to save the file. Please check that you typed the location correctly and try again." From searching, I think I have to run a command in terminal to allow permission, but I couldn't find out what that is. Edit: I'm trying to create the file conky-start.sh, not change or run it. Thus far, I've opened gedit, copied and pasted some required info from the net, and I'm trying to save-as /usr/bin/conky-start.sh Perhaps I need to create the file first in terminal, then edit it? How would I do that?

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• What is the best freeware app for Windows to mount EXT4 partitions (from a GPT 4TB Disk) as RW, safely without corrupting the EXT4 partition?

  - by Bran

  My Computer is set up as Dualboot Windows and Ubuntu. I have 1 OS drive, and 1 hard drive with a /backup partition (which has all my family photos and data) and it is ext4. Also note... it is EXT4, and it is GPT, and it is 4TB size. Anyway, Windows can not mount the /backup ext4 partition. What software/freeware do you reccomend for Windows? Preferrably looking for someone with experiance using it for a long time and not have problems with EXT4 partition which is a 4TB, GPT Disk. Thank you for your advice and guidance! Always, appreciate everyones help at askubuntu, you guys are the best. Any ideas?

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• Why did 13.10 break my custom keyboard layout?

  - by con-f-use

  I was using a custom keyboard layout. Basically I modified the us-mac layout to fit my ideal of a math-heavy version of the regular us layout that also throws German umlauts into mix. It went well and worked marvelously for 6 consecutive versions of Ubuntu. Today's version Upgrade (from 13.04 to 13.10) broke that streak. I now have the usual crappy Macintosh-Layout. Now xkb just ignores my layout and all of the other changes I make in /usr/share/X11/xkb/symbols/us (tried to switch '0' and '9' everywhere and rebooted - no effect). Why is that? I suspect I have to do an extra step now for the changes to take effect or something like that. Anyone care to point me in the right direction?

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• Dual-Monitor layout and primary display with Nvidia in Gnome-Shell

  - by java4fun

  I have installed Ubuntu 14.04.1 with gnome-shell version 3.10.4. I can attach a second monitor to my laptop and it is recognized. If I configure it with the nvidia-settings at the right of my laptop then all works fine (the extention of the display works as an extention on the right, not dual). Now what I want is to have the second monitor configured over the laptop-display. When I'm not using gnome-shell, it works correct (I can drag an application from the bottom display to the top normally) but with gnome-shell I have to press Ctrl+Shift+ mouse help, and resize properly the application size. This is for me an enforcing. Is there a way to make that gnome-shell work properly with a bottom/top monitor?

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• What does /dev/null mean in a shell script?

  - by rishiag

  I've started learning bash scripting by using this guide: http://www.tldp.org/LDP/abs/abs-guide.pdf However I got stuck at the first script: cd /var/log cat /dev/null > messages cat /dev/null > wtmp echo "Log files cleaned up." What do lines 2 and 3 do in Ubuntu (I understand cat)? Is it only for other Linux distributions? After running this script as root, the output I get is Log files cleaned up. But /var/log still contains all the files.

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• How can I fix indicator's behaviour?

  - by iSmite

  I recently switched to Ubuntu 11.10 from Windows. The panel has been acting really weird lately. What happens is when I click on sound icon to change volume, the menu for Bluetooth connectivity pops up. When I try to hover over the popped up menu, the latter disappears the moment I move my mouse. It is just not one icon that has been troubling me. When I click on network icon in the panel, it pops-up the menu for Chat and then the popped-up Chat menu just disappears as soon as there is a movement of the mouse. I hope I was able to explain my situation. I am sure you must be aware of this issue. Please advise. Thanks.

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• How to keep specific old kernel on my next kernel upgrade?

  - by tvrtko

  I just updated my Ubuntu 14.04 and got a new kernel. This new kernel is not working properly for me so I booted the previous version. Let's call this good old working version "3.13.0-24.47". Now, I want to keep this "3.13.0-24.47" version until I decide to delete it manually. I want to be able to upgrade my kernel each time there is a new version in hope of getting the one which works again. Until then, I want to use the "3.13.0-24.47". I'm afraid that next update will delete my "3.13.0-24.47" version because there are only two kernel versions available at a given time on my system (/boot).

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