Ubuntu Questions & Answers

Every time I turn on my computer, I see a message saying something like:

Your battery may be old or broken.

I am already aware that my battery is bad. How do I suppress this message?

Answers (4)

How can I set the Software Center to allow non-root users to install stuff from the Ubuntu repos without having to type in their password?

I'm fully aware of the security implications, and I am willing to take the risk. Fedora 12 shipped with something like this. (By modifying the PolicyKit configuration, I believe)

Answers (4)

What are some alternatives to upgrading without using the standard upgrade system? Suppose for example that I wanted to upgrade an Ubuntu installation on a machine with a poor Internet connection. What would my options be? Could I just use a standard Ubuntu disk to upgrade this machine? If I already have a standard Ubuntu disk and want to use that, could I do a clean install without wiping data?

Answers (2)

How to set up a headless server?

asked Jul 28 2010 19:23 on ubuntu

I have a ubuntu development server at work. It is an old rack server that is located somewhere in the company's dungeon, where nobody ever goes. The only way it can work is as a so-called headless server (i.e. with no monitor/keyboard connected and only accepting network connections).

Obviously, if you just need terminal access ssh is more than enough. I, however, would also like to connect to the graphical interface from time to time. At the moment I am using the built in VNC functionality but I am pretty sure this is neither the most efficient nor the most secure way of approaching this issue.

I have done a bit of research on the issue but failed to come to any definite conclusions. I read about trying to forward the X environment over ssh, which would at least solve my security concerns. Can anyone share their experiences in setting this up? Is there any other way that might be worth looking at?

I almost exclusively connect to this server from a Windows machine. I don't know if that might be a problem for some of the methods suggested.

Answers (8)

How do I run a successful Ubuntu Hour?

asked Jul 28 2010 19:24 on ubuntu

I'm taking my be-stickered laptop to a coffee shop tonight for an Ubuntu Hour. I've let a bunch of local LUG people know about it. How can I ensure people come away from it feeling like the experience was valuable? Is there something you've done that was particularly successful?

There is a wiki page about Ubuntu Hours which is very helpful. I'm interested in collecting best practices from the community.

Answers (6)

I started with Ubuntu Karmic, and wanted to try KDE. So I installed kubuntu-desktop. Then I wanted to see how XFCE progressed, so I installed xfce4. I now have Kubuntu with an XFCE splash and login.

How do I (safely) purge XFCE and just have the Kubuntu splash / login screen, or am I stuck with frank-en-buntu?

Answers (4)

How do I enable automatic updates?

asked Jul 28 2010 19:26 on ubuntu

Update Manager is constantly offering me updates (e.g. security fixes, updates from PPAs).

How can I tell my Ubuntu installation to automatically download and install updates whenever they become available?

Answers (5)

How do I install Adobe Flash player?

asked Jul 28 2010 19:27 on ubuntu

I have had significant problems with watching flash video in 64-bit Ubuntu. Does anyone know of a good way to get flash running on the platform?

Answers (18)

How can I make Ubuntu check for updates less often?

asked Jul 28 2010 19:29 on ubuntu

I'd like to have Ubuntu not check for updates as often. How do I accomplish this?

Answers (4)

I've followed the steps outlined in this HowTo.

Right after I log in to Gnome I can move the mouse back and forth but as soon as the task bar loads, the mouse becomes jailed in the screen its in (can't move between screens).

This is my xorg.conf:

 Section "ServerLayout"
            Identifier     "Layout0"
            Screen      0  "DisplayLinkScreen" 0 0
            Screen   1  "Screen0" LeftOf "DisplayLinkScreen"
            InputDevice    "Keyboard0" "CoreKeyboard"
            InputDevice    "Mouse0" "CorePointer"
            Option     "Xinerama" "0" #Could not get this to work it has to be disable

Section "Files"
 ModulePath   "/usr/local/lib/xorg/modules/drivers"
 ModulePath      "/usr/lib/xorg/modules/drivers"
 ModulePath      "/usr/local/lib"

 ModulePath   "/usr/lib/xorg/modules"
 FontPath     "/usr/share/fonts/X11/misc"
 FontPath     "/usr/share/fonts/X11/cyrillic"
 FontPath     "/usr/share/fonts/X11/100dpi/:unscaled"
 FontPath     "/usr/share/fonts/X11/75dpi/:unscaled"
 FontPath     "/usr/share/fonts/X11/Type1"
 FontPath     "/usr/share/fonts/X11/100dpi"
 FontPath     "/usr/share/fonts/X11/75dpi"
 FontPath     "/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
 FontPath     "built-ins"

Section "Module"
 Load  "dbe"
 Load  "dri"
 Load  "dri2"
 Load  "extmod"
 Load  "glx"
 Load  "record"

Section "InputDevice"
 Identifier  "Keyboard0"
 Driver      "kbd"

Section "InputDevice"
 Identifier  "Mouse0"
 Driver      "mouse"
 Option     "Protocol" "auto"
 Option      "Device" "/dev/psaux" 
 # Option     "Device" "/dev/input/mice"
 Option     "ZAxisMapping" "4 5 6 7"

Section "Monitor"
 Identifier   "Monitor0"
 VendorName   "Monitor Vendor"
 ModelName    "Monitor Model"

Section "Device"
        ### Available Driver options are:-
        ### Values: <i>: integer, <f>: float, <bool>: "True"/"False",
        ### <string>: "String", <freq>: "<f> Hz/kHz/MHz"
        ### [arg]: arg optional
        #Option     "NoAccel"             # [<bool>]
        #Option     "SWcursor"            # [<bool>]
        #Option     "ColorKey"            # <i>
        #Option     "CacheLines"          # <i>
        #Option     "Dac6Bit"             # [<bool>]
        #Option     "DRI"                 # [<bool>]
        #Option     "NoDDC"               # [<bool>]
        #Option     "ShowCache"           # [<bool>]
        #Option     "XvMCSurfaces"        # <i>
        #Option     "PageFlip"            # [<bool>]
 Identifier  "Card0"
 Driver      "intel"
 VendorName  "Intel Corporation"
 BoardName   "Core Processor Integrated Graphics Controller"
 BusID       "PCI:0:2:0"
 Option     "DPMS"

Section "Screen"
 Identifier "Screen0"
 Device     "Card0"
 Monitor    "Monitor0"
 SubSection "Display"
  Viewport   0 0
  Depth     1
 SubSection "Display"
  Viewport   0 0
  Depth     4
 SubSection "Display"
  Viewport   0 0
  Depth     8
 SubSection "Display"
  Viewport   0 0
  Depth     15
 SubSection "Display"
  Viewport   0 0
  Depth     16
 SubSection "Display"
  Viewport   0 0
  Depth     24

Section "Monitor"
    Identifier     "DisplayLinkMonitor"
Section "Device"
    Identifier  "DisplayLinkDevice"
    Driver  "displaylink"
    Option   "fbdev" "/dev/fb0"
Section "Screen"
    Identifier      "DisplayLinkScreen"
    Device          "DisplayLinkDevice"
    Monitor         "DisplayLinkMonitor"
    SubSection "Display"
        Depth       24
        Modes       "1920x1200" "1920x1080" "1680x1050" "1600x1200" "1440x900" "1366x768" "1280x1024" "1280x960" "1280x800"  "1280x768"  "1152x864" "1024x768" "800x600" "640x480" 

Any help would be appreciated. I'm so close to getting this to work!

Answers (3)

Where should I install sagemath?

asked Jul 28 2010 19:30 on ubuntu

Sage's installation instructions basically tell me to just untar it and run it from wherever I'd like. Not being experienced with the Linux way of where things should go in the filesystem, I'm kind of at a loss where I should best put it. Putting it somewhere in my home directory feels wrong.

Where would you extract it to? /opt?

Answers (3)

Remove online status menu, but keep the logout menu?

asked Jul 28 2010 19:32 on ubuntu

In the upper right panel there is by default a drop down menu where you can set your online status, interact with Ubuntu One, etc. It is placed right next to the drop down menu which lets you logout, reboot, shutdown etc.

For me personally I have no use for the online status menu, so I usually remove it. The problem is that it seems to belong to the same panel applet as the actually wanted logout menu, since that menu too disappears. I believe we are talking about the "Indicator Applet Session".

Is there some way I can hide or disable the online status menu, but still keep the neighboring logout menu?

I am running Ubuntu 10.04.

Answers (1)

Sane path to distribution upgrades

asked Jul 28 2010 19:35 on ubuntu

I'm using Hardy (server) on quite a few machines and I'd like to upgrade to the latest LTS. Is it safe to edit my sources.list file to just point to the new LTS, or should I do a succession of dist upgrades until I reach the latest LTS?

Answers (2)

We have installed Ubuntu desktop edition on our development server. Now that we have it in a data center we would like to strip it down to a server edition.

Is there an easy way of doing so rather than just going in and uninstalling packages by hand?

Answers (3)

What's the easiest way to set up a LAMP stack?

asked Jul 28 2010 19:37 on ubuntu

I set up a new VPS instance of Ubuntu and am wondering what the easiest way is to get up and running with a basic LAMP stack (i.e. which packages are required, which configuration options need to be tweaked, if any, etc.).

Answers (16)

Hello we have installed an ubuntu desktop edition on our dev server. I was wondering if there is any noticeable performance loss compared to the server edition.

Answers (5)

  • Does encrypting my home folder make my computer more secure?
  • Do I have to enter my password more if my home folder is encrypted?
  • What else should I know about encrypting my home folder?

Answers (5)

I have a VPS set up with Ubuntu 10.04 running exim4 as the MTA. The machine name itself is something easily recognizable to us (in this case, 'Fermat'), but the machine itself is responsible for serving up one of our domains (i.e. www.example.com).

When generating an email from exim, the email headers are reporting the server name (Fermat) instead of the domain name (example.com).

Is there a way to 'force' exim to report the server name as example.com without changing the machine's host name?

Answers (2)

Resetting gnome panel

asked Jul 28 2010 19:41 on ubuntu

How does one reset the gnome panel to the initial state?

During use, gnome panel applets move and get replaced with the ones users like. After some time the panel becomes so cluttered that it requires a cleanup. The easiest way would be to reset the panel to the original state that it was in after install. Is there an easy way of doing that?

Answers (4)

KATE keeps forgetting I have the shell plug-in enabled

asked Jul 28 2010 19:42 on ubuntu

I'm using Kubuntu (Karmic) and KATE is my favorite editor. I don't enable many plug-ins, but I really like the inline shell.

The problem is, across re-starts, KATE seems to forget that I enabled this plug-in. I've checked across all sessions and the behavior is the same.

Is there some easy way to fix this?

Answers (1)