BЈовић's questions

Today I updated from 13.04 to 13.10. Then sudo apt-get autoremove removed all 32bit packages.

How to get them back? How do I install ia32-libs again?

This is what I get if I try to install them back :

output$ sudo apt-get install ia32-libs
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package ia32-libs is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
However the following packages replace it:
  lib32z1 lib32ncurses5 lib32bz2-1.0

E: Package 'ia32-libs' has no installation candidate

Looking at the release page, I noticed the short life of 13.04. It is only 8 months : April 2013 to January 2014.

Why is the life of 13.04 so short?

I am using gnome classical (without effects), and recently alt-tab stopped working to switch windows.

How to enable alt-tab to switch windows?

12.04 is coming soon, and I was wondering whether it is better to upgrade or completely reinstall the system. My home is in different partition from the rest, so complete reinstall would be easy to do.

So, are there any differences between upgrading the distribution and reinstalling the system^*?

^* Assuming the same packages are selected during reinstall.

I searched for googletests using muon, but it looks like ubuntu doesn't have packages for it. Do I need to install using sources?

When I press the button on the dvd player, it doesn't open.

If I press it during the boot (before starting ubuntu), it opens fine.

So, what I have to do to eject the dvd?

My kids put some bogus launcher on top bar (I have no idea how) :

How can I remove it? I get only next options : properties and launch.

I wanted to switch to Xfce (I had KDE and GNOME installed), and I did this :

sudo apt-get install xubuntu-desktop
sudo apt-get remove kubuntu-desktop
sudo apt-get remove ubuntu-desktop
sudo apt-get autoremove

but to my surprise, I could still pick gnome, kde plasma, etc during the log in.

So, how do I completely remove KDE and GNOME desktops?

I was told to use nomachine to access a remote server.

Is there anything else that I could use instead?

The remote server is already running the nomachine's server application. I would like to use an application supported by Ubuntu (for nomachine's package I had to enable a PPA, using the directions here).

I have seen this question, but that question seems to be obsolete with the 11.10 version.

Last week, I upgraded from 11.04 to 11.10. I am usually using gnome desktop clasic (without effects,also called the fail-safe), because my PC is very bad. Since the upgrade, everything is so slow. I also noticed that the temperature of the graphical chip* went from 30-40 C to 60 C, so my guess that the ubuntu 11.10 demands very powerful GPU.

So, what can be done to improve the performances of ubuntu 11.10?

Logging in using fail safe option is one thing, but it is not enough.

_{*The temperature of the GPU can be seen from the nvidia-settings under the thermal settings.}

First, I must say that I do not have PPA or any experimental packages enabled.

Just now I installed the GIMP using kpackagekit. When I tried to start it using icon in the application menu, it didn't start.

I tried running it from the terminal, and it said that it crashed with a segmentation fault.

The question is : is there anything that I can do to install (or reinstall it) properly? I am sure they wouldn't release it if it was crashing like that

Yesterday when I tried to update packages, I received a message asking me if I want to install an unsigned package. I clicked no and stopped the update.

Today I updated all packages without the message.

So, what are unsigned packages and should I install them?

• I've done a sudo apt-get update to update the package lists and I still get the error
• I am not using any PPAs

I am using KPackageKit to maintain my system, and I am trying to keep all pack up to date (but I didn't enable any experimental or beta repositories).

In my opinion such setup should not break anything, but that doesn't seams to be the case. Two weeks ago after an update, the flash player stopped working. After another update, something else.

So, the question : how to know when to update the packages, but not to break anything? Even if something broken gets in, is there a way to revert changes?

I am using openvpn to connect to the network in my company.

From time to time, the network manager daemon gets stupid, and I have to kill it. When I do it, it connect the network, but not the openvpn, and the icon to connect to the open vpn disappears.

Is there a way to restart this daemon nicely?

EDIT: To kill the daemon, I do it like this : killall -9 kded4

It used to be ctrl+alt+backspace to kill x server, but for some unknown reason, it was decided to disable that combination and use something else (I think it is right alt + printscreen +k).

So, how to enable ctrl+alt+backspace?

I have seen it can be done with installing dontzap, but I know there is a way to set that combination from system setup.

Is there a way to reset kubuntu to the initial state? Under initial state, I mean the system and all settings are as kubuntu was installed on a clean disk, but to preserve installed packages.

If possible I would like to avoid making data backup and reinstalling kubuntu.

I have a screensaver configured to activate after 5 minutes. When the time elapses, instead of activating the screensaver, my monitor turns off.

I tried playing with settings, and searching the internet, but I couldn't find anything and couldn't figure out how to solve this issue.

Can someone help?

I am connecting to the internet through a pppoe connection, but for some reason I can not connect to my modem (it's address is 192.168.1.1).

Before I set my pppoe connection, I could connect.

So, is there a way?

EDIT

The output of ifconfig is :

r@PlaviZec:~$ ifconfig
eth0      Link encap:Ethernet  HWaddr 00:13:d4:f7:02:d4  
          inet6 addr: fe80::213:d4ff:fef7:2d4/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:2811 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2801 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:2538831 (2.5 MB)  TX bytes:448591 (448.5 KB)
          Interrupt:21 Base address:0xa000 

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:28 errors:0 dropped:0 overruns:0 frame:0
          TX packets:28 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:1600 (1.6 KB)  TX bytes:1600 (1.6 KB)

ppp0      Link encap:Point-to-Point Protocol  
          inet addr:92.229.42.177  P-t-P:213.191.64.59  Mask:255.255.255.255
          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1492  Metric:1
          RX packets:2794 errors:0 dropped:0 overruns:0 frame:0
          TX packets:2741 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:3 
          RX bytes:2476277 (2.4 MB)  TX bytes:381240 (381.2 KB)

On work, I am using fedora, where a right click on desktop opens a menu, which allows opening a terminal.

Home, I have kubuntu installed. Is it possible to have the same behavior?