Kevin's Blog

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Date: 3 May, 2009

Enable Ctrl+Alt+Backspace Again

Ctrl+Alt+Backspace Disabled

As stated in the Ubuntu 9.04 release notes, Ctrl-Alt-Backspace key combination to restart Xorg is disabled.

Ctrl-Alt-Backspace disabled by default in Xorg

The Ctrl-Alt-Backspace key combination to force a restart of X is now disabled by default, to eliminate the problem of accidentally triggering the key combination. Users who do want this function can enable it in their xorg.conf, or by running the command dontzap --disable.

Enable Ctrl+Alt+Backspace Again

Ubuntu Linux 9.10 Karmic Koala

This part is added on the 23rd of November in 2009 as in the 9.10 version, enabling Ctrl+Alt+Backspace is different from doing it in the 9.04 version.
If you are using Ubuntu Linux 9.04 Jaunty Jackalope, please scroll down to skip this part then you can find one for Jaunty Jackalope.

* System -> Preferences -> Keyboard
* System -> Preferences -> Keyboard

Select the 'Layouts' tab -> Click the 'Layout Options' button
* Select the ‘Layouts’ tab -> Click the ‘Layout Options’ button

Click the 'Key sequence to kill the X server' to expand it -> Check the 'Control + Alt + Backspace' option -> Click the 'Close' button
* Click the ‘Key sequence to kill the X server’ to expand it -> Check the ‘Control + Alt + Backspace’ option -> Click the ‘Close’ button

Done!!!

Ubuntu Linux 9.04 Jaunty Jackalope

* Open the /etc/X11/xorg.conf file and add

* Or simply use dontzap.
* If it is not installed already,

* Use the dontzap command to enable Ctrl+Alt+Backspace

This acually adds

to the /etc/X11/xorg.conf file.

* After it is done, make sure to log out & in for the change to take effect.

* To enable the “DontZap” option again,

* More information about the DontZap option.

http://www.x.org/archive/X11R6.8.0/doc/xorg.conf.5.html#sect4

This disallows the use of the Ctrl+Alt+Backspace sequence. That sequence is normally used to terminate the Xorg server. When this option is enabled, that key sequence has no special meaning and is passed to clients. Default: off.

Change Back to Previous Update Notification

According to the Ubuntu 9.04 release notes, there is a change in the update notification.

Change in notifications of available updates

Ubuntu 9.04 introduces a change to the handling of package updates, launching update-manager directly instead of displaying a notification icon in the GNOME panel. Users will still be notified of security updates on a daily basis, but for updates that are not security-related, users will only be prompted once a week.

Users who wish to continue receiving update notifications in the previous manner can restore the earlier behavior using the following command:

As it says, this can be changed back to the previous style with the following command.

or through the Configuration Editor

Install the Configuration Editor if it is not already installed.

Install the Configuration Editor if it is not already installed.



Open the Configuration Editor

Open the Configuration Editor
Applications -> System Tools -> Configuration Editor



Expand <code>apps</code> category

Expand the apps category



Click the <code>update-notifier</code> to select it.

Click the update-notifier to select it.
The configuration details of it appears on the right hand side



Uncheck the value of the <code>auto_launch</code> key.

Uncheck the value of the auto_launch key.
Close the Configuration Editor
* Optional: regular_auto_launch_interval can be changed for more or less frequent notification



Update Notifier will appear when there are available updates instead of the update manager directly launched.

Update Notifier will appear when there are available updates instead of the update manager directly launched.


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