User:Flamelab

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KDE 4.5 DRAFT!

could you please somehow roughly outline which passages you actually changed? this might be easier instead of me looking over the whole article and looking for the differences :-) moreover i assume my recent changes are more major than yours >.< --Labello 04:20, 3 July 2010 (EDT)
I overwrote the whole semantic desktop section and troubleshooting as well. since these were my biggest changes.--Labello 06:42, 3 July 2010 (EDT)
maybe a recent screen-shot would be nice :-) --Labello 06:42, 3 July 2010 (EDT)
Summary help replacing me
KDE is a full featured desktop environment known for its well integrated applications, like Konqueror, Dolphin, Plasma, KWrite and Konsole.

Contents

KDE 4.5 Arch Linux Notes

KDE 4.5 Software Compilation is the current major release of KDE that includes a number of improvements and bug fixes. The new Arch package set for KDE makes it possible to only install those applications you like.

Important features of the Archlinux KDE SC in short:

  • Split packages; for more Information see KDE Packages.
  • You can use different Phonon backends, like Gstreamer or Xine
  • Meta packages ensure a smooth upgrade and emulate the old monolith packages for those who prefer them.

Important hints for upgraders:

  • Always check if your mirror is up to date.
  • pacman will ask you to replace all kde packages with kde-meta packages.
  • Do not force an update. If pacman complains about conflicts please file a bug report.
  • You can remove the meta packages and the sub packages you do not need after the update.
  • If you do not like split packages just keep using the kde-meta packages.
Information about upstream changes are be available here

Installing KDE 4.5 Software Compilation

Installing full KDE SC

To install the entire KDE set, first fully upgrade your system:

pacman -Syu

and then:

pacman -S kde

If you need language files:

pacman -S kde-l10n-yourlanguagehere

e.g. kde-l10n-de, for the German language.

Note: KDE 4.x is modular; you can install your preferred KDE applications without having to install an entire set of packages. See KDE Packages for more information.

Minimal Install

If you want to have a minimal installation of the KDE SC, here is an example:

pacman -S kdebase-workspace kdebase-konsole

Starting KDE

Starting KDE depends on your preferences. Basically there are two ways of starting KDE. Using KDM or xinitrc.

Using KDM (KDE Display Manager)

It is highly recommended to get familiar with the full article concerning display managers, before you make any changes. See also KDM Wiki page.

Starting KDM as a daemon

Add "kdm" (without the quotes) to daemons array in /etc/rc.conf

DAEMONS=(dbus hal syslog-ng network netfs crond ... kdm)

Starting KDM through /etc/inittab [preferable]

Edit /etc/inittab and comment out:

#id:3:initdefault:

[...]

#x:5:respawn:/usr/bin/xdm -nodaemon

Then uncomment:

id:5:initdefault:

[...]

x:5:respawn:/usr/bin/kdm -nodaemon
Note: In both methods KDM loads Xorg automatically.

Using xinitrc

The meaning and usage of xinitrc is very well described here.

Edit /home/your-username/.xinitrc. Then uncomment:

exec startkde 

After a reboot or/and login, each execution of Xorg (startx or xinit) will start KDE automatically.

Warning: By doing this you won't have restart/shutdown functions enabled in your KDE menu.
Note: If you want to start Xorg at boot, please read Start X at Login article.

Configuring

Note: Configuring KDE is primarily done in 'System Settings'. There are also a few other options available for the desktop with 'Desktop Settings' when you right click the desktop.

For other personalization options not covered below such as activities, different wallpapers on one cube, etc please refer to the Plasma wiki page.

Personalization

How to set up the KDE desktop to your personal style; use different Plasma themes, window decorations and icon themes.

Plasma Desktop

Plasma is a desktop integration technology that provides many functions from displaying the wallpaper to adding widgets to the desktop.

Themes

Plasma themes can be installed through the Desktop Settings control panel. Plasma themes define how your panels and plasmoids look like. If you like to have them installed system-wide, themes can be found in both the official repositories and AUR.

Widgets

Plasmoids are little scripted or coded KDE apps that enhance the functionality of your deskop in a yet very pleasing way, based on the Plasma technology of KDE. You are able to display system-critical information like left over disk space or monitor your network connection. The easiest way to get more widgets is by left-clicking onto a panel or the desktop:

Add Widgets -> Get new Widgets -> Download Widgets

This will present a nice frontend for kde-look.org and allows you to (un)install widgets with just one click. They are also available in the repositories.

Window Decorations

Window decorations can be changed in

System Settings -> Application Appearance -> Style

There you can also directly download and install more themes with one click and some are available on AUR.

KDE 4 Theme Integration with GTK Applications

To better integrate GTK and KDE 4 themes, you can use QtCurve.

pacman -S qtcurve-gtk2 qtcurve-kde4

Or you can download a GTK theme that matches your version of KDE here. This theme comes closer to the original Oxygen and is updated frequently.

Automatic procedure

To change the GTK theme to QtCurve or something else a few applications are available:

pacman -S lxappearance
pacman -S gtk-theme-switch2
pacman -S gtk-chtheme

Then change the theme of your choice in the respective application:

lxappearance
gtk-theme-switch2
gtk-chtheme
Manual procedure

To manually change the GTK theme to QtCurve, you need to create the file ~/.gtkrc-2.0-kde4 with the following content:

include "/usr/share/themes/QtCurve/gtk-2.0/gtkrc"
include "/etc/gtk-2.0/gtkrc"

style "user-font"
{
    font_name="Sans Serif"
}
widget_class "*" style "user-font" 
gtk-theme-name="QtCurve"

Then you need to create the symbolic link ~/.gtkrc-2.0:

ln -s .gtkrc-2.0-kde4 .gtkrc-2.0

If you want also specify a font, you can add (and adapt) the following line to the file:

 gtk-font-name="Sans Serif 9"
Icons

If you're using Oxygen icons and want a consistent look in GTK open/save dialogs, you can install an oxygenrefit2 icon theme from AUR and set it as your GTK icon theme. Add the theme to the ~/.gtkrc-2.0 file or you can use lxappearance and set it.

gtk-icon-theme-name="OxygenRefit2"

There are also a couple GTK themes built on the gtk-kde42-oxygen-theme Oxygen style that can also do this.

Icon Themes

Not many full system icons themes are available for KDE 4. You can open up System Settings > Application Appearance > Icons and browse for new ones or install them manually. Many of them can be found on kde-look.org.

Arch Linux Logo Icon in Kicker menu

Right-Click on the Kicker menu button, press "Application launcher settings" and then press the icon on the right. Then you may choose Arch Linux icon or any other icon that will replace the default one.

Fonts

If by default, the fonts in KDE look poor, try installing the ttf-dejavu and ttf-liberation packages. After the installation, be sure to log out and back in. You should not have to modify any settings in the "Fonts" panel of the KDE System Settings application.

If you have personally set up how your Fonts render, be aware that System Settings may alter their appearance. When you go System Settings > Appearance > Fonts System Settings will likely alter your font configuration file (fonts.conf). There is no way to prevent this but if you set the values to match your fonts.conf file the expected font rendering will return (it will require you to restart your application or in a few cases for you to have to restart your desktop). Note too that Gnomes' Font Preferences will also do this if you use both desktop environments.

Space efficiency

KDE is often critizised for being bloated. The user might get this perception from seeing many toolbars and pretty big scaled icons in the applications. One thing that improved the situation was the new Kwin-Theme that came with KDE SC 4.4.* with the more elegant buttons that one can also resize. KDE Apps allows to hide many toolbars, menubars and statusbars.

All sorts of *bars

Most toolbars of a program can be removed in the menubar-entry "Settings". There you often can hide the statusbar and often all toolbars. The last step should be to remove the menubar itself via Ctrl + M. If you do not want to remove any bars you can still make them smaller or remove the text via:

System-Settings -> Appearance -> Style -> Tab "Finetuning" ->  "Main toolbar text", "secondary toolbar text"

Since most aspect ratios of modern flat screens are wider than 4:3 it could be reasonable to put the toolbar at the left or right of a window to artificially stretch windows more to the monitors aspect ratio.

Plasma

There are also some settings and modifications you can apply to your plasmoids to make KDE less space wasting. For example, the "Digital Clock" wastes more space than the "Analogue Clock". The little plasma icon ("Casheew") that one can see in the panel can be hidden by locking the widgets via rightklicking onto the panel. If you have got many tasks in your task-manager you should consider using Smooth-tasks. This alternative task-manager allows you to just display the icons of a task thus using less space but still maintaining the ability of the user to distinguish the different tasks.

Install smooth-tasks from the AUR.

After installing and substituting it with the original task-manager you should have a deep look at the settings since they are much broader. one way of using the features of smooth-tasks could be to only display the icons of tasks and move the panel to the left or right of the screen. This is most usefull on widescreens. On very small screens it could be reasonable to set the bottom-panel to auto-hide completely. For netbooks there exists a special form factor to make a better use of the screen:

System-Settings -> Desktop -> Workspace -> Form factor
KWin

The windows decorations can also be resized by making the buttons in the decoration smaller thus making the whole top border smaller:

System Settings -> Appearance -> Windows -> Button size

You could also remove the side-border of all windows via:

System Settings -> Appearance -> Windows -> Border size

Networking/Printing

NetworkManager support has been added in KDE 4.5 SC. See NetworkManager for more information.

Samba/Windows support

If you want to have access to Windows services:

pacman -S samba

You may then configure your Samba shares through

 System Settings > Sharing > Samba

KDE Desktop Activities

KDE are Plasma based "virtual desktop"-like set of Plasma Widgets where you can independently configure widgets as if you had more than one screens/desktops. Since KDE 4.5, the feature of changing Desktop Activities has been simplified.

On your desktop, click the Cashew Plasmoid and on the pop-up window press "Activities".

A plasma bar will appear at the bottom of the screen which presents you the current Plasma Desktop Activities which exist. You can then navigate between them by pressing their correspondent icon.

Powersaving

KDE has integrated Powersaving service called "Powerdevil Power Management" that may adjust the powersaving profile of the system or/and the brightness of the screen (if supported).

How to enable generic powersaving

Navigate to Systemsettings > Power Management In Profile Management, in "When AC adaptor is plugged in" (or the battery option) choose "Powersave" In "Edit Profiles" > "Powersave", tick the "Enable System power saving", and then press apply.

How to enable Cpufreq based powersaving

Since KDE 4.5, Powerdevil doesn't handle CPU power schemes through Cpufreq. CPU is being used by using the hardware or/and kernel "ondemand" governor power scheme and that's the official way to have the system's power management handled, according to the guidelines by the kernel power-management devs.

Warning: Using Cpufreq in order to handle your CPU power schemes, that means, controlling it through software, IS NOT suggested for use since modern CPUs are capable of powersaving through their BIOSes. Visit this link for more info on good power management practices.

If you do want, you still can use Cpufreq for your system which is accessible through the Solid Device Framework.

So in order to do that, follow these steps:

1. You need to create a script for every Cpufreq governor you want to be used. In this example, you will now create a script to enable the powersaving governor.

Create a script in /usr/bin

 # touch /usr/bin/kde-cpufreq-powersave

Add these in the script

 #!/bin/bash
 solid-powermanagement set cpufreq powersave

Make it executable

 # chmod +x /usr/bin/kde-cpufreq-powersave

2. Install cpufrequtils

pacman -S cpufrequtils

and make sure you have your CPU's cpufreq module loaded. For more information on this, visit this article.

3. Then, in System Settings > Power Management, go to "Edit Profiles" > "Powersave", and make sure that "Enable System power saving" is enabled.

After that, press the file dialog button next to the phrase "When loading profile execute" and choose the script you have just created. Now, each time you choose the Powersaving profile through Powerdevil, Cpufreq will force the powersaving governor.

You can do the same for other profiles and governors.

System Administration

Sset keyboard layout in order switch language inputs

In order to do that, navigate to

   System Settings > Input Devices > Keyboard

There you may choose your keyboard model at first.

Note: It is preferable that, if you use Evdev, that means Xorg automatic configuration for keyboards, you should choose "Evdev-managed keyboard".

In the "Layouts" tab, you choose the languages you may want to use by pressing the "Add Layout" button and therefore the variant and the language. In the "Advanced" tab, you can choose the keyboard combination you want in order to change the layouts in the "Key(s) to change layout" sub-menu.

Terminate Xorg-server through KDE system settings

Navigate to

   System Settings > Input Devices > Keyboard > Advanced (tab) > "Key Sequence to terminate X server" submenu

and tick the checkbox.

Desktop Search and Semantic Desktop

Most users who freshly install KDE are wondering what functionality the following four pieces of software are able to offer. Most features are still somehow hidden under the hood and yet not many applications featured in the KDE SC are using these interfaces. This capter intends to first explain the features and then convince the user of the power these tools offer once properly integrated into KDE. The following sections are more or less a roughly shortened version of [this blogpost.

Soprano

Soprano is a library for QT that is able to process RDF data. This is semantic data. Semantic data is a special kind of metadata which is much more flexible than metadata you might know from MP3-Tags or Meta-Tags in HTML since RDF data more resembles the structure of a spoken sentence, thus allowing a much wider field of ways dealing with them. Soprano stores semantic data in a backend and allows low level access to this data.

Nepomuk

Nepomuk is somehow the glue between Soprano and the KDE Desktop and thus the user. Nepomuk allows to tag the files with various entries and offers an API for the applications featured in KDE SC. It is enabled by default. Nepomuk can be turned on and off in

System Settings -> "Advanced" Tab -> Desktop Search

Akonadi

Akonadi is one of the ways of getting data into Nepomuk. Its intention is to gather all kinds of PIM data from KMail, KAdressbook or Kopete. It collects chat contacts, email adresses, email attachments and email contents. First of all it feeds Nepomuk with this data but moreover does also provide a centralized accesspoint for all this data.

Strigi Search

Strigi is another way of feeding data into Nepomuk. It preverably indexes the users home-folder. Indexing means that it not only gathers filenames but also information about your music collection or tagged downloads you did with Kget. The Strigi search is also integrated into KDEs launcher which can be accessed via: Template:Keypress + Template:Keypress

By default, Dolphin has a search bar on top-right where you may type what you want to be found from Strigi's index.

Note: Strigi has implications for resource usage on your computer - CPU, memory, disk access, disk space, battery life. If Strigi is too resource-hungry for you, you can turn it off in "System Settings > Advanced > Desktop Search".

Strigi folder indexing can be configured in:

System Settings -> "Advanced" Tab -> Desktop Search

KDM (KDE Desktop Manager)

KDM Xserver file

An example configuration for KDM can be found at /usr/share/config/kdm/kdmrc. See /usr/share/doc/HTML/en/kdm/kdmrc-ref.docbook for all options.

Configuring KDM

You can visit System Settings > Login Screen and make your changes. Whenever you press "Apply", a KDE Polkit authorisation window appears which will ask you to give your root password in order to finish the changes.

= Problems while Configuring KDM as a user

If you seem not to be able to KDM settings when launching System Settings as user, press

Template:Keypress + Template:Keypress

and type

 kdesu systemsettings

In the pop-up kdesu window, enter your root password and wait for System Settings to be launched.

Note: Since you have launched it as root, be careful when changing your settings. All settings configuration in root-launched System Settings are saved under /root/.kde4 and not under ~/.kde4 (your home location).

In the System Settings window, go to Login Screen.

Phonon

What is Phonon ?

Phonon is the multimedia API for KDE 4. Phonon was created to allow KDE 4 to be independent of any single multimedia framework such as GStreamer or xine and to provide a stable API for KDE 4's lifetime. It was done for various reasons: to create a simple KDE/Qt style multimedia API, to better support native multimedia frameworks on Windows and Mac OS X, and to fix problems of frameworks becoming unmaintained or having API or ABI instability.

from Wikipedia.

Phonon is being widely used within KDE, for both audio (e.g., the System notifications or KDE audio apps) and video (e.g., the Dolphin video thumbnails).

Which backend should I choose ?

You can choose between various backends, like Gstreamer, Xine ( phonon-xine ) or VLC ( phonon-vlc ).

Troubleshooting

KHotkeys issue

Ιf khotkeys does not work, make sure you have a fully updated system first. You can also create ~/.kde4/Autostart/reloadkhotkeys.sh with contents

#!/bin/bash
(sleep 3 && qdbus org.kde.kded /modules/khotkeys reread_configuration) &

and then do a

chmod u+x ~/.kde4/Autostart/reloadkhotkeys.sh

then logout & login.

Enabling thumbnails under Konqueror and Dolphin file managers

For thumbnails of videos in konqueror and dolphin:

 pacman -S kdemultimedia-mplayerthumbs

I encounter problems with automounting (or) KDE behaves strangely for no apparent reason

Since the new X-Server 1.8 arrived in the stable repos some users got the impression that HAL (Hardware Abstraction Layer) might not be needed anymore at all. But for a fully functional KDE-Desktop it is neccessary to run hal:

/etc/rc.d/hal start

For ease of use you should add it to your daemons list in /etc/rc.conf:

DAEMONS=( .. @hal ..)

It is no problem to start HAL in the background to shave some time of boot. If you are using udev to automatically mount your drives with an udev-rule without running hal you should take note of the fact that these mounted drives will not be recognized by KDE. So no entry of this device will show up in Dolphin and Device Notifier won't notify you either.

Suspend to Disk/Ram not working

If suspend to disk/ram does not work the be sure hal is running, also make sure you are in the power group (remember to logout) Also, if you are starting KDE with startx try adding ck-launch-session to the .xinitrc, as so:

#!/bin/sh
#
# ~/.xinitrc
#
# Executed by startx (run your window manager from here)
# exec gnome-session
exec ck-launch-session startkde
# exec startxfce4
# ...or the Window Manager of your choice

This is done automatically with kdm.

Graphics' related issues

Low 2D desktop performance (or) Artifacts appear when on 2D

Make sure you have the proper driver for your card installed, so that your desktop is at least 2D accelerated. Follow these articles for more information: ATI, NVIDIA, Intel for more information, in order to make sure that everything is all right. The open source ATI and Intel drivers and the proprietary Nvidia driver should provide the best 2D acceleration.

If this doesn't solve your problems, maybe your driver doesn't provide a good XRender acceleration which the current QT painter engine relies on by default. You can change the painter engine to software based only by invoking the application with the "-graphicssystem raster" command line. This rendering engine can be set as the default one by recompiling QT with the same as configure option, "-graphicssystem raster".

Konsole is slow in applications like vim

This is a problem that is caused by slow glyph rendering. You can solve this by switching to a scalable font like Bitstream Vera Sans Mono.

Low 3D desktop performance

KDE begins with desktop effects enabled. Older cards may be insufficient for 3D desktop acceleration. You can disable desktop effects in

System Settings > Desktop 

or you can toggle desktop effects with Template:Keypress + Template:Keypress + Template:Keypress

Note: You may encounter such problems with 3D desktop performance even when using a more powerful graphics card, but using catalyst proprietary driver (fglrx). This driver is known for having issues with 3D acceleration. Visit the ATi Wiki page for more troubleshooting.

Sound problems under KDE

ALSA related problems

Note: First make sure you have alsa-lib and alsa-utils installed.
"Falling back to default" messages when trying to listen to any sound in KDE

When you encounter such messages:

The audio playback device <name-of-the-sound-device> does not work.
Falling back to default

Go to

System Settings > Multimedia

and set the device named "default" above all the other devices in each box you see.

I cannot play mp3 files when having Gstreamer backend in Qt Phonon

That can be solved by installing gstreamer0.10-plugins

 pacman -S gstreamer0.10-plugins

You can also change the backend used by Phonon, by installing the phonon-xine

 pacman -S phonon-xine

if you encounter problems that are not solved after installing gstreamer plugins. Then choose Xine in

 System Settings > Multimedia > Backend (tab)

(it may have been autoselected after installing phonon-xine)

Amarok "waits" before playing any track

If you have encountered this error, the problem is backend specific. In order to solve this problem, change Amarok's backend from gstreamer to xine.

OSS4 related problems

If you have OSS4 installed and encounter any problems you should be aware that developers of Kmix are still integrating OSSv4 support. There is an AUR package that is still experimental. Arch uses phonon with the Gstreamer backend that should work for most applications. Alternately you could try phonon with Xine.

Arch linux specific packaging issues

Due to some changes on the packages or pacman problems, there could be some problems during upgrading. Please read the sections below, if you have a problem.

I wanted a minimal installation of KDE. After I installed some packages and logged in KDE, there are no panels

If you wanted a minimal installation of KDE, logged in, heard the login sound but nothing else happened, you may not have installed the Plasma binaries. These are included in

  kdebase-workspace

Install this package and restart Xorg.

I want a fresh installation of KDE for my system. What should I do ?

Just rename the settings directory of KDE (just in case you'll need a backup later):

mv ~/.kde4 ~/.kde4-backup

Plasma desktop behaves strangely but I do not know what to do

Plasma issues are caused mainly by unstable plasmoids or plasma themes. First, find which was the last plasmoid or plasma theme you had installed and disable it or even remove it. If you cannot find the problem, but you do not want all the KDE settings to be lost, do:

rm -r ~/.kde4/share/config/plasma*

This command will delete all plasma related configs of your user and when you will relogin into KDE, you will have the default settings back.

Other KDE projects

The Chakra Project

Warning: Chakra Project may soon split from Arch's main system. You should be informed on Chakra Project's news and devs' decisions on Chakra Project website.

Split KDE packages

The Chakra Project is a community-based modular version of KDE 4 and Live CD project, which includes a number of UI enhancements for KDE 4.x. Visit the Chakra Project Wiki main page for more information.

Chakra Project Arch Live CD

The Chakra Project also provides a full featured Live CD, which has the latest stable KDEmod4 packages included. You may visit the Chakra Project Live CD webpage in order to find more information.

Passing from KDEmod to [extra]'s KDE

Note: You do have instructions for passing from [extra]'s KDE4 to KDEmod4 here.

Both flavours of KDE provide the same Desktop Environment, so if you install the one or the other, in the same upstream version, there should not be any problem regarding plasmoids, themes, styles or any KDE related application.

So, if you want, for any reason, to pass from KDEmod to [extra]'s KDE, do:

 pacman -Rd kdemod

OR

 pacman -Rd kdemod-uninstall

and it should be removed, but with the -d argument, the KDE dependent packages are not uninstalled, but only the Desktop Environment. But, if you want to completelly remove any KDEmod specific application/plasmoid/style etc too, do

 pacman -Rcns kdemod

and then make sure that everything has been uninstalled:

 pacman -Q | grep kde
Note: If you want to use the same KDE specific settings from the previous KDEmod installation, move or rename ~/.kdemod4 to ~/.kde4

After this, you may have KDEmod uninstalled.

Then, follow this.

KDE unstable

KDEmod testing/unstable

You may visit this webpage and see which repos can you add in pacman.conf in order to test the KDEmod unstable packages.

KDE unstable (snapshot)

Unofficial kde-unstable

The member ProgDan has created a repo where he uploads the testing KDE packages when a new upstream snapshot is out. You may visit this topic for more information.

Semi-official kde-unstable

When KDE is reaching beta or RC milestone, KDE "unstable" packages are uploaded to the [kde-unstable] repo.

You may add it by adding:

[kde-unstable]
Include = /etc/pacman.d/mirrorlist

in /etc/pacman.conf

They stay there until KDE is declared stable and passes to [extra].

Make sure you make bug reports if you find any issues.

Read this section in the wiki as well.

KDE Legacy

Downgrading to KDEmod3 from KDE 4

For those people who decide that KDE 4 is still not yet "ready" for them, there is a website about how to downgrade to a version of KDE 3.5 called kdemod3:

Warning: There have been issues reported regarding Libjpeg7, that caused KDEmod3 to behave strangely. In order to solve that, install libjpeg6 libpng12 from AUR. The libs libjpeg6 and libpng12 can be safely installed along side the current libraries. You will also want to update poppler-qt3 from AUR. The only conflict you will find is a conflict between poppler and poppler-qt3 during poppler updates. poppler-qt3 is a dependency for the kdemod3-kdegraphics-kpdf package, but as a work-around you can simply remove poppler-qt3 with the --nodeps flag, complete the Arch update of poppler and then reinstall poppler-qt3. More info here

Warning: KDE 3 is no longer maintained and supported by the KDE developers. KDEmod3 is no longer maintained by the Chakra Projects developers. Use it on your own risk, regarding any bugs, performance issues or security risks.

Unofficial community repository for KDEmod3

In this thread you may find info on a rebuild of the unsupported KDEmod3.

Bugs

Common bugs

If you think you found something that seems like bug, please see Common_Issues and regarding that: KDE 4 config files are usually located at

~/.kde4/share/config/

and for app-specific configs

~/.kde4/share/apps/

Distro and Upstream bug report

It is preferrable that if you find a minor or serious bug, you should visit the Arch Bug Tracker or/and KDE Bug Tracker in order to report that. Make sure that you be clear on what you want to report.

If you have any issue and you write about in on the Arch forums, first make sure that you have FULLY updated your system using a good sync mirror (check here) or try reflector.

External Links