Difference between revisions of "GNOME tips"

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[[Category:Desktop environments (English)]]
#REDIRECT [[GNOME/Tips and tricks]]
[[Category:HOWTOs (English)]]
{{i18n|GNOME Tips}}
==Configuration Tips==
===Add/Edit GDM Sessions===
Each session is a *.desktop file located at /usr/share/xsessions.
'''To add a new session:'''
1. Copy an existing *.desktop file to use as a template for a new session:
$ cd /usr/share/xsessions
$ sudo cp gnome.desktop other.desktop
2. Modify the template *.desktop file to open the required window manager:
$ sudo nano other.desktop
Alternatively, you can open the new session in KDM which will create the *.desktop file. Then return to using GDM and the new session will be available.
If your gnome applications seem sluggish and gnome hangs at start-up after killing the previous session, it's likely you haven't set your /etc/hosts file correctly and your /etc/hosts file includes:      localhost.localdomain    localhost      '''YOURHOSTNAME'''
Then run "<code>/bin/hostname YOURHOSTNAME</code>" and "<code>/sbin/ifconfig lo up</code>" as root.
See also [http://wiki.archlinux.org/index.php/Configuring_network]
===Slow Performance===
Due to an improper coded GNOME drawing library, some actions in GNOME can slow the system. If the theme icons are in SVG format, they make the system slower. A very fast improvement is to either use icons in PNG format or to convert the used icons into the PNG format.
===Default applications===
You may want to configure system-wide default applications and file associations. This is extremely useful when you have some KDE applications installed, but still prefer a GNOME ones to be launched by default.
To do that you can install [http://aur.archlinux.org/packages.php?ID=23170 gnome-defaults-list] from AUR. It will place your configuration file at /etc/gnome/defaults.list.
If you want to do everything manually, create /usr/share/applications/defaults.list with the following format:
[Default Applications]
===Better Video Performance===
Some users report that, if they move the player window while playing a video file, a blue border appears around the video while it is moving. If you experience this, go to Desktop->Preferences->Multimedia Systems Selector, and under video change the "Default Sink" to "XWindows (No Xv)". When you click test, the blue border should be gone and on the whole, video should perform better.
'''Note:''' This no longer applies to Gnome 2.20 and later ([[User:Evanlec|Evanlec]])
===Fonts Seem Skewed===
You can alter the DPI of your fonts in Gnome with Right-click on the desktop>change desktop background>fonts>details>Resolution
Resolution: [96] dots per inch
On my x86_64 system, the default was set to 89 dots per inch for some reason. I upped it to 96 and everything looks 'normal' again.
===Change the Default Background Image===
The default background is that zoomed in picture of a green leaf.  It appears for newly created users, but more importantly, this is the image shown when the screen is locked.  As of 25-Apr-2009, you can find this image here
To change it, simply copy your favorite image to this location (as root) and rename it.
===Make Shell Windows Open to a A Larger Size===
Once you add a launcher for your gnome-terminal, you can modify it such that the terminal is larger than the standard.
Right-click the launcher>properties.  Now under the "Command" section, add the following
Command: gnome-terminal --geometry 105x25+100+20
==Misc Tips==
===Screen Lock===
#Make sure that dbus is running (probably a good idea to add it to the daemons array in rc.conf).
#Install xscreensaver<pre># pacman -S xscreensaver</pre>
#Go to Desktop -> Preferences -> Screensaver
#Enable one or more screensavers
#Lock Screen will now start your screensaver and require your password to stop it.
'''or''' you can install gnome-screensaver:
# pacman -S gnome-screensaver
Also you can find [http://ubuntuforums.org/showthread.php?t=195557 here] how to replace gnome-screensaver with xscreensaver.
===Unlock Gnome-keyring on Login===
In /etc/pam.d/gdm, add lines like this at the end:
auth            optional        pam_gnome_keyring.so
session        optional        pam_gnome_keyring.so  auto_start
In /etc/pam.d/gnome-screensaver, add a line like this:
auth        optional    pam_gnome_keyring.so
In /etc/pam.d/passwd, add a line like this:
password        optional        pam_gnome_keyring.so
'''Easier way:''' Install SEAHORSE with "<code>pacman -S seahorse</code>". Now you find under "Applications-> Accessories-> Password and Encryption Settings" a nice GUI where you can set for the keyring "Automatically unlocked when user logs in".
===Nautilus Tips===
Get a certain path in spatial view? Just press:
Control + L
====Change Browser Mode (Spatial View)====
#Start gconf-editor
#Browse to apps/nautilus/preferences
#Change the value  of "always_use_browser" (it's a yes/no value and should be visible as a checkbox or say "false", for the later change the value to "true")
Or you can do this through the preferences:
#In a Nautilus window go to Edit>>Preferences
#Change to the Behaviour tab
#Check (or uncheck) Always Open in Browser Windows
====Music Information Columns in List View (bitrate etc.)====
Nautilus lacks the abillity to display metadata for music files in list view mode. A Python script was written to add columns for:
*Track Title
First, install the requirements.
sudo pacman -S mutagen
And, from AUR, [[http://aur.archlinux.org/packages.php?ID=8295 python-nautilus]]
wget http://aur.archlinux.org/packages/python-nautilus/python-nautilus.tar.gz
tar -zxvf python-nautilus.tar.gz
cd python-nautilus
sudo pacman -U *.pkg.tar.gz
Now, create a directory called ''python-extensions'' in ''~/.nautilus''. Place the following script, named bsc.py, in this newly created folder. You may download the script here: [[http://stefanwilkens.eu/bsc.py bsc.py]] (please drop --[[User:Stefanwilkens|stefanwilkens]] a line if this goes down)<br>
Mirror: [[http://kclkcl.webege.com/files/bsc.py bsc.py]]
Restart nautilus. You can now configure this new functionallity in Edit -> Preferences -> List Columns
==== Stop Nautilus drawing the desktop ====
You need to open the ''gconf-editor'':
apps>nautilus>preferences untick "show_desktop"
In breezy you also need to go to:
desktop>gnome>background and untick "draw_background"
===Speed Up Panel Autohide===
====panel_show_delay / panel_hide_delay====
If you find that your panels are taking too long to appear/disappear when using the Panel Autohide feature, try this;
# Start gconf-editor
# Browse to /apps/panel/global
# Set panel_hide_delay and panel_show_delay to more sensible (integer) values. Note that these values represent milliseconds!
The default panel_hide_delay of 500 works well in most cases, but the panel_show_delay default of 500 is horribly slow. After experimenting, a panel_show_delay between 100-200 seems much better.
====Panel animation_speed====
Now that the panel show/hide delay has the panels beginning to appear in a reasonable length of time, why does it take the panel so long to actually pop up? There is one more setting you need to add/change to make the panel behavior crisp. The setting: '''animation_speed'''  This setting can be applied globally or on a per-panel basis just like the panel_show_delay and panel_hide_delay. The official description is:
The speed in which panel animations should occur. Possible values are slow, medium and fast. This key is only relevant if the enable_animations key is true.
To apply globally, just add or change the animation_speed key as a (string) value in:
* /apps/panel/global
To apply the setting on a per-panel basis, just add/change the key in, for example:
* /apps/panel/toplevels/bottom_panel_screen0/  (usually the default name for the bottom panel)
* /apps/panel/toplevels/panel_0/  (usually the default name for the first additional panel)
'''Note:''' the key panel_amination_speed is deprecated, use: animation_speed.
===GNOME Menu Tips===
====Speed Tweak====
You can remove the delay in GNOME menus by running this command:
echo "gtk-menu-popup-delay = 0" >> ~/.gtkrc-2.0
Or just add "<code>gtk-menu-popup-delay = 0</code>" to .gtkrc-2.0
However, this setting is reported to crash banshee, and possibly other programs.
====Menu Editing====
Most Gnome users complain about the menu. Changing menu entries system-wide or for one or several users alone is poorly documented.
=====User menus=====
Recent versions of Gnome (ie, v2.22) have a menu editor in which you can de-select menu entires, but not add new menu entries. Right-click on the menu panel and select Edit Menus. Unchecking the box next to a entry will prevent it from displaying.
To add new menu entries, create a .desktop file in the $XDG_DATA_HOME/applications directory (most likely $HOME/.local/share). A sample .desktop file can be seen below, or take a look at [http://library.gnome.org/admin/system-admin-guide/2.22/menustructure-desktopentry.html.en|the Gnome documentation].
Or install Alacarte, which makes it easy to create, change and remove menu entries with a GUI. Do this with:
# pacman -S alacarte
=====Group menus, System menus=====
You will find common gnome menu entries as 'appname.desktop' objects inside one of the $XDG_DATA_DIRS/applications directories (most likely /usr/share/applications). To add new menu items for all users, create an 'appname.desktop' file in one of those directories.
* Edit one of them to fit your needs for a new application, then save it.
* Save it as a menu entry for all users <br> Most often, you will set this files permissions to 644 (root: rw group: r others: r), so all users can see it.
* Save it as a menu entry for a group or user alone <br> You may also have different user permissions; for example, some menu entries should only be available for a group or for one user.
Here is an example how a Scite menu entry definition file could look:
[Desktop Entry]
Comment=SciTE editor
====Change the Gnome Foot Icon to an Arch Icon====
{{Note|Thanks to arkham who posted this method in [[http://bbs.archlinux.org/viewtopic.php?id=74881 this forum post]] which I have typed up here.}}
*Download [[http://img23.imageshack.us/img23/9679/starthere.png this Arch icon]] (filename is {{Filename|starthere.png}})
*Alternatively get the artwork package using "pacman -S archlinux-artwork", this puts all artwork in the /usr/share/archlinux directory, and resize your desired logo to 24x24px
*Figure out which icon set you're using (right-click desktop>Change Background Image>Theme>Customize>Icon).  For example, Crux, *GNOME, High Contrast, High Contrast Inverse, Mist, etc.)
*Now make a backup of your current gnome icon in the correct directory.  In the example below, I'm using the GNOME icons but adjust the directory structure accordingly for your icon set:
# mv /usr/share/icons/gnome/24x24/places/start-here.png /usr/share/icons/gnome/24x24/places/start-here.png-virgin
*Copy {{Filename|starthere.png}} you just downloaded to the same directory renaming it start-here.png
# cp /path/to/starthere.png /usr/share/icons/gnome/24x24/places/start-here.png
*Restart your gnome-panels and the new Arch logo should be displayed
$ pkill gnome-panel
'''Note: '''To get this to work (gnome 2.28) I had to delete the icon-theme.cache file in /usr/share/icons/gnome
====Change the Gnome Foot Icon to an Arch Icon (without root access)====
*Figure out which icon set you're using (right-click desktop>Change Background Image>Theme>Customize>Icon).  For example, Crux, *GNOME, High Contrast, High Contrast Inverse, Mist, etc.)
*Duplicate that icon set's directory structure for 24x24/places in your home directory under .icons
$ mkdir -p ~/.icons/gnome/24x24/places
*Download [http://img23.imageshack.us/img23/9679/starthere.png this Arch icon] into that directory as 'start-here.png'
$ wget -O ~/.icons/gnome/24x24/places/start-here.png http://img23.imageshack.us/img23/9679/starthere.png
*Alternatively get the artwork package using "pacman -S archlinux-artwork", this puts all artwork in the /usr/share/archlinux directory, and resize your desired logo to 24x24px and copy it into that directory as 'start-here.png'
*Restart your gnome-panels and the new Arch logo should be displayed
$ pkill gnome-panel
'''Note: '''To get this to work (gnome 2.28) I had to delete the icon-theme.cache file in /usr/share/icons/gnome
====Custom Icon using gconf-editor====
# Open the configuration editor in gnome (it should be in System Tools of your main menu) or run <code>gconf-editor</code>
# In the configuration editor go to apps > panel > objects > find the object for your menu (an easy way to spot the correct object is that it will have "Main Menu" in the tool tip section).
# Set the path to your icon in the "Custom_Icon" field.
# Check "Use_Custom_Icon" a little ways down.
# The panel should reload momemtarily, if not, open a terminal window and type:
$ killall gnome-panel
====Removing default icons from desktop====
I like to keep my desktop clean, and perhaps someone else too. So here is how to remove home folder, computer and trash from desktop:
# Open terminal
# On terminal type: gconf-editor
# Configuration Editor opens. From there navigate to: apps --> nautilus --> desktop
# Untick all the icons you dont want to see
# You are done, the icons should dissappear immeadiately
=== Disabling scroll in taskbar ===
For years there is "bug" in Gnome taskbar: the mouse scroll switches the windows. The annoying feature if you have a good mice turns to be a real pain if you have the touchpad. It is impossible to scroll precisely using touchpad, so if you accidentally touch it when your mouse is on the taskbar, then all the windows will flash/switch wildly. There is no setting in gconf/preferences, that can disable this functionality. This is true for KDE 3, I don't know if problem persist in KDE 4. The solution was to install xfce4-panel, which hasn't scrolling at all and looks like default gnome panel. The bug is better described here [https://bugs.launchpad.net/ubuntu/+source/gnome-panel/+bug/39328].
This bug will be probably never fixed, but we have ABS, so we can build custom software. Install [[ABS]] (+70Mb), then
cp -r /var/abs/extra/libwnck /home/{your name}/Desktop/somewhere
Navigate to that dir, then
makepkg --nobuild
This will download and extract the sources. Go to src/libwnck-{version}/libwnck. Edit tasklist.c, search for "scroll-event". You will see somethign like
g_signal_connect(obj, "scroll-event", G_CALLBACK(wnck_tasklist_scroll_cb), NULL);
This line enables scroll-event handler, comment the line out (place /* before and */ after the line). Now go back to /home/{username}/Desktop/somewhere and
makepkg --noextract --syncdeps
You will need [[sudo]] to be able to install missing dependencies (intltool), but you can always 'pacman -S' them apart if you don't want --syncdeps automatically. The --noextract option tells makepkg to not extract sources and use existing src/
pacman -U libwnck-{version}.pkg.tar.gz
Then logout/login, enjoy. Delete dir with the sources from you desktop, you may also uninstall abs if you want. Next step will be to add gconf option, but I will leave this for Gnome gurus. I just don't need this "feature", not even if I use the mouse (alt+tab is better anyway).
===Custom transitioning background===
This will create a transitioning background similiar to the "cosmos" background found in the [[GNOME#Installation|gnome-backgrounds]] package. There are two ways to do this.
{{Note|The image filenames must not have spaces in them.}}
You can create an XML file similiar to the one created by gnome-backgrounds in "/usr/share/backgrounds/cosmos/".
<!-- The first section set an arbitrary start time. -->
Note that the <duration> tag sets each image as the background for 1795 seconds, or 29 minutes and 55 seconds, and the <transition> then takes 5 seconds. You can add any number of images as long as the last one transitions back to the first (if you want a full loop). Once completed, the XML file can be added to GNOME under System > Preferences > Appearance > Background tab > Add.
There is also a script which automates this process:
#This script creates xml files that can act as dynamic wallpapers for Gnome by referring to multiple wallpapers
#Coded by David J Krajnik
if [ "$*" = "" ]; then
  echo "This script creates xml files that can act as dynamic backgrounds for Gnome by referring to multiple wallpapers";
  echo "Usage: mkwlppr target-file.xml [duration] pic1 pic2 [pic3 .. picN]";
  #Grab the name of the target xml file
  xmlfile=`echo $files | cut -d " " -f 1`;
  #remove the first item from $files
  files=`echo $files | sed 's/^\<[^ ]*\>//'`;
  if [ "`echo $xmlfile | grep '\.xml$'`" = "" ]; then
    echo "Your target file must be an XML file";
    firstItem=`echo $files | cut -d " " -f 1`;
    duration="1795.0";#set the default duration
    if [ "`echo $firstItem | grep '^[0-9]\+\.[0-9]\+$'`" != "" ]; then
      echo "The duration must be an integer";
      files=`echo $files | sed 's/^\<[^ ]*\>//'`;
    elif [ "`echo $firstItem | grep '^[0-9]\+$'`" != "" ]; then
      #If the item is a number, then use it as the duration for each wallpaper image
      duration="`expr $firstItem - 5`.0";
      #remove the duration from the list of files
      files=`echo $files | sed 's/^\<[^ ]*\>//'`;
    if [ "$files" = "" ]; then
      echo "You must enter image files to associate with the XML file";
      for file in $files
        if [ ! -f $file ]; then
  echo "\"$file\" does not exist";
        elif [ "`echo $file | sed 's/^.*\.\(jpg\|jpeg\|bmp\|png\|gif\|tif\|tiff\|jif\|jfif\|jp2\|jpx\|j2k\|j2c\)$//'`" != "" ]; then
  echo "\"$file\" is not an image file";
      if [ $inputIsValid ]; then
        echo "<background>" >> $xmlfile
        echo "  <starttime>\n    <year>2009</year>\n    <month>08</month>\n    <day>04</day>" >> $xmlfile;
        echo "    <hour>00</hour>\n    <minute>00</minute>\n    <second>00</second>\n  </starttime>" >> $xmlfile;
        echo "  <!-- This animation will start at midnight. -->" >> $xmlfile;
        firstFile=`echo $files | cut -d " " -f 1`;#grab the first item
        if [ "`echo $firstFile | sed 's/\(.\).*/\1/'`" != "/" ]; then
          #If the first character in the filename is not '/', then it is a relative path and must have the current directory's path appended
        firstFile=`echo $firstFile | sed 's/[^/]\+\/\.\.\/\?//g'`;#Remove occurrences of ".." from the filepath
        files=`echo $files | sed 's/^\<[^ ]*\>//'`;#remove the first item
        #TODO add absolute path to the filenames
        #if $currFile =~ "^/.*" then the file needs to path appended
        echo "  <static>\n    <duration>$duration</duration>\n    <file>$firstFile</file>\n  </static>" >> $xmlfile;
        for currFile in $files
          if [ "`echo $currFile | sed 's/\(.\).*/\1/'`" != "/" ]; then
            #If the first character in the filename is not '/', then it is a relative path and must have the current directory's path appended
          currFile=`echo $currFile | sed 's/[^/]\+\/\.\.\/\?//g'`;#Remove occurrences of ".." from the filepath
          echo "  <transition>\n    <duration>5.0</duration>\n    <from>$prevFile</from>\n    <to>$currFile</to>\n  </transition>" >> $xmlfile;
          echo "  <static>\n    <duration>$duration</duration>\n    <file>$currFile</file>\n  </static>" >> $xmlfile;
        echo "  <transition>\n    <duration>5.0</duration>\n    <from>$currFile</from>\n    <to>$firstFile</to>\n  </transition>" >> $xmlfile;
        echo "</background>" >> $xmlfile;
Copy the code for the script above into a file called mkwlppr (short for "make wallpaper"). Make the script executable by typing:
<pre>sudo chmod 711 mkwlppr</pre>
Move the file so that you can run it from any directory by just using its name:
<pre>sudo mv mkwlppr /bin</pre>
Execute the script; it will tell you what input it requires from you. Use the script with input to create as many wallpaper XML files as you want.
Since this script is not interactive, you can use Unix's wildcards with it if you want to use all files in a directory and/or if you do not care about the order of the images.
You can specify paths relative to your current directory, and the script will put the files' absolute paths into the XML file for you; so you can create the XML file anywhere you want and move it afterward without rendering it useless.
If you want to run the script inside the /usr/share/backgrounds/ directory, you might have problems with permissions unless you run the command with sudo like this:
<code>sudo mkwlppr -parameters</code>
If you do not know what duration to specify for the images, simply do not provide a number in the input, and the progam will use the default values of 29 minutes and 55 seconds per image and a 5 second transition.
For more information, please see [http://www.linuxjournal.com/content/create-custom-transitioning-background-your-gnome-228-desktop this page].
==Useful Add-ons==
FAM allows gnome to do useful things such as automatically update the menu when new applications are installed, and refresh nautilus when a directory it is viewing is changed.
See the [[FAM|FAM Wiki]] for instructions on how to install it.
===Gnome System Monitor===
This application appears when the "System Monitor" applet is clicked, and displays the processor/memory usage of all running applications. It is not installed by default in the GNOME group, so you need to install it separately using:
# pacman -S gnome-system-monitor
===Burning CDs from Nautilus===
# pacman -S nautilus-cd-burner
===Gnome System Tools===
This adds several Gnome menu items under System->Administration, specifically
user management, date and time, network configuration, runlevels, and shared folders through
samba or NFS.  See [http://www.gnome.org/projects/gst/ Gnome documentation].
# pacman -S gnome-system-tools
'''Pay attention to the post-install message from pacman.'''
===Gdesklets:  Desktop Candy===
Put a clock, calendar, weather report, and more onto your desktop
# pacman -S gdesklets
You can find more desklets at [http://www.gdesklets.de/?q=desklet/browse gdesklets.org].  To install them, download the files.  Next, in the Gnome menu, open Applications->Accessories->gDesklets.  When the gDesklets Shell appears, drag the new gdesklet file onto the shell.  If you want gdesklets to load when you log in, click on the Gnome menu under System->Preferences->Sessions.  Choose "Startup Programs", click "add", and type in the data.  The command should be /usr/bin/gdesklets.  You can always find such a path by typing "whereis gdesklets".
==Other Applications==
These are some other nice applications and utilities for gnome, most of which can be downloaded all at once with:
# pacman -S gnome-extra
This is a group, so it is quite easy to choose not to download some of the packages, such as the documentation.
Install this application before logging into gnome for the first time unless you prefer to use xterm.
====Drop Down Consoles====
Gnome has a few dropdown consoles inspired by the ones found in FPS's such as Quake and Half-life (ie pressing the ~ key)
These follow Yakuake from KDE, below are a few ones native to Gnome.
Guake requires Python, it can be installed via the following command. F12 is the default to toggle the terminal. Guake features mutiple tabs and by default Ctrl+PgUp and Ctrl+PgDown can be used to switch between these terminals.
# pacman -S guake
You can set transparency and other settings by first toggling to the terminal via F12, right clicking and selecting Preferences.<br>
Guake can be started automatically by adding the following to Gnome Sessions via System -> Preferences -> Sessions.
Select Add, and these settings can be used:
*'''Name:''' Guake
*'''Command:''' guake &
*'''Comment:''' Guake Dropdown Terminal.
Tilda is another dropdown terminal for Gnome. Kindly add to this section if possible.
# pacman -S tilda
Tilda has fewer dependencies than Guake (no Python), and about the same features; however, it gives the user more control over the appearance of the terminal window.
A text editor with syntax highlighting.
Eye-of-Gnome, a handy, fast little image viewer which can re-size and rotate photos.
An archive manager which supports many different formats. (Install unrar, unzip, ... to get the respective formats)
A calculator, what else?
An iTunes like audio library and player.
CD Ripper, integrates with rhythmbox.
''To enable default mp3 profiles in preferences menu:''
# pacman -S gstreamer0.10-lame gstreamer0.10-taglib
'''Note:''' This should not be necessary anymore, since these packages now are included in gstreamer0.10-ugly-plugins and gstreamer0.10-good-plugins.
''If you're having other problems with SoundJuicer, click [[User:Munk3h|here]]''
A video player which uses gstreamer for decoding its input.
An open-source Photoshop alternative for linux. A must-have if you ever do anything with graphics.
An nice little FTP client for gnome.
A small, fast, .doc compatible word processor.
A very nice, excel like spreadsheet editor.
===Leave message feature in gnome screensaver===
This is a cool feature provided by gnome-screensaver 2.20, somebody can leave a message for you when you are not at your desk.
Please install notification-daemon to make this work.
===Change Gnome Screensaver background===
There isn't any option to change the screensaver's default background. The only way is to:
    cd /usr/share/pixmaps/backgrounds/gnome
    rm background-default.jpg
    ln -s /home/user/my_background.jpg background-default.jpg
A useful application that can be run as a daemon within gnome. It manipulates windows allowing you to start programs on a desired desktop or in a size of your choice among many other things. DevilsPie brings a whole new level of control into the metacity engine. There's a good HOWTO on their [http://live.gnome.org/DevilsPie homepage],
==See also==
* [[Gnome]]
* [[Gnome_2.28_Changes]]

Latest revision as of 08:58, 4 July 2016