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linux:prepare:x_window [2015/06/11 07:23] – created niziaklinux:prepare:x_window [2023/01/03 11:49] (current) – niziak
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-test+====== X Window system ====== 
 +based on XFCE 
 + 
 +==== Font smoothing ==== 
 +  * Settings -> Appearance -->  (it works only for XFCE desktop) 
 + 
 +<file xml | ~/.fonts.conf> 
 +<?xml version="1.0" ?> 
 +<!DOCTYPE fontconfig SYSTEM "fonts.dtd"> 
 +<fontconfig> 
 +<!-- 
 +    <match target="font"> 
 + <edit name="autohint" mode="assign"><bool>true</bool></edit> 
 +    </match> 
 +--> 
 + <!-- 
 +            use rgb sub-pixel ordering to improve glyph appearance on 
 +            LCD screens.  Changes affecting rendering, but not matching 
 +            should always use target="font". 
 +   --> 
 +       <match target="font"> 
 +            <edit name="rgba" mode="assign"><const>rgb</const></edit> 
 +            <edit name="hintstyle" mode="assign"><const>hintfull</const></edit> 
 +       </match> 
 +</fontconfig> 
 + 
 +</file> 
 + 
 +  * Chrom browser. Go to [[chrome://flags]] and find ''LCD text antialiasing'' 
 +  * Firefox. Go to [[about:config]] and find ''gfx.use_text_smoothing_setting'' 
 +  *  
 +==== Focus stealing ==== 
 +  * Settings -> Window Manager -> Focus 
 +  * Settings -> Window Manager Tweaks -> Focus 
 + 
 +==== set default window manager ==== 
 +<code bash> 
 +update-alternatives --config x-session-manager 
 +# /usr/bin/startxfce4 
 +update-alternatives --config x-window-manager 
 +# /usr/bin/xfwm4 
 +update-alternatives --config x-terminal-emulator 
 +# /usr/bin/xfce4-terminal.wrapper 
 +</code> 
 + 
 +=== Enable CTRL+ALT+DEL to kill X-server === 
 +<code bash>dpkg-reconfigure keyboard-configuration</code> 
 + 
 + 
 +=== XFCE4: restore working TAB key and CTRL+D === 
 +<file | ~/.config/xfce4/xfconf/xfce-perchannel-xml/xfce4-keyboard-shortcuts.xml> 
 +<property name="&lt;Super&gt;Tab" type="string" value="empty"/> 
 + 
 +</file> 
 + 
 +=== misc === 
 +<code bash>apt-get install browser-plugin-vlc</code> 
 + 
 + 
 +=== Power management === 
 +<code bash>sudo apt-get install acpi-support</code> 
 + 
 +Turn off monitors command and lock: 
 +<code bash> 
 +xset dpms force off 
 +xscreensaver-command --lock 
 +</code> 
 + 
 +=== Control minitor brightness === 
 +<code bash> 
 +xrandr --output HDMI2 --brightness 0.5 
 +xrandr --output VGA1 --brightness 0.5 
 +</code> 
 + 
 +=== Enable/disable 2nd monitor === 
 +<code bash> 
 +xrandr --output HDMI2 --off 
 +xrandr --output HDMI2 --auto --right-of VGA1 
 +</code> 
 +==== Using Brighntess Controller ==== 
 +<code bash>sudo apt-get install python-wxgtk3.0 python-pyside</code> 
 + 
 +Download and install latest version from [[http://lordamit.github.io/Brightness]]. 
 +Do not use Ubuntu's deb because it contain old version. 
 + 
 + 
 +==== Using Indicator Brightness ==== 
 +apt-get install libappindicator1 libdbusmenu-gtk4 libindicator7 python-appindicator python-gobject 
 +apt-get install notify-osd 
 + 
 +wget http://launchpadlibrarian.net/196377180/notify-osd-icons_0.8%2B15.04.20150202-0ubuntu1_all.deb 
 +dpkg -i dpkg -i notify-osd-icons_0.8+15.04.20150202-0ubuntu1_all.deb 
 + 
 +wget http://ppa.launchpad.net/indicator-brightness/ppa/ubuntu/pool/main/i/indicator-brightness/indicator-brightness_0.4~bzr11~ubuntu15.04.1_all.deb 
 +dpkg -i indicator-brightness_0.4~bzr11~ubuntu15.04.1_all.deb 
 + 
 + 
 +sudo apt-get install software-properties-common python-software-properties 
 +sudo add-apt-repository ppa:indicator-brightness/ppa 
 +sudo apt-get update 
 +sudo apt-get install indicator-brightness 
 + 
 + 
 + 
 +=== Open PDFs in okular === 
 +Force system to ask how to open file: 
 +<code bash>mimeopen -d file.pdf</code> 
 +or 
 +<code bash> 
 +xdg-mime query filetype document.pdf 
 +xdg-mime query default application/pdf 
 +xdg-mime default okularApplication_pdf.desktop application/pdf  
 +# or kde4-okularApplication_pdf.desktop 
 +</code> 
 +see 
 +<code bash> 
 +cat /usr/share/applications/mimeinfo.cache and defaults.list  
 +cat  ~/.local/share/applications/mimeapps.list  
 +</code> 
 + 
 +sudo update-mime-database /usr/share/mime 
 + 
 +=== Multimonitor === 
 +use xrandr to list available outputs. Example output: 
 + 
 +<code> 
 +Screen 0: minimum 320 x 200, current 1920 x 1080, maximum 8192 x 8192 
 +VGA1 connected 1366x768+0+0 (normal left inverted right x axis y axis) 410mm x 230mm 
 +   1366x768      59.79*+ 
 +... 
 +HDMI1 disconnected (normal left inverted right x axis y axis) 
 +HDMI2 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 477mm x 268mm 
 +   1920x1080     60.00*+ 
 +... 
 +DP1 disconnected (normal left inverted right x axis y axis) 
 +HDMI3 disconnected (normal left inverted right x axis y axis) 
 +</code> 
 + 
 +To set layout of monitor: 
 +<code bash> 
 +xrandr --output VGA1 --right-of HDMI2 
 +</code> 
 + 
 +You need to create startup script with above command, and configure XFCE to run it at start (read more below). 
 + 
 +There is also graphical UI available: 
 +<code bash>apt-get install arandr</code> 
 + 
 +To make settings permanent, use **Layout** --> **Save as** 
 +This will create executable script in **~/.screenlayout/your_name.sh** 
 + 
 +Then add above executable script to autostart of XFCE: 
 +**Application Menu** --> **Settings** --> **Session and Startup** 
 + 
 +=== remote VNC access === 
 +Start VNC after first user login (from autostart): 
 + 
 +<code bash> 
 +$ sudo apt-get install x11vnc 
 +$ mkdir -p ~/.config/autostart 
 +$ cd ~/.config/autostart 
 +$ cat > X11VNC.desktop 
 +</code> 
 + 
 +And paste following content: 
 + 
 +<code ini> 
 +[Desktop Entry] 
 +Encoding=UTF-8 
 +Type=Application 
 +Name=X11VNC 
 +Comment= 
 +Exec=x11vnc -forever -usepw -httpport 5900 
 +StartupNotify=false 
 +Terminal=false 
 +Hidden=false 
 +</code> 
 + 
 +Finish pasting with CTRL+D 
 + 
 +Password file (~/.vnc/passwd) you can create using //vncpasswd// command. 
 + 
 +==== vnc4server ==== 
 + 
 +in file ~/.vnc/xstartup 
 + 
 +add before executing x-session: 
 + 
 +<file bash ~/.vnc/xstartup> 
 +if test -z "$DBUS_SESSION_BUS_ADDRESS" ; then 
 + eval `dbus-launch --sh-syntax –exit-with-session` 
 + echo "D-BUS per-session daemon address is: \ 
 + $DBUS_SESSION_BUS_ADDRESS" 
 +fi 
 +</file> 
 + 
 +Update: 
 +It looks like now vncserver expects that ''xstartup'' to stay foreground, so simply: 
 +<file bash ~/.vnc/xstartup> 
 +xsession & 
 +dbus-launch --exit-with-session lxsession 
 +</file> 
 + 
 +=== Sound === 
 +<code> 
 +apt-get install pavucontrol pavumeter 
 +</code> 
 + 
 +=== Trackball/mouse === 
 +<code bash>apt-get install xinput</code> 
 +For touchscreen, please install also xinput-calibrator 
 + 
 +<code bash> 
 +xinput list # to see device list and ids 
 +xinput list-props 10 # list props for device id=10 
 +</code>