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[[file:XFCEScreenshot.png |thumb |Xfce screenshot.]]
== Prerequisites ==
* [[Installation|Alpine Installation]]
* [[Setting_up_a_new_user#Creating_a_new_user|Create user accounts]]
* [[Alpine_setup_scripts#setup-xorg-base|Graphical base environment]]
* [[Enable_Community_Repository#Using_community_repositories|Enabled "community" repository]]
== Basic Xfce desktop installation ==
Typical minimal package selection to install:
{{Cmd|# apk add xfce4 xfce4-terminal xfce4-screensaver lightdm-gtk-greeter }}
<code>xfce4-screensaver</code> may also be necessary just for screen locking after inactivity (with no screensaver enabled).<br>
<code>lightdm-gtk-greeter</code> may be omitted if Xfce should only be started from or after a command line login, i.e. the machine should not boot to a graphical login screen (display manager). However, it is then necessary to add some theme files instead, to get a proper (themed) appearance. The theme that would otherwise be included by default may be added with <code>adwaita-gtk2-theme adwaita-icon-theme</code>.
Starting dbus (desktop bus) service:
{{Cmd|# rc-service dbus start}}
Enabling dbus to start on boot:
{{Cmd|# rc-update add dbus}}
If dbus is not running it leads to issues like missing icons and keyboard shortcuts.
== Starting Xfce ==
=== With a display manager (graphical login) ===
If the package <code>lightdm-gtk-greeter</code> has been installed per the instructions above, the lightdm display manager may be started to log in graphically with your new user.
{{Cmd|# rc-service lightdm start}}
After correct operation is verified, lightdm can be enabled to start up during boot:
{{Cmd|# rc-update add lightdm}}
=== From the command line ===
Xfce may be started with:
If you want to start it via another script or mechanism like <code>xinit</code>, use <code>startxfce4</code>. e.g. call it via "exec startxfce4" at the end of the ~/.xinitrc configuration file.
== Localized keyboard layout ==
Settings->Keyboard->Layout->"Keyboard layout" seems to get activated only after once temporarily switching on the "Use system defaults" button, logging out and in again, and then turning it off.
== Allowing shut down and reboot ==
To enable users to shut down the machine or reboot, the packages {{Pkg|elogind}} and {{Pkg|polkit-elogind}} need to be installed.
{{Cmd|# apk add elogind polkit-elogind}}
A reboot is required to let it take effect.
{{Cmd|lbu commit  # if running in diskless mode, to save state
== Auto-mounting USB drives ==
To enable automatic mounting of USB drives, install these packages:
{{Cmd|# apk add gvfs udisks2}}
Depending on what devices you intend to mount, some additional packages may be needed:
{{Cmd|ntfs-3g        NTFS support
gvfs-cdda      audio CDs
gvfs-mtp      media players and mobile devices that use MTP
gvfs-gphoto2  digital cameras and mobile devices that use PTP
gvfs-afc      Apple mobile devices}}
To list descriptions of all gvfs- packages:
{{cmd|apk info -d gvfs-*
Make sure that mounting is enabled in
Thunar>Edit>Preferences>Advanced>Volume Management>Configure>Storage>Removable Storage
== Network browsing ==
For browsing of network shares within XFCE that works seamlessly with file associations, you can install the gvfs packages for the network protocols you use.
For example, to browse in a SMB/cifs windows network:
{{Cmd|# apk add gvfs-smb}}
(Check: If the above may already be sufficient for gvfs to initiate the fuse kernel module. Else, try to identify if there are necessary steps in:)
{{Cmd|# apk add gvfs-fuse}}
The OpenRC script for fuse is in a separate package.
{{Cmd|# apk add fuse-openrc}}
Then the fuse service can be started manually.
{{Cmd|# rc-service fuse start}}
(The XFCE sessions already in progress need to be restarted for this to take effect, i.e. log out and log in again.)
If it works, the fuse service can be added to start up automatically at boot time:
{{Cmd|# rc-update add fuse}}
== Desktop Applications ==
Completing the Xfce setup usually encompasses installing a number of desktop applications.
Some applications that should fit well for a light-weight Xfce desktop may be found at [[Xfce_Desktop]].
== Theme installation (optional) ==
All this is optional.
Example of installing and enabling a different theme.
* apk add paper-gtk-theme    # gtk2 !?
* change xfce4 style/icons to paper: Settings -> Appearance -> Style and Icons
* change window manager theme to Paper: Settings -> Window Manager -> Style
* set custom desktop background picture, to see the transparency effects
* Settings - > Appearance -> Fonts: Turn on Anti-aliasing (is the default) and enable Sub-Pixel order -> RGB
Example of changing to another icon theme.
* apk add paper-icon-theme  # ~125MB
* Change mouse Theme to Paper: Settings -> Mouse and Trackpad -> Theme
* enable all Composer Shadows: Settings -> Window Manager Tweaks -> Composer
Example of changing to another font, e.g. the international font Noto.
* apk add font-noto
* Settings - > Appearance -> Fonts: Set to Noto Sans UI
== Troubleshooting ==
=== Startup ===
If the Xorg server segfaults in kvm/qemu then add ''nomodeset'' as a boot option.
If the mouse / keyboard is not responding, you can try disabling hotplug.
  Section "ServerFlags"
    Option "AutoAddDevices" "False"
=== Login ===
If you are unable to login, check /var/log/lightdm/lightdm.log, there may be output there from X to indicate failed modules, etc.
If you are unable to login, or you see an error "Failed to execute login command", you should check ~/.xinitrc (if you're using .xinitrc) with your preferred text editor (vi, nano, etc) and ensure that it is set to load xfce. To do this, the 'exec' line (usually the last line in the file) should read "exec startxfce4". If ~/.xinitrc does not exist, create it and add the exec line. this command will do it:
{{Cmd|$ echo "exec startxfce4" >> ~/.xinitrc}}
=== Session ===
If the panel and windows disappear or start flickering after logging in to xfce the first time, log out, and then log in again. That happens because xfce is writing a default config file with the compositor enabled, but does not enable it during your first login.  Clear out the ~/.config/xfce directory, and login as "first time" again, as the default vblank setting for the compositor is likely incorrect.  Open the windows manager tweaks and dconf editor (or use dconf-query) before you log out.  Tick the compositor to off in the window manager tweaks ui.  If you have a recent enough xfce (4.14) there is a ui in window manager tweaks to set syncing mode, and you can try different values, such as vblank, xpresent, and glx, while turning the compositor on and off, until you find one that works.  Or, from dconf editor, you can set xfwm4 /general/vblank_mode, which you will find is set to "auto" by default, and then turn the compositor on again.  This can also be accomplished from the command line using using:
{{cmd|xfconf-query -c xfwm4 -p /general/vblank_mode -s mode}} where mode is vblank, glx or xpresent. 
You have to use xfconf-query from within the xfce terminal session, or at least with the xfce settings daemon started.
== Related ==
* Some notes of older custom configurations: [[Desktop-notes]]
* [ Install X-Window in Alpine Linux] Joachim Nilsson 2017

Revision as of 19:15, 6 December 2021