Difference between revisions of "LXQt"

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In early 2013, Hong Jen Yee "PCMan" started porting [[LXDE]] components to [[Qt]]. The first [http://blog.lxde.org/?p=1013 preview of LXDE-Qt] was released on July 3rd, 2013. On July 21st, it was announced that Razor-qt (a desktop similar in design to LXDE) and LXDE were merging.  
 
In early 2013, Hong Jen Yee "PCMan" started porting [[LXDE]] components to [[Qt]]. The first [http://blog.lxde.org/?p=1013 preview of LXDE-Qt] was released on July 3rd, 2013. On July 21st, it was announced that Razor-qt (a desktop similar in design to LXDE) and LXDE were merging.  
  
The result is [http://lxqt.org LXQt], a desktop built on Qt which partly uses Razor-qt and LXDE components. While development is mainly focused on LXQt, the GTK+ 2 version of LXDE will see continued development.
+
The result is [http://lxqt.org LXQt], a desktop built on Qt which partly uses Razor-qt and LXDE components. While development is mainly focused on LXQt, the GTK 2 version of LXDE will see continued development.
  
 
== Installation ==
 
== Installation ==
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For additional functionality, you may wish to install the following:
 
For additional functionality, you may wish to install the following:
  
* {{App|LXQt Connman applet|LXQt system-tray applet for [[ConnMan]].| https://github.com/surlykke/lxqt-connman-applet | {{AUR|lxqt-connman-applet-git}}}}
+
* {{App|LXQt Connman applet|LXQt system-tray applet for [[ConnMan]].|https://github.com/lxqt/lxqt-connman-applet|{{AUR|lxqt-connman-applet}}}}
* {{App|[[SDDM]]|The recommended display manager for LXQt.| https://github.com/sddm/sddm | {{Pkg|sddm}}}}
+
* {{App|[[SDDM]]|The recommended display manager for LXQt.|https://github.com/sddm/sddm|{{Pkg|sddm}}}}
* A screen locker, if needed. For example, [[slock]] or [[XScreenSaver]]. Both are confirmed to integrate with LXQt, others may too. If you want to disable screen locking upon suspend/sleep it is under "LXQT Session Settings/Lock screen before suspending".
+
* A screen locker, if needed. For example, [[slock]] or [[XScreenSaver]]. Both are confirmed to integrate with LXQt, others may too. If you want to disable screen locking upon suspend/sleep it is under ''LXQt > Preferences > LXQt Settings > Session Settings > Lock screen before suspending/hibernating'' checkbox.
{{Tip|LXQt uses ''xdg-screensaver'' from {{Pkg|xdg-utils}} for screen locking which only works with XScreenSaver and {{Pkg|xautolock}} in LXQt session. You can use it or another screen locker by itself. For example, with ''slock'' you can follow [[Slock#Lock on suspend]] as well as install patched {{AUR|xdg-utils-slock}} to obtain feelings expected by LXQt}}  
+
* If you haven't yet, install xorg.
 +
 
 +
{{Tip|LXQt uses ''xdg-screensaver'' from {{Pkg|xdg-utils}} for screen locking which only works with XScreenSaver and {{Pkg|xautolock}} in LXQt session. You can use it or another screen locker by itself. For example, with ''slock'' you can follow [[Slock#Lock on suspend]] as well as install patched {{AUR|xdg-utils-slock}} to obtain feelings expected by LXQt
 +
}}
 +
 
 
* Some LXQt panel plugins require extra packages to function, check the [[PKGBUILD#optdepends|optional dependencies]] for {{Pkg|lxqt-panel}}.
 
* Some LXQt panel plugins require extra packages to function, check the [[PKGBUILD#optdepends|optional dependencies]] for {{Pkg|lxqt-panel}}.
  
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Append the following line to [[Xinitrc]]:
 
Append the following line to [[Xinitrc]]:
  
exec startlxqt
+
{{hc|~/.xinitrc|exec startlxqt}}
  
 
=== Graphical login ===
 
=== Graphical login ===
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LXQt in general tries to provide GUI applications to change its settings. Configuration files are in {{ic|~/.config/lxqt}}. This directory is initialized automatically. The default configuration for new users is found in {{ic|/etc/xdg/lxqt}}.
 
LXQt in general tries to provide GUI applications to change its settings. Configuration files are in {{ic|~/.config/lxqt}}. This directory is initialized automatically. The default configuration for new users is found in {{ic|/etc/xdg/lxqt}}.
  
=== Replace Openbox ===
+
=== Screen Brightness ===
 +
 
 +
As of version 0.14.1 LXQT uses screen contrast control instead of screen brightness control for the screen brightness keyboard shortcuts, you can change the command to use xbacklight instead under the LXQT configuration center > shortcut keys
 +
xbacklight -inc 10
 +
xbacklight -dec 10
 +
If you're using the intel kernel modesetting driver xbacklight won't work, but you can use the following command instead
 +
pkexec lxqt-backlight_backend --inc
 +
pkexec lxqt-backlight_backend --dec
 +
You may need to create two scripts for screen brightness up and down and point the keyboard shortcut to the path of the scripts for it to work.
 +
 
 +
=== Panel Widgets ===
 +
 
 +
If you can't add the CPU and System Statistics widgets to the panel, make sure you have the following dependencies installed
 +
libstatgrab libsysstat
 +
 
 +
=== Use a different window manager ===
  
 
While [[Openbox]] is the default [[window manager]] for LXQt, you can specify a different window manager to use with LXQt via ''Session Settings'', {{ic|lxqt-config-session}}; or by editing {{ic|~/.config/lxqt/session.conf}}. Change the following line:
 
While [[Openbox]] is the default [[window manager]] for LXQt, you can specify a different window manager to use with LXQt via ''Session Settings'', {{ic|lxqt-config-session}}; or by editing {{ic|~/.config/lxqt/session.conf}}. Change the following line:
Line 50: Line 69:
 
  window_manager=''your_window_manager''
 
  window_manager=''your_window_manager''
  
=== Autostarting applications ===
+
=== Autostart ===
 +
 
 +
To have X applications start on login, click the main menu from the ''LXQt > Preferences > LXQt Settings > Session Settings''. Alternatively, this can be launched with:
  
To have X applications start on login, click the main menu from the LXQt -> Preferences -> LXQt Settings -> Session Settings. Alternatively, this can be launched with:
 
 
  lxqt-config-session
 
  lxqt-config-session
From this window, click on "AutoStart" on the left side. Here you can add a new application to either the global autostart (launched in all sessions implementing the said specification) or your local autostart (labled LXQt Autostart) (See [https://github.com/lxde/lxqt/issues/746 issue 746] for a bug related to this option).
 
  
For each item you add, {{ic|lxqt-config-session}} will create a .desktop-file at {{ic|~/.config/autostart}}. Preinstalled applications that will be automatically started at login can be found at {{ic|/etc/xdg/autostart}}. So you can also change your autostart preferences by editing the files in these directories. Besides, the distinction between "Global Autostart" and "LXQt Autostart" does not depend on the directory in which the corresponding .desktop-file is located, but rather on the {{ic|OnlyShowIn}}-setting. If it is {{ic|1=OnlyShowIn=true}}, it is considered an "LXQt Autostart". Furthermore, if {{ic|1=X-LXQt-Module=true}}, the item is not shown in {{ic|lxqt-config-session}}.
+
From this window, click on ''AutoStart'' on the left side. Here you can add a new application to either the global autostart (launched in all sessions implementing the [[XDG Autostart]] specification) or your local autostart (labelled LXQt Autostart) (See [https://github.com/lxde/lxqt/issues/746 issue 746] for a bug related to this option). For each item you add, {{ic|lxqt-config-session}} will create a Desktop entry (''.desktop'' file) in the appropriate [[XDG Autostart]] directory.
 +
 
 +
The distinction between "Global Autostart" and "LXQt Autostart" does not depend on the directory in which the corresponding ''.desktop'' file is located, but rather on the {{ic|OnlyShowIn}} setting. If it is {{ic|1=OnlyShowIn=true}}, it is considered an "LXQt Autostart". Furthermore, if {{ic|1=X-LXQt-Module=true}}, the item is not shown in {{ic|lxqt-config-session}}.
  
 
=== Set-up environment variables ===
 
=== Set-up environment variables ===
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=== Desktop icons are grouped together ===
 
=== Desktop icons are grouped together ===
  
When moving icons on the desktop it is possible to place them a bit too close to each other making them connected. If unable to separate them Stop Desktop from Session Settings, remove {{ic|.config/pcmanfm-qt/lxqt/desktop-items-0.conf}} and Start Desktop again.
+
When moving icons on the desktop it is possible to place them a bit too close to each other making them connected. If unable to separate them Stop Desktop from Session Settings, remove {{ic|~/.config/pcmanfm-qt/lxqt/desktop-items-0.conf}} and Start Desktop again.
  
 
== Tips and tricks ==
 
== Tips and tricks ==
 +
 +
=== Screen Compositor ===
 +
 +
You can add a compositor like {{Pkg|picom}} to autostart applications with a command like the following
 +
picom --vsync -r 12 --no-fading-openclose -b
  
 
=== Customizing Leave ===
 
=== Customizing Leave ===
  
One can customize the options available under "Leave" simply by copying the respective package provide .desktop file to {{ic|~/.local/share/applications}} and modifying it to contain the ''NoDisplay=true'' directive.  Reference: [https://github.com/lxde/lxqt/issues/876 #876].
+
One can customize the options available under ''Leave'' simply by copying the respective package provide {{ic|.desktop}} file to {{ic|~/.local/share/applications}} and modifying it to contain the {{ic|1=NoDisplay=true}} directive.  Reference: [https://github.com/lxde/lxqt/issues/876 #876].
  
 
Complete list of files to consider masking include:
 
Complete list of files to consider masking include:

Latest revision as of 07:30, 22 March 2020

In early 2013, Hong Jen Yee "PCMan" started porting LXDE components to Qt. The first preview of LXDE-Qt was released on July 3rd, 2013. On July 21st, it was announced that Razor-qt (a desktop similar in design to LXDE) and LXDE were merging.

The result is LXQt, a desktop built on Qt which partly uses Razor-qt and LXDE components. While development is mainly focused on LXQt, the GTK 2 version of LXDE will see continued development.

Installation

Install the lxqt group and an icon theme (e.g. breeze-icons or oxygen-icons).

For additional functionality, you may wish to install the following:

  • LXQt Connman applet — LXQt system-tray applet for ConnMan.
https://github.com/lxqt/lxqt-connman-applet || lxqt-connman-appletAUR
  • SDDM — The recommended display manager for LXQt.
https://github.com/sddm/sddm || sddm
  • A screen locker, if needed. For example, slock or XScreenSaver. Both are confirmed to integrate with LXQt, others may too. If you want to disable screen locking upon suspend/sleep it is under LXQt > Preferences > LXQt Settings > Session Settings > Lock screen before suspending/hibernating checkbox.
  • If you haven't yet, install xorg.
Tip: LXQt uses xdg-screensaver from xdg-utils for screen locking which only works with XScreenSaver and xautolock in LXQt session. You can use it or another screen locker by itself. For example, with slock you can follow Slock#Lock on suspend as well as install patched xdg-utils-slockAUR to obtain feelings expected by LXQt

Starting the desktop

Using xinit

Append the following line to Xinitrc:

~/.xinitrc
exec startlxqt

Graphical login

Choose LXQt Desktop from the menu in a display manager of choice.

Configuration

LXQt in general tries to provide GUI applications to change its settings. Configuration files are in ~/.config/lxqt. This directory is initialized automatically. The default configuration for new users is found in /etc/xdg/lxqt.

Screen Brightness

As of version 0.14.1 LXQT uses screen contrast control instead of screen brightness control for the screen brightness keyboard shortcuts, you can change the command to use xbacklight instead under the LXQT configuration center > shortcut keys

xbacklight -inc 10
xbacklight -dec 10

If you're using the intel kernel modesetting driver xbacklight won't work, but you can use the following command instead

pkexec lxqt-backlight_backend --inc
pkexec lxqt-backlight_backend --dec

You may need to create two scripts for screen brightness up and down and point the keyboard shortcut to the path of the scripts for it to work.

Panel Widgets

If you can't add the CPU and System Statistics widgets to the panel, make sure you have the following dependencies installed

libstatgrab libsysstat

Use a different window manager

While Openbox is the default window manager for LXQt, you can specify a different window manager to use with LXQt via Session Settings, lxqt-config-session; or by editing ~/.config/lxqt/session.conf. Change the following line:

window_manager=openbox

to a window manager of choice:

window_manager=your_window_manager

Autostart

To have X applications start on login, click the main menu from the LXQt > Preferences > LXQt Settings > Session Settings. Alternatively, this can be launched with:

lxqt-config-session

From this window, click on AutoStart on the left side. Here you can add a new application to either the global autostart (launched in all sessions implementing the XDG Autostart specification) or your local autostart (labelled LXQt Autostart) (See issue 746 for a bug related to this option). For each item you add, lxqt-config-session will create a Desktop entry (.desktop file) in the appropriate XDG Autostart directory.

The distinction between "Global Autostart" and "LXQt Autostart" does not depend on the directory in which the corresponding .desktop file is located, but rather on the OnlyShowIn setting. If it is OnlyShowIn=true, it is considered an "LXQt Autostart". Furthermore, if X-LXQt-Module=true, the item is not shown in lxqt-config-session.

Set-up environment variables

Environment variables for LXQt session can be defined in Session Settings.

Editing the Application Menu

It is possible to edit menu entries by editing their .desktop files stored in /usr/share/applications/lxqt-*.desktop files. See Desktop entries.

Troubleshooting

Desktop icons are grouped together

When moving icons on the desktop it is possible to place them a bit too close to each other making them connected. If unable to separate them Stop Desktop from Session Settings, remove ~/.config/pcmanfm-qt/lxqt/desktop-items-0.conf and Start Desktop again.

Tips and tricks

Screen Compositor

You can add a compositor like picom to autostart applications with a command like the following

picom --vsync -r 12 --no-fading-openclose -b

Customizing Leave

One can customize the options available under Leave simply by copying the respective package provide .desktop file to ~/.local/share/applications and modifying it to contain the NoDisplay=true directive. Reference: #876.

Complete list of files to consider masking include:

lxqt-hibernate.desktop
lxqt-leave.desktop
lxqt-lockscreen.desktop
lxqt-logout.desktop
lxqt-reboot.desktop
lxqt-shutdown.desktop
lxqt-suspend.desktop

Example: remove hibernate option.

$ mkdir -p ~/.local/share/applications
$ sed '/OnlyShowIn/aNoDisplay=true' </usr/share/applications/lxqt-hibernate.desktop >~/.local/share/applications/lxqt-hibernate.desktop

See also