Deepin Desktop Environment
The Deepin Desktop Environment (DDE) is the desktop environment of the Chinese Deepin Linux distribution. There are known security vulnerabilites in DDE, reported by developers of the OpenSuse distribution to the DDE developers. The DDE developers did not respond to the reports [1].
Installation
To get a minimal desktop interface, you may start by installing deepin group. This will pull all the basic components.
The deepin-extra groups contains some extra applications for a more complete desktop environment.
To be able to use the integrated network administration, the networkmanager package is required, and the NetworkManager.service must be started and enabled.
Starting
Via a display manager
To use the default DDE's lightdm greeter you have to modify the configuration file under the [Seat:*] section, to state:.
/etc/lightdm/lightdm.conf
[Seat:*] ... greeter-session=lightdm-deepin-greeter
Note that a valid home directory must exist for a user other than root for the greeter to work.
Via xinit
To use Deepin via xinit, you'll need to add the following to your .xinitrc file.
~/.xinitrc
exec startdde
Configuration
Customize touchpad gesture behavior
Deepin doesn't officially support customizing the gesture behaviors, but it is possible to manually change this by editing the configuration file. Configuration file directory:
/usr/share/dde-daemon/gesture.json
If you want to disable specific gesture activity. Set "Action" be "none". For example:
{
"Name": "tap",
"Direction": "none",
"Fingers": 3,
"Action": {
"Type": "built-in",
"Action": "none"
}
}
Reboot or re-login after you edit the file.
Changing default deepin sounds
While this is not officially supported, it is possible to change or even remove the default sounds that are used by Deepin (ex. login sound). Simply replace the sounds in the directory:
/usr/share/sounds/deepin/stereo
Note: If you simply want to disable the sound effects entirely, it can be done from Deepin's system settings (sound section).
Troubleshooting
No background after resuming from standby
Because of the way the NVIDIA driver stores its FBOs [2], it happens that after resuming from standby the background suddenly disappears, leaving only a white screen with possibly some color noise on it. The bug appears to be fixed in GNOME upstream, but the Deepin desktop environment still has it.
A possible workaround would be restarting the window manager every time the computer resumes from suspension. A way to do that would be creating the following systemd service
/etc/systemd/system/resume@.service
[Unit] Description=User resume actions After=suspend.target [Service] User=%I Type=simple ExecStart=/usr/bin/deepin-wm-restart.sh [Install] WantedBy=suspend.target
That executes the following script
/usr/bin/deepin-wm-restart.sh
#!/bin/bash export DISPLAY=:0 deepin-wm --replace
Once those two files are created in the correct directories, in order to enable the script it's sufficient to run these commands:
# chmod +x /usr/bin/deepin-wm-restart.sh # systemctl enable resume@user # systemctl start resume@user
The first command makes the script you created executable, the second makes sure that the service always start at boot and the last one starts the service immediately so you can test the workaround without having to reboot the system.
Wireless network does not connect
NetworkManager sets the MAC address generated randomly. This was already enabled by default, to disable it add the following lines to the NetworkManager configuration file.
/etc/NetworkManager/NetworkManager.conf
[device] wifi.scan-rand-mac-address=no
Bluetooth Menu does not show up / work
Enable the bluetooth.service. This service is not enabled by default.
# systemctl enable bluetooth.service # systemctl start bluetooth.service
Bug reporting
Any upstream or Arch packaging related bugs should be reported here. All the Deepin developers will see the bug reports and solve them as soon as possible.