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Today, I'm logging into Arch using Lightdm, but It only appears black screen,when I go to the log, I see this:
[+0.05s] DEBUG: Logging to /var/log/lightdm/lightdm.log
[+0.05s] DEBUG: Starting Light Display Manager 1.30.0, UID=0 PID=432
[+0.05s] DEBUG: Loading configuration dirs from /usr/share/lightdm/lightdm.conf.d
[+0.05s] DEBUG: Loading configuration from /usr/share/lightdm/lightdm.conf.d/95-ukui-greeter.conf
[+0.05s] DEBUG: Loading configuration dirs from /usr/local/share/lightdm/lightdm.conf.d
[+0.05s] DEBUG: Loading configuration dirs from /etc/xdg/lightdm/lightdm.conf.d
[+0.05s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf
[+0.05s] DEBUG: Registered seat module local
[+0.05s] DEBUG: Registered seat module xremote
[+0.05s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager
[+0.06s] DEBUG: _g_io_module_get_default: Found default implementation local (GLocalVfs) for ‘gio-vfs’
[+0.06s] DEBUG: Monitoring logind for seats
[+0.06s] DEBUG: New seat added from logind: seat0
[+0.06s] DEBUG: Seat seat0: Loading properties from config section Seat:*
[+0.06s] DEBUG: Seat seat0 has property CanMultiSession=no
[+0.06s] DEBUG: Seat seat0: Starting
[+0.06s] DEBUG: Seat seat0: Creating greeter session
[+0.08s] DEBUG: Seat seat0: Creating display server of type x
[+0.08s] DEBUG: posix_spawn avoided (fd close requested)
[+0.08s] DEBUG: Could not run plymouth --ping: Failed to execute child process “plymouth” (No such file or directory)
[+0.08s] DEBUG: Using VT 7
[+0.08s] DEBUG: Seat seat0: Starting local X display on VT 7
[+0.08s] DEBUG: XServer 0: Logging to /var/log/lightdm/x-0.log
[+0.08s] DEBUG: XServer 0: Writing X server authority to /run/lightdm/root/:0
[+0.08s] DEBUG: XServer 0: Launching X Server
[+0.09s] DEBUG: Launching process 459: /usr/bin/X :0 -seat seat0 -auth /run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
[+0.09s] DEBUG: XServer 0: Waiting for ready signal from X server :0
[+0.09s] DEBUG: Acquired bus name org.freedesktop.DisplayManager
[+0.09s] DEBUG: Registering seat with bus path /org/freedesktop/DisplayManager/Seat0
[+5.31s] DEBUG: Loading users from org.freedesktop.Accounts
[+5.31s] DEBUG: User /org/freedesktop/Accounts/User1000 added
[+6.14s] DEBUG: posix_spawn avoided (automatic reaping requested) (fd close requested)
[+7.30s] DEBUG: Got signal 10 from process 459
[+7.30s] DEBUG: XServer 0: Got signal from X server :0
[+7.30s] DEBUG: XServer 0: Connecting to XServer :0
[+7.30s] DEBUG: posix_spawn avoided (fd close requested) (child_setup specified)
[+7.31s] DEBUG: Seat seat0: Display server ready, starting session authentication
[+7.31s] DEBUG: Session pid=505: Started with service 'lightdm-greeter', username 'lightdm'
[+7.54s] DEBUG: Session pid=505: Authentication complete with return value 0: Success
[+7.54s] DEBUG: Seat seat0: Session authenticated, running command
[+7.54s] DEBUG: Session pid=505: Running command /usr/bin/lightdm-webkit2-greeter
[+7.54s] DEBUG: Creating shared data directory /var/lib/lightdm-data/lightdm
[+7.54s] DEBUG: Session pid=505: Logging to /var/log/lightdm/seat0-greeter.log
[+8.88s] DEBUG: Activating VT 7
[+8.88s] DEBUG: Activating login1 session c1
[+8.88s] DEBUG: Seat seat0 changes active session to c1
[+8.88s] DEBUG: Session c1 is already active
[+29.13s] DEBUG: Greeter connected version=1.30.0 api=1 resettable=false
[+51.58s] DEBUG: Greeter requests data directory for user phantrungson
[+51.58s] DEBUG: Creating shared data directory /var/lib/lightdm-data/phantrungson
[+89.06s] DEBUG: Greeter start authentication for phantrungson
[+89.06s] DEBUG: Session pid=667: Started with service 'lightdm', username 'phantrungson'
[+89.21s] DEBUG: Session pid=667: Got 1 message(s) from PAM
[+89.21s] DEBUG: Prompt greeter with 1 message(s)
[+89.21s] DEBUG: Continue authentication
[+89.30s] DEBUG: Session pid=667: Authentication complete with return value 0: Success
[+89.30s] DEBUG: Authenticate result for user phantrungson: Success
[+89.30s] DEBUG: User phantrungson authorized
[+89.70s] DEBUG: Greeter requests session dwm
[+89.70s] DEBUG: Seat seat0: Stopping greeter; display server will be re-used for user session
[+89.70s] DEBUG: Terminating login1 session c1
[+89.70s] DEBUG: Session pid=505: Sending SIGTERM
[+89.80s] DEBUG: Greeter closed communication channel
[+89.80s] DEBUG: Session pid=505: Exited with return value 0
[+89.80s] DEBUG: Seat seat0: Session stopped
[+89.80s] DEBUG: Seat seat0: Greeter stopped, running session
[+89.80s] DEBUG: Registering session with bus path /org/freedesktop/DisplayManager/Session0
[+89.80s] DEBUG: posix_spawn avoided (fd close requested) (child_setup specified)
[+89.80s] DEBUG: Session pid=667: Running command /etc/lightdm/Xsession dwm
[+89.80s] DEBUG: Creating shared data directory /var/lib/lightdm-data/phantrungson
[+89.80s] DEBUG: Session pid=667: Logging to .xsession-errors
[+90.21s] DEBUG: Activating VT 7
[+90.21s] DEBUG: Activating login1 session 2
[+90.21s] DEBUG: Seat seat0 changes active session to
[+90.21s] DEBUG: Seat seat0 changes active session to 2
[+90.21s] DEBUG: Session 2 is already active
[+106.32s] DEBUG: Session pid=667: Exited with return value 1
[+106.32s] DEBUG: Seat seat0: Session stopped
[+106.32s] DEBUG: Seat seat0: Stopping display server, no sessions require it
[+106.32s] DEBUG: Sending signal 15 to process 459
[+107.13s] DEBUG: Process 459 exited with return value 0
[+107.13s] DEBUG: XServer 0: X server stopped
[+107.13s] DEBUG: Releasing VT 7
[+107.13s] DEBUG: XServer 0: Removing X server authority /run/lightdm/root/:0
[+107.13s] DEBUG: Seat seat0: Display server stopped
[+107.13s] DEBUG: Seat seat0: Active display server stopped, starting greeter
[+107.13s] DEBUG: Seat seat0: Creating greeter session
[+107.13s] DEBUG: Seat seat0: Creating display server of type x
[+107.13s] DEBUG: Using VT 7
[+107.13s] DEBUG: Seat seat0: Starting local X display on VT 7
[+107.13s] DEBUG: XServer 0: Logging to /var/log/lightdm/x-0.log
[+107.13s] DEBUG: XServer 0: Writing X server authority to /run/lightdm/root/:0
[+107.13s] DEBUG: XServer 0: Launching X Server
[+107.13s] DEBUG: Launching process 756: /usr/bin/X :0 -seat seat0 -auth /run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
[+107.13s] DEBUG: XServer 0: Waiting for ready signal from X server :0
[+108.48s] DEBUG: Got signal 10 from process 756
[+108.48s] DEBUG: XServer 0: Got signal from X server :0
[+108.48s] DEBUG: XServer 0: Connecting to XServer :0
[+108.48s] DEBUG: posix_spawn avoided (fd close requested) (child_setup specified)
[+108.48s] DEBUG: Seat seat0: Display server ready, starting session authentication
[+108.49s] DEBUG: Session pid=765: Started with service 'lightdm-greeter', username 'lightdm'
[+108.51s] DEBUG: Session pid=765: Authentication complete with return value 0: Success
[+108.51s] DEBUG: Seat seat0: Session authenticated, running command
[+108.51s] DEBUG: Session pid=765: Running command /usr/bin/lightdm-webkit2-greeter
[+108.51s] DEBUG: Creating shared data directory /var/lib/lightdm-data/lightdm
[+108.51s] DEBUG: Session pid=765: Logging to /var/log/lightdm/seat0-greeter.log
[+108.71s] DEBUG: Activating VT 7
[+108.71s] DEBUG: Activating login1 session c2
[+108.71s] DEBUG: Seat seat0 changes active session to c2
[+108.71s] DEBUG: Session c2 is already active
[+109.49s] DEBUG: Greeter connected version=1.30.0 api=1 resettable=false
[+165.62s] DEBUG: Greeter start authentication for phantrungson
[+165.62s] DEBUG: Session pid=874: Started with service 'lightdm', username 'phantrungson'
[+165.69s] DEBUG: Session pid=874: Got 1 message(s) from PAM
[+165.69s] DEBUG: Prompt greeter with 1 message(s)
[+165.69s] DEBUG: Continue authentication
[+165.78s] DEBUG: Session pid=874: Authentication complete with return value 0: Success
[+165.78s] DEBUG: Authenticate result for user phantrungson: Success
[+165.78s] DEBUG: User phantrungson authorized
[+166.18s] DEBUG: Greeter requests session xfce
[+166.29s] DEBUG: Writing /home/phantrungson/.dmrc
[+166.45s] DEBUG: Seat seat0: Stopping greeter; display server will be re-used for user session
[+166.45s] DEBUG: Terminating login1 session c2
[+166.45s] DEBUG: Session pid=765: Sending SIGTERM
[+166.47s] DEBUG: Session pid=765: Exited with return value 0
[+166.47s] DEBUG: Seat seat0: Session stopped
[+166.47s] DEBUG: Seat seat0: Greeter stopped, running session
[+166.47s] DEBUG: Registering session with bus path /org/freedesktop/DisplayManager/Session1
[+166.47s] DEBUG: posix_spawn avoided (fd close requested) (child_setup specified)
[+166.47s] DEBUG: Session pid=874: Running command /etc/lightdm/Xsession startxfce4
[+166.47s] DEBUG: Creating shared data directory /var/lib/lightdm-data/phantrungson
[+166.47s] DEBUG: Session pid=874: Logging to .xsession-errors
[+166.67s] DEBUG: Activating VT 7
[+166.67s] DEBUG: Activating login1 session 5
[+166.67s] DEBUG: Seat seat0 changes active session to 5
[+166.67s] DEBUG: Session 5 is already active
[+187.11s] DEBUG: Session pid=874: Exited with return value 1
[+187.11s] DEBUG: Seat seat0: Session stopped
[+187.11s] DEBUG: Seat seat0: Stopping display server, no sessions require it
[+187.11s] DEBUG: Sending signal 15 to process 756
[+187.93s] DEBUG: Process 756 exited with return value 0
[+187.93s] DEBUG: XServer 0: X server stopped
[+187.93s] DEBUG: Releasing VT 7
[+187.93s] DEBUG: XServer 0: Removing X server authority /run/lightdm/root/:0
[+187.93s] DEBUG: Seat seat0: Display server stopped
[+187.93s] DEBUG: Seat seat0: Active display server stopped, starting greeter
[+187.93s] DEBUG: Seat seat0: Creating greeter session
[+187.93s] DEBUG: Seat seat0: Creating display server of type x
[+187.93s] DEBUG: Using VT 7
[+187.93s] DEBUG: Seat seat0: Starting local X display on VT 7
[+187.93s] DEBUG: XServer 0: Logging to /var/log/lightdm/x-0.log
[+187.93s] DEBUG: XServer 0: Writing X server authority to /run/lightdm/root/:0
[+187.93s] DEBUG: XServer 0: Launching X Server
[+187.93s] DEBUG: Launching process 1043: /usr/bin/X :0 -seat seat0 -auth /run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
[+187.93s] DEBUG: XServer 0: Waiting for ready signal from X server :0
[+189.08s] DEBUG: Got signal 10 from process 1043
[+189.08s] DEBUG: XServer 0: Got signal from X server :0
[+189.08s] DEBUG: XServer 0: Connecting to XServer :0
[+189.08s] DEBUG: posix_spawn avoided (fd close requested) (child_setup specified)
[+189.08s] DEBUG: Seat seat0: Display server ready, starting session authentication
[+189.09s] DEBUG: Session pid=1052: Started with service 'lightdm-greeter', username 'lightdm'
[+189.12s] DEBUG: Session pid=1052: Authentication complete with return value 0: Success
[+189.12s] DEBUG: Seat seat0: Session authenticated, running command
[+189.12s] DEBUG: Session pid=1052: Running command /usr/bin/lightdm-webkit2-greeter
[+189.12s] DEBUG: Creating shared data directory /var/lib/lightdm-data/lightdm
[+189.12s] DEBUG: Session pid=1052: Logging to /var/log/lightdm/seat0-greeter.log
[+189.33s] DEBUG: Activating VT 7
[+189.33s] DEBUG: Activating login1 session c3
[+189.33s] DEBUG: Seat seat0 changes active session to c3
[+189.33s] DEBUG: Session c3 is already active
[+190.09s] DEBUG: Greeter connected version=1.30.0 api=1 resettable=false
[+206.48s] DEBUG: Greeter requests data directory for user phantrungson
[+206.48s] DEBUG: Creating shared data directory /var/lib/lightdm-data/phantrungson
[+243.68s] DEBUG: Got signal 15 from process 1
[+243.68s] DEBUG: Caught Terminated signal, shutting down
[+243.68s] DEBUG: Stopping display manager
[+243.68s] DEBUG: Seat seat0: Stopping
[+243.68s] DEBUG: Seat seat0: Stopping display server
[+243.68s] DEBUG: Sending signal 15 to process 1043
[+243.68s] DEBUG: Seat seat0: Stopping session
[+243.68s] DEBUG: Terminating login1 session c3
[+243.72s] DEBUG: Session pid=1052: Sending SIGTERM
[+243.84s] DEBUG: Greeter closed communication channel
[+243.84s] DEBUG: Session pid=1052: Exited with return value 0
[+243.84s] DEBUG: Seat seat0: Session stopped
[+243.86s] DEBUG: Seat seat0 changes active session to
[+244.57s] DEBUG: Process 1043 exited with return value 0
[+244.57s] DEBUG: XServer 0: X server stopped
[+244.57s] DEBUG: Releasing VT 7
[+244.57s] DEBUG: XServer 0: Removing X server authority /run/lightdm/root/:0
[+244.57s] DEBUG: Seat seat0: Display server stopped
[+244.57s] DEBUG: Seat seat0: Stopped
[+244.57s] DEBUG: Display manager stopped
[+244.57s] DEBUG: Stopping daemon
[+244.58s] DEBUG: Exiting with return value 0Is there anyway to fix this error? Thank you
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Are you able to log in?
Did you follow https://wiki.archlinux.org/index.php/Li … stallation ?
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If you're able to login, but have a black screen afterwards, you still have to install something that lighten launches (a window manager). See this:
https://wiki.archlinux.org/index.php/De … nvironment
Read #Overview
For a graphical environment you have two choices
A) install a full Desktop Environment. Then you don't need a DM (as in LightDM) either.
B) put the whole desktop together yourself. For this you already have the DM (LightDM) but still need at least a window manager (see #Custom environments on that page) and may want to install other stuff too. You also have to make the DM aware of which WM it should launch. Read https://wiki.archlinux.org/index.php/Di … figuration (I prefer the xinitrc way)
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