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When I do systemctl enable lightdm, I get black screen after reboot and on the top left there is slowly blinking underdash _ , so I have lightdm disabled. When I am loged in with tty, I can start lightdm and X works. If i want to do startxfce4, it fails to start as normal user, but as root not. What I want is whenever I power on machine there should be X up and running.
Here are some logs and stuff that might help you.
sudo systemctl get-default
graphical.target/etc/lightdm/lightdm.conf:
[LightDM]
#start-default-seat=true
#greeter-user=lightdm
#minimum-display-number=0
#minimum-vt=7 # Setting this to a value < 7 implies security issues, see FS#46799
#lock-memory=true
#user-authority-in-system-dir=false
#guest-account-script=guest-account
logind-check-graphical=true
#log-directory=/var/log/lightdm
run-directory=/run/lightdm
#cache-directory=/var/cache/lightdm
#sessions-directory=/usr/share/lightdm/sessions:/usr/share/xsessions:/usr/share/wayland-sessions
#remote-sessions-directory=/usr/share/lightdm/remote-sessions
#greeters-directory=$XDG_DATA_DIRS/lightdm/greeters:$XDG_DATA_DIRS/xgreeters
#backup-logs=true
#dbus-service=true
[Seat:*]
#type=local
#pam-service=lightdm
#pam-autologin-service=lightdm-autologin
#pam-greeter-service=lightdm-greeter
#xserver-command=X
#xmir-command=Xmir
#xserver-config=
#xserver-layout=
#xserver-allow-tcp=false
#xserver-share=true
#xserver-hostname=
#xserver-display-number=
#xdmcp-manager=
#xdmcp-port=177
#xdmcp-key=
#greeter-session=lightdm-gtk-greeter
#greeter-hide-users=false
#greeter-allow-guest=true
#greeter-show-manual-login=false
#greeter-show-remote-login=true
#user-session=default
#allow-user-switching=true
#allow-guest=true
#guest-session=
session-wrapper=/etc/lightdm/Xsession
#greeter-wrapper=
#guest-wrapper=
#display-setup-script=
#display-stopped-script=
#greeter-setup-script=
#session-setup-script=
#session-cleanup-script=
#autologin-guest=false
#autologin-user=
#autologin-user-timeout=0
#autologin-in-background=false
#autologin-session=
#exit-on-failure=false
[XDMCPServer]
#enabled=false
#port=177
#listen-address=
#key=
#hostname=.local/share/xorg/Xorg.0.log
[ 69.864] (II) modeset(0): Output VGA-1 disconnected
[ 69.864] (II) modeset(0): Output DP-1 disconnected
[ 69.864] (II) modeset(0): Output HDMI-1 disconnected
[ 69.864] (II) modeset(0): Output DP-2 disconnected
[ 69.864] (II) modeset(0): Output HDMI-2 connected
[ 69.864] (II) modeset(0): Using exact sizes for initial modes
[ 69.864] (II) modeset(0): Output HDMI-2 using initial mode 1920x1080 +0+0
[ 69.864] (==) modeset(0): Using gamma correction (1.0, 1.0, 1.0)
[ 69.864] (==) modeset(0): DPI set to (96, 96)
[ 69.864] (II) Loading sub module "fb"
[ 69.864] (II) LoadModule: "fb"
[ 69.864] (II) Loading /usr/lib/xorg/modules/libfb.so
[ 69.865] (II) Module fb: vendor="X.Org Foundation"
[ 69.865] compiled for 1.20.5, module version = 1.0.0
[ 69.865] ABI class: X.Org ANSI C Emulation, version 0.4
[ 69.865] (II) UnloadModule: "vesa"
[ 69.865] (II) Unloading vesa
[ 69.865] (EE) modeset(0): drmSetMaster failed: Permission denied
[ 69.865] (EE)
Fatal server error:
[ 69.865] (EE) AddScreen/ScreenInit failed for driver 0
[ 69.865] (EE)
[ 69.865] (EE)
Please consult the The X.Org Foundation support
at http://wiki.x.org
for help.
[ 69.865] (EE) Please also check the log file at "/home/dusan/.local/share/xorg/Xorg.0.log" for additional information.
[ 69.865] (EE)
[ 69.883] (EE) Server terminated with error (1). Closing log file.Last edited by gold_r0ger (2019-10-28 08:41:27)
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