Hello CentOS-Community,
I have to maintain a server that should be useable with VNC and some
software requires to run VirtualGL.
Also a nvidia graphic card is installed.
After downloading and installing the nvidia driver from nvidias homepage
and modifying
the xorg.conf as mentioned on the virtualgL-homepage,
I am not able to restart lightdm anymore.
Lightdm should be running, otherwise it is not possible
to run virtualgl in an appropriate way.
I had the same/similar issues on three different servers with three
different nvidia graphic cards.
Any help is appreciated.
Best Regards,
Felix Kölzow
###### log files and xorg.conf #######
nvidia-detect leads to:
[10de:11fa] NVIDIA Corporation GK106GL [Quadro K4000]
This device requires the current 390.59 NVIDIA driver kmod-nvidia
My xorg.conf file looks like:
# nvidia-xconfig: X configuration file generated by nvidia-xconfig
# nvidia-xconfig:Â version 390.59
(buildmeister@swio-display-x64-rhel04-13) Wed May 9 23:09:38 PDT 2018
Section "ServerLayout"
   Identifier    "Layout0"
   Screen     0 "Screen0"
   InputDevice   "Keyboard0" "CoreKeyboard"
   InputDevice   "Mouse0" "CorePointer"
EndSection
Section "Files"
   FontPath       "/usr/share/fonts/default/Type1"
EndSection
Section "InputDevice"
   # generated from default
   Identifier    "Mouse0"
   Driver        "mouse"
   Option        "Protocol" "auto"
   Option        "Device" "/dev/input/mice"
   Option        "Emulate3Buttons" "no"
   Option        "ZAxisMapping" "4 5"
EndSection
Section "InputDevice"
   # generated from default
   Identifier    "Keyboard0"
   Driver        "kbd"
EndSection
Section "Monitor"
   Identifier    "Monitor0"
   VendorName    "Unknown"
   ModelName     "Unknown"
   HorizSync      28.0 - 33.0
   VertRefresh    43.0 - 72.0
   Option        "DPMS"
EndSection
Section "Device"
   Identifier    "Device0"
   Driver        "nvidia"
   VendorName    "NVIDIA Corporation"
   BusID         "PCI:42:00:0"
EndSection
Section "Screen"
   Identifier    "Screen0"
   Device        "Device0"
   Monitor       "Monitor0"
   DefaultDepth   24
   SubSection    "Display"
       Depth      24
   EndSubSection
EndSection
and the lightdm.conf looks like:
[root@sv199 X11]# cat /etc/lightdm/lightdm.conf
#
# General configuration
#
# start-default-seat = True to always start one seat if none are defined
in the configuration
# greeter-user = User to run greeter as
# minimum-display-number = Minimum display number to use for X servers
# minimum-vt = First VT to run displays on
# lock-memory = True to prevent memory from being paged to disk
# user-authority-in-system-dir = True if session authority should be in
the system location
# guest-account-script = Script to be run to setup guest account
# logind-check-graphical = True to on start seats that are marked as
graphical by logind
# log-directory = Directory to log information to
# run-directory = Directory to put running state in
# cache-directory = Directory to cache to
# sessions-directory = Directory to find sessions
# remote-sessions-directory = Directory to find remote sessions
# greeters-directory = Directory to find greeters
# backup-logs = True to move add a .old suffix to old log files when
opening new ones
# dbus-service = True if LightDM provides a D-Bus service to control it
#
[LightDM]
#start-default-seat=true
#greeter-user=lightdm
#minimum-display-number=0
#minimum-vt=7
#lock-memory=true
#user-authority-in-system-dir=false
#guest-account-script=guest-account
#logind-check-graphical=false
#log-directory=/var/log/lightdm
#run-directory=/var/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
greeters-directory=/usr/share/xgreeters/
#backup-logs=true
#dbus-service=true
#
# Seat configuration
#
# Seat configuration is matched against the seat name glob in the
section, for example:
# [Seat:*] matches all seats and is applied first.
# [Seat:seat0] matches the seat named "seat0".
# [Seat:seat-thin-client*] matches all seats that have names that start
with "seat-thin-client".
#
# type = Seat type (local, xremote, unity)
# pam-service = PAM service to use for login
# pam-autologin-service = PAM service to use for autologin
# pam-greeter-service = PAM service to use for greeters
# xserver-backend = X backend to use (mir)
# xserver-command = X server command to run (can also contain arguments
e.g. X -special-option)
# xmir-command = Xmir server command to run (can also contain arguments
e.g. Xmir -special-option)
# xserver-config = Config file to pass to X server
# xserver-layout = Layout to pass to X server
# xserver-allow-tcp = True if TCP/IP connections are allowed to this X
server
# xserver-share = True if the X server is shared for both greeter and
session
# xserver-hostname = Hostname of X server (only for type=xremote)
# xserver-display-number = Display number of X server (only for
type=xremote)
# xdmcp-manager = XDMCP manager to connect to (implies
xserver-allow-tcp=true)
# xdmcp-port = XDMCP UDP/IP port to communicate on
# xdmcp-key = Authentication key to use for XDM-AUTHENTICATION-1 (stored
in keys.conf)
# unity-compositor-command = Unity compositor command to run (can also
contain arguments e.g. unity-system-compositor -special-option)
# unity-compositor-timeout = Number of seconds to wait for compositor to
start
# greeter-session = Session to load for greeter
# greeter-hide-users = True to hide the user list
# greeter-allow-guest = True if the greeter should show a guest login option
# greeter-show-manual-login = True if the greeter should offer a manual
login option
# greeter-show-remote-login = True if the greeter should offer a remote
login option
# user-session = Session to load for users
# allow-user-switching = True if allowed to switch users
# allow-guest = True if guest login is allowed
# guest-session = Session to load for guests (overrides user-session)
# session-wrapper = Wrapper script to run session with
# greeter-wrapper = Wrapper script to run greeter with
# guest-wrapper = Wrapper script to run guest sessions with
# display-stopped-script = Script to run after stopping the display
server (runs as root)
# greeter-setup-script = Script to run when starting a greeter (runs as
root)
# session-setup-script = Script to run when starting a user session
(runs as root)
# session-cleanup-script = Script to run when quitting a user session
(runs as root)
# autologin-guest = True to log in as guest by default
# autologin-user = User to log in with by default (overrides
autologin-guest)
# autologin-user-timeout = Number of seconds to wait before loading
default user
# autologin-session = Session to load for automatic login (overrides
user-session)
# autologin-in-background = True if autologin session should not be
immediately activated
# exit-on-failure = True if the daemon should exit if this seat fails
#
[Seat:*]
#type=local
#pam-service=lightdm
#pam-autologin-service=lightdm-autologin
#pam-greeter-service=lightdm-greeter
#xserver-backend=
#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=
#unity-compositor-command=unity-system-compositor
#unity-compositor-timeout=60
#greeter-session=lightdm-slick-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=lightdm-session
#greeter-wrapper=
#guest-wrapper=
#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
#
# XDMCP Server configuration
#
# enabled = True if XDMCP connections should be allowed
# port = UDP/IP port to listen for connections on
# listen-address = Host/address to listen for XDMCP connections (use all
addresses if not present)
# key = Authentication key to use for XDM-AUTHENTICATION-1 or blank to
not use authentication (stored in keys.conf)
# hostname = Hostname to report to XDMCP clients (defaults to system
hostname if unset)
#
# The authentication key is a 56 bit DES key specified in hex as
0xnnnnnnnnnnnnnn. Alternatively
# it can be a word and the first 7 characters are used as the key.
#
[XDMCPServer]
#enabled=false
#port=177
#listen-address=
#key=
#hostname=
#
# VNC Server configuration
#
# enabled = True if VNC connections should be allowed
# command = Command to run Xvnc server with
# port = TCP/IP port to listen for connections on
# listen-address = Host/address to listen for VNC connections (use all
addresses if not present)
# width = Width of display to use
# height = Height of display to use
# depth = Color depth of display to use
#
[VNCServer]
#enabled=false
#command=Xvnc
#port=5900
#listen-address=
#width=1024
#height=768
#depth=8
[SeatDefaults]
display-setup-script=xhost +LOCAL:
This is lightdm.log file looks like:
[root@sv199 X11]# cat /var/log/lightdm/lightdm.log
[+0.00s] DEBUG: Logging to /var/log/lightdm/lightdm.log
[+0.00s] DEBUG: Starting Light Display Manager 1.25.0, UID=0 PID=3411
[+0.00s] DEBUG: Loading configuration dirs from
/usr/share/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration from
/usr/share/lightdm/lightdm.conf.d/50-backup-logs.conf
[+0.00s] DEBUG: Loading configuration from
/usr/share/lightdm/lightdm.conf.d/50-disable-guest.conf
[+0.00s] DEBUG: Loading configuration from
/usr/share/lightdm/lightdm.conf.d/50-minimum-vt.conf
[+0.00s] DEBUG: Loading configuration from
/usr/share/lightdm/lightdm.conf.d/50-session-wrapper.conf
[+0.00s] DEBUG: Loading configuration from
/usr/share/lightdm/lightdm.conf.d/50-user-authority-in-system-dir.conf
[+0.00s] DEBUG: Loading configuration from
/usr/share/lightdm/lightdm.conf.d/50-xserver-command.conf
[+0.00s] DEBUG: Loading configuration from
/usr/share/lightdm/lightdm.conf.d/90-slick-greeter.conf
[+0.00s] DEBUG: Loading configuration dirs from
/usr/local/share/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration dirs from
/etc/xdg/lightdm/lightdm.conf.d
[+0.00s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf
[+0.00s] DEBUG:Â Â [SeatDefaults] is now called [Seat:*], please update
this configuration
[+0.00s] DEBUG: Registered seat module local
[+0.00s] DEBUG: Registered seat module xremote
[+0.00s] DEBUG: Registered seat module unity
[+0.00s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager
[+0.00s] DEBUG: Monitoring logind for seats
[+0.00s] DEBUG: New seat added from logind: seat0
[+0.00s] DEBUG: Seat seat0: Loading properties from config section Seat:*
[+0.00s] DEBUG: Seat seat0: Starting
[+0.00s] DEBUG: Seat seat0: Creating greeter session
[+0.00s] DEBUG: Seat seat0: Creating display server of type x
[+0.01s] DEBUG: Using VT 1
[+0.01s] DEBUG: Seat seat0: Starting local X display on VT 1
[+0.01s] DEBUG: XServer 0: Logging to /var/log/lightdm/x-0.log
[+0.01s] DEBUG: XServer 0: Writing X server authority to
/var/run/lightdm/root/:0
[+0.01s] DEBUG: XServer 0: Launching X Server
[+0.01s] DEBUG: Launching process 3417: /usr/bin/X -core -noreset :0
-seat seat0 -auth /var/run/lightdm/root/:0 -nolisten tcp vt1 -novtswitch
-background none
[+0.01s] DEBUG: XServer 0: Waiting for ready signal from X server :0
[+0.01s] DEBUG: Acquired bus name org.freedesktop.DisplayManager
[+0.01s] DEBUG: Registering seat with bus path
/org/freedesktop/DisplayManager/Seat0
[+0.01s] DEBUG: Loading users from org.freedesktop.Accounts
[+0.01s] DEBUG: User /org/freedesktop/Accounts/User1000 added
[+0.01s] DEBUG: User /org/freedesktop/Accounts/User1002 added
[+0.01s] DEBUG: User /org/freedesktop/Accounts/User1003 added
[+0.01s] DEBUG: User /org/freedesktop/Accounts/User1001 added
[+0.09s] DEBUG: Process 3417 terminated with signal 6
[+0.09s] DEBUG: XServer 0: X server stopped
[+0.09s] DEBUG: Releasing VT 1
[+0.09s] DEBUG: XServer 0: Removing X server authority
/var/run/lightdm/root/:0
[+0.09s] DEBUG: Seat seat0: Display server stopped
[+0.09s] DEBUG: Seat seat0: Stopping session
[+0.09s] DEBUG: Seat seat0: Session stopped
[+0.09s] DEBUG: Seat seat0: Stopping display server, no sessions require it
[+0.09s] DEBUG: Seat seat0: Stopping; greeter display server failed to start
[+0.09s] DEBUG: Seat seat0: Stopping
[+0.09s] DEBUG: Seat seat0: Stopped
[+0.09s] DEBUG: Required seat has stopped
[+0.09s] DEBUG: Stopping display manager
[+0.09s] DEBUG: Display manager stopped
[+0.09s] DEBUG: Stopping daemon
[+0.09s] DEBUG: Exiting with return value 1
