[elrepo] lightdm + xorg.conf + nvidia driver

[Felix Kölzow]

Dear Dusan,

I use CentOS 7.5.

Felix


On 27.06.2018 08:44, bruncko wrote:
> Dear Felix,
>
> Do you use RHEL7?
>
> Dusan
>
> Felix Kölzow wrote:
>>
>> Hello elrepo-community,
>>
>>
>> I have to maintain a (headless) 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.
>>
>>
>> For the mentioned machine above, I also installed the kmod-nvidia 
>> provided by elrepo.
>> But I encounter the same issue.
>>
>>
>> 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:  version 390.59 
>> (buildmeister at 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 at 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 at 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:   [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
>>
>>
>>
>>
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