Right now, when i startup, I get a command line and I have to do startx, then gnome-shell --replace.

attached are a bunch of logs

log.txt is my startup.

can someone help me figure out whats up? 0_1462405471522_tmp.tar

[+0.12s] DEBUG: Logging to /var/log/lightdm/lightdm.log
[+0.12s] DEBUG: Starting Light Display Manager 1.16.6, UID=0 PID=370
[+0.12s] DEBUG: Loading configuration dirs from /usr/share/lightdm/lightdm.conf.d
[+0.12s] DEBUG: Loading configuration dirs from /usr/local/share/lightdm/lightdm.conf.d
[+0.12s] DEBUG: Loading configuration dirs from /etc/xdg/lightdm/lightdm.conf.d
[+0.12s] DEBUG: Loading configuration from /etc/lightdm/lightdm.conf
[+0.12s] DEBUG: Using D-Bus name org.freedesktop.DisplayManager
[+0.21s] DEBUG: Registered seat module xlocal
[+0.21s] DEBUG: Registered seat module xremote
[+0.21s] DEBUG: Registered seat module unity
[+1.16s] DEBUG: Monitoring logind for seats
[+1.16s] DEBUG: New seat added from logind: seat0
[+1.16s] DEBUG: Seat seat0: Loading properties from config section Seat:*
[+1.16s] DEBUG: Seat seat0: Starting
[+1.16s] DEBUG: Seat seat0: Creating greeter session
[+1.24s] DEBUG: Seat seat0: Creating display server of type x
[+1.24s] DEBUG: Could not run plymouth --ping: Failed to execute child process "plymouth" (No such file or directory)
[+1.24s] DEBUG: Using VT 7
[+1.24s] DEBUG: Seat seat0: Starting local X display on VT 7
[+1.24s] DEBUG: DisplayServer x-0: Logging to /var/log/lightdm/x-0.log
[+1.24s] DEBUG: DisplayServer x-0: Writing X server authority to /run/lightdm/root/:0
[+1.24s] DEBUG: DisplayServer x-0: Launching X Server
[+1.24s] DEBUG: Launching process 396: /usr/sbin/X :0 -seat seat0 -auth /run/lightdm/root/:0 -nolisten tcp vt7 -novtswitch
[+1.24s] DEBUG: DisplayServer x-0: Waiting for ready signal from X server :0
[+1.24s] DEBUG: Acquired bus name org.freedesktop.DisplayManager
[+1.24s] DEBUG: Registering seat with bus path /org/freedesktop/DisplayManager/Seat0
[+1.83s] DEBUG: Loading users from org.freedesktop.Accounts
[+1.83s] DEBUG: User /org/freedesktop/Accounts/User1000 added
[+4.36s] DEBUG: Got signal 10 from process 396
[+4.36s] DEBUG: DisplayServer x-0: Got signal from X server :0
[+4.36s] DEBUG: DisplayServer x-0: Connecting to XServer :0
[+4.36s] DEBUG: Seat seat0: Display server ready, starting session authentication
[+4.36s] DEBUG: Session pid=425: Started with service 'lightdm-greeter', username 'lightdm'
[+4.49s] DEBUG: Session pid=425: Authentication complete with return value 0: Success
[+4.49s] DEBUG: Seat seat0: Session authenticated, running command
[+4.49s] DEBUG: Session pid=425: Running command /usr/sbin/lightdm-webkit2-greeter
[+4.49s] DEBUG: Creating shared data directory /var/lib/lightdm-data/lightdm
[+4.49s] DEBUG: Session pid=425: Logging to /var/log/lightdm/x-0-greeter.log
[+4.75s] DEBUG: Activating VT 7
[+4.75s] DEBUG: Activating login1 session c1
[+4.75s] DEBUG: Seat seat0 changes active session to c1
[+4.75s] DEBUG: Session c1 is already active
[+9.34s] DEBUG: Session pid=425: Greeter connected version=1.16.6 resettable=false
[+19.02s] DEBUG: Session pid=425: Greeter start authentication for joe
[+19.02s] DEBUG: Session pid=642: Started with service 'lightdm', username 'joe'
[+19.40s] DEBUG: Session pid=642: Got 1 message(s) from PAM
[+19.40s] DEBUG: Session pid=425: Prompt greeter with 1 message(s)
[+23.20s] DEBUG: Session pid=425: Continue authentication
[+23.21s] DEBUG: Session pid=642: Authentication complete with return value 0: Success
[+23.21s] DEBUG: Session pid=425: Authenticate result for user joe: Success
[+23.21s] DEBUG: Session pid=425: User joe authorized
[+23.21s] DEBUG: Session pid=425: Greeter requests session gnome
[+23.21s] DEBUG: Seat seat0: Stopping greeter; display server will be re-used for user session
[+23.21s] DEBUG: Session pid=425: Sending SIGTERM
[+23.84s] DEBUG: Session pid=425: Exited with return value 0
[+23.84s] DEBUG: Seat seat0: Session stopped
[+23.84s] DEBUG: Seat seat0: Greeter stopped, running session
[+23.84s] DEBUG: Registering session with bus path /org/freedesktop/DisplayManager/Session0
[+23.85s] DEBUG: Session pid=642: Running command /etc/lightdm/Xsession gnome-session
[+23.85s] DEBUG: Creating shared data directory /var/lib/lightdm-data/joe
[+23.85s] DEBUG: Session pid=642: Logging to .xsession-errors
[+24.13s] DEBUG: Activating VT 7
[+24.13s] DEBUG: Activating login1 session c2
[+24.14s] DEBUG: Seat seat0 changes active session to 
[+24.14s] DEBUG: Seat seat0 changes active session to c2
[+24.14s] DEBUG: Session c2 is already active
[+16840.15s] DEBUG: Seat seat0: Locking
[+16840.15s] DEBUG: Seat seat0: Creating greeter session
[+16840.15s] DEBUG: Seat seat0: Creating display server of type x
[+16840.15s] DEBUG: Using VT 8
[+16840.15s] DEBUG: Seat seat0: Starting local X display on VT 8
[+16840.15s] DEBUG: DisplayServer x-1: Logging to /var/log/lightdm/x-1.log
[+16840.15s] DEBUG: DisplayServer x-1: Writing X server authority to /run/lightdm/root/:1
[+16840.15s] DEBUG: DisplayServer x-1: Launching X Server
[+16840.15s] DEBUG: Launching process 9526: /usr/sbin/X :1 -seat seat0 -auth /run/lightdm/root/:1 -nolisten tcp vt8 -novtswitch
[+16840.15s] DEBUG: DisplayServer x-1: Waiting for ready signal from X server :1
[+16840.23s] DEBUG: Seat seat0 changes active session to 
[+16840.45s] DEBUG: Got signal 10 from process 9526
[+16840.45s] DEBUG: DisplayServer x-1: Got signal from X server :1
[+16840.45s] DEBUG: DisplayServer x-1: Connecting to XServer :1
[+16840.46s] DEBUG: Seat seat0: Display server ready, starting session authentication
[+16840.46s] DEBUG: Session pid=9535: Started with service 'lightdm-greeter', username 'lightdm'
[+16840.47s] DEBUG: Session pid=9535: Authentication complete with return value 0: Success
[+16840.47s] DEBUG: Seat seat0: Session authenticated, running command
[+16840.47s] DEBUG: Session pid=9535: Running command /usr/sbin/lightdm-webkit2-greeter
[+16840.47s] DEBUG: Creating shared data directory /var/lib/lightdm-data/lightdm
[+16840.47s] DEBUG: Session pid=9535: Logging to /var/log/lightdm/x-1-greeter.log
[+16840.54s] DEBUG: Activating VT 8
[+16840.54s] DEBUG: Locking login1 session c2
[+16840.54s] DEBUG: Activating login1 session c3
[+16840.55s] DEBUG: Seat seat0 changes active session to c3
[+16840.55s] DEBUG: Session c3 is already active
[+16840.79s] DEBUG: Session pid=9535: Greeter connected version=1.16.6 resettable=false
[+16882.13s] DEBUG: Got signal 15 from process 1
[+16882.13s] DEBUG: Caught Terminated signal, shutting down
[+16882.13s] DEBUG: Stopping display manager
[+16882.13s] DEBUG: Seat seat0: Stopping
[+16882.13s] DEBUG: Seat seat0: Stopping display server
[+16882.13s] DEBUG: Sending signal 15 to process 396
[+16882.13s] DEBUG: Seat seat0: Stopping display server
[+16882.13s] DEBUG: Sending signal 15 to process 9526
[+16882.13s] DEBUG: Seat seat0: Stopping session
[+16882.13s] DEBUG: Session pid=642: Sending SIGTERM
[+16882.13s] DEBUG: Seat seat0: Stopping session
[+16882.13s] DEBUG: Session pid=9535: Sending SIGTERM
[+16882.19s] DEBUG: Session pid=9535: Terminated with signal 1
[+16882.19s] DEBUG: Seat seat0: Session stopped

it was working before i didnt change anything

● lightdm.service - Light Display Manager
   Loaded: loaded (/usr/lib/systemd/system/lightdm.service; enabled; vendor preset: disabled)
   Active: failed (Result: start-limit) since Sun 2016-02-07 23:17:15 EST; 48s ago
     Docs: man:lightdm(1)
  Process: 733 ExecStart=/usr/bin/lightdm (code=exited, status=1/FAILURE)
 Main PID: 733 (code=exited, status=1/FAILURE)

Feb 07 23:17:15 joes76 systemd[1]: Failed to start Light Display Manager.
Feb 07 23:17:15 joes76 systemd[1]: lightdm.service: Unit entered failed state.
Feb 07 23:17:15 joes76 systemd[1]: lightdm.service: Failed with result 'exit-code'.
Feb 07 23:17:15 joes76 systemd[1]: lightdm.service: Service hold-off time over, scheduling restart.
Feb 07 23:17:15 joes76 systemd[1]: Stopped Light Display Manager.
Feb 07 23:17:15 joes76 systemd[1]: lightdm.service: Start request repeated too quickly.
Feb 07 23:17:15 joes76 systemd[1]: Failed to start Light Display Manager.
Feb 07 23:17:15 joes76 systemd[1]: lightdm.service: Unit entered failed state.
Feb 07 23:17:15 joes76 systemd[1]: lightdm.service: Failed with result 'start-limit'.

when I do the first command you gave, I see lightdm failed in red

I get a terminal.

So i enter: gnome-shell --replace and i get this error:

gnome-shell:699): clutter-CRITICAL **: Unable to initialize clutter: unable to open display. You have to set the DISPLAY environment variable, or use the --display command line argument
mutter-warning unable to initialize clutter.

I can find a work around by doing startx then gnome-shell --replace. but nothing looks quite right, and i want it to go back to normal. Any help?

I’m hoping it will let me run my skylake processor/intel graphics without messing with parameters

So i tried adding the “i915…” line during a bootup. it did not seem to work. I did see this on another site:

“I am on kernel 4.1.12. Boot arguments are i915.preliminary_hw_support=1 nouveau.modeset=0”

the difference in kernels makes me not want to try this though.do you know what this is about?

Ok. I will add “i915.preliminary_hw_support=1” (no quotes) to /etc/default/grub

i just added it to the last line, is that right?

@lots.0.logs said:

@wintermadness Okay, when the boot loader comes up press e and then find the line that starts with linux /vmlinuz-linux root=UUID=. Add the following to the end of the line (should be right after quiet):

i915.preliminary_hw_support=1

That should solve the issue for you. To make that boot parameter the default you have to add it to /etc/default/grub and then run this command:

sudo grub-mkconfig -o /boot/grub/grub.cfg

Let us know how it goes. Cheers!

Thanks. Before you posted I tried using nomodeset and that seemed to do the trick.

What is the difference?